Text

Annual Radioactive Effluent Release Report
	ML23117A100
Person / Time
Site:	Watts Bar
Issue date:	04/27/2023
From:	Anthony Williams; Tennessee Valley Authority
To:	; Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk
References
	WBL-23-019
	Download: ML23117A100 (1)
	v • d • e

Post Office Box 2000, Spring City, Tennessee 37381 WBL-23-019 April 27, 2023 10 CFR 50.36a 10 CFR 50 Appendix I 10 CFR 72.44(d)(3)

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 1 and Unit 2 Facility Operating License Nos. NPF-90 and NPF-96 NRC Docket Nos. 50-390, 50-391, and 72-1048

Subject:

Watts Bar Nuclear Plant 2022 Annual Radioactive Effluent Release Report The purpose of this letter is to provide the Tennessee Valley Authority (TVA) Watts Bar Nuclear Plant (WBN) Annual Radioactive Effluent Release Report (ARERR) for the period of January 1, 2022 to December 31, 2022. The enclosed annual report is being submitted to the Nuclear Regulatory Commission (NRC) in accordance with Title 10 of the Code of Federal Regulations (10 CFR) 50.36a and the WBN, Unit 1 and Unit 2, Technical Specification (TS) 5.9.3, that requires the ARERR be submitted prior to May 1st of each year.

Enclosure (1) provides the required effluent release data. Enclosure (1) includes information related to the Independent Spent Fuel Storage Installation (ISFSI), documents any deviations which have occurred from Offsite Dose Calculation Manual (ODCM) requirements, addresses any radioactive effluent monitoring instrumentation which was inoperable for greater than 30 days, and provides corrections to previous annual reports. Revision 6 of the Two-Unit ODCM, dated November 16, 2020, remains in the current revision. Revision 6 of the ODCM is included as Enclosure (2).

U.S. Nuclear Regulatory Commission WBL-23-019 Page 2 April 27 , 2023 Changes to the Process Control Program (PCP) are reported in conjunction with the ARERR in accordance with Section 3.4 of the PCP. Revision 5 of the PCP was effective on December 21 ,

2022. The PCP was revised for minor editorial changes . There were no changes to procedure content.

There are no new regulatory commitments associated with this letter. Please direct any questions concerning this matter to Jonathan Johnson , WBN Licensing Manager at jtjohnsonO@tva.gov.

Anth ny L. Williams IV Site Vice President Watts Bar Nuclear Plant Enclosure

1. Watts Bar Nuclear Plant - Tennessee Valley Authority - Annual Radioactive Effluent Release Report -2022

2. Watts Bar Nuclear Plant - Two-Unit Offsite Dose Calculation Manual (ODCM) - Revision 6 cc: (w/ Enclosure)

NRC Regional Admin istrator - Region II NRC Senior Resident Inspector - Watts Bar Nuclear Plant NRC Project Manager - Watts Bar Nuclear Plant NRC Director - Division of Fuel Management, NMSS

Enclosure 1 WATTS BAR NUCLEAR PLANT TENNESSEE VALLEY AUTHORITY Annual Radioactive Effluent Release Report 2022 WBL-23-019 E1-1 of 82

Watts Bar Nuclear Power Plant Tennessee Valley Authority Annual Radioactive Effluent Release Report 2022 WBL-23-019 E1-2 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report I. Introduction .......................................................................................................................................... 4 II. Supplemental Information .................................................................................................................... 4 A. Regulatory Limits .............................................................................................................................. 4 B. Effluent Concentration Limits ........................................................................................................... 5 C. Average Energy ................................................................................................................................. 5 D. Measurements & Approximations of Total Radioactivity ................................................................. 5 E. Batch Releases .................................................................................................................................. 8 F. Abnormal Releases............................................................................................................................ 8 G. Non-routine, Planned Discharges ................................................................................................... 11 H. Radioactive Waste System Treatment Changes ............................................................................. 11 I. Land Use Census Changes ............................................................................................................... 12 J. Effluent Monitoring Instrument Inoperability > 30 Days ................................................................ 13 K. Effluent Monitoring Equipment Sample Deviation ......................................................................... 14 L. Offsite Dose Calculation Manual Changes ...................................................................................... 14 M. Groundwater Monitoring Program (NEI 07-07) .............................................................................. 15 N. Errata/Corrections to Previous ARERRs .......................................................................................... 16 III. Gaseous Effluents ........................................................................................................................... 18 Table 1-A Gaseous Effluents - Summation of all Releases for Unit 1 ..................................................... 18 Table 1-B Gaseous Effluents - Summation of all Releases for Unit 2 ...................................................... 19 Table 1-C Gaseous Effluents - Ground Level Release from Unit 1 (Batch) ............................................. 20 Table 1-C Gaseous Effluents - Ground Level Releases from Unit 1 (Continuous) .................................. 21 Table 1-D Gaseous Effluents - Ground Level Release from Unit 2 (Batch) ............................................ 22 Table 1-D Gaseous Effluents - Ground Level Releases from Unit 2 (Continuous).................................. 23 IV. Liquid Effluents ............................................................................................................................... 24 Table 2-A Liquid Effluents - Summation of all Releases for Unit 1 ......................................................... 24 Table 2-B Liquid Effluents - Summation of all Releases for Unit 2.......................................................... 25 Table 2-C Liquid Effluents - Unit 1 Batch Mode ..................................................................................... 26 Table 2-C Liquid Effluents - Unit 1 Continuous Mode ............................................................................ 27 Table 2-D Liquid Effluents - Unit 2 Batch Mode ..................................................................................... 28 Table 2-D Liquid Effluents - Unit 2 Continuous Mode............................................................................ 29 V. Solid Waste Storage and Shipment..................................................................................................... 30 A. Types of Solid Waste - Summary .................................................................................................... 30 B. Destination by Carrier ..................................................................................................................... 30

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report C. Major Nuclides by Waste Class and Stream ................................................................................... 31 D. Irradiated Fuel Shipments ............................................................................................................... 32 E. Solidification of Waste .................................................................................................................... 32 VI. Radiological Impact to Man ............................................................................................................ 33 A. Introduction .................................................................................................................................... 33 B. Dose Limits ...................................................................................................................................... 33 C. Dose Calculations ............................................................................................................................ 33 D. Doses from Airborne Effluents........................................................................................................ 33 E. Doses from Liquid Effluents ............................................................................................................ 35 F. Population Doses ............................................................................................................................ 35 G. Offsite Direct Radiation Dose.......................................................................................................... 36 H. Dose to a Member of the Public Inside the Site Boundary ............................................................. 36 I. Total Dose ....................................................................................................................................... 36 J. Tables .............................................................................................................................................. 38 Table 3-A Doses from Unit 1 Airborne Effluents - 1st Quarter ............................................................... 38 Table 3-B Doses from Unit 1 Airborne Effluents - 2nd Quarter ............................................................... 39 Table 3-C Doses from Unit 1 Airborne Effluents - 3rd Quarter ............................................................... 40 Table 3-D Doses from Unit 1 Airborne Effluents - 4th Quarter ............................................................... 41 Table 3-E Doses from Unit 2 Airborne Effluents - 1st Quarter ................................................................ 42 Table 3-F Doses from Unit 2 Airborne Effluents - 2nd Quarter ............................................................... 43 Table 3-G Doses from Unit 2 Airborne Effluents - 3rd Quarter ............................................................... 44 Table 3-H Doses from Unit 2 Airborne Effluents - 4th Quarter ............................................................... 45 Table 4-A Doses from Unit 1 Liquid Effluents - 1st Quarter .................................................................... 46 Table 4-B Doses from Unit 1 Liquid Effluents - 2nd Quarter ................................................................... 46 Table 4-C Doses from Unit 1 Liquid Effluents - 3rd Quarter.................................................................... 47 Table 4-D Doses from Unit 1 Liquid Effluents - 4th Quarter ................................................................... 47 Table 4-E Doses from Unit 2 Liquid Effluents - 1st Quarter .................................................................... 48 Table 4-F Doses from Unit 2 Liquid Effluents - 2nd Quarter ................................................................... 48 Table 4-G Doses from Unit 2 Liquid Effluents - 3rd Quarter ................................................................... 49 Table 4-H Doses from Unit 2 Liquid Effluents - 4th Quarter ................................................................... 49 Table 5 Total Dose from Fuel Cycle ......................................................................................................... 50 VII. Independent Spent Fuel Storage Installation ................................................................................. 51 VIII. Meteorological Data ....................................................................................................................... 52

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report TABLES TABLE 1-A GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES FOR UNIT 1 ............................................................................. 18 TABLE 2-B GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES FOR UNIT 2 ............................................................................. 19 TABLE 1-C GASEOUS EFFLUENTS - GROUND LEVEL RELEASE FROM UNIT 1 (BATCH) ..................................................................... 20 TABLE 1-C GASEOUS EFFLUENTS - GROUND LEVEL RELEASES FROM UNIT 1 (CONTINUOUS) ........................................................... 21 TABLE 1-D GASEOUS EFFLUENTS - GROUND LEVEL RELEASE FROM UNIT 2 (BATCH) ..................................................................... 22 TABLE 1-D GASEOUS EFFLUENTS - GROUND LEVEL RELEASES FROM UNIT 2 (CONTINUOUS) .......................................................... 23 TABLE 2-A LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES FOR UNIT 1 ................................................................................. 24 TABLE 2-B LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES FOR UNIT 2 ................................................................................. 25 TABLE 2-C LIQUID EFFLUENTS - UNIT 1 BATCH MODE ............................................................................................................ 26 TABLE 2-C LIQUID EFFLUENTS - UNIT 1 CONTINUOUS MODE ................................................................................................... 27 TABLE 2-D LIQUID EFFLUENTS - UNIT 2 BATCH MODE ............................................................................................................ 30 TABLE 2-D LIQUID EFFLUENTS - UNIT 2 CONTINUOUS MODE ................................................................................................... 29 TABLE 3-A DOSES FROM UNIT 1 AIRBORNE EFFLUENTS - 1ST QUARTER ...................................................................................... 38 TABLE 3-B DOSES FROM UNIT 1 AIRBORNE EFFLUENTS - 2ND QUARTER ...................................................................................... 39 TABLE 3-C DOSES FROM UNIT 1 AIRBORNE EFFLUENTS - 3RD QUARTER ...................................................................................... 40 TABLE 3-D DOSES FROM UNIT 1 AIRBORNE EFFLUENTS - 4TH QUARTER ...................................................................................... 41 TABLE 3-E DOSES FROM UNIT 2 AIRBORNE EFFLUENTS - 1ST QUARTER ...................................................................................... 42 TABLE 3-F DOSES FROM UNIT 2 AIRBORNE EFFLUENTS - 2ND QUARTER ...................................................................................... 43 TABLE 3-G DOSES FROM UNIT 2 AIRBORNE EFFLUENTS - 3RD QUARTER...................................................................................... 44 TABLE 3-H DOSES FROM UNIT 2 AIRBORNE EFFLUENTS - 4TH QUARTER ...................................................................................... 45 TABLE 4-A DOSES FROM UNIT 1 LIQUID EFFLUENTS - 1ST QUARTER ........................................................................................... 46 TABLE 4-B DOSES FROM UNIT 1 LIQUID EFFLUENTS - 2ND QUARTER .......................................................................................... 46 TABLE 4-C DOSES FROM UNIT 1 LIQUID EFFLUENTS - 3RD QUARTER .......................................................................................... 47 TABLE 4-D DOSES FROM UNIT 1 LIQUID EFFLUENTS - 4TH QUARTER .......................................................................................... 47 TABLE 4-E DOSES FROM UNIT 2 LIQUID EFFLUENTS - 1ST QUARTER ........................................................................................... 48 TABLE 4-F DOSES FROM UNIT 2 LIQUID EFFLUENTS - 2ND QUARTER........................................................................................... 48 TABLE 4-G DOSES FROM UNIT 2 LIQUID EFFLUENTS - 3RD QUARTER .......................................................................................... 49 TABLE 4-H DOSES FROM UNIT 2 LIQUID EFFLUENTS - 4TH QUARTER .......................................................................................... 49 TABLE 5 TOTAL DOSE FROM FUEL CYCLE ............................................................................................................................... 50

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report I. Introduction The Annual Radioactive Effluent Release Report covering the operation of both units is submitted pursuant to Watts Bar Nuclear Plant Technical Specification 5.9.3 and Offsite Dose Calculation Manual 5.2.

II. Supplemental Information A. Regulatory Limits

1. Gaseous Effluents Dose rates due to radioactivity released in gaseous effluents from the site to areas at and beyond the unrestricted area boundary shall be limited to the following:

Noble gases

Less than or equal to 500 mrem/year to the total body.

Less than or equal to 3000 mrem/year to the skin.

Iodines, tritium and particulates with half-lives greater than eight days

Less than or equal to 1500 mrem/year to any organ.

Dose to a member of the public shall be limited to the following:

Iodines, tritium and particulates with half-lives greater than eight days

Less than or equal to 7.5 mrem to any organ during any calendar quarter.

Less than or equal to 15 mrem to any organ during any calendar year.

Air dose due to noble gases

Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation during any calendar quarter.

Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation during any calendar year.

2. Liquid Effluents The concentration of radioactivity released in liquid effluents to unrestricted areas shall be limited to 10 times the concentration specified in Title 10 of the Code of Federal Regulations (CFR), Part 20 (Standards for Protection against Radiation), Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.0E-04 Ci/ml total activity.

The dose or dose commitment to a member of the public from radioactivity in liquid effluents released to unrestricted areas shall be limited to less than or equal to 1.5 mrem to the total body during any calendar quarter, less than or equal to 5 mrem to any organ during any calendar quarter, less than or equal to 3 mrem to the total body during any calendar year and less than or equal to 10 mrem to any organ during any calendar year.

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report B. Effluent Concentration Limits

1. Gaseous Effluents Concentration limits for gaseous releases are met through compliance with the maximum permissible dose rates for gaseous releases as defined in plant Offsite Dose Calculation Manual (ODCM) and presented in Section II subsection A.1 of this report.

2. Liquid Effluents The effluent concentration limits (ECL) for liquids are those listed in 10 CFR 20, Appendix B, Table 2, Column 2. For dissolved and entrained gases, the ECL of 2.0E-04 Ci/ml is applied. This ECL is based on the Xe-135 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.

C. Average Energy Watts Bar Nuclear Plant's (WBN) ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mrem/year to the total body and less than or equal to 3000 mrem/year to the skin. Therefore, the average beta and gamma energies (E) for gaseous effluents as described in Regulatory Guide 1.21 Revision 1, "Measuring, Evaluation, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants," are not applicable.

D. Measurements & Approximations of Total Radioactivity Radioactivity measurements performed in support of the Watt Bar Nuclear Power Plant ODCM meet the Lower Limit of Detection requirements given in ODCM Table 2.2-1 and Table 2.2-2.

1. Gaseous Effluents Fission and Activation Gases Airborne effluent gaseous activity is continuously monitored and recorded. Weekly grab samples from the auxiliary building and monthly grab samples from the service building are taken and analyzed to determine the quantity of noble gas activity released based on the total flows for the sample period. Also, noble gas samples are collected and evaluated following startup, shutdown or rated thermal power change exceeding 15 percent within one hour. Sampling is only required if dose equivalent I-131 concentration in the primary coolant has increased more than a factor of three or if the noble gas activity monitor indicates that the containment activity has increased more than a factor of three.

The concentration of noble gases released through the shield building exhausts due to purging containment is determined by using the purge monitor response in combination with containment air samples obtained prior to each purge. The quantity of activity released during the purge is determined using the duration, flowrate, and concentration of noble gases for each purge. Also, noble gas samples are collected and evaluated for ongoing containment purges following startup, shutdown, or rated thermal power change exceeding 15 percent within one hour. Sampling is only required if DEI concentration in the primary coolant has increased more than a factor of three or if the noble gas activity monitor shows that the containment activity has increased more than a factor of three.

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report The quantity of noble gases released through the shield building exhausts due to the batch release of waste gas decay tanks are determined by sampling each tank prior to release. Total activity released is determined from total tank pressure change recorded during the release.

Iodines and Particulates in Gaseous Releases lodine and particulate activity are continuously sampled. Weekly charcoal and particulate samples are taken from the shield building exhausts and auxiliary building exhaust and from the condenser vacuum exhausts during periods of primary to secondary leakage. These samples are analyzed at least weekly to determine the total activity released from the plant based on the total vent flows recorded for the sampling period. Also, particulate and charcoal samples are taken from the shield building exhausts, auxiliary building exhaust, and (when a primary to secondary leak exists) condenser vacuum exhausts once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for 7 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within one hour if dose equivalent l-131 concentration in the primary coolant or the noble gas activity monitor shows that the containment activity has increased more than a factor of three.

Carbon-14 in Gaseous Releases The Carbon-14 production and effluent source term estimates were based on EPRI methodology provided in EPRI Report 1021106, "Updated Carbon-14 Production Rate Estimates for Gaseous Releases at TVA NPG Sites," dated June 8, 2022. It was determined in 2022 that 11.40 curies of Carbon-14 was generated from Unit 1 and 7.45 curies of Carbon-14 was generated from Unit 2. However, only 98% is considered released as gas and only the carbon dioxide form (20%) of that is used in the gaseous dose calculations.

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WBL-23-019 E1-8 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report

2. Liquid Effluents Batch (Radwaste and Condensate Demineralizer Drains)

Total gamma isotopic and tritium concentrations are determined on each radwaste batch tank prior to release. The total activity of a batch release is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide. The curies of each nuclide are then summed. Composite samples are maintained and analyzed monthly for gross alpha and quarterly for iron-55, strontium-89, and strontium-90. During periods of no significant identified primary to secondary leakage, composite samples are not maintained for batch releases from the condensate demineralizer tank releases. During periods of no significant identified primary to secondary leakage or when the condensate demineralizer tanks are discharged to the turbine building station sump, the feedwater tritium concentrations are used to determine the curies of tritium released from condensate demineralizer tank.

Continuous Releases (Turbine Building Station Sump (TBSS), Steam Generator Blowdowns (SGB), and Groundwater Sump (GWS))

During periods of no significant identified primary to secondary leakage, the volume released from the TBSS and SGB's are obtained. The TBSS tritium concentration is determined via weekly grab samples. The feedwater tritium concentrations are used to determine the curies of tritium released from SGB's. The GWS is sampled monthly and analyzed for gross gamma and tritium on a monthly basis, and for Sr-89, Sr-90, and Ni-63 on a quarterly basis. The total activity released is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide.

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WBL-23-019 E1-9 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report E. Batch Releases

1. Gaseous Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Gaseous

1. Number of Batch 21 24 27 18 90 Releases

2. Total duration of minutes 8.64E+04 1.61E+05 1.48E+05 5.51E+04 4.51E+05 batch releases

3. Maximum batch minutes 3.43E+04 4.46E+04 4.28E+04 8.67E+03 4.46E+04 release duration

4. Average batch minutes 4.11E+03 6.72E+03 5.47E+03 3.06E+03 5.01E+03 release duration

5. Minimum batch minutes 4.50E+01 4.00E+01 3.80E+01 3.60E+01 3.60E+01 release duration

2. Liquid Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Liquids

1. Number of Batch 35 11 42 34 122 Releases

2. Total duration of minutes 5.41E+03 2.01E+03 6.89E+03 4.92E+03 1.92E+04 batch releases

3. Maximum batch minutes 4.35E+02 3.90E+02 4.14E+02 3.87E+02 4.35E+02 release duration

4. Average batch minutes 1.55E+02 1.83E+02 1.64E+02 1.45E+02 1.58E+02 release duration

5. Minimum batch minutes 8.50E+01 1.13E+01 9.00E+01 2.60E+01 2.60E+01 release duration F. Abnormal Releases

1. Gaseous Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Gaseous

1. Number of 1 1 0 0 2 Abnormal Releases

2. Total activity of Ci 2.291E-03 1.975E-03 0.00E+00 0.00E+00 4.266E-03 abnormal releases

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WBL-23-019 E1-10 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Unit 2 Steam Generator PORVs (02/28/22 through 06/23/22)

This evaluation is for the release to the environment that occurred from the Unit 2 Steam Generator PORVs in 2022 due to Unit 2 refueling outage and Steam Generator Replacement. The PORV valves were opened and closed during these periods of time.

The following is data used to show no dose impact of the release:

While all the PORVs were not open continuously during this period, the evaluation assumed the release was continuous from all four PORVs.

There have been no gamma emitting radionuclides identified in any Secondary Coolant samples.

The feedwater tritium results obtained on 02/28/2022 indicated a tritium concentration of 4.765E-06 µCi/mL. This tritium concentration is assumed to have been the initial concentration with no additional tritium introduced into the steam generators during the release period. All of the tritium initially present in the steam generators was assumed to have been released through the PORVs from 02/28/2022 through 06/23/2022.

The volume of each steam generator was taken from Westinghouse Guidelines for Secondary Water Chemistry. The listed normal water level value of 4250 ft3 was used as a conservative value. This calculation conservatively assumes that the total volume of all four generators was released and that all the tritium present in that initial volume was released. The calculation for the total tritium activity released is as follows:

4250 ft3/generator

2.832E+04 mL/ft3

4 generators = 4.81E+08 mL 4.765E-06 µCi/mL

4.81E+08 mL = 2.29E+03 µCi (2.291E-03 Ci) of H-3 for 1st quarter The activity of 2.29E-03 curies of H-3 was added to the 1st quarter Table 1-D and Table 3-E. The addition of 3.32E-03 curies of tritium did not have any impact on changing the dose values for the 3rd quarter of 2022.

Individual Doses - 1st Quarter U2 Steam Generator PORV Release Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 0.00E+00 mrad 1.00E+01 mrad 0.00E+00 N/A Gamma Air 0.00E+00 mrad 5.00E+00 mrad 0.00E+00 N/A NG Skin 0.00E+00 mrad N/A N/A N/A NG Total Body 0.00E+00 mrad N/A N/A N/A Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

Child / Thyroid 2.76E-06 mrem 7.5 mrem 3.68E-05 SE 1409 meters Child / Total 2.76E-06 mrem 7.5 mrem 3.68E-05 SE 1409 meters Body Population Doses - 1st Quarter U2 Steam Generator PORV Release Total Body Dose 1.32E-05 man-rem Maximum Organ Dose (Organ) 1.32E-05 man-rem (Bone, GI-LLI, Liver, Thyroid, Lung, Kidney)

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Unit 2 Containment Integrated Leak Rate Test (06/21/22 through 06/22/22)

This evaluation is for the release to the environment that occurred from the Unit 2 Containment during Containment Integrated Leak Rate Testing. During this testing, air from Unit 2 Containment was vented to atmosphere through containment penetration X-54 The following is data used to show no dose impact of the release:

The evaluation assumed that the entire free air volume of Unit 2 Containment was released.

No gamma emitting radionuclides were detected in samples prior to and during the release.

The atmospheric tritium concentration in Unit 2 Containment on 06/21/2022 was 5.950E-8 µCi/cc. This tritium concentration is assumed to have been the initial concentration with no addition tritium introduced into U2 Containment during the release period. All of the tritium initially present in Unit 2 Containment was assumed to have been release from 06/21/2022 to 06/22/2022.

The free air volume of Unit 2 containment is 1,171,012 cubic feet. This calculation conservatively assumes that the total free air volume of Unit 2 Containment was released and that all the tritium present in that initial volume was released. The calculation for the total tritium activity released is as follows:

1,171,012 ft3

2.832E+4 cc/ft3 = 3.32E+10 cc 5.950E-08 µCi/cc

3.32E+10 cc = 1.975E+03 µCi of H3 or 1.975E-03 Ci of H3 for the 2nd Quarter The activity of 1.975E-03 curies of H-3 was added to the 2nd quarter Table 1-D and Table 3-F.

The addition of 1.975E-03 curies of tritium did not have any impact on changing the dose values for the 2nd quarter of 2022.

Individual Doses - 2nd Quarter U2 Containment Integrated Leak Rate Test Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 0.00E+00 mrad 1.00E+01 mrad 0.00E+00 N/A Gamma Air 0.00E+00 mrad 5.00E+00 mrad 0.00E+00 N/A NG Skin 0.00E+00 mrad N/A N/A N/A NG Total Body 0.00E+00 mrad N/A N/A N/A Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

Child / Thyroid 3.42E-06 mrem 7.5 mrem 4.56E-05 SE 1409 meters Child / Total 3.42E-06 mrem 7.5 mrem 4.56E-05 SE 1409 meters Body Population Doses - 2nd Quarter U2 Containment Integrated Leak Rate Test Total Body Dose 1.05E-05 man-rem Maximum Organ Dose (Organ) 1.05E-05 man-rem (Bone, GI-LLI, Kidney, Liver, Lung, Thyroid)

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report

2. Liquid In calendar year 2022 there were no abnormal liquid releases.

G. Non-routine, Planned Discharges In calendar year 2022 there were no non-routine planned discharges.

H. Radioactive Waste System Treatment Changes In calendar year 2022 the only changes to the radwaste system were a new permanent stainless steel and double walled discharge pipe was installed. The process control program was revised for minor editorial changes.

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report I. Land Use Census Changes Receptor Receptor Distance Terrain Adj.

Number Type* Sector (m) Factor 1 NR N 4474 1.5 2 NR NNE 3556 1.8 3 NR NE 3399 2.3 4 NR ENE 3072 1.9 5 NR E 4388 1.6 6 NR ESE 4654 1.8 7 NR SE 1409 1.5 8 NR SSE 1646 1.5 9 NR S 1550 1.8 10 NR SSW 1832 1.9 11 NR SW 4223 2.0 12 NR WSW 2422 1.7 13 NR W 2901 1.1 14 NR WNW 1448 2.5 15 NR NW 1514 1.7 16 NR NNW 4376 1.0 17 NG N 6140 1.1 18 NG NNE 5030 1.6 19 NG NE 4591 2.1 20 NG ENE 3379 1.9 21 NG E 4712 1.6 22 NG ESE 4698 1.8 23 NG SE 1409 1.5 24 NG SSE 7466 1.1 25 NG S 3568 2.0 26 NG SSW 7966 1.4 27 NG SW 8100 1.7 28 NG WSW 2422 1.7 29 NG W 3701 1.0 30 NG WNW 3106 2.1 31 NG NW 1514 1.7 32 NG NNW 4406 1.0 33 MC ESE 6706 1.7 Note Changes from previous years land use file are marked in bold

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Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report J. Effluent Monitoring Instrument Inoperability > 30 Days Date Instrument Explanation 3/17/21 ODCM 1/2.1.1 0-RM-90-212 (Turbine Building Sump effluent radiation Control 1.1.1 monitor) was declared inoperable on 3/17/21 at 12:20 due Table 1.1-1 to instrument malfunction alarm caused by the junction box Item 1.a getting flooded and detector damage during the Unit 2 plant trip (see CR #1679452). Repair of the monitor has been delayed due to unavailability of parts. CR #1687006 was written to document inoperability exceeding 30 days.

8/9/21 ODCM 1/2.1.2 0-FI-90-300/1B (Auxiliary Building Ventilation System Control 1.1-2 effluent flow rate measuring device) was declared Table 1.1-2 inoperable on 8/9/21 at 12:17 for performance of 0-ODI Item 4.c 300. During performance of 0-ODI-90-300, 0-FI-90-300/1B was reading low and determined to require replacement (see CR #1713031). The inoperability of 0-FI-90-300/1B exceeded 30 days on 9/8/21. 0-FI-90-300 returned to service on 2/28/23. CR 1721578 was written to document inoperability exceeding 30 days.

10/5/21 ODCM 1/2.1.2 2-FE-2-256 (Unit 2 Condenser Vacuum Exhaust Flow Rate Control 1.1.2 Monitor) was declared inoperable on 10/5/21 at 21:43 due Table 1.1-2 to erratic flow (see CR #1726176). 2-FE-2-256 returned to Item 2.c service on 7/2/2022. CR #1734451 was written to document inoperability exceeding 30 days.

11/6/21 ODCM 1/2.1.2 1-RM-90-400 (Unit 1 Shield Building Exhaust Radiation Control 1.1.2 Monitor) and 1-FI-90-400 (Unit 1 Shield Building Exhaust Table 1.1-2 Effluent Flow Rate Measuring Device) were declared Item 3.a,b,c inoperable on 11/6/21 at 16:45 for DCN WBN-18-160. 1-RM-90-400 and 1-FI-90-400 declared operable following replacement of radiation monitor and calibration on 2/8/22 at 14:30. CR #1741909 was written to document inoperability exceeding 30 days.

6/12/22 ODCM 1/2.1.2 2-RM-90-400 (Unit 2 Shield Building Exhaust Radiation Control 1.1.2 Monitor) was declared inoperable on 6/12/2022 at 00:30 for Table 1.1-2 DCN WBN-18-160. 2-RM-90-400 declared operable following Item 3.a,b,c replacement of radiation monitor and calibration on 12/8/22 at 16:03. CR #1789306 was written to document the inoperability exceeding 30 days on 7/12/2022.

[13]

WBL-23-019 E1-15 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report K. Effluent Monitoring Equipment Sample Deviation In calendar year 2022 there were no effluent monitoring equipment sample deviations.

L. Offsite Dose Calculation Manual Changes In calendar year 2022 there was no revisions to the Offsite Dose Calculation Manual.

Revision 06 is attached.

[14]

WBL-23-019 E1-16 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report M.Groundwater Monitoring Program (NEI 07-07)

Monitoring Wells Watts Bar has six (6) radiological environmental monitoring program (REMP) on-site groundwater monitoring wells and 24 non-REMP monitoring wells. These wells support monitoring the onsite groundwater plume for the presence or increase of radioactivity.

WBN contracts ARCADIS to perform investigations of the impact tritium has on groundwater and to perform site characterizations, area of impact, and preliminary human health and ecological risk screening.

The non-REMP monitoring wells are sampled at least semi-annually for gamma and tritium. No gamma activity was detected in any groundwater wells in 2022.

All other groundwater monitoring wells continue to exhibit a stable trend and historical average tritium decreasing over time. MW-09 and Well K,R,S,I, and L were also analyzed for Sr-89, Sr-90, Fe-55, and Ni-63, with no detectable activity.

Monitoring Well Sample Results (pCi/L)

Well ID March June September December 2022 2022 2022 2022 D 20400 1792* 2665* -

E <359 - < 266 -

G < 361 - < 274 -

I 7560 9760* 4087* 1415*

J < 353 - < 280 -

K 1500 1117* 953* 709*

L 2550 2877* 4863* 2614*

M < 356 - < 283 -

O < 357 - <341 -

P < 345 <262 340 351 Q < 363 - < 280 -

R 29800 12600* 6133* 3827*

S 23200 12223* 8243* 4233*

V -** < 260 < 281 -

MW-06 < 355 < 335 < 158 624 MW-08 < 361 - < 277 -

MW-09 14700 8770 - 5645*

MW-10 -** - < 281 -

MW-11i < 349 - < 277 -

MW-11s < 356 - < 298 -

MW-12 < 365 < 262 < 273 < 386 MW-13 < 356 - < 283 -

MW-14i - - < 277 -

MW-14s - - 568 -

Where more than one sample was obtained for the quarter, the results were averaged.

- Well V and MW-10 were not able to be obtained due to Steam Generator Replacement equipment in place. CR 1767360

[15]

WBL-23-019 E1-17 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Doses from l-131 Water lngestion Pathway The REMP specified in Table 3.12-1 from NUREG 1301, "Offsite Does Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors," April 1991, requires an I-131 specific analysis for drinking water pathway samples if the annual dose from I-131 is greater than 1 mrem. To evaluate the need for implementation of this additional analysis, the drinking water pathway dose from I-131 to the maximum organ and age group was evaluated. Therefore, the evaluation confirms that the drinking water pathway dose from I-131 was less than the 1 mrem limit and that the performance of the I-131 specific analysis is not required for WBN REMP drinking water samples.

1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter I-131 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Child/Thyroid 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 (mrem)

Population/Thyroid 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 (mrem)

N. Errata/Corrections to Previous ARERRs CR 1844558 was written to include revised Table 1-A and 1-B from the 2021 ARERR. ANI uses Table 1-A in the WBN Annual Radioactive Effluent Release Report for their ERF calculation. Reg Guide 1.21, Rev. 1 states that Iodine 131 should be reported in Table 1-A. In the 2020 and 2021 ARERR, total iodine was reported in Table 1-A and 1-B. In 2020, the fleet began using a template that generates the annual data from the OpenEMS Effluent database to use in the ARERRs. This report template uses Total Iodines for Table 1A, not just I-131. The WBN 2020 and 2021 ARERRs are the two reports in which Total Iodine was reported in Table 1A, where I-131 should have been the only iodine reported.

2021 Table 1-A Gaseous Effluents - Summation of all Releases for Unit 1 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter B. Iodine-131

1. Total Release Curies 5.50E-07 2.46E-07 9.11E-07 1.71E-06 3.42E-06 12%

2. Average Release Rate for Period uCi/sec 5.51E-07 1.06E-06 6.38E-07 9.37E-07 7.96E-07

3. Percent of Tech Spec Limit % * * * *

2021 Table 1-B Gaseous Effluents - Summation of all Releases for Unit 2 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter B. Iodine-131

1. Total Release Curies 5.50E-07 2.46E-07 1.08E-06 1.71E-06 3.59E-06 12%

2. Average Release Rate for Period uCi/sec 2.75E-07 7.60E-07 9.95E-07 8.92E-07 7.33E-07

3. Percent of Tech Spec Limit % * * * * *

[16]

WBL-23-019 E1-18 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report 2020 Table 1-A Gaseous Effluents - Summation of all Releases for Unit 1 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter B. Iodine-131

1. Total Release Curies 0.00E+00 5.67E-07 3.60E-07 1.43E-06 2.36E-06 12%

2. Average Release Rate for uCi/sec 0.00E+00 6.42E-07 1.18E-06 1.09E-06 8.99E-07 Period

3. Percent of Tech Spec Limit % * * * *

2020 Table 1-B Gaseous Effluents - Summation of all Releases for Unit 2 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter B. Iodine-131

1. Total Release Curies 0.00E+00 4.78E-07 4.13E-07 1.43E-06 2.33E-06 12%

2. Average Release Rate for uCi/sec 0.00E+00 1.65E-07 3.09E-07 3.30E-07 2.58E-07 Period

3. Percent of Tech Spec Limit % * * * * *

[17]

WBL-23-019 E1-19 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report III. Gaseous Effluents Table 1-A Gaseous Effluents - Summation of all Releases for Unit 1 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter A. Fission and Activation Gases

1. Total Release Curies 9.08E+00 2.67E+01 3.14E+01 3.08E+01 9.80E+01 22%

2. Average Release Rate for uCi/sec 1.17E+00 3.40E+00 3.96E+00 3.87E+00 3.11E+00 Period

3. Percent of Tech Spec Limit % * * * *

B. Iodine 131

1. Total Release Curies 3.19-07 0.00E+00 7.48E-07 0.00E+00 5.20E-06 12%

2. Average Release Rate for uCi/sec 1.88E-07 0.00E+00 8.01E-07 0.00E+00 2.94E-07 Period

3. Percent of Tech Spec Limit % * * * *

C. Particulates

1. Total Release Curies 1.26E-05 5.96E-06 1.46E-08 0.00E+00 1.86E-05 15%

2. Average Release Rate for uCi/sec 1.62E-06 7.59E-07 1.84E-09 0.00E+00 5.90E-07 Period

3. Percent of Tech Spec Limit % * * * *

D. Tritium

1. Total Release Curies 3.01E+01 5.67E+01 5.50E+01 1.94E+01 1.61E+02 11%

2. Average Release Rate for uCi/sec 3.87E+00 7.21E+00 6.92E+00 2.43E+00 5.10E+00 Period

3. Percent of Tech Spec Limit % * * * * *

4. Tritium from Operating as a Curies 2.38E+01 4.48E+01 4.35E+01 1.53E+01 1.27E+02 Tritium Producing Core (TPC)

5. Adjusted Tritium without Curies 6.32E+00 1.19E+01 1.16E+01 4.06E+00 3.38E+01 TPC Contribution E. Gross Alpha

1. Total Release Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 N/A

2. Average Release Rate for uCi/sec 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Period

3. Percent of Tech Spec Limit % * * * *

F. Carbon-14

1. Total Release Curies 2.78E+00 2.87E+00 2.88E+00 2.87E-01 1.14E+01 N/A

2. Average Release Rate for uCi/sec 3.58E-01 3.65E-01 3.63E-01 3.61E-01 1.45E+00 Period

3. Percent of Tech Spec Limit % * * * * *

Applicable limits are expressed in terms of dose. See Table 3-A through 3-D of this report.

[18]

WBL-23-019 E1-20 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 1-B Gaseous Effluents - Summation of all Releases for Unit 2 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter A. Fission and Activation Gases

1. Total Release Curies 3.18E+01 0.00E+00 7.65E+01 0.00E+00 1.08E+02 22%

2. Average Release Rate for uCi/sec 4.10E+00 0.00E+00 9.62E+00 0.00E+00 3.43E+00 Period

3. Percent of Tech Spec Limit % * * * *

B. Iodine 131

1. Total Release Curies 4.54E-07 0.00E+00 7.76E-07 0.00E+00 1.23E-06 12%

2. Average Release Rate for uCi/sec 6.02E-07 0.00E+00 1.09E-06 0.00E+00 1.08E-06 Period

3. Percent of Tech Spec Limit % * * * *

C. Particulates

1. Total Release Curies 1.26E-05 5.96E-06 0.00E+00 0.00E+00 1.86E-05 15%

2. Average Release Rate for uCi/sec 1.62E-06 7.59E-07 0.00E+00 0.00E+00 5.89E-07 Period

3. Percent of Tech Spec Limit % * * * *

D. Tritium

1. Total Release Curies 6.61E+00 1.24E+01 1.21E+01 4.25E+00 3.53E+01 11%

2. Average Release Rate for uCi/sec 8.50E-01 1.58E+00 1.52E+00 5.34E-01 1.12E+00 Period

3. Percent of Tech Spec Limit % * * * * *

4. Tritium from Operating as a Curies 3.96E+00 7.46E+00 7.25E+00 2.55E+00 2.12E+01 Tritium Producing Core (TPC)

5. Adjusted Tritium without Curies 2.64E+00 4.98E+00 4.83E+00 1.70E+00 1.41E+01 TPC Contribution E. Gross Alpha

1. Total Release Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 N/A

2. Average Release Rate for uCi/sec 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Period

3. Percent of Tech Spec Limit % * * * *

F. Carbon-14

1. Total Release Curies 1.79E+00 0.00E+00 2.85E+00 2.90E+00 7.54E+00 N/A

2. Average Release Rate for uCi/sec 2.30E-01 0.00E+00 3.59E-01 3.65E-01 9.54E-01 Period

3. Percent of Tech Spec Limit % * * * * *

Applicable limits are expressed in terms of dose. See Table 3-E through 3-H of this report.

[19]

WBL-23-019 E1-21 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 1-C Gaseous Effluents - Ground Level Release from Unit 1 (Batch)

Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Gases Ar-41 Ci 8.50E+00 2.48E+01 2.99E+01 3.06E+01 9.38E+01 Kr-85m Ci 9.82E-05 1.29E-02 1.36E-04 2.68E-05 1.31E-02 Kr-87 Ci 0.00E+00 0.00E+00 4.29E-05 0.00E+00 4.29E-05 Kr-88 Ci 6.73E-02 0.00E+00 1.79E-04 1.63E-05 6.75E-02 Kr-89 Ci 0.00E+00 1.70E-01 0.00E+00 0.00E+00 1.70E-01 Xe-131m Ci 1.01E-04 3.03E-01 6.82E-05 0.00E+00 3.03E-01 Xe-133m Ci 2.95E-04 1.22E-04 2.10E-04 9.58E-05 7.23E-04 Xe-133 Ci 3.95E-01 1.27E+00 1.53E+00 1.06E-01 3.30E+00 Xe-135m Ci 6.20E-02 2.58E-02 2.55E-05 0.00E+00 8.79E-02 Xe-135 Ci 9.11E-03 2.37E-02 2.51E-03 7.79E-04 3.61E-02 Xe-137 Ci 0.00E+00 1.71E-01 0.00E+00 0.00E+00 1.71E-01 Xe-138 Ci 4.44E-02 0.00E+00 0.00E+00 0.00E+00 4.44E-02 Total For Period Ci 9.08E+00 2.67E+01 3.14E+01 3.08E+01 9.80E+01

2. Iodines Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

3. Particulates Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

4. Gross Alpha Gross Alpha Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

5. Tritium H-3 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

6. Carbon-14 C-14 (Total) Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C-14 (CO2 Form) Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[20]

WBL-23-019 E1-22 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 1-C Gaseous Effluents - Ground Level Releases from Unit 1 (Continuous)

Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Gases Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Iodines Br-82 Ci 9.47E-08 9.62E-07 3.67E-06 4.71E-07 5.20E-06 I-131 Ci 3.19E-07 0.00E+00 7.48E-07 0.00E+00 1.07E-06 I-133 Ci 0.00E+00 0.00E+00 1.95E-06 0.00E+00 1.95E-06 I-134 Ci 1.05E-06 0.00E+00 0.00E+00 0.00E+00 1.05E-06 Total For Period Ci 1.46E-06 9.62E-07 6.37E-06 4.71E-07 9.26E-06

3. Particulates Co-57 Ci 4.20E-07 0.00E+00 0.00E+00 0.00E+00 4.20E-07 Co-58 Ci 6.61E-06 3.61E-06 0.00E+00 0.00E+00 1.02E-05 Co-60 Ci 3.94E-06 2.35E-06 8.41E-09 0.00E+00 6.30E-06 Ru-103 Ci 0.00E+00 0.00E+00 6.19E-09 0.00E+00 6.19E-09 Sn-113 Ci 1.66E-06 0.00E+00 0.00E+00 0.00E+00 1.66E-06 Total For Period Ci 1.26E-05 5.96E-06 1.46E-08 0.00E+00 1.86E-05

4. Gross Alpha Gross Alpha Ci 0.00E+00 0.00E+00 0.00E+00 5.92E-08 5.92E-08

5. Tritium H-3 Ci 3.01E+01 5.67E+01 5.50E+01 1.94E+01 1.61E+02

6. Carbon-14 C-14 (Total) Ci 2.78E+00 2.87E+00 2.88E+00 2.87E-01 1.14E+01 C-14 (CO2 Form) Ci 5.57E-01 5.73E-01 5.77E-01 5.74E-01 2.28E+00

[21]

WBL-23-019 E1-23 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 1-D Gaseous Effluents - Ground Level Release from Unit 2 (Batch)

Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Gases Ar-41 Ci 3.16E+01 0.00E+00 7.17E+01 0.00E+00 1.03E+02 Xe-133 Ci 0.00E+00 0.00E+00 3.28E+00 0.00E+00 3.28E+00 Xe-135m Ci 0.00E+00 0.00E+00 4.42E-01 0.00E+00 4.42E-01 Xe-135 Ci 2.96E-01 0.00E+00 1.02E+00 0.00E+00 1.31E+00 Total For Period Ci 3.18E+01 0.00E+00 7.65E+01 0.00E+00 1.08E+02

2. Iodines Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

3. Particulates Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

4. Gross Alpha Gross Alpha Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

5. Tritium H-3 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

6. Carbon-14 C-14 (Total) Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C-14 (CO2 Form) Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[22]

WBL-23-019 E1-24 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 1-D Gaseous Effluents - Ground Level Releases from Unit 2 (Continuous)

Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Gases Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Iodines Br-82 Ci 3.18E-06 0.00E+00 7.91E-06 2.06E-05 3.17E-05 I-131 Ci 4.54E-07 0.00E+00 7.76E-07 0.00E+00 1.23E-06 I-134 Ci 1.05E-06 0.00E+00 0.00E+00 0.00E+00 1.05E-06 Total For Period Ci 4.68E-06 0.00E+00 8.68E-06 2.06E-05 3.40E-05

3. Particulates Co-57 Ci 4.16E-07 0.00E+00 0.00E+00 0.00E+00 4.16E-07 Co-58 Ci 6.61E-06 3.61E-06 0.00E+00 0.00E+00 1.02E-05 Co-60 Ci 3.94E-06 2.35E-06 0.00E+00 0.00E+00 6.29E-06 Sn-113 Ci 1.66E-06 0.00E+00 0.00E+00 0.00E+00 1.66E-06 Total For Period Ci 1.26E-05 5.96E-06 0.00E+00 0.00E+00 1.86E-05

4. Gross Alpha Gross Alpha Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

5. Tritium H-3 Ci 6.61E+00 1.24E+01 1.21E+01 4.25E+00 3.53E+01

6. Carbon-14 C-14 (Total) Ci 1.79E+00 0.00E+00 2.85E+00 2.90E+00 7.54E+00 C-14 (CO2 Form) Ci 3.58E-01 0.00E+00 5.70E-01 5.80E-01 1.51E+00

[23]

WBL-23-019 E1-25 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report IV. Liquid Effluents Table 2-A Liquid Effluents - Summation of all Releases for Unit 1 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter A. Fission and Activation Products

1. Total Release Curies 1.25E-02 6.86E-04 2.66E-04 1.66E-03 1.52E-02 25%

2. Average Diluted Concentration uCi/mL 8.28E-10 3.25E-11 1.64E-11 1.24E-10 9.62E-09

3. Percent of Tech Spec Limit % * * * *

B. Tritium

1. Total Release Curies 8.69E+02 1.71E+02 1.15E+03 1.30E+03 3.49E+03 18%

2. Average Diluted Concentration uCi/mL 5.76E-05 8.08E-06 7.09E-05 9.67E-05 2.21E-03

3. Percent of Tech Spec Limit % * * * * *

4. Tritium from Operating as a Curies 6.87E+02 1.35E+02 9.07E+02 1.02E+03 2.75E+03 Tritium Producing Core (TPC)

5. Adjusted Tritium without TPC Curies 1.83E+02 3.58E+01 2.41E+02 2.72E+02 7.32E+02 Contribution C. Dissolved and Entrained Noble Gases

1. Total Release Curies 5.65E-04 1.02E-05 6.25E-05 2.23E-04 8.60E-04 39%

2. Average Diluted Concentration uCi/mL 3.74E-11 4.83E-13 3.86E-12 1.66E-11 5.45E-10

3. Percent of Tech Spec Limit % * * * *

D. Gross Alpha Radioactivity

1. Total Release Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 N/A E. Volume of Liquid Waste to Liters 5.30E+08 4.22E+08 4.06E+08 2.22E+08 1.58E+09 2%

Discharge Canal (prior to dilution)

F. Volume of Dilution Water for Liters 1.51E+10 2.11E+10 1.62E+10 1.34E+10 1.58E+09 12%

Period

Applicable limits are expressed in terms of dose. See Table 4-A through 4-D of this report.

[24]

WBL-23-019 E1-26 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 2-B Liquid Effluents - Summation of all Releases for Unit 2 Units 1st 2nd 3rd 4th Total Error %

Quarter Quarter Quarter Quarter A. Fission and Activation Products

1. Total Release Curies 1.25E-02 6.86E-04 2.66E-04 1.66E-03 1.52E-02 25%

2. Average Diluted Concentration uCi/mL 1.51E-09 1.22E-09 1.89E-11 1.25E-10 4.20E-10

3. Percent of Tech Spec Limit % * * * *

B. Tritium

1. Total Release Curies 1.91E+02 3.74E+01 2.52E+02 2.84E+02 7.65E+02 18%

2. Average Diluted Concentration uCi/mL 2.31E-05 6.66E-05 1.79E-05 2.14E-05 2.11E-05

3. Percent of Tech Spec Limit % * * * * *

4. Tritium from Operating as a Curies 1.14E+02 2.25E+01 1.51E+02 1.71E+02 4.59E+02 Tritium Producing Core (TPC)

5. Adjusted Tritium without TPC Curies 7.63E+01 1.50E+01 1.01E+02 1.14E+02 3.06E+02 Contribution C. Dissolved and Entrained Noble Gases

1. Total Release Curies 5.65E-04 1.02E-05 6.25E-05 2.23E-04 8.60E-04 39%

2. Average Diluted Concentration uCi/mL 6.84E-11 1.81E-11 4.44E-12 1.68E-11 2.38E-11

3. Percent of Tech Spec Limit % * * * *

D. Gross Alpha Radioactivity

1. Total Release Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 N/A E. Volume of Liquid Waste to Liters 5.08E+08 3.69E+08 4.08E+08 2.30E+08 1.52E+09 2%

Discharge Canal (prior to dilution)

F. Volume of Dilution Water for Liters 8.26E+09 5.62E+08 1.41E+10 1.33E+10 3.62E+10 12%

Period

Applicable limits are expressed in terms of dose. See Table 4-E through 4-H of this report.

[25]

WBL-23-019 E1-27 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 2-C Liquid Effluents - Unit 1 Batch Mode Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Products F-18 Ci 3.97E-05 7.75E-07 1.95E-06 0.00E+00 4.24E-05 Na-24 Ci 5.09E-06 0.00E+00 0.00E+00 0.00E+00 5.09E-06 Cr-51 Ci 4.17E-04 0.00E+00 0.00E+00 0.00E+00 4.17E-04 Mn-54 Ci 2.92E-04 1.77E-06 9.64E-07 4.84E-05 3.43E-04 Fe-55 Ci 2.78E-03 5.13E-04 0.00E+00 9.32E-04 4.23E-03 Fe-59 Ci 1.61E-04 0.00E+00 1.67E-06 0.00E+00 1.63E-04 Co-57 Ci 1.35E-05 8.36E-07 3.68E-07 0.00E+00 1.47E-05 Co-58 Ci 2.11E-03 4.77E-05 4.12E-05 8.27E-05 2.28E-03 Co-60 Ci 3.06E-03 3.81E-05 1.21E-04 4.67E-04 3.68E-03 Zn-65 Ci 8.13E-05 0.00E+00 0.00E+00 0.00E+00 8.13E-05 Rb-89 Ci 6.85E-06 0.00E+00 0.00E+00 0.00E+00 6.85E-06 Sr-92 Ci 2.14E-05 0.00E+00 0.00E+00 0.00E+00 2.14E-05 Zr-95 Ci 8.12E-05 0.00E+00 0.00E+00 0.00E+00 8.12E-05 Zr-97 Ci 1.65E-05 0.00E+00 0.00E+00 0.00E+00 1.65E-05 Nb-95 Ci 1.35E-04 0.00E+00 0.00E+00 0.00E+00 1.35E-04 Nb-97 Ci 1.51E-05 0.00E+00 0.00E+00 0.00E+00 1.51E-05 Mo-99 Ci 0.00E+00 0.00E+00 8.24E-07 0.00E+00 8.24E-07 Tc-101 Ci 3.35E-06 0.00E+00 0.00E+00 0.00E+00 3.35E-06 Ru-103 Ci 1.51E-06 0.00E+00 5.94E-07 0.00E+00 2.10E-06 Ag-110m Ci 2.26E-04 0.00E+00 0.00E+00 0.00E+00 2.26E-04 Sn-113 Ci 1.43E-05 0.00E+00 0.00E+00 0.00E+00 1.43E-05 Sn-117m Ci 0.00E+00 0.00E+00 5.50E-07 5.84E-07 1.13E-06 Sb-122 Ci 1.86E-06 0.00E+00 0.00E+00 0.00E+00 1.86E-06 Sb-124 Ci 5.11E-04 0.00E+00 0.00E+00 0.00E+00 5.11E-04 Sb-125 Ci 2.50E-03 8.27E-05 9.33E-05 1.29E-04 2.81E-03 Sb-126 Ci 5.41E-07 0.00E+00 0.00E+00 0.00E+00 5.41E-07 I-134 Ci 1.77E-05 0.00E+00 0.00E+00 0.00E+00 1.77E-05 I-135 Ci 3.88E-06 0.00E+00 0.00E+00 4.34E-06 8.21E-06 Cs-138 Ci 1.78E-05 0.00E+00 0.00E+00 0.00E+00 1.78E-05 Ba-140 Ci 9.38E-06 0.00E+00 3.70E-06 0.00E+00 1.31E-05 Ce-141 Ci 0.00E+00 8.79E-07 0.00E+00 0.00E+00 8.79E-07 Total Ci 1.25E-02 6.86E-04 2.66E-04 1.66E-03 1.52E-02

2. Tritium H-3 Ci 8.69E+02 1.71E+02 1.15E+03 1.30E+03 3.49E+03

[26]

WBL-23-019 E1-28 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report

3. Dissolved and Entrained Gases Kr-89 Ci 3.23E-05 0.00E+00 0.00E+00 0.00E+00 3.23E-05 Xe-131m Ci 0.00E+00 0.00E+00 0.00E+00 1.92E-05 1.92E-05 Xe-133 Ci 5.00E-04 7.90E-06 6.25E-05 2.01E-04 7.70E-04 Xe-135m Ci 1.33E-05 2.27E-06 0.00E+00 0.00E+00 1.55E-05 Xe-135 Ci 1.57E-05 0.00E+00 0.00E+00 3.32E-06 1.90E-05 Xe-138 Ci 4.28E-06 0.00E+00 0.00E+00 0.00E+00 4.28E-06 Total Ci 5.65E-04 1.02E-05 6.25E-05 2.23E-04 8.60E-04

4. Gross Alpha Radioactivity Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 2-C Liquid Effluents - Unit 1 Continuous Mode Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Products Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Tritium H-3 Ci 4.32E+00 1.38E+00 8.72E-01 3.87E-01 6.96E+00

3. Dissolved and Entrained Gases Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

4. Gross Alpha Radioactivity Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[27]

WBL-23-019 E1-29 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Table 2-D Liquid Effluents - Unit 2 Batch Mode Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Products F-18 Ci 3.97E-05 7.75E-07 1.95E-06 0.00E+00 4.24E-05 Na-24 Ci 5.09E-06 0.00E+00 0.00E+00 0.00E+00 5.09E-06 Cr-51 Ci 4.17E-04 0.00E+00 0.00E+00 0.00E+00 4.17E-04 Mn-54 Ci 2.92E-04 1.77E-06 9.64E-07 4.84E-05 3.43E-04 Fe-55 Ci 2.78E-03 5.13E-04 0.00E+00 9.32E-04 4.23E-03 Fe-59 Ci 1.61E-04 0.00E+00 1.67E-06 0.00E+00 1.63E-04 Co-57 Ci 1.35E-05 8.36E-07 3.68E-07 0.00E+00 1.47E-05 Co-58 Ci 2.11E-03 4.77E-05 4.12E-05 8.27E-05 2.28E-03 Co-60 Ci 3.06E-03 3.81E-05 1.21E-04 4.67E-04 3.68E-03 Zn-65 Ci 8.13E-05 0.00E+00 0.00E+00 0.00E+00 8.13E-05 Rb-89 Ci 6.85E-06 0.00E+00 0.00E+00 0.00E+00 6.85E-06 Sr-92 Ci 2.14E-05 0.00E+00 0.00E+00 0.00E+00 2.14E-05 Zr-95 Ci 8.12E-05 0.00E+00 0.00E+00 0.00E+00 8.12E-05 Zr-97 Ci 1.65E-05 0.00E+00 0.00E+00 0.00E+00 1.65E-05 Nb-95 Ci 1.35E-04 0.00E+00 0.00E+00 0.00E+00 1.35E-04 Nb-97 Ci 1.51E-05 0.00E+00 0.00E+00 0.00E+00 1.51E-05 Mo-99 Ci 0.00E+00 0.00E+00 8.24E-07 0.00E+00 8.24E-07 Tc-101 Ci 3.35E-06 0.00E+00 0.00E+00 0.00E+00 3.35E-06 Ru-103 Ci 1.51E-06 0.00E+00 5.94E-07 0.00E+00 2.10E-06 Ag-110m Ci 2.26E-04 0.00E+00 0.00E+00 0.00E+00 2.26E-04 Sn-113 Ci 1.43E-05 0.00E+00 0.00E+00 0.00E+00 1.43E-05 Sn-117m Ci 0.00E+00 0.00E+00 5.50E-07 5.84E-07 1.13E-06 Sb-122 Ci 1.86E-06 0.00E+00 0.00E+00 0.00E+00 1.86E-06 Sb-124 Ci 5.11E-04 0.00E+00 0.00E+00 0.00E+00 5.11E-04 Sb-125 Ci 2.50E-03 8.27E-05 9.33E-05 1.29E-04 2.81E-03 Sb-126 Ci 5.41E-07 0.00E+00 0.00E+00 0.00E+00 5.41E-07 I-134 Ci 1.77E-05 0.00E+00 0.00E+00 0.00E+00 1.77E-05 I-135 Ci 3.88E-06 0.00E+00 0.00E+00 4.34E-06 8.21E-06 Cs-138 Ci 1.78E-05 0.00E+00 0.00E+00 0.00E+00 1.78E-05 Ba-140 Ci 9.38E-06 0.00E+00 3.70E-06 0.00E+00 1.31E-05 Ce-141 Ci 0.00E+00 8.79E-07 0.00E+00 0.00E+00 8.79E-07 Total Ci 1.25E-02 6.86E-04 2.66E-04 1.66E-03 1.52E-02

2. Tritium H-3 Ci 1.91E+02 3.74E+01 2.52E+02 2.84E+02 7.65E+02

[28]

WBL-23-019 E1-30 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report

3. Dissolved and Entrained Gases Kr-89 Ci 3.23E-05 0.00E+00 0.00E+00 0.00E+00 3.23E-05 Xe-131m Ci 0.00E+00 0.00E+00 0.00E+00 1.92E-05 1.92E-05 Xe-133 Ci 5.00E-04 7.90E-06 6.25E-05 2.01E-04 7.70E-04 Xe-135m Ci 1.33E-05 2.27E-06 0.00E+00 0.00E+00 1.55E-05 Xe-135 Ci 1.57E-05 0.00E+00 0.00E+00 3.32E-06 1.90E-05 Xe-138 Ci 4.28E-06 0.00E+00 0.00E+00 0.00E+00 4.28E-06 Total Ci 5.65E-04 1.02E-05 6.25E-05 2.23E-04 8.60E-04

4. Gross Alpha Radioactivity Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 2-D Liquid Effluents - Unit 2 Continuous Mode Units 1st 2nd 3rd 4th Total Quarter Quarter Quarter Quarter

1. Fission and Activation Products Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

2. Tritium H-3 Ci 4.43E+00 1.29E+00 8.36E-01 5.50E-01 7.11E+00

3. Dissolved and Entrained Gases Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

4. Gross Alpha Radioactivity Total For Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[29]

WBL-23-019 E1-31 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report V. Solid Waste Storage and Shipment A. Types of Solid Waste - Summary 12 Month Est. (Ci)

Unit Type of Waste Period Error %

Spent resins, filters, sludges, evaporator m3 21.41E+00 N/A bottoms, etc. Ci 2.87E+02 +/- 25%

Dry Active Waste, Compressible Waste m3 1.64E+03 N/A Contaminated Equipment, etc. Ci 8.32E+01 +/- 25%

m3 0.00 N/A Irradiated Components, Control Rods, etc.

Ci 0.00 N/A B. Destination by Carrier Number of Shipments Mode of Transportation Destination 1 Motor Freight Energy Solutions, Memphis, TN 2 Motor Freight Energy Solutions, Clive, Utah 1 Motor Freight Erwin Resin Solutions, Erwin, TN 11 Motor Freight Energy Solutions, Oak Ridge TN 25 Motor Freight TOXCO - Oak Ridge, TN

[30]

WBL-23-019 E1-32 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report C. Major Nuclides by Waste Class and Stream (Cutoff = 1.0%)

Spent resins, filters, sludges, evaporator bottoms, etc. (nuclides determined by measurement Nuclide Percent Ci Cr-51 2.94% 7.67E+00 Mn-54 3.27% 8.53E+00 Fe-55 3.13% 8.18E+00 Co-58 38.24% 9.98E+01 Co-60 21.47% 5.60E+01 Ni-63 12.50% 3.26E+01 Nb-95 1.39% 3.64E+00 Sb-125 14.63% 3.82E+01 Dry Active Waste, Compressible Waste Contaminated Equipment, etc. (nuclides determined by estimate) Nuclide Percent Ci H-3 56.53% 4.78E-01 Mn-54 1.40% 1.18E-02 Fe-55 2.11% 1.78E-02 Co-58 7.98% 6.74E-02 Co-60 8.54% 7.21E-02 Ni-63 2.48% 2.09E-02 Zr-95 6.30% 5.33E-02 Nb-95 9.94% 8.39E-02 Sb-125 1.04% 8.76E-03 Cs-137 2.14% 1.81E-02 Irradiated Components None N/A N/A

[31]

WBL-23-019 E1-33 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report D. Irradiated Fuel Shipments None E. Solidification of Waste Was solidification performed? No If yes, solidification media: N/A

[32]

WBL-23-019 E1-34 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact VI. Radiological Impact to Man A. Introduction Potential doses to maximum individuals and the population around WBN are calculated for each quarter as required in Section 5.2 of the ODCM. Measured plant releases for the reporting period are used to estimate these doses. Dispersion of radioactive effluents in the environment is estimated using meteorological data and river flow data. In this report, the doses resulting from releases are described and compared to limits established for WBN.

B. Dose Limits The ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to the general public, from the release of radioactive effluents. These limits are set well below the Technical Specification limits which govern the concentrations of radioactivity and doses permissible in unrestricted areas. This ensures that radioactive effluent releases are as low as reasonably achievable.

C. Dose Calculations Estimated doses to the public are determined using computer models (the Gaseous Effluent Licensing Code, GELC, and the Quarterly Water Dose Assessment Code, QWATA).

These models are based on guidance provided by the NRC (in Regulatory Guides 1.109, 1.111 and 1.113) for determining the potential dose to individuals and populations living in the vicinity of the plant. The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation of the dose to a "maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum values. Many of these factors are obtained from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 3 and 4.

D. Doses from Airborne Effluents For airborne effluents, the public can be exposed to radiation from several sources: direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently eaten by milk and beef animals.

Airborne Discharge Points All releases from WBN are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from wind speeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters, as presented for each quarter in Section VIII.

[33]

WBL-23-019 E1-35 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Meteorological Data Meteorological variables at WBN are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46, and 91 meters above the ground. Quarterly JFDs are calculated for each release point using the appropriate levels of meteorological data. A JFD provides the percentage of the time in a quarter that the wind is blowing out of a particular upwind compass sector in a particular range of wind speeds for a given stability class A through G. The wind speeds are divided into nine wind speed ranges. Calms are distributed by direction in proportion to the distribution of non-calm wind directions less than 0.7 m/s (1.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

External Exposure Dose Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for points at and beyond the unrestricted area boundary as described in the WBN ODCM.

The highest of these doses is then selected.

Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.

Organ Dose Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into three possible contributing pathways: ingestion of cow milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each real receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. Since specific data on beef animals were not available, the location of the highest beef dose for all receptors within an age group will be considered the beef dose for each receptor within that age group. For ground contamination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.

Doses from airborne effluents from Unit 1 are presented in Tables 3-A through 3-D. Doses from airborne effluents from Unit 2 are presented in Tables 3-E through 3-H.

[34]

WBL-23-019 E1-36 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact E. Doses from Liquid Effluents For liquid effluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

The concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of WBN. Parameters used to determine the doses are based on guidance given by the NRC (in Regulatory Guide 1.109) for maximum ingestion rates, exposure times, etc. Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the WBN ODCM.

Liquid Release Points and River Data Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. All routine liquid releases from WBN, located at Tennessee River Mile 528.5, are made through diffusers which extend into the Tennessee River. It is assumed that releases to the river through these diffusers will initially be entrained in one-tenth of the water which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at Tennessee River Mile 510.0.

Doses are calculated for locations within a 50-mile radius downstream of the plant site.

The maximum potential recreation dose is calculated for a location immediately downstream from the plant outfall. The maximum individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first downstream dam (Chickamauga Dam). The maximum individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (Dayton, TN).

This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from WBN, is an individual who obtains all of his drinking water at Dayton, TN, consumes fish caught from the Tennessee River between WBN and Chickamauga Dam, and spends 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year on the shoreline just below the outfall from WBN. Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presented in Tables 4-A through 4-H, along with the average river flows past the plant site for the periods.

F. Population Doses Population doses for highest exposed organ due to airborne effluents are calculated for a projected 2040 population distribution of 1,523,385 persons living within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution. Ingestion population doses are calculated assuming that each individual consumes milk, vegetables, and meat produced within the sector annulus in which he resides. Doses from external pathways and inhalation are based on the 50-mile human population distribution.

[35]

WBL-23-019 E1-37 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Population doses for total body and the maximum exposed organ due to liquid effluents are calculated for the entire downstream Tennessee River Population. Water ingestion population doses are calculated using actual population figures for downstream public water supplies. Fish ingestion population doses are calculated assuming that all sport fish caught in the Tennessee River are consumed by the Tennessee River population. Recreation population doses are calculated using actual recreational data on the number of shoreline visits at downstream locations.

Population dose estimates for airborne and liquid effluents from Unit 1 are presented in Tables 3-A through 3-D and 4-A through 4-D. Population dose estimates for airborne and liquid effluents from Unit 2 are presented in Tables 3-E through 3-H and 4-E through 4-H.

G. Offsite Direct Radiation Dose External gamma radiation levels were measured by Landauer InLight (optically stimulated luminescence dosimeters (OSLDs) deployed around WBN as part of the offsite Radiological Environmental Monitoring Program. The quarterly gamma radiation levels determined from these dosimeters during this reporting period averaged 18.8 mR/quarter at onsite (at or near the site boundary) stations and 17.6 mR/quarter at offsite stations or 1.2 mR/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for preoperational and construction phases of the WBN plant site where the average radiation levels onsite were generally 2-8 mR/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences. Fluctuations in natural background dose rates and in dosimeters readings tend to mask any small increments which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.

H. Dose to a Member of the Public Inside the Site Boundary As stated in the WBN ODCM, an evaluation of the dose to a member of the public inside the unrestricted area boundary is performed for a hypothetical TVA employee who works just outside the restricted area boundary for an entire work year (2000 hours0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months ). Results from onsite dosimeter measurements indicated that the highest annual dosimeter reading outside Radiological Control Area was 390 mrem a the U1 RWST Fence. Using this value, subtracting an annual background value of approximately 53 mrem/year, and multiplying by the ratio of the occupancy times (2000/8760), the highest external dose to a member of the public inside the unrestricted area boundary would be 77 mrem. The doses due to radioactive effluents released to the atmosphere calculated in this report would not add a significant amount to this measured dose. This dose is below the 10 CFR 20 annual limit of 100 mrem.

I. Total Dose To determine compliance with 40 CFR 190, annual total dose contributions to the maximum individual from WBN radioactive effluents and all other nearby uranium fuel cycle sources are considered.

The annual dose to any organ other than thyroid for the maximum individual is conservatively estimated by summing the following doses: the total body air submersion

[36]

WBL-23-019 E1-38 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than thyroid) to determine compliance.

The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance. Cumulative annual total doses are presented in Table 5.

[37]

WBL-23-019 E1-39 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact J. Tables Table 3-A Doses from Unit 1 Airborne Effluents - 1st Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 1.31E-02 mrad 1.00E+01 mrad 1.31E-01 E 1280 meters Gamma Air 3.65E-02 mrad 5.00E+00 mrad 7.30E-01 E 1280 meters NG Skin 1.43E-02 mrad N/A N/A SE 1409 meters NG Total Body 9.73E-03 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 7.07E-01 mrem 7.5 mrem 9.43E+00 SE 1409 meters Bone Child / Thyroid 1.78E-01 mrem 7.5 mrem 2.37E+00 SE 1409 meters Child / Total 1.78E-01 mrem 7.5 mrem 2.37E+00 SE 1409 meters Body Population Doses Total Body Dose 4.80E-01 man-rem Maximum Organ Dose (Organ) 1.69E+00 man-rem (Bone)

[38]

WBL-23-019 E1-40 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-B Doses from Unit 1 Airborne Effluents - 2nd Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 3.76E-02 mrad 1.00E+01 mrad 3.76E-01 ESE 1250 meters Gamma Air 1.04E-01 mrad 5.00E+00 mrad 2.08E+00 ESE 1250 meters NG Skin 6.23E-02 mrad N/A N/A SE 1409 meters NG Total Body 4.22E-02 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 1.04E+00 mrem 7.5 mrem 1.39E+01 SE 1409 meters Bone Child / Thyroid 3.20E-01 mrem 7.5 mrem 4.27E+00 SE 1409 meters Child / Total 3.20E-01 mrem 7.5 mrem 4.27E+00 SE 1409 meters Body Population Doses Total Body Dose 5.98E-01 man-rem Maximum Organ Dose (Organ) 1.74E+00 man-rem (Bone)

[39]

WBL-23-019 E1-41 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-C Doses from Unit 1 Airborne Effluents - 3rd Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 4.50E-02 mrad 1.00E+01 mrad 4.50E-01 ESE 1250 meters Gamma Air 1.25E-01 mrad 5.00E+00 mrad 2.50E+00 ESE 1250 meters NG Skin 7.49E-02 mrad N/A N/A SE 1409 meters NG Total Body 5.08E-02 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 1.05E+00 mrem 7.5 mrem 1.40E+01 SE 1409 meters Bone Child / Thyroid 3.27E-01 mrem 7.5 mrem 4.36E+00 SE 1409 meters Child / Total 3.27E-01 mrem 7.5 mrem 4.36E+00 SE 1409 meters Body Population Doses Total Body Dose 5.94E-01 man-rem Maximum Organ Dose (Organ) 1.75E+00 man-rem (Bone)

[40]

WBL-23-019 E1-42 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-D Doses from Unit 1 Airborne Effluents - 4th Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 5.91E-02 mrad 1.00E+01 mrad 5.91E-01 ESE 1250 meters Gamma Air 1.67E-01 mrad 5.00E+00 mrad 3.34E+00 ESE 1250 meters NG Skin 1.52E-01 mrad N/A N/A SE 1409 meters NG Total Body 1.03E-01 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 1.75E+00 mrem 7.5 mrem 2.33E+01 SE 1409 meters Bone Child / Thyroid 4.84E-01 mrem 7.5 mrem 6.45E+00 SE 1409 meters Child / Total 4.84E-01 mrem 7.5 mrem 6.45E+00 SE 1409 meters Body Population Doses Total Body Dose 3.68E-01 man-rem Maximum Organ Dose (Organ) 1.41E-01 man-rem (Bone)

[41]

WBL-23-019 E1-43 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-E Doses from Unit 2 Airborne Effluents - 1st Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 4.81E-02 mrad 1.00E+01 mrad 4.81E-01 E 1280 meters Gamma Air 1.36E-01 mrad 5.00E+00 mrad 2.72E+00 E 1280 meters NG Skin 5.31E-02 mrad N/A N/A SE 1409 meters NG Total Body 3.60E-02 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 4.69E-01 mrem 7.5 mrem 6.25E+00 SE 1409 meters Bone Child / Thyroid 1.29E-01 mrem 7.5 mrem 1.72E+00 SE 1409 meters Child / Total 1.29E-01 mrem 7.5 mrem 1.72E+00 SE 1409 meters Body Population Doses Total Body Dose 2.47E-01 man-rem Maximum Organ Dose (Organ) 1.02E+00 man-rem (Bone)

[42]

WBL-23-019 E1-44 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-F Doses from Unit 2 Airborne Effluents - 2nd Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 0.00E+00 mrad 1.00E+01 mrad 0.00E+00 N 1550 meters Gamma Air 0.00E+00 mrad 5.00E+00 mrad 0.00E+00 N 1550 meters NG Skin 2.79E-05 mrad N/A N/A SE 1409 meters NG Total Body 2.37E-05 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 2.15E-02 mrem 7.5 mrem 2.87E-01 SE 1409 meters Bone Child / Thyroid 2.15E-02 mrem 7.5 mrem 2.87E-01 SE 1409 meters Child / Total 2.15E-02 mrem 7.5 mrem 2.87E-01 SE 1409 meters Body Population Doses Total Body Dose 6.59E-02 man-rem Maximum Organ Dose (Organ) 6.59E-02 man-rem (Thyroid, Liver, Bone, Kidney)

[43]

WBL-23-019 E1-45 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-G Doses from Unit 2 Airborne Effluents - 3rd Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 1.09E-01 mrad 1.00E+01 mrad 1.09E+00 ESE 1250 meters Gamma Air 3.01E-01 mrad 5.00E+00 mrad 6.02E+00 ESE 1250 meters NG Skin 1.81E-01 mrad N/A N/A SE 1409 meters NG Total Body 1.22E-01 mrad N/A N/A SE 1409 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 1.04E+00 mrem 7.5 mrem 1.39E+01 SE 1409 meters Bone Child / Thyroid 3.22E-01 mrem 7.5 mrem 4.29E+00 SE 1409 meters Child / Total 3.22E-01 mrem 7.5 mrem 4.29E+00 SE 1409 meters Body Population Doses Total Body Dose 3.80E-01 man-rem Maximum Organ Dose (Organ) 1.52E+00 man-rem (Bone)

[44]

WBL-23-019 E1-46 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 3-H Doses from Unit 2 Airborne Effluents - 4th Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location Beta Air 0.00E+00 mrad 1.00E+01 mrad 0.00E+00 N 1550 meters Gamma Air 0.00E+00 mrad 5.00E+00 mrad 0.00E+00 N 1550 meters NG Skin 0.00E+00 mrad N/A N/A N 4474 meters NG Total Body 0.00E+00 mrad N/A N/A N 4474 meters Organ Doses (Iodine, Tritium, Particulates with >8-Day half-life)

(Max) Child / 1.62E+00 mrem 7.5 mrem 2.16E+01 SE 1409 meters Bone Child / Thyroid 3.34E-01 mrem 7.5 mrem 4.45E+00 SE 1409 meters Child / Total 3.34E-01 mrem 7.5 mrem 4.45E+00 SE 1409 meters Body Population Doses Total Body Dose 2.84E-01 man-rem Maximum Organ Dose (Organ) 1.34E+00 man-rem (Bone)

[45]

WBL-23-019 E1-47 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 4-A Doses from Unit 1 Liquid Effluents - 1st Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 2.60E-03 mrem 5.00E+00 5.20E-02 Child GI-LLI 2.80E-03 mrem 5.00E+00 5.60E-02 Child Kidney 2.60E-03 mrem 5.00E+00 5.20E-02 Child Liver 2.70E-03 mrem 5.00E+00 5.40E-02 Child Lung 2.60E-03 mrem 5.00E+00 5.20E-02 Child Thyroid 2.60E-03 mrem 5.00E+00 5.20E-02 Child Total Body 2.60E-03 mrem 1.50E+00 1.73E-01 Average river flow past WBN (cubic feet per second): 46,417 cfs Population Doses Total Body Dose 2.10E-01 man-rem Maximum Organ Dose (Organ) 2.10E-01 man-rem (Bone, GI-LLI, Kidney, Liver, Lung, Thyroid)

Table 4-B Doses from Unit 1 Liquid Effluents - 2nd Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 1.70E-02 mrem 5.00E+00 3.40E-01 Adult GI-LLI 7.00E-02 mrem 5.00E+00 1.40E-01 Child Kidney 1.70E-02 mrem 5.00E+00 3.40E-01 Child Liver 2.00E-02 mrem 5.00E+00 4.00E-01 Child Lung 1.70E-02 mrem 5.00E+00 3.40E-01 Child Thyroid 1.70E-02 mrem 5.00E+00 3.40E-01 Child Total Body 2.40E-02 mrem 1.50E+00 1.66E+00 Average river flow past WBN (cubic feet per second): 14,237 cfs Population Doses Total Body Dose 6.90E-01 man-rem Maximum Organ Dose (Organ) 1.00E+01 man-rem (GI-LLI)

[46]

WBL-23-019 E1-48 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 4-C Doses from Unit 1 Liquid Effluents - 3rd Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 6.50E-03 mrem 5.00E+00 1.30E-01 Child GI-LLI 6.50E-03 mrem 5.00E+00 1.30E-01 Child Kidney 6.50E-03 mrem 5.00E+00 1.30E-01 Child Liver 6.50E-03 mrem 5.00E+00 1.30E-01 Child Lung 6.50E-03 mrem 5.00E+00 1.30E-01 Child Thyroid 6.50E-03 mrem 5.00E+00 1.30E-01 Child Total Body 6.50E-03 mrem 1.50E+00 4.33E-01 Average river flow past WBN (cubic feet per second): 22,671 cfs Population Doses Total Body Dose 5.80E-01 man-rem Maximum Organ Dose (Organ) 5.80E-01 man-rem (Bone, GI-LLI, Kidney, Liver, Lung, Thyroid)

Table 4-D Doses from Unit 1 Liquid Effluents - 4th Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 6.20E-03 mrem 5.00E+00 1.24E-01 Child GI-LLI 6.20E-03 mrem 5.00E+00 1.24E-01 Child Kidney 6.20E-03 mrem 5.00E+00 1.24E-01 Child Liver 6.20E-03 mrem 5.00E+00 1.24E-01 Child Lung 6.20E-03 mrem 5.00E+00 1.24E-01 Child Thyroid 6.20E-03 mrem 5.00E+00 1.24E-01 Child Total Body 6.20E-03 mrem 1.50E+00 4.13E-01 Average river flow past WBN (cubic feet per second): 27,140 cfs Population Doses Total Body Dose 5.40E-01 man-rem Maximum Organ Dose (Organ) 5.40E-01 man-rem (Bone, GI-LLI, Kidney, Liver, Lung, Thyroid)

[47]

WBL-23-019 E1-49 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 4-E Doses from Unit 2 Liquid Effluents - 1st Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 7.90E-04 mrem 5.00E+00 1.58E-02 Adult GI-LLI 1.20E-03 mrem 5.00E+00 2.40E-02 Child Kidney 7.80E-04 mrem 5.00E+00 1.56E-02 Child Liver 7.90E-04 mrem 5.00E+00 1.58E-02 Child Lung 7.80E-04 mrem 5.00E+00 1.56E-02 Child Thyroid 7.80E-04 mrem 5.00E+00 1.56E-02 Child Total Body 7.90E-04 mrem 1.50E+00 5.27E-02 Average river flow past WBN (cubic feet per second): 27,140 cfs Population Doses Total Body Dose 5.30E-02 man-rem Maximum Organ Dose (Organ) 5.40E-02 man-rem (GI-LLI)

Table 4-F Doses from Unit 2 Liquid Effluents - 2nd Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 1.60E-02 mrem 5.00E+00 3.20E-01 Adult GI-LLI 6.90E-02 mrem 5.00E+00 1.38E+00 Child Kidney 1.60E-02 mrem 5.00E+00 3.20E-01 Adult Liver 1.90E-02 mrem 5.00E+00 3.80E-01 Child Lung 1.60E-02 mrem 5.00E+00 3.20E-01 Child Thyroid 1.60E-02 mrem 5.00E+00 3.20E-01 Child Total Body 2.30E-02 mrem 1.50E+00 1.53E+00 Average river flow past WBN (cubic feet per second): 14,237 cfs Population Doses Total Body Dose 2.30E-02 man-rem Maximum Organ Dose (Organ) 9.30E-01 man-rem (GI-LLI)

[48]

WBL-23-019 E1-50 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 4-G Doses from Unit 2 Liquid Effluents - 3rd Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 1.50E-03 mrem 5.00E+00 3.00E-02 Child GI-LLI 1.50E-03 mrem 5.00E+00 3.00E-02 Child Kidney 1.50E-03 mrem 5.00E+00 3.00E-02 Child Liver 1.50E-03 mrem 5.00E+00 3.00E-02 Child Lung 1.50E-03 mrem 5.00E+00 3.00E-02 Child Thyroid 1.50E-03 mrem 5.00E+00 3.00E-02 Child Total Body 1.50E-03 mrem 1.50E+00 1.00E-01 Average river flow past WBN (cubic feet per second): 22,671 cfs Population Doses Total Body Dose 1.30E-01 man-rem Maximum Organ Dose (Organ) 1.30E-01 man-rem (Bone, GI-LLI, Kidney, Liver, Lung, Thyroid)

Table 4-H Doses from Unit 2 Liquid Effluents - 4th Quarter Individual Doses Age Group Organ Dose Quarterly Limit Percent of Limit Child Bone 1.40E-03 mrem 5.00E+00 2.80E-02 Child GI-LLI 1.40E-03 mrem 5.00E+00 2.80E-02 Child Kidney 1.40E-03 mrem 5.00E+00 2.80E-02 Child Liver 1.40E-03 mrem 5.00E+00 2.80E-02 Child Lung 1.40E-03 mrem 5.00E+00 2.80E-02 Child Thyroid 1.40E-03 mrem 5.00E+00 2.80E-02 Child Total Body 1.40E-03 mrem 1.50E+00 9.33E-02 Average river flow past WBN (cubic feet per second): 27,140 cfs Population Doses Total Body Dose 1.20E-01 man-rem Maximum Organ Dose (Organ) 1.20E-01 man-rem (Bone, GI-LLI, Kidney, Liver, Lung, Thyroid)

[49]

WBL-23-019 E1-51 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Radiological Impact Table 5 Total Dose from Fuel Cycle Dose First Second Third Fourth Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)

Total body air 4.57E-02 4.22E-02 1.73E-01 1.03E-01 (submersion)

Critical organ dose 1.18E+00 1.06E+00 2.09E+00 3.37E+00 (airborne)

Total body 3.39E-03 4.70E-02 8.00E-03 7.60E-03 dose (liquid)

Maximum organ dose 4.00E-03 1.39E-01 8.00E-03 7.60E-03 (liquid)

Direct Radiation 0.00E-00 0.00E-00 0.00E-00 0.00E-00 Dose Total 1.23E+00 1.29E+00 2.28E+00 3.49E+00 Cumulative Total Dose (mrem) 8.29E+00 Annual Dose Limit (mrem) 2.50E+01 Percent of Limit 3.32E+01 Thyroid Total body air 4.57E-02 4.22E-02 1.73E-01 1.03E-01 (submersion)

Thyroid dose 3.07E-01 3.42E-01 6.49E-01 8.18E-01 (airborne)

Total body dose 3.39E-03 4.70E-02 8.00E-03 7.60E-03 (liquid)

Thyroid dose 3.38E-03 3.30E-02 8.00E-03 7.60E-03 (liquid)

Total 3.59E-01 4.64E-01 8.38E-01 9.36E-01 Cumulative Total Dose (mrem) 2.60E+00 Annual Dose Limit (mrem) 7.50E+01 Percent of Limit 3.46E+00

[50]

WBL-23-019 E1-52 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report VII. Independent Spent Fuel Storage Installation The Tennessee Valley Authority (TVA) selected the Holtec International Storage Module (HI-STORM) Flood/Wind (FW) Multi-Purpose Canister (MPC) Storage System for storage of spent fuel at the Watts Bar Nuclear (WBN) Plant Independent Spent Fuel Storage Installation (ISFSI). The HI-STORM FW MPC Storage System has been reviewed and approved by the Nuclear Regulatory Commission (NRC) and Certificate of Compliance (CoC) number 1032 Title 10 CFR 72.104, Criteria for radioactive materials in effluents and direct radiation from an ISFSI or Monitored Retrievable Storage Installation (MSRI), requires that the annual dose equivalent to any real individual, located beyond the controlled area, must not exceed 25 millirem (mrem) to the whole body, 75 mrem to the thyroid, and 25 mrem to any other critical organ, as a result of exposure to direct radiation from ISFSI operations.

WBN successfully placed its first loaded HI-STORM FW on the ISFSI pad on October 5, 2016. The TVA ISFSI storage pad is located within the plants protected area. The storage pad is designed to adequately support both static and dynamic loads of 80 loaded Holtec HI-STORM FW MPC Storage Systems. Currently, the storage pad contains twenty six canisters.

The off-site dose for normal operating conditions to a real individual beyond the controlled area boundary is limited by 10 CFR 72.104(a) to a maximum of 25 mrem/year whole body, 75 mrem/year thyroid, and 25 mrem/year for other critical organs, including contributions from all nuclear fuel cycle operations. For this report, total site releases include the WBN ISFSI as part of plant operations. By its design, there were no liquid or gaseous effluents from the operation of the ISFSI during 2022.

Radiological Environmental Monitoring Program assessment of direct radiation exposure by dosimeters at or near the site boundary is 4.8 mrem/yr for onsite locations. As stated in the WBN ODCM and per this report, the dose to a member of the public inside the unrestricted boundary is then performed. Results from onsite dosimeter measurement and subtracting background indicated that the highest dosimeter reading at the boundary of the protected area was 248 mrem for the Foxtrot Rad Pad -East location AR052. CR1848880 was written and an Occupancy Factor study was performed at this location in ALARA Technical Document #2023-01. This area is a dirt field on the opposite side of the main road. There were no nearby walkways or structures allowing personnel occupancy. The Occupancy Factor study yielded an annualized dose of 0.17 mrem. This annualized dose is below the 100 mrem threshold for public exposure. All area OSL readings were below 10 CFR 20.1502 limits.

Based on the above measurements performed during this reporting period, it can be concluded that the radiation exposure due to the ISFSI, combined with all other fuel cycle operations, will not exceed the regulatory requirements of 25 mrem/year in 10 CFR 72.104(a) and 40 CFR Part 190.

[51]

WBL-23-019 E1-53 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data VIII. Meteorological Data

[52]

WBL-23-019 E1-54 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.140 0.187 0.047 0.000 0.000 0.000 0.373 NNE 0.000 0.000 0.000 0.187 0.467 0.047 0.000 0.000 0.000 0.700 NE 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.093 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.047 0.047 0.140 0.047 0.000 0.000 0.280 SSW 0.000 0.000 0.000 0.000 1.027 1.261 0.093 0.000 0.000 2.381 SW 0.000 0.000 0.000 0.000 0.373 0.093 0.000 0.000 0.000 0.467 WSW 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.187 WNW 0.000 0.000 0.000 0.000 0.047 0.000 0.093 0.000 0.000 0.140 NW 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.093 NNW 0.000 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.140 SUBTOTAL 0.000 0.000 0.000 0.420 2.334 1.914 0.280 0.000 0.000 4.949 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS A 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 7.97 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[53]

WBL-23-019 E1-55 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.140 0.373 0.140 0.000 0.000 0.000 0.654 NNE 0.000 0.000 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.140 NE 0.000 0.000 0.000 0.140 0.047 0.000 0.000 0.000 0.000 0.187 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 S 0.000 0.000 0.000 0.140 0.187 0.047 0.047 0.000 0.000 0.420 SSW 0.000 0.000 0.000 0.467 0.514 0.467 0.000 0.000 0.000 1.447 SW 0.000 0.000 0.000 0.093 0.093 0.047 0.047 0.000 0.000 0.280 WSW 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.000 0.093 0.093 0.047 0.000 0.000 0.233 WNW 0.000 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.093 NW 0.000 0.000 0.047 0.047 0.047 0.093 0.047 0.000 0.000 0.280 NNW 0.000 0.000 0.000 0.093 0.233 0.187 0.000 0.000 0.000 0.514 SUBTOTAL 0.000 0.000 0.047 1.261 1.681 1.167 0.233 0.000 0.000 4.388 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS B 94 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 94 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 7.06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[54]

WBL-23-019 E1-56 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.140 0.233 0.140 0.000 0.000 0.000 0.514 NNE 0.000 0.000 0.047 0.187 0.140 0.000 0.000 0.000 0.000 0.373 NE 0.000 0.000 0.093 0.187 0.187 0.000 0.000 0.000 0.000 0.467 ENE 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.000 0.000 0.187 E 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.140 0.000 0.000 0.000 0.000 0.000 0.140 S 0.000 0.000 0.047 0.327 0.000 0.140 0.000 0.000 0.000 0.514 SSW 0.000 0.000 0.047 1.261 0.467 0.187 0.000 0.000 0.000 1.961 SW 0.000 0.000 0.000 0.560 0.187 0.047 0.093 0.000 0.000 0.887 WSW 0.000 0.000 0.000 0.047 0.047 0.140 0.000 0.000 0.000 0.233 W 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.000 0.000 0.140 0.047 0.000 0.000 0.000 0.187 NW 0.000 0.000 0.000 0.000 0.093 0.140 0.000 0.000 0.000 0.233 NNW 0.000 0.000 0.047 0.047 0.047 0.233 0.000 0.000 0.000 0.373 SUBTOTAL 0.000 0.000 0.467 3.081 1.541 1.120 0.093 0.000 0.000 6.303 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS C 135 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 135 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 5.77 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[55]

WBL-23-019 E1-57 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.607 1.167 2.288 2.988 0.093 0.000 0.000 7.143 NNE 0.000 0.000 0.747 1.261 1.634 0.327 0.093 0.000 0.000 4.062 NE 0.000 0.000 0.794 1.074 0.373 0.047 0.000 0.000 0.000 2.288 ENE 0.000 0.000 0.747 0.887 0.233 0.093 0.000 0.000 0.000 1.961 E 0.000 0.047 0.420 0.140 0.047 0.000 0.000 0.000 0.000 0.654 ESE 0.000 0.140 0.233 0.047 0.000 0.000 0.000 0.000 0.000 0.420 SE 0.000 0.047 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.280 SSE 0.000 0.093 0.187 0.093 0.000 0.047 0.000 0.000 0.000 0.420 S 0.000 0.000 0.420 0.420 0.233 0.327 0.327 0.000 0.000 1.727 SSW 0.000 0.093 1.074 0.980 1.120 1.681 0.140 0.000 0.000 5.089 SW 0.000 0.047 0.980 0.420 0.747 0.327 0.047 0.000 0.000 2.568 WSW 0.000 0.093 0.327 0.467 0.514 0.093 0.000 0.000 0.000 1.494 W 0.000 0.000 0.047 0.654 0.514 0.140 0.000 0.000 0.000 1.354 WNW 0.000 0.000 0.280 0.794 0.607 0.233 0.000 0.000 0.000 1.914 NW 0.000 0.000 0.187 0.327 0.934 0.980 0.000 0.000 0.000 2.428 NNW 0.000 0.047 0.187 0.607 1.167 2.007 0.187 0.000 0.000 4.202 SUBTOTAL 0.000 0.607 7.470 9.337 10.411 9.290 0.887 0.000 0.000 38.002 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS D 817 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 814 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 5.98 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[56]

WBL-23-019 E1-58 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.420 0.373 0.140 0.047 0.000 0.000 0.000 0.980 NNE 0.000 0.047 0.140 0.140 0.000 0.000 0.000 0.000 0.000 0.327 NE 0.000 0.093 0.654 0.187 0.000 0.000 0.000 0.000 0.000 0.934 ENE 0.000 0.187 0.467 0.093 0.000 0.000 0.000 0.000 0.000 0.747 E 0.000 0.000 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.187 ESE 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SE 0.000 0.047 0.187 0.000 0.047 0.000 0.000 0.000 0.000 0.280 SSE 0.000 0.093 0.187 0.187 0.047 0.327 0.000 0.000 0.000 0.840 S 0.000 0.187 0.747 0.467 0.047 0.047 0.187 0.000 0.000 1.681 SSW 0.000 0.140 1.307 1.167 1.167 0.514 0.047 0.000 0.000 4.342 SW 0.000 0.233 0.840 0.747 0.233 0.093 0.000 0.000 0.000 2.148 WSW 0.000 0.140 0.700 0.140 0.187 0.047 0.000 0.000 0.000 1.214 W 0.000 0.140 0.654 0.327 0.047 0.047 0.000 0.000 0.000 1.214 WNW 0.000 0.280 0.373 0.373 0.093 0.093 0.000 0.000 0.000 1.214 NW 0.000 0.093 0.327 0.560 0.327 0.000 0.000 0.000 0.000 1.307 NNW 0.000 0.280 0.467 0.514 0.187 0.000 0.000 0.000 0.000 1.447 SUBTOTAL 0.000 2.054 7.703 5.322 2.521 1.214 0.233 0.000 0.000 19.048 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS E 411 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 408 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 3.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[57]

WBL-23-019 E1-59 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.002 0.187 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.328 NNE 0.001 0.047 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.187 NE 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.094 ENE 0.002 0.233 0.280 0.000 0.000 0.000 0.000 0.000 0.000 0.516 E 0.001 0.093 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.281 ESE 0.001 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.188 SE 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SSE 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.094 S 0.001 0.093 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.235 SSW 0.002 0.093 0.327 0.047 0.000 0.047 0.000 0.000 0.000 0.516 SW 0.005 0.467 0.654 0.047 0.000 0.000 0.000 0.000 0.000 1.172 WSW 0.006 0.887 0.373 0.000 0.000 0.000 0.000 0.000 0.000 1.266 W 0.010 1.447 0.654 0.000 0.000 0.000 0.000 0.000 0.000 2.111 WNW 0.007 0.887 0.607 0.000 0.000 0.000 0.000 0.000 0.000 1.501 NW 0.006 0.794 0.420 0.093 0.000 0.000 0.000 0.000 0.000 1.313 NNW 0.002 0.187 0.280 0.000 0.000 0.000 0.000 0.000 0.000 0.469 SUBTOTAL 0.047 5.649 4.342 0.233 0.000 0.047 0.000 0.000 0.000 10.317 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS F 225 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 221 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 1.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[58]

WBL-23-019 E1-60 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2022 - MAR 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.001 0.280 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.421 NNE 0.001 0.187 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.421 NE 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 ENE 0.001 0.093 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.328 E 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 ESE 0.001 0.280 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.375 SE 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 SSE 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.140 S 0.001 0.187 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.234 SSW 0.001 0.187 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.328 SW 0.004 1.027 0.514 0.000 0.000 0.000 0.000 0.000 0.000 1.545 WSW 0.011 2.568 1.261 0.000 0.000 0.000 0.000 0.000 0.000 3.839 W 0.013 3.735 0.934 0.000 0.000 0.000 0.000 0.000 0.000 4.681 WNW 0.008 2.241 0.514 0.000 0.000 0.000 0.000 0.000 0.000 2.762 NW 0.003 0.794 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.936 NNW 0.002 0.560 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.702 SUBTOTAL 0.047 12.465 4.435 0.047 0.000 0.000 0.000 0.000 0.000 16.993 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS G 368 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 364 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/04/15 MEAN WIND SPEED = 1.27 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[59]

WBL-23-019 E1-61 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.138 0.138 0.415 0.000 0.000 0.000 0.691 NNE 0.000 0.000 0.000 0.092 0.322 0.230 0.000 0.000 0.000 0.645 NE 0.000 0.000 0.046 0.000 0.184 0.184 0.000 0.000 0.000 0.415 ENE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.046 0.046 0.092 0.092 0.000 0.000 0.000 0.276 SSW 0.000 0.000 0.000 0.092 0.645 0.737 0.000 0.000 0.000 1.474 SW 0.000 0.000 0.000 0.046 0.092 0.276 0.000 0.000 0.000 0.415 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.092 0.138 0.276 0.000 0.000 0.000 0.507 SUBTOTAL 0.000 0.000 0.092 0.553 1.796 2.303 0.046 0.000 0.000 4.790 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS A 104 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 104 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 7.41 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[60]

WBL-23-019 E1-62 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.276 0.184 0.184 0.000 0.000 0.000 0.691 NNE 0.000 0.000 0.046 0.276 0.322 0.184 0.000 0.000 0.000 0.829 NE 0.000 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.184 ENE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.184 0.138 0.046 0.000 0.000 0.000 0.368 SSW 0.000 0.000 0.000 0.507 0.691 0.645 0.046 0.000 0.000 1.889 SW 0.000 0.000 0.000 0.368 0.138 0.184 0.000 0.000 0.000 0.691 WSW 0.000 0.000 0.000 0.046 0.046 0.092 0.000 0.000 0.000 0.184 W 0.000 0.000 0.000 0.000 0.138 0.138 0.000 0.000 0.000 0.276 WNW 0.000 0.000 0.000 0.000 0.138 0.046 0.000 0.000 0.000 0.184 NW 0.000 0.000 0.046 0.000 0.046 0.046 0.000 0.000 0.000 0.138 NNW 0.000 0.000 0.000 0.184 0.092 0.092 0.000 0.000 0.000 0.368 SUBTOTAL 0.000 0.000 0.138 2.027 2.119 1.658 0.046 0.000 0.000 5.988 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS B 130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 6.56 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[61]

WBL-23-019 E1-63 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.230 0.092 0.138 0.000 0.000 0.000 0.461 NNE 0.000 0.000 0.046 0.276 0.092 0.046 0.000 0.000 0.000 0.461 NE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.046 0.184 0.046 0.000 0.000 0.000 0.000 0.276 E 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.184 SSE 0.000 0.000 0.046 0.000 0.092 0.092 0.000 0.000 0.000 0.230 S 0.000 0.000 0.046 0.322 0.184 0.000 0.000 0.000 0.000 0.553 SSW 0.000 0.000 0.092 1.013 0.967 0.184 0.000 0.000 0.000 2.257 SW 0.000 0.000 0.000 1.105 0.046 0.092 0.000 0.000 0.000 1.244 WSW 0.000 0.000 0.046 0.138 0.000 0.046 0.000 0.000 0.000 0.230 W 0.000 0.000 0.000 0.092 0.046 0.046 0.000 0.000 0.000 0.184 WNW 0.000 0.000 0.000 0.046 0.046 0.184 0.000 0.000 0.000 0.276 NW 0.000 0.000 0.000 0.046 0.000 0.230 0.000 0.000 0.000 0.276 NNW 0.000 0.000 0.046 0.230 0.092 0.092 0.000 0.000 0.000 0.461 SUBTOTAL 0.000 0.000 0.507 3.915 1.750 1.152 0.000 0.000 0.000 7.324 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS C 159 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 159 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 5.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[62]

WBL-23-019 E1-64 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.737 1.152 0.967 0.322 0.000 0.000 0.000 3.178 NNE 0.000 0.000 0.461 0.921 0.415 0.092 0.000 0.000 0.000 1.889 NE 0.000 0.046 0.921 0.322 0.092 0.000 0.000 0.000 0.000 1.382 ENE 0.000 0.000 0.737 0.368 0.092 0.000 0.000 0.000 0.000 1.198 E 0.000 0.092 0.368 0.046 0.000 0.000 0.000 0.000 0.000 0.507 ESE 0.000 0.092 0.322 0.138 0.000 0.000 0.000 0.000 0.000 0.553 SE 0.000 0.092 0.553 0.092 0.000 0.000 0.000 0.000 0.000 0.737 SSE 0.000 0.184 0.553 0.276 0.000 0.092 0.000 0.000 0.000 1.105 S 0.000 0.046 0.829 1.013 0.507 0.092 0.046 0.000 0.000 2.533 SSW 0.000 0.046 1.290 3.132 1.428 0.737 0.000 0.000 0.000 6.633 SW 0.000 0.046 1.382 1.290 0.230 0.092 0.000 0.000 0.000 3.040 WSW 0.000 0.046 0.461 0.276 0.184 0.184 0.000 0.000 0.000 1.152 W 0.000 0.000 0.276 0.599 0.461 0.046 0.000 0.000 0.000 1.382 WNW 0.000 0.000 0.276 0.276 0.368 0.461 0.000 0.000 0.000 1.382 NW 0.000 0.046 0.230 0.046 0.184 0.184 0.000 0.000 0.000 0.691 NNW 0.000 0.000 0.368 0.737 0.921 0.415 0.000 0.000 0.000 2.441 SUBTOTAL 0.000 0.737 9.765 10.686 5.850 2.718 0.046 0.000 0.000 29.802 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS D 648 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 647 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 4.52 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[63]

WBL-23-019 E1-65 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.645 0.783 0.322 0.046 0.000 0.000 0.000 1.796 NNE 0.000 0.046 0.138 0.184 0.138 0.092 0.000 0.000 0.000 0.599 NE 0.000 0.092 0.184 0.092 0.046 0.000 0.000 0.000 0.000 0.415 ENE 0.000 0.000 0.461 0.276 0.000 0.000 0.000 0.000 0.000 0.737 E 0.000 0.000 0.230 0.092 0.000 0.000 0.000 0.000 0.000 0.322 ESE 0.000 0.138 0.276 0.000 0.000 0.000 0.000 0.000 0.000 0.415 SE 0.000 0.230 0.184 0.000 0.046 0.000 0.000 0.000 0.000 0.461 SSE 0.000 0.184 0.461 0.046 0.092 0.000 0.000 0.000 0.000 0.783 S 0.000 0.322 0.967 0.322 0.092 0.046 0.000 0.000 0.000 1.750 SSW 0.000 0.507 2.303 1.290 0.322 0.184 0.000 0.000 0.000 4.606 SW 0.000 0.921 1.704 0.138 0.184 0.000 0.000 0.000 0.000 2.948 WSW 0.000 0.967 0.507 0.230 0.000 0.000 0.000 0.000 0.000 1.704 W 0.000 0.461 0.507 0.184 0.000 0.046 0.000 0.000 0.000 1.198 WNW 0.000 0.184 0.184 0.138 0.138 0.046 0.000 0.000 0.000 0.691 NW 0.000 0.138 0.415 0.092 0.000 0.000 0.000 0.000 0.000 0.645 NNW 0.000 0.000 0.507 0.737 0.368 0.138 0.000 0.000 0.000 1.750 SUBTOTAL 0.000 4.192 9.673 4.606 1.750 0.599 0.000 0.000 0.000 20.820 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS E 452 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 452 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 3.07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[64]

WBL-23-019 E1-66 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.276 0.000 0.000 0.000 0.000 0.000 0.000 0.322 NNE 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.138 NE 0.000 0.092 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.230 ENE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.046 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.276 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 S 0.000 0.276 0.184 0.046 0.000 0.000 0.000 0.000 0.000 0.507 SSW 0.000 0.691 1.013 0.000 0.000 0.000 0.000 0.000 0.000 1.704 SW 0.000 1.750 1.105 0.000 0.000 0.000 0.000 0.000 0.000 2.856 WSW 0.000 1.428 1.059 0.000 0.000 0.000 0.000 0.000 0.000 2.487 W 0.000 1.889 0.368 0.000 0.000 0.000 0.000 0.000 0.000 2.257 WNW 0.000 0.737 0.276 0.000 0.000 0.000 0.000 0.000 0.000 1.013 NW 0.000 0.461 0.368 0.000 0.000 0.000 0.000 0.000 0.000 0.829 NNW 0.000 0.000 0.184 0.046 0.000 0.000 0.000 0.000 0.000 0.230 SUBTOTAL 0.000 7.738 5.297 0.092 0.000 0.000 0.000 0.000 0.000 13.128 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS F 285 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 285 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 1.50 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[65]

WBL-23-019 E1-67 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2022 - JUN 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.185 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 E 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.139 S 0.001 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.277 SSW 0.002 0.553 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.785 SW 0.009 2.948 0.737 0.000 0.000 0.000 0.000 0.000 0.000 3.694 WSW 0.013 4.238 0.875 0.000 0.000 0.000 0.000 0.000 0.000 5.126 W 0.009 2.856 0.645 0.000 0.000 0.000 0.000 0.000 0.000 3.510 WNW 0.006 1.428 0.829 0.000 0.000 0.000 0.000 0.000 0.000 2.263 NW 0.004 1.013 0.461 0.000 0.046 0.000 0.000 0.000 0.000 1.524 NNW 0.001 0.184 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.369 SUBTOTAL 0.046 13.772 4.284 0.000 0.046 0.000 0.000 0.000 0.000 18.148 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS G 394 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 394 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2171 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2022/07/19 MEAN WIND SPEED = 1.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[66]

WBL-23-019 E1-68 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[67]

WBL-23-019 E1-69 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[68]

WBL-23-019 E1-70 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS C 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[69]

WBL-23-019 E1-71 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS D 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[70]

WBL-23-019 E1-72 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS E 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[71]

WBL-23-019 E1-73 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS F 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[72]

WBL-23-019 E1-74 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2022 - SEP 30, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 0 TOTAL HOURS OF STABILITY CLASS G 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 0 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/19 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[73]

WBL-23-019 E1-75 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.056 0.169 0.112 0.000 0.000 0.000 0.337 NNE 0.000 0.000 0.000 0.000 0.112 0.225 0.000 0.000 0.000 0.337 NE 0.000 0.000 0.000 0.000 0.056 0.056 0.000 0.000 0.000 0.112 ENE 0.000 0.056 0.056 0.000 0.000 0.056 0.000 0.000 0.000 0.169 E 0.000 0.000 0.056 0.000 0.000 0.000 0.000 0.000 0.000 0.056 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.112 0.225 0.000 0.000 0.000 0.000 0.337 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.056 0.000 0.000 0.000 0.056 WNW 0.000 0.000 0.000 0.000 0.056 0.000 0.000 0.000 0.000 0.056 NW 0.000 0.000 0.000 0.000 0.056 0.056 0.000 0.000 0.000 0.112 NNW 0.000 0.000 0.000 0.056 0.000 0.056 0.000 0.000 0.000 0.112 SUBTOTAL 0.000 0.056 0.112 0.225 0.675 0.618 0.000 0.000 0.000 1.686 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS A 30 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 30 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 6.48 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[74]

WBL-23-019 E1-76 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.056 0.169 0.056 0.000 0.000 0.000 0.000 0.281 NNE 0.000 0.000 0.056 0.112 0.056 0.000 0.000 0.000 0.000 0.225 NE 0.000 0.000 0.056 0.000 0.000 0.000 0.000 0.000 0.000 0.056 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.056 0.000 0.000 0.000 0.000 0.056 SSW 0.000 0.000 0.000 0.000 0.506 0.056 0.000 0.000 0.000 0.562 SW 0.000 0.056 0.000 0.169 0.169 0.169 0.000 0.000 0.000 0.562 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.056 0.056 0.000 0.000 0.000 0.112 WNW 0.000 0.000 0.000 0.000 0.056 0.169 0.000 0.000 0.000 0.225 NW 0.000 0.000 0.000 0.000 0.281 0.000 0.000 0.000 0.000 0.281 NNW 0.000 0.000 0.000 0.056 0.112 0.112 0.000 0.000 0.000 0.281 SUBTOTAL 0.000 0.056 0.169 0.506 1.349 0.562 0.000 0.000 0.000 2.642 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS B 47 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 47 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 6.20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

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WBL-23-019 E1-77 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.281 0.000 0.056 0.000 0.000 0.000 0.337 NNE 0.000 0.000 0.112 0.112 0.112 0.112 0.000 0.000 0.000 0.450 NE 0.000 0.000 0.056 0.225 0.000 0.000 0.000 0.000 0.000 0.281 ENE 0.000 0.000 0.000 0.169 0.000 0.000 0.000 0.000 0.000 0.169 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.056 0.000 0.000 0.000 0.000 0.000 0.056 SSW 0.000 0.000 0.000 0.225 0.337 0.112 0.056 0.000 0.000 0.731 SW 0.000 0.000 0.000 0.337 0.393 0.281 0.000 0.000 0.000 1.012 WSW 0.000 0.000 0.000 0.112 0.056 0.000 0.000 0.000 0.000 0.169 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.056 0.000 0.000 0.112 0.056 0.000 0.000 0.000 0.225 NW 0.000 0.000 0.000 0.056 0.112 0.056 0.000 0.000 0.000 0.225 NNW 0.000 0.000 0.056 0.056 0.000 0.056 0.000 0.000 0.000 0.169 SUBTOTAL 0.000 0.056 0.225 1.630 1.124 0.731 0.056 0.000 0.000 3.822 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS C 68 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 68 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 5.92 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

[76]

WBL-23-019 E1-78 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 1.012 0.618 0.562 0.956 0.000 0.000 0.000 3.148 NNE 0.000 0.056 1.405 0.956 0.450 0.393 0.000 0.000 0.000 3.260 NE 0.000 0.000 1.349 0.899 0.169 0.000 0.000 0.000 0.000 2.417 ENE 0.000 0.112 1.012 0.506 0.056 0.000 0.000 0.000 0.000 1.686 E 0.000 0.056 0.506 0.169 0.000 0.000 0.000 0.000 0.000 0.731 ESE 0.000 0.112 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.393 SE 0.000 0.112 0.112 0.056 0.000 0.000 0.000 0.000 0.000 0.281 SSE 0.000 0.112 0.562 0.225 0.000 0.056 0.000 0.000 0.000 0.956 S 0.000 0.225 1.068 0.506 0.225 0.112 0.000 0.000 0.000 2.136 SSW 0.000 0.281 1.630 1.743 0.562 0.393 0.000 0.000 0.000 4.609 SW 0.000 0.169 1.630 2.417 0.393 0.337 0.056 0.000 0.000 5.003 WSW 0.000 0.112 1.068 0.843 0.337 0.337 0.000 0.000 0.000 2.698 W 0.000 0.056 0.618 0.225 0.450 0.281 0.056 0.000 0.000 1.686 WNW 0.000 0.000 0.787 0.337 0.281 0.450 0.000 0.000 0.000 1.855 NW 0.000 0.056 0.169 0.281 0.562 0.675 0.000 0.000 0.000 1.743 NNW 0.000 0.056 0.675 0.675 0.506 0.787 0.000 0.000 0.000 2.698 SUBTOTAL 0.000 1.518 13.884 10.455 4.553 4.778 0.112 0.000 0.000 35.301 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS D 630 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 628 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 4.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

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WBL-23-019 E1-79 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.225 0.731 0.506 0.337 0.000 0.000 0.000 0.000 1.799 NNE 0.000 0.112 0.899 0.169 0.169 0.000 0.000 0.000 0.000 1.349 NE 0.000 0.281 0.899 0.056 0.000 0.000 0.000 0.000 0.000 1.237 ENE 0.000 0.056 0.787 0.281 0.000 0.000 0.000 0.000 0.000 1.124 E 0.000 0.225 0.225 0.112 0.000 0.000 0.000 0.000 0.000 0.562 ESE 0.000 0.112 0.169 0.000 0.000 0.000 0.000 0.000 0.000 0.281 SE 0.000 0.169 0.056 0.000 0.000 0.000 0.000 0.000 0.000 0.225 SSE 0.000 0.112 0.112 0.000 0.056 0.225 0.000 0.000 0.000 0.506 S 0.000 0.337 0.731 0.225 0.169 0.000 0.000 0.000 0.000 1.461 SSW 0.000 0.169 1.630 1.124 0.225 0.056 0.000 0.000 0.000 3.204 SW 0.000 0.506 1.799 0.899 0.112 0.000 0.000 0.000 0.000 3.316 WSW 0.000 0.393 1.293 0.506 0.112 0.000 0.000 0.000 0.000 2.305 W 0.000 0.281 1.068 0.562 0.112 0.000 0.000 0.000 0.000 2.024 WNW 0.000 0.562 1.630 0.787 0.112 0.000 0.000 0.000 0.000 3.092 NW 0.000 0.618 1.124 0.450 0.337 0.000 0.000 0.000 0.000 2.530 NNW 0.000 0.056 0.562 0.225 0.112 0.056 0.000 0.000 0.000 1.012 SUBTOTAL 0.000 4.216 13.716 5.902 1.855 0.337 0.000 0.000 0.000 26.026 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS E 463 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 463 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 2.88 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

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WBL-23-019 E1-80 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.112 0.562 0.000 0.000 0.000 0.000 0.000 0.000 0.675 NNE 0.000 0.056 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.337 NE 0.000 0.112 0.112 0.056 0.000 0.000 0.000 0.000 0.000 0.281 ENE 0.000 0.056 0.169 0.056 0.000 0.000 0.000 0.000 0.000 0.281 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.056 0.056 0.000 0.000 0.000 0.000 0.000 0.000 0.112 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.112 0.112 0.000 0.000 0.000 0.000 0.000 0.000 0.225 SSW 0.000 0.112 0.225 0.000 0.000 0.000 0.000 0.000 0.000 0.337 SW 0.000 0.281 0.450 0.000 0.000 0.000 0.000 0.000 0.000 0.731 WSW 0.000 0.450 0.618 0.000 0.000 0.000 0.000 0.000 0.000 1.068 W 0.000 0.956 1.461 0.112 0.000 0.000 0.000 0.000 0.000 2.530 WNW 0.000 0.731 2.136 0.169 0.000 0.000 0.000 0.000 0.000 3.035 NW 0.000 0.899 1.124 0.169 0.000 0.000 0.000 0.000 0.000 2.192 NNW 0.000 0.225 0.337 0.056 0.000 0.000 0.000 0.000 0.000 0.618 SUBTOTAL 0.000 4.160 7.645 0.618 0.000 0.000 0.000 0.000 0.000 12.423 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS F 221 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 221 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 1.90 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

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WBL-23-019 E1-81 of 82

Watts Bar Nuclear Power Plant Units 1 and 2 2022 Annual Radioactive Effluent Release Report Meteorological Data JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2022 - DEC 31, 2022 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.225 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.506 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.056 0.112 0.000 0.000 0.000 0.000 0.000 0.000 0.169 ENE 0.000 0.000 0.056 0.000 0.000 0.000 0.000 0.000 0.000 0.056 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.112 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.112 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.169 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.169 SSW 0.000 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.281 SW 0.000 0.675 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.956 WSW 0.000 0.956 0.506 0.000 0.000 0.000 0.000 0.000 0.000 1.461 W 0.000 1.349 0.675 0.000 0.000 0.000 0.000 0.000 0.000 2.024 WNW 0.000 2.473 3.204 0.000 0.000 0.000 0.000 0.000 0.000 5.677 NW 0.000 2.867 2.867 0.056 0.000 0.000 0.000 0.000 0.000 5.790 NNW 0.000 0.675 0.225 0.000 0.000 0.000 0.000 0.000 0.000 0.899 SUBTOTAL 0.000 9.837 8.207 0.056 0.000 0.000 0.000 0.000 0.000 18.100 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1781 TOTAL HOURS OF STABILITY CLASS G 322 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 322 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1779 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2023/01/17 MEAN WIND SPEED = 1.48 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

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Enclosure 2 WATTS BAR NUCLEAR PLANT TWO-UNIT OFFSITE DOSE CALCULATION MANUAL (ODCM)

Revision 6 WBL-23-019 E2-1 of 207

WATTS BAR NUCLEAR PLANT TWO-UNIT OFFSITE DOSE CALCULATION MANUAL (ODCM)

Revision 6 Prepared by: Sara Stuhan Date: 10/23/2020 Chemistry Submitted By: Brian Watson Date: 10/27/2020 Approved By: Chris Rice Date: 10/28/2020 PORC Chairman PORC Meeting No. : 4658 Plant Manager: Beth Jenkins Effective Date: 11/16/2020 WBL-23-19 E2-2 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 1 of 205 REVISION LOG Page 1 of 1 REVISION EFFECTIVE AFFECTED DESCRIPTION OF REVISION NUMBER DATE PAGES Initial issue of Watts Bar Nuclear Plant Two-Unit ODCM (WBN Two-Unit ODCM) to address operation of both units. The WBN Two-Unit ODCM, Revision 0 is based on Unit 0 ODCM, Revision 25 and 0 10/22/15 All recent changes to the monitored locations. The WBN Two-Unit ODCM will be the governing document for WBN Unit 1 and WBN Unit 2.

Changed Table 1.1-2 to delete Item 3d, Isokinetic Flow Control Equipment, and Applicability Notation 6 regarding isokinetic flow 1 10/22/15 16,17 control operability and the requirement to restore isokinetic flow manually. ECP 65345A.

DCN 66360 for Radiation Monitor 0-RM-90-101 replacement, Sampler flow rate measuring device renamed from FIS-90-101C to 2 07/24/18 16, 19, 179 RE-90-101 Monitor Item 028 and 0-FI-90-101A. REMP Milk control location Farm BB replaced with Farm MFF (Mounts Family Farm) due to closing of Farm BB and Well water update to Farm H.

68, 70, 101, Changed CTBD minimum flowrate setpoint from 20,000 gpm to 3 08/07/18 30,000 gpm in support of DCP 66673.

185 DCN 66360 for Radiation Monitor 0-RE-90-101, removed references to the local sampler flow rate measuring device 0-FI-90-101A. This non-calibrated device is on the skid and will not be used for logging flow or operability. Added 0-RI-90-101 Sample Flow readout at local 1, 2, 5, 16, 19, 4 05/28/19 indicator panel.

179 Removed Hornsby Dairy Farm as milk source due to closure and added SV dairy farm. Replaced REMP Well 1 due to open borehole construction with MW-07 to monitor top of bedrock.

Changed Action E to two separate actions (E, N) and clarified applicability.

Corrected data discrepancies with FSAR in Table 7.6.

1, 2, 4, 5, 16- Added monthly grab sampling of well water within 5 miles of site if 5 06/24/2019 18, 156, 176, used as drinking water (CR #1514745).

200, 201, 205 Added ODCM review checklist item 29 to review calculation WBNTSR115 (CR #1464030).

Changed BSL to ECM on Appendix C.

13 Changed calibration requirement for 1-FIT-15-42.

DEC WBN-19-712.

6 11/16/2020 185 Added reference for U2 tritium production. ECP 66415.

WBL-23-19 E2-3 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 2 of 205 LIST OF EFFECTIVE PAGES PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER 30 0 1 6 31 0 2 6 32 0 3 3 33 0 4 1 34 0 5 6 35 0 6 0 36 0 7 0 37 0 8 0 38 0 9 0 39 0 10 0 40 0 11 0 41 0 12 0 42 0 13 1 43 0 14 0 44 0 15 0 45 0 16 5 46 0 17 2 47 0 18 1 48 0 19 4 49 0 20 0 50 0 21 0 51 0 22 0 52 0 23 0 53 0 24 0 54 0 25 0 55 0 26 0 56 0 27 0 57 0 28 0 58 0 29 0 WBL-23-19 E2-4 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 3 of 205 LIST OF EFFECTIVE PAGES PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER 59 0 89 0 60 0 90 0 61 0 91 0 62 0 92 0 63 0 93 0 64 0 94 0 65 0 95 0 66 0 96 0 67 0 97 0 68 3 98 0 69 0 99 0 70 3 100 0 71 0 101 3 72 0 102 0 73 0 103 0 74 0 104 0 75 0 105 0 76 0 106 0 77 0 107 0 78 0 108 0 79 0 109 0 80 0 110 0 81 0 111 0 82 0 112 0 83 0 113 0 84 0 114 0 85 0 115 0 86 0 116 0 87 0 117 0 88 0 118 0 WBL-23-19 E2-5 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 4 of 205 LIST OF EFFECTIVE PAGES PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER 119 0 149 0 120 0 150 0 121 0 151 0 122 0 152 0 123 0 153 0 124 0 154 0 125 0 155 0 126 0 156 1 127 0 157 0 128 0 158 0 129 0 159 0 130 0 160 0 131 0 161 0 132 0 162 0 133 0 163 0 134 0 164 0 135 0 165 0 136 0 166 0 137 0 167 0 138 0 168 0 139 0 169 0 140 0 170 0 141 0 171 0 142 0 172 0 143 0 173 0 144 0 174 0 145 0 175 0 146 0 176 1 147 0 177 0 148 0 178 0 WBL-23-19 E2-6 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 5 of 205 LIST OF EFFECTIVE PAGES PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER 179 4 180 0 181 0 182 0 183 0 184 0 185 4 186 0 187 0 188 0 189 0 190 0 191 0 192 0 193 0 194 0 195 0 196 0 197 0 198 0 199 0 200 1 201 1 202 0 203 0 204 0 205 1 WBL-23-19 E2-7 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 6 of 205 TABLE OF CONTENTS (Page 1 of 2)

TABLE OF CONTENTS ................................................................................................................................................. 6 LIST OF TABLES/FIGURES .......................................................................................................................................... 7

1.0 INTRODUCTION

. ...................................................................................................... 8 1.0/2.0 - CONTROLS AND SURVEILLANCE REQUIREMENTS................................................................................... 9 1/2.0 APPLICABILITY .................................................................................................................................................... 9 1/2.1 INSTRUMENTATION .......................................................................................................................................... 10 1/2.1.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION ..................................................... 10 1/2.1.2 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION ............................................... 15 1/2.1.3 METEOROLOGICAL INSTRUMENTATION/DATA .......................................................................................... 21 1/2.2 RADIOACTIVE EFFLUENTS .............................................................................................................................. 23 1/2.2.1 LIQUID EFFLUENTS ....................................................................................................................................... 23 1/2.2.1.1 CONCENTRATION ....................................................................................................................................... 23 1/2.2.1.2 DOSE ............................................................................................................................................................ 27 1/2.2.1.3 LIQUID RADWASTE TREATMENT SYSTEM .............................................................................................. 28 1/2.2.2 GASEOUS EFFLUENTS.................................................................................................................................. 29 1/2.2.2.1 DOSE RATE ................................................................................................................................................. 29 1/2.2.2.2 DOSE - NOBLE GASES ............................................................................................................................... 33 1/2.2.2.3 DOSE - I-131, I-133, C-14, TRITIUM, AND RADIONUCLIDES IN PARTICULATE FORM WITH HALF-LIVES GREATER THAN EIGHT DAYS ............................................................................................................. 34 1/2.2.2.4 GASEOUS RADWASTE TREATMENT ........................................................................................................ 35 1/2.2.3 TOTAL DOSE .................................................................................................................................................. 36 1/2.3 RADIOLOGICAL ENVIRONMENTAL MONITORING ......................................................................................... 37 1/2.3.1 MONITORING PROGRAM .............................................................................................................................. 37 1/2.3.2 LAND USE CENSUS ....................................................................................................................................... 47 1/2.3.3 INTERLABORATORY COMPARISON PROGRAM ......................................................................................... 48 BASES ......................................................................................................................................................................... 50 3.0 DEFINITIONS ........................................................................................................................................................ 57 4.0 - (NOT USED) ........................................................................................................................................................ 63 5.0 ADMINISTRATIVE CONTROLS ............................................................................................................................ 63 6.0 - LIQUID EFFLUENTS ........................................................................................................................................... 67 7.0 - GASEOUS EFFLUENTS ................................................................................................................................... 104 8.0 - TOTAL DOSE .................................................................................................................................................... 171 9.0 - RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) ....................................................... 172

10.0 REFERENCES

................................................................................................................................................... 184 11.0 SOURCE NOTES ......186 APPENDIX A - NOTATION CONVENTIONS ............................................................................................................. 188 LIST OF ACRONYMS ............................................................................................................................ 193 LIST OF UNITS.................................................................................................................................... 194 APPENDIX B - DEVIATIONS IN THE WBN ODCM CONTROLS/SURVEILLANCE REQUIREMENTS FROM THOSE GIVEN IN NUREG-1301 ................................................................................................................... 195 APPENDIX C - WBN ODCM REVISION PROCESS .199 WBL-23-19 E2-8 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 7 of 205 TABLE OF CONTENTS (Page 2 of 2)

LIST OF TABLES/FIGURES TABLES 1.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION ... 11 2.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION - SURVEILLANCE REQUIREMENTS. 13 1.1 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION.. 16 2.1 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION - SURVEILLANCE REQUIREMENTS. 19 1.1 METEOROLOGICAL MONITORING INSTRUMENTATION.. 22 2.2 RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM 24 2.2 RADIOACTIVE GASEOUS WASTE MONITORING SAMPLING AND ANALYSIS PROGRAM 30 2.3 MINIMUM REQUIRED RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 39 2.3 REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES 44 2.3 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS - LLD.. 45 2.3 DETECTION CAPABILITIES FOR GROUNDWATER HARD-TO-DETECT NUCLIDES - LLD. 46 3.1 - FREQUENCY NOTATION 60 3.2 - OPERATIONAL MODES.. 61 6.1 - RECEPTORS FOR LIQUID DOSE CALCULATIONS. 84 6.2 - RADIONUCLIDE DECAY AND STABLE ELEMENT TRANSFER DATA. 85 6.3 - DOSE CALCULATION FACTORS. 88 6.4 - INGESTION DOSE FACTORS 90 6.5 - BIOACCUMULATION FACTORS FOR FRESHWATER FISH.. 98 6.6 - EXTERNAL DOSE FACTORS FOR STANDING ON CONTAMINATED GROUND.. 99 7.1 - WBN - OFFSITE RECEPTOR LOCATION DATA.. 145 7.2 - JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES. 146 7.3 - ADJUSTED DISPERSION FACTORS.. 153 7.4 - DOSE FACTORS FOR SUBMERSION IN NOBLE GASES. 154 7.5 - SECTOR ELEMENTS CONSIDERED FOR POPULATION DOSES 155 7.6 - POPULATION WITHIN EACH SECTOR ELEMENT.. 156 7.7 - INHALATION DOSE FACTORS. 157 9.1 - REMP - MONITORING, SAMPLING, AND ANALYSIS.. 174 9.2 - REMP - SAMPLING LOCATIONS.. 179 9.3 - REMP - DOSIMETRY LOCATIONS ................................................................................................................. 180 FIGURES 3.1 - WBN SITE AREA MAP 62 6.1 - LIQUID EFFLUENT RELEASE POINTS.. 101 6.2 - LIQUID RADWASTE SYSTEM.. 102 6.3 - STEAM GENERATOR BLOWDOWN/CONDENSATE DEMINERALIZER.. 103 7.1 - GASEOUS EFFLUENT RELEASE/DISCHARGE POINTS 165 7.2 - DETAIL OF GASEOUS RELEASE/DISCHARGE POINTS 166 7.3 - GASEOUS RADWASTE TREATMENT SYSTEM 167 7.4 - PLUME DEPLETION EFFECT FOR GROUND LEVEL RELEASES 168 7.5 - VERTICAL STANDARD DEVIATION OF MATERIAL IN A PLUME. 169 7.6 - RELATIVE DEPOSITION FOR GROUND LEVEL RELEASES 170 9.1 - REMP LOCATIONS WITHIN ONE MILE OF THE PLANT 181 9.2 - REMP LOCATIONS FROM ONE TO FIVE MILES FROM THE PLANT. 182 9.3 - REMP LOCATIONS GREATER THAN FIVE MILES FROM THE PLANT.. 183 WBL-23-19 E2-9 of 207

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1.0 INTRODUCTION

The Watts Bar Nuclear Plant (WBN) Units 1 and 2 Offsite Dose Calculation Manual (ODCM) is a supporting document of the WBN Technical Specifications (TS) required by WBN TS 5.7.2.3 1. The ODCM is divided into two major parts: Controls (Sections 1 through 5) and program description (Sections 6 through 9). References are given in each section as applicable and are further described in Section 10.0.

The first part of the ODCM (Sections 1 through 5) contains:

1) Radioactive Effluent Controls required by Section 5.7.2.7 of the WBN TS;

2) Radiological Environmental Monitoring Controls required by 10 CFR Part 50, Appendix I, Section IV.B;

3) Controls for Meteorological Monitoring Instrumentation;

4) Descriptions of the information that should be included in the Annual Radiological Environmental Operating and Radioactive Effluent Release Reports required by WBN Technical Specifications 5.9.2 and 5.9.3; and

5) Administrative Controls for the ODCM requirements.

These sections of the document have been prepared using the guidance provided in NUREG-1301 (Reference 1) and draft Nuclear Regulatory Commission Generic Letter (Reference 2). Exceptions to this guidance have been documented in Appendix B to the ODCM.

The second part of the ODCM (Sections 6 through 9) contains the methodologies and parameters used to:

1) Calculate offsite doses resulting from radioactive gaseous and liquid effluents;

2) Calculate gaseous and liquid effluent monitor Alarm/Trip setpoints; and,

3) Conduct the Radiological Environmental Monitoring Program (REMP).

These methodologies and parameters were developed using the guidance in NUREG-0133 (Reference 3);

Regulatory Guide 1.109 (Reference 4); Regulatory Guide 1.111 (Reference 5); Regulatory Guide 1.113 (Reference 6); Regulatory Guide 1.21 (Reference 7); and Radiological Assessment Branch Technical Position on Environmental Monitoring (Reference 8). Where any methodology or parameter differs from the guidance provided in the above documents, it has been documented in the text and references given for the source of the information.

1 References to the WBN TS in this ODCM refer to both the Unit 1 and Unit 2 TS (Reference 30).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 9 of 205 1.0/2.0 - CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.0 APPLICABILITY CONTROLS 1.0.1 Controls shall be met during the MODES or other specified conditions in the Applicability, except as provided in Control 1.0.2.

1.0.2 Upon discovery of a failure to meet a Control, the Action(s) of the associated Conditions shall be met.

If the Control is met or is no longer applicable prior to expiration of the Action(s), completion of the Action(s) is not required unless otherwise stated.

SURVEILLANCE REQUIREMENTS 2.0.1 Surveillance Requirements (SR) shall be met during MODES or other conditions in the Applicability for individual Controls, unless otherwise stated in the SR. Failure to meet the Control occurs when a surveillance is failed or when conditions occur between surveillances that would result in a failed surveillance if testing was performed. Failure to perform surveillance within the specified frequency shall be failure to meet the Control except as provided in SR 2.0.3. The time limits of the ACTION statements are applicable at the time it is identified that a Surveillance Requirement has not been performed. Surveillances do not have to be performed on inoperable equipment or variables outside specified limits.

2.0.2 The specified frequency for each SR is met if the surveillance is performed within 1.25 times the interval specified in the frequency, as measured from the previous performance or as measured from a time a specified condition of the frequency is met. However, the combined time interval for any three consecutive surveillance intervals shall not exceed 3.25 times the specified surveillance interval.

For frequencies specified as "once," the above interval extension does not apply.

If an Action requires periodic performance on a "once per..." basis, the above frequency extension applies to each performance after the initial performance.

Exceptions to this SR control section are stated in the individual SRs.

2.0.3 If it is discovered that a surveillance was not performed within its specified frequency, then compliance with the requirement to declare the Control not met may be delayed, from the time of discovery, up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or up to the limit of the specified frequency, whichever is less. This delay period is permitted to allow performance of the surveillance.

If the surveillance is not performed within the delay period, the Control must immediately be declared not met, and the applicable Action(s) must be entered. The Action(s) begin immediately upon expiration of the delay period.

When the surveillance is performed within the delay period and the surveillance is not met, the Control must immediately be entered. The Action(s) begin immediately upon failure to meet the surveillance.

2.0.4 Entry into a MODE or other specified condition in the Applicability of a Control shall not be made unless the Control's surveillances have been met within their specified frequency. This provision shall not prevent passage through to MODES or other specified conditions in compliance with Action(s).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 10 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.1 INSTRUMENTATION 1/2.1.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION CONTROLS 1.1.1 As required by WBN TS 5.7.2.7.a, the radioactive liquid effluent monitoring instrumentation channels shown in Table 1.1-1 shall be OPERABLE with their alarm/trip setpoints set to ensure that the limits of ODCM Control 1.2.1.1 are not exceeded. The alarm/trip setpoints of these channels shall be determined in accordance with the methodology and parameters in ODCM Section 6.2.

APPLICABILITY: This requirement is applicable as shown in Table 1.1-1.

ACTION:

a. With a radioactive liquid effluent monitoring instrumentation channel alarm/trip setpoint less conservative than required by the above control, immediately suspend the release of radioactive liquid effluents monitored by the affected channel, or declare the channel inoperable, or change the setpoint so that it is acceptably conservative.

b. With less than the minimum number of radioactive liquid effluent monitoring instrumentation channels OPERABLE, take the action shown in Table 1.1-1. Restore the inoperable instruments to OPERABLE status within 30 days and, if unsuccessful, explain in the next Annual Radioactive Effluent Release Report, pursuant to ODCM Administrative Control 5.2, why the inoperability was not corrected within 30 days.

c. The provisions of SR 2.0.4 are not applicable. Report all deviations in the Annual Radioactive Effluent Release Report.

SURVEILLANCE REQUIREMENTS 2.1.1 Each radioactive liquid effluent monitoring instrumentation channel shall be demonstrated OPERABLE by performance of the CHANNEL CHECK, SOURCE CHECK, CHANNEL CALIBRATION, and CHANNEL OPERATIONAL TEST operations at the frequencies shown in Table 2.1-1.

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MINIMUM CHANNELS ACTION APPLICABILITY INSTRUMENT OPERABLE

1. RADIOACTIVITY MONITORS PROVIDING ALARM AND AUTOMATIC TERMINATION OF RELEASE

a. Liquid Radwaste Effluent Line (0-RE-90-122) 1 A (2)

b. Steam Generator Blowdown Effluent Line 1 B (3)

(1,2-RE-90-120 and -121)*

c. Condensate Demineralizer Regenerant 1 A (2)

Effluent Line (0-RE-90-225)

2. RADIOACTIVITY MONITORS PROVIDING ALARM BUT NOT PROVIDING AUTOMATIC TERMINATION OF RELEASE

a. Essential Raw Cooling Water Effluent 1/Discharge C (1)

Header (0-RE-90-133,-134,-140,-141) Header

b. Turbine Building Sump Effluent Line 1 C (1)

(0-RE-90-212)

3. FLOW RATE MEASUREMENT DEVICES

a. Liquid Radwaste Effluent Line 1 D (2)

(0-FIT-77-5042)

b. Steam Generator Blowdown Effluent Line 1 D (3)

(1,2-FIT-15-42)

c. Condensate Demineralizer Effluent Line 1 D (2)

(0-FI-14-456)

d. Diffuser Discharge Effluent Line 1 D (2)

(0-LPF-27-98)

Applicability Notation:

(1) At all times.

(2) During releases via this pathway.

(3) During releases in MODES 1, 2, 3, and 4.

Notes:

The 1,2-RE-90-120 notation means that there are both a Unit 1 and a Unit 2 monitor with equipment numbers 1-RE-90-120 and 2-RE-90-120, respectively. This naming convention is used throughout this ODCM.

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TABLE NOTATION ACTION A - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, the contents of the tank(s) may be released to the environment provided that prior to initiating the release:

a. At least two independent samples of the tanks contents obtained by two technically qualified members of the facility staff are analyzed, and

b. At least two technically qualified members of the facility staff independently verify the release rate calculations,

c. At least two technically qualified members of the facility staff independently verify the discharge valve lineup; Otherwise, suspend release of radioactive effluents via this pathway.

ACTION B - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided grab samples are analyzed for principal gamma emitters in accordance with ODCM SR 2.2.1.1.1 and 2.2.1.1.2.

a. At least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months when the specific activity of the secondary coolant is equal to or greater than 0.01µCi/g DOSE EQUIVALENT I-131, or

b. At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months when the specific activity of the secondary coolant is less than 0.01µCi/g DOSE EQUIVALENT I-131.

ACTION C - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided that, at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , grab samples are collected and analyzed for principal gamma emitters in accordance with ODCM SR 2.2.1.1.1 and 2.2.1.1.2.

ACTION D - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided the flow rate is estimated at least once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months during actual releases. Pump curves or the change in tank level indication, if applicable, may be used to estimate flow.

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SURVEILLANCE REQUIREMENTS*

(Page 1 of 2)

CHANNEL CHANNEL SOURCE CHANNEL OPERATIONAL INSTRUMENT CHECK CHECK CALIBRATION TEST

1. RADIOACTIVITY MONITORS PROVIDING ALARM AND AUTOMATIC TERMINATION OF RELEASE

a. Liquid Radwaste Effluent D P R(3) 3Q(1)

Line (0-RE-90-122)

b. Steam Generator Blowdown D M R(3) 3Q(1, 7)

Effluent Line (1,2-RE-90-120 and -121)

c. Condensate Demineralizer D P/M** R(3) 3Q(1)

Regenerant Effluent Line (0-RE-90-225)

2. RADIOACTIVITY MONITORS PROVIDING ALARM BUT NOT PROVIDING AUTOMATIC TERMINATION OF RELEASE

a. Essential Raw Cooling D M R(3) 3Q(2)

Water Effluent Line (0-RE-90-133,-134,-140,-141)

b. Turbine Building Sump D M R(3) 3Q(2)

Effluent Line (0-RE-90-212)

3. FLOW RATE MEASUREMENT DEVICES

a. Liquid Radwaste Effluent D(4) N/A R N/A Line (0-FIT-77-5042)

b. Steam Generator Blowdown D(4) N/A R*** N/A Effluent Line (1,2-FIT-15-42)

c. Condensate Demineralizer D(4) N/A R N/A Effluent Line (0-FI-14-456)

d. Diffuser Discharge Effluent D(4) N/A Y Q Line (0-LPF-27-98)

See Table 3.1 (FREQUENCY NOTATION) for the surveillance frequency definitions.

- The source check on the condensate demineralizer radiation monitor will be performed monthly during periods of no release, and prior to each batch release during release periods (when secondary coolant activity determination (principal gamma emitters) is greater than 1x10-6 µCi/g).

- - 2-FIT-15-42 is a programmable device that has no calibration features. Therefore, a calibration verification satisfies the channel calibration requirement.

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TABLE NOTATION (1) The CHANNEL OPERATIONAL TEST shall demonstrate that automatic isolation of this pathway occurs if the instrument indicates measured levels above the alarm/trip setpoint. The CHANNEL OPERATIONAL TEST also demonstrates control room annunciation occurs if any of the following conditions exist:

1. Instrument indicates measured levels above the alarm setpoint, or

2. Indication of downscale failure, or

3. Instrumentation controls not set in operate mode, or

4. Loss of sample flow.

(2) The CHANNEL OPERATIONAL TEST shall demonstrate that control room alarm annunciation occurs if any of the following conditions exists:

1. Instrument indicates measured levels above the alarm setpoint, or

2. Indication of downscale failure, or

3. Instrumentation controls not set in operate mode.

(3) The initial CHANNEL CALIBRATION shall be performed using one or more of the reference standards certified by the National Institute of Standards and Technology (NIST) or using standards that have been obtained from suppliers that are traceable via measurement assurance activities with NIST. These standards shall permit calibrating the system over its intended range of energy and measurement range. For subsequent CHANNEL CALIBRATION, NIST traceable standards or sources that have been related to the initial calibration (transfer calibration sources) shall be used.

(4) CHANNEL CHECK shall consist of verifying indication of flow during periods of release. CHANNEL CHECK shall be made at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months on days on which continuous, periodic or batch releases are made.

(5) Reserved for future use.

(6) Reserved for future use.

(7) The CHANNEL OPERATIONAL TEST for Unit 2 monitors will be on a Quarterly (Q) basis.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 15 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.1 INSTRUMENTATION 1/2.1.2 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION CONTROLS 1.1.2 In accordance with WBN TS 5.7.2.7.a, the radioactive gaseous effluent monitoring instrumentation channels shown in Table 1.1-2 shall be OPERABLE with their alarm/trip setpoints set to ensure that the limits of ODCM Control 1.2.2.1 and Technical Specification 3.3.6 are not exceeded. The alarm/trip setpoints of these channels shall be determined and adjusted in accordance with the methodology and parameters in ODCM Section 7.1.

APPLICABILITY: As shown in Table 1.1-2.

ACTION:

a. With a radioactive gaseous effluent monitoring instrumentation channel alarm/trip setpoint less conservative than required by the above Control, immediately suspend the release of radioactive gaseous effluents monitored by the affected channel, or declare the channel inoperable, or change the setpoint so it is acceptably conservative.

b. With less than the minimum number of radioactive gaseous effluent monitoring instrumentation channels OPERABLE, take the ACTION shown in Table 1.1-2. Restore the inoperable instruments to OPERABLE status within 30 days and, if unsuccessful, explain in the next Annual Radioactive Effluent Release Report, per ODCM Administrative Control 5.2, why the inoperability was not corrected within 30 days.

c. The provisions of SR 2.0.4 are not applicable. Report all deviations in the Annual Radioactive Effluent Release Report.

SURVEILLANCE REQUIREMENTS 2.1.2. Each radioactive gaseous effluent monitoring instrumentation channel shall be demonstrated OPERABLE by performance of the CHANNEL CHECK, SOURCE CHECK, CHANNEL CALIBRATION, and CHANNEL OPERATIONAL TEST at the frequencies shown in Table 2.1-2.

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MINIMUM CHANNELS INSTRUMENT OPERABLE APPLICABILITY ACTION

1. WASTE GAS DISPOSAL SYSTEM

a. Noble Gas Activity Monitor (0-RE-90-118) 1 (9) A

b. Pressure Measuring Device 1 (9)(8) J WGDT A 0-PIS-77-115 WGDT B 0-PIS-77-114 WGDT C 0-PIS-77-113 WGDT D 0-PIS-77-100 WGDT E 0-PIS-77-101 WGDT F 0-PIS-77-102 WGDT G 0-PIS-77-145 WGDT H 0-PIS-77-146 WGDT J 0-PIS-77-147

2. CONDENSER VACUUM EXHAUST SYSTEM

a. Noble Gas Activity Monitors (1,2-RE-90-119) 1 (3) C

b. Reserved for future use.

c. Flow Rate Monitor (1,2-FE-2-256) 1 (3) B

d. Iodine/Particulate Sample Line Heat Trace 1 (3) K

[SOURCE NOTE 13]

3. SHIELD BUILDING EXHAUST SYSTEM

a. Noble Gas Low Range Activity Monitor 1 (2)(6) E (1,2-RE-90-400A)

b. Iodine/Particulate Sampler and Sampler Flow Rate 1 (2)(5) D Measuring Device (1,2-RE-90-400 - Monitor Item 028)

c. Effluent Flow Rate Measuring Device (1,2-FI-90-400) 1 (2)(6)(12) B, N

d. Reserved for future use.

e. Iodine/Particulate Sample Line Heat Trace 1 (2) G

[SOURCE NOTE 13]

f. Tritium flowrate measuring device 1 (11) M (1,2-FIQ-90-801)

4. AUXILIARY BUILDING VENTILATION SYSTEM AND FUEL HANDLING AREA VENTILATION SYSTEM

a. Noble Gas Activity Monitor (0-RE-90-101B) 1 (1) C

b. Iodine/Particulate Sampler and Sampler Flow Rate 1 (1)(5)(7) D Measuring Device (0-RE-90-101 - Monitor Item 028 or 0-RI-90-101 Sample Flow)

c. Effluent Flow Rate Measuring Device (0-FI-90-300/1B) 1 (1) B, L

d. Isokinetic Flow Control Equipment 1 (10) H

[SOURCE NOTE 11]

e. Tritium flowrate measuring device 1 (11) M (FIQ-90-800)

5. SERVICE BUILDING VENTILATION SYSTEM

a. Noble Gas Activity Monitor (0-RE-90-132B) 1 (1) C

b. Effluent Flow Rate Measuring System (0-FI-90-320/1B) 1 (1) B

6. CONTAINMENT PURGE AND EXHAUST SYSTEM

a. Noble Gas Activity Monitors (1,2-RE-90-130, 1 (4) F 1,2-RE-90-131)

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Applicability Notation:

(1) At all times.

(2) At all times. Both Unit 1 and 2 Shield Building Exhaust System equipment must meet the minimum channel OPERABLE requirement even for single unit operation.

(3) In MODES 1 through 6 when Condenser Vacuum Exhaust System is in operation.

(4) At all times in MODES 1, 2, 3, 4.

(5) Applies to charcoal and particulate filters, does not apply to detection channels.

(6) Operability of shield building noble gas activity monitor requires both flow rate and radiation inputs since the high radiation alarm is only on the effluent channel, which reads in µCi/s. When only the effluent flow rate measuring device is inoperable, the Low Rng radiation monitor is still capable of providing noble gas indication. Its associated malfunction alarm will alert Operations to any secondary failures such as loss of sample flow or detector failure. Therefore, as long as ACTION N is met, RE-90-400A can be used to meet ODCM noble gas monitor requirements.

(7) Auxiliary Building Exhaust iodine/particulate sampler may be considered operable with the isokinetic flow control equipment inoperable.

(8) The pressure indicator for the WGDT being released must be operable for the tank to be released.

(9) At all times during periods of release.

(10) Isokinetic sampling on the Auxiliary Building Exhaust is required when flow rate exceeds 160,000 SCFM. At lower flow rates, transmission factors will be used based on the measured flow rate.

(11) At all times during periods of release when irradiated TPBARs are in the Reactor or in the Spent Fuel Pool.

(12) ACTION N is not required when ACTION E is met.

Compensatory Actions ACTION A - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, the contents of the tank(s) may be released to the environment provided that prior to initiating the release:

a. At least two independent samples of the tank's contents obtained by two technically qualified members of the facility staff are analyzed, and

b. At least two technically qualified members of the Facility Staff independently verify the release rate calculations, and

c. At least two technically qualified members of the Facility Staff independently verify the discharge valve lineup; Otherwise, suspend release of radioactive effluents via this pathway.

ACTION B - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided the flow rate is estimated at least once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months during releases via this pathway.

ACTION C - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided grab samples are taken at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and these samples are analyzed for noble gases (gamma emitters) in accordance with plant procedures. Grab samples are required only during those periods when releases are being made.

ACTION D - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via the affected pathway may continue provided that within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months after the channel has been declared inoperable, samples are continuously collected with auxiliary sampling equipment as required in Table 2.2-2.

Continuous sampling is required only during those periods when releases are being made.

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Compensatory Actions (Continued)

ACTION E - With the EFF and LOW RNG channels inoperable, effluent releases may continue provided grab samples are taken at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and these samples are analyzed for noble gases (gamma emitters) in accordance with plant procedures. Grab samples are required only during those periods when releases are being made.

ACTION F - With the number of channels OPERABLE less than required by the Minimum Channel OPERABLE requirement, immediately suspend PURGING of radioactive effluents via this pathway.

ACTION G - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, planned ongoing effluent releases via the affected pathway may continue provided that within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months after the channel has been declared inoperable, the equipment is restored to OPERABLE.

ACTION H - With the required equipment inoperable, effluent releases may continue via this pathway provided the samplers transmission factor(s) are corrected for the loss of this equipment.

ACTION J - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases from that WGDT must be discontinued until the channel is OPERABLE.

ACTION K - With the heat trace inoperable and auxiliary sampling equipment required for iodine and particulate collection, effluent releases via the affected pathway may continue provided that steam generator activity is evaluated weekly to determine if a path exists for release of iodine or particulate activity, and any such activity being released is quantified in accordance with plant procedures.

ACTION L - With the required equipment INOPERABLE due to the flowrate being greater than 0 and less than 100,000 scfm, manually adjust sample loop 0-LPF-90-300 flowrate to 20 scfm +/-

1 scfm within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months to return the channel to operable status.

In addition, if the flow rate is greater than 0 and less than 40,000 scfm, then verify at least one Auxiliary Building or Fuel Handling exhaust fan is running.

ACTION M - With the required equipment inoperable, effluent releases may continue via the pathway provided that within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after the channel has been declared inoperable, samplers are replaced or tritium grab samples are taken once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Sampling is required only during those periods when applicability note (11) is met.

ACTION N - With an inoperable flow element on a discharge pathway where a fan is operating (Purge A, Purge B, ABGTS, or EGTS), effluent release may continue provided: (a) "Low Rng" on 1, 2-RE-90-400 is selected instead of "Eff"; and (b) at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months associated instrument malfunction is verified not annunciated; and (c) a reading from "Low Rng" on 1, 2-RE-90-400 is obtained at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months during the release.

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SURVEILLANCE REQUIREMENTS*

(Page 1 of 2)

CHANNEL CHANNEL SOURCE CHANNEL OPERATIONAL INSTRUMENT CHECK CHECK CALIBRATION TEST

1. WASTE GAS DISPOSAL SYSTEM

a. Noble Gas Activity Monitor (0-RE-90-118) P P R(3) 3Q(1)

b. Pressure Measuring Device P N/A R N/A WGDT A 0-PIS-77-115 WGDT B 0-PIS-77-114 WGDT C 0-PIS-77-113 WGDT D 0-PIS-77-100 WGDT E 0-PIS-77-101 WGDT F 0-PIS-77-102 WGDT G 0-PIS-77-145 WGDT H 0-PIS-77-146 WGDT J 0-PIS-77-147

2. CONDENSER VACUUM EXHAUST SYSTEM

a. Noble Gas Activity Monitor (1,2-RE-90-119) D M R(3) 3Q(2,4)

b. Reserved for future use.

c. Effluent Flow Rate Measuring Device (1,2-FE-2-256) D N/A R N/A

d. Reserved for future use.

e. Iodine/Particulate Sample Line Heat Trace N/A N/A N/A Q

[SOURCE NOTE 13]

3. SHIELD BUILDING EXHAUST SYSTEM

a. Noble Gas Low Range Activity Monitor D M R(3) 3Q(2,4)

(1,2-RE-90-400A)

b. Iodine and Particulate Sampler (1,2-RE-90-402) N/A N/A N/A N/A

c. Effluent Flow Rate Measuring Device (1,2-FI-90-400) D N/A R Q

d. Sampler Flow Rate Measuring Device D N/A R Q (1,2-RE-90-400 - Monitor Item 028)

e. Iodine/Particulate Sample Line Heat Trace N/A N/A N/A Q

[SOURCE NOTE 13]

f. Tritium Flow Rate Measuring Device D N/A Y N/A (1,2-FIQ-90-801)

4. AUXILIARY BUILDING VENTILATION AND FUEL HANDLING AREA VENTILATION SYSTEM

a. Noble Gas Activity Monitor (0-RE-90-101B) D M R(3) 3Q(2)

b. Iodine and Particulate Sampler (0-RE-90-101) N/A N/A N/A N/A

c. Effluent Flow Rate Measuring Device D N/A R Q (0-FI-90-300/1B)

d. Sampler Flow Rate Measuring Device D N/A R Q (0-RE-90-101 - Monitor Item 028 or 0-RI-90-101 Sample Flow)

e. Tritium Flow Rate Measuring Device (FIQ-90-800) D N/A Y N/A

5. SERVICE BUILDING VENTILATION SYSTEM

a. Noble Gas Activity Monitor (0-RE-90-132) D M R(3) 3Q(2)

b. Effluent Flow Rate Measuring D N/A R Q System (0-FI-90-320/1B)

6. CONTAINMENT PURGE AND EXHAUST SYSTEM

a. Noble Gas Activity Monitors *** P ***(3) ***

(1,2-RE-90-130, 1,2-RE-90-131)

See Table 3.1 (FREQUENCY NOTATION) for the surveillance frequency definitions.

- - See WBN TS SR 3.3.6.1, SR 3.3.6.7, and SR 3.3.6.4 for these requirements.

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(Page 2 of 2)

TABLE NOTATION (1) The CHANNEL OPERATIONAL TEST shall also demonstrate that automatic isolation of this pathway and control room alarm annunciation occurs if any of the following conditions exists:

1. Instrument indicates measured levels above the alarm/trip setpoint, or

2. Indication of downscale failure, or

3. Instrumentation controls not set in operate mode.

(2) The CHANNEL OPERATIONAL TEST shall also demonstrate that control room alarm annunciation occurs if any of the following conditions exists:

1. Instrument indicates measured levels above the alarm setpoint, or

2. Indication of downscale failure, or

3. Instrumentation controls not set in operate mode.

(3) The initial CHANNEL CALIBRATION shall be performed using one or more of the reference standards certified by the National Institute of Standards and Technology (NIST) or using standards that have been obtained from suppliers that are traceable via measurement assurance activities with NIST. These standards shall permit calibrating the system over its intended range of energy and measurement range. For subsequent CHANNEL CALIBRATION, NIST traceable standards or sources that have been related to the initial calibration (transfer calibration sources) shall be used.

(4) The CHANNEL OPERATIONAL TEST for Unit 2 monitors will be on a Quarterly (Q) basis.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 21 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.1 INSTRUMENTATION 1/2.1.3 METEOROLOGICAL INSTRUMENTATION/DATA CONTROLS 1.1.3 The meteorological monitoring instrumentation channels shown in Table 1.1-3 shall be OPERABLE.

APPLICABILITY: At all times.

ACTION:

With one or more required meteorological monitoring channels inoperable for more than 7 days, prepare and submit a Special Report to the NRC, pursuant to ODCM Administrative Control 5.4, within the next 10 days outlining the cause of the malfunction and the plans for restoring the channel(s) to OPERABLE status.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.1.3 Each of the above meteorological instrumentation channels shall be demonstrated OPERABLE by the performance of the CHANNEL CHECK at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months and the CHANNEL CALIBRATION at least once per 184 days.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 22 of 205 Table 1.1 METEOROLOGICAL MONITORING INSTRUMENTATION Minimum Instrument Location OPERABLE

1. WIND SPEED Channel 1 Nominal Height 10 m Channel 2 Nominal Height 46 m 2 of 3 Channel 3 Nominal Height 91 m

2. WIND DIRECTION Channel 1 Nominal Height 10 m Channel 2 Nominal Height 46 m 2 of 3 Channel 3 Nominal Height 91 m

3. AIR TEMPERATURE - DELTA T Channel 1 Nominal Height 10 m to 46 m Channel 2 Nominal Height 10 m to 91 m 1 of 3 Channel 3 Nominal Height 46 m to 91 m WBL-23-19 E2-24 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 23 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.1 LIQUID EFFLUENTS 1/2.2.1.1 CONCENTRATION CONTROLS 1.2.1.1 In accordance with WBN TS 5.7.2.7.b and c, the concentration of radioactive material released in liquid effluents to UNRESTRICTED AREAS (see Figure 3.1) shall be limited to 10 times the concentration values specified in Appendix B, Table 2, Column 2 to 10 CFR 20.1001-20.2402 for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2x10-4 µCi/ml total activity.

APPLICABILITY: At all times.

ACTION:

With the concentration of radioactive material released in liquid effluents exceeding the above limits, immediately restore the concentration to within the above limits.

The provisions of SR 2.0.4 are not applicable. Report all deviations in the Annual Radioactive Effluent Release Report.

SURVEILLANCE REQUIREMENTS 2.2.1.1.1 Radioactive liquid wastes shall be sampled and analyzed according to the sampling and analysis program of Table 2.2-1.

2.2.1.1.2 The results of the radioactivity analysis shall be used in accordance with the methodology and parameters in ODCM Section 6.1 to assure that the concentrations at the point of release are maintained within the limits of Control 1.2.1.1.

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(Page 1 of 3)

Minimum Minimum Lower Limit of Sampling Analysis Type of Activity Detection Liquid Release Type Frequency Frequency Analysis (LLD)1 (µCi/ml)

Batch Release Tanks2 P P Principal Gamma A. Radwaste System Tanks Each Batch Each Batch Waste Condensate A, B, & C Emitters3 5x10-7 Cask Decontamination I-131 1x10-6 Chemical Drain P M Monitor One Dissolved/

Entrained Noble Gases Laundry and Hot Shower A&B Batch/M (Gamma Emitters) 1x10-5 Tritiated Water Storage B. Condensate Demineralizer P M System Tanks 6 Each Lab H-3 1x10-5 Waste Neutralization Batch Composite4 Gross Alpha 1x10-7 Non-Reclaimable Waste P Q High Crud A&B Each Lab Sr-89, Sr-90 5x10-8 Batch Composite4 Fe-55 1x10-6 Continuous Releases5 D D Principal Gamma Grab Each Grab Emitters3 5x10-7 C. Steam Generator Blowdown6 Sample Sample I-131 1x10-6 D. Turbine Building Sump6 M M Dissolved/

Grab Entrained Noble Gases Sample (Gamma Emitters) 1x10-5 D M H-3 1x10-5 Grab Lab Sample Composite4 Gross Alpha 1x10-7 D Q Sr-89, Sr-90 5x10-8 Grab Lab Sample Composite4 Fe-55 1x10-6 E. Groundwater Sump M M Principal Gamma Grab Each Grab Emitters3 5x10-7 Sample Sample I-131 1x10-6 Dissolved/

Entrained Noble Gases (Gamma Emitters) 1x10-5 H-3 1x10-5 Q Q Grab Grab Sr-89, Sr-90 5x10-8 Sample Sample

See Table 3.1 (FREQUENCY NOTATION) for the surveillance frequency definitions.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 25 of 205 Table 2.2 RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM (Page 2 of 3)

TABLE NOTATION 1 The LLD is defined for the purpose of these Controls as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be detected with 95% probability with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. (Reference 8)

For a particular measurement system (which may include radiochemical separation):

4.66s b LLD =

E V 2.22E6 Y exp(t )

where:

LLD = the "a priori" lower limit of detection (microcurie per unit mass or volume).

sb = the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (counts per minute).

E = the counting efficiency (counts per disintegration).

V = the sample size (units of mass or volume).

2.22x106 = the number of disintegrations per minute per microcurie.

Y = the fractional radiochemical yield, when applicable.

= the radioactive decay constant for the particular radionuclide (s-1), and Dt = the elapsed time between midpoint of sample collection and time of counting (s). The definition of Dt applies only to the calculation of the LLD. A more rigorous treatment of the buildup and decay during the sample collection and/or counting interval(s) may be applied to actual sample analysis if desired.

It should be recognized that the LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system and not an a posteriori (after the fact) limit for a particular measurement.

Typical values of E, V, Y, and t should be used in the calculation.

2 A batch release is the discharge of liquid wastes of a discrete volume. Prior to sampling for analyses, each batch shall be isolated and then thoroughly mixed by the method described in appropriate plant procedures to assure representative sampling.

3 The principal gamma emitters for which the LLD Control applies exclusively are the following radionuclides: Mn-54, Fe-59, Co-58, Co-60, Zn-65, Mo-99, Cs-134, Cs-137, Ce-141. Ce-144 shall also be measured, but with an LLD of 5x10-6 µCi/ml. This list does not mean that only these nuclides are to be considered. Other gamma peaks which are identifiable, together with those of the above nuclides, shall also be analyzed and reported in the Annual Radioactive Effluent Release Report pursuant to ODCM Administrative Control 5.2, in the format outlined in Regulatory Guide 1.21, Appendix B, Revision 1, June 1974.

4 A laboratory composite sample is one prepared by combining representative samples from each release into one well-mixed, homogeneous sample. The volume of sample added to the composite from each release shall be proportional to the release volume. The composite sample shall be preserved according to plant procedures as appropriate.

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TABLE NOTATION 5 A continuous release is the discharge of liquid wastes of a nondiscrete volume; e.g., from a system that has an input flow during the continuous release.

6 Not applicable when most recent Secondary Coolant System activity determination (principal gamma emitters) is less than or equal to 1x10-6 µCi/g and either of the following conditions exist: (1) the discharge radiation monitor setpoint is less than or equal to 2 times background or (2) compensatory requirements associated with applicable inoperable monitors are met.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 27 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.1 LIQUID EFFLUENTS 1/2.2.1.2 DOSE CONTROLS 1.2.1.2 In accordance with WBN TS 5.7.2.7.d and e, the dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluents discharged from each unit to UNRESTRICTED AREAS (see Figure 3.1) shall be limited:

a. During any calendar quarter to less than or equal to 1.5 mrem to the total body and to less than or equal to 5 mrem to any organ, and

b. During any calendar year to less than or equal to 3 mrem to the total body and to less than or equal to 10 mrem to any organ.

APPLICABILITY: At all times.

ACTION:

With the calculated dose from the release of radioactive materials in liquid effluents exceeding any of the above limits, prepare and submit to the NRC within 30 days, pursuant to ODCM Administrative Control 5.4, a Special Report that identifies the cause(s) for exceeding the limit(s) and defines the corrective actions that have been taken to reduce the releases and the proposed corrective actions to be taken to assure that subsequent releases will be in compliance with the above limits. This Special Report shall also include: (1) the results of radiological analyses of drinking water sources and (2) the radiological impact on finished drinking water supplies with regard to the requirements of 40 CFR 141, Safe Drinking Water Act, (applicable only if drinking water supply is taken from the receiving water body within three miles downstream of the plant discharge).

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.2.1.2 Cumulative dose contributions from liquid effluents for the current calendar quarter and current calendar year shall be determined in accordance with the methodology and parameters in ODCM Section 6.3 at least once per 31 days.

[SOURCE NOTE 5]

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 28 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.1 LIQUID EFFLUENTS 1/2.2.1.3 LIQUID RADWASTE TREATMENT SYSTEM CONTROLS 1.2.1.3 In accordance with WBN TS 5.7.2.7.f, the Liquid Radwaste Treatment System (LRTS) shall be OPERABLE and appropriate portions of the system shall be used to reduce the radioactive materials in liquid wastes prior to their discharge when the projected doses due to the liquid effluent from each unit to UNRESTRICTED AREAS (see Figure 3.1) would exceed 0.06 mrem to the total body or 0.2 mrem to any organ in a 31-day period.

APPLICABILITY: At all times.

ACTION:

With radioactive liquid waste being discharged without treatment and in excess of the above limits and any portion of the LRTS not in operation, prepare and submit to the NRC within 30 days, pursuant to ODCM Administrative Control 5.4, a Special Report which includes the following information:

1. Explanation of why liquid waste was being discharged without treatment, identification of the inoperable equipment or subsystems, and the reason for the inoperability,

2. Action(s) taken to restore the inoperable equipment to OPERABLE status, and

3. Summary description of action(s) taken to prevent a recurrence.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.2.1.3.1 Doses due to liquid releases from each unit to UNRESTRICTED AREAS shall be projected at least once per 31 days, in accordance with the methodology and parameters in ODCM Section 6.5 when the LRTS are not being fully utilized.

[SOURCE NOTE 9]

2.2.1.3.2 The installed LRTS shall be considered OPERABLE by meeting ODCM Controls 1.2.1.1 and 1.2.1.2.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 29 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.2 GASEOUS EFFLUENTS 1/2.2.2.1 DOSE RATE CONTROLS 1.2.2.1 In accordance with WBN TS 5.7.2.7.g, the dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the UNRESTRICTED AREA BOUNDARY (see Figure 3.1) shall be limited to the following:

a. For noble gases: Less than or equal to a dose rate of 500 mrem/y to the total body and less than or equal to a dose rate of 3000 mrem/y to the skin, and

b. For Iodine-131, Iodine-133, tritium, and for all radionuclides in particulate form with half-lives greater than 8 days: Less than or equal to a dose rate of 1500 mrem/y to any organ.

APPLICABILITY: At all times.

ACTION:

With dose rate(s) exceeding the above limits, immediately restore the release rate to within the above limit(s).

The provisions of SR 2.0.4 are not applicable. Report all deviations in the Annual Radioactive Effluent Release Report.

SURVEILLANCE REQUIREMENTS 2.2.2.1.1 The dose rate due to noble gases in gaseous effluents shall be determined to be within the above limits in accordance with the methodology and parameters in ODCM Section 7.2.2 by obtaining representative samples and performing analyses in accordance with the sampling and analysis program specified in Table 2.2-2.

[SOURCE NOTE 7]

2.2.2.1.2 The dose rate due to Iodine-131, Iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents shall be determined to be within the above limits in accordance with the methodology and parameters in ODCM Section 7.2.3 by obtaining representative samples and performing analyses in accordance with the sampling and analysis program specified in Table 2.2-2.

[SOURCE NOTE 7,1]

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(Page 1 of 3)

Gaseous Release Type Minimum Analysis Type of Activity Lower Limit of Sampling Frequency Analysis Detection Frequency (LLD) (µCi/ml)1 A. Waste Gas P P Noble Gases2 1x10-4 Decay Tank Each Tank Each (Gamma Emitters)

Grab Sample Tank H-3 (oxide) 1x10-6 B. Containment P8 P Noble Gases2 PURGE3 Each PURGE Each (Gamma Emitters) 1x10-4 Grab Sample Purge C. Incore Instrument Each Each Noble Gases2 1x10-4 Room PURGE3 PURGE9 Purge (Gamma Emitters)

Grab Sample D. Reserved for future use.

E. Auxiliary Building Exh.3,10 M M Noble Gases2 1x10-4 F. Condenser Vacuum Exh.11 Grab Sample (Gamma Emitters)

G. Service Building Exh.

H. Reserved for future use.

I. Reserved for future use.

J. Reserved for future use.

K. Auxiliary Building Exh. Continuous6 W H-3 (oxide) 1x10-6 L. Shield Building Exh. Tritium M. Condenser Vacuum Exh.11,12 Sample Continuous6 I-131 W7 1x10-12 Charcoal I-133 Sample 1x10-10 Continuous6 Principal Gamma W7 1x10-11 Particulate Emitters2 Sample Continuous6 M Gross Alpha 1x10-11 Composite Particulate Sample Q Sr-89, Sr-90 1x10-11

See Table 3.1 (FREQUENCY NOTATION) for the surveillance frequency definitions.

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TABLE NOTATION 1 The LLD is defined in Note 1 of Table 2.2-1.

2 The principal gamma emitters for which the LLD Control applies include the following radionuclides:

Kr-87, Kr-88, Xe-133, Xe-133m, Xe-135, and Xe-138 in noble gas releases and Mn-54, Fe-59, I-131, Co-58, Co-60, Zn-65, Mo-99, Cs-134, Cs-137, Ce-141 and Ce-144 in Iodine and particulate releases.

This list does not mean that only these nuclides are to be considered. Other gamma peaks that are identifiable, together with the above nuclides, shall also be analyzed and reported in the Annual Radioactive Effluent Release Report pursuant to ODCM Administrative Control 5.2, in the format outlined in Regulatory Guide 1.21, Appendix B, Revision 1, June 1974.

3 Sampling and analysis for containment purges, incore instrument room purges, and the Auxiliary Building Exhaust shall also be performed following shutdown, startup, or a thermal power change exceeding 15% of RATED THERMAL POWER within a 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months period unless (a) analysis shows that the DOSE EQUIVALENT I-131 concentration in the reactor coolant has not increased more than a factor of 3 and (b) the containment noble gas activity monitor (0-RE-90-106 or 0-RE-90-112) or latest grab sample obtained as compensatory requirement associated with applicable inoperable monitor shows that the radioactivity has not increased by more than a factor of 3.

4 Reserved for future use.

5 Reserved for future use.

6 The ratio of the sample flow rate to the sampled stream flow rate shall be known for the time period covered by each dose or dose rate calculation made in accordance with ODCM Controls 1.2.2.1, 1.2.2.2, and 1.2.2.3.

7 Samples shall be changed at least once per 7 days. Analyses shall be completed within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months after changing, or after removal from sampler for those release points that had a discharge during the sampling period. Sampling shall also be performed at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for at least 7 days following each shutdown, startup, or THERMAL POWER change exceeding 15% of RATED THERMAL POWER within a one hour period for those release points that had a discharge during the sampling period. Analyses of samples shall be completed within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months of changing. When samples collected for 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are analyzed, the corresponding LLDs may be increased by a factor of 10. This daily sampling and analysis requirement does not apply if: (1) analysis shows that the DOSE EQUIVALENT I-131 concentration in the reactor coolant has not increased by more than a factor of 3; and (2) the containment noble gas monitor aligned to lower containment (1,2-RE-90-106 or 1,2-RE-90-112) or latest grab sample obtained as compensatory requirement associated with applicable inoperable monitor shows that the radioactivity has not increased by more than a factor of 3.

8 In all MODES, the compartment(s) of the containment to be purged shall be sampled for noble gas prior to PURGING.

9 The incore instrument room PURGE sample shall be obtained at the shield building monitor between 5 and 20 minutes following initiation of the incore instrument room PURGE.

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TABLE NOTATION 10 Applicable in MODES 1, 2, 3, and 4, the containment will be VENTED to the containment annulus and then to the auxiliary building via containment annulus fans. The lower containment noble gas monitor (1,2-RE-90-106 or -112) response will be recorded daily when VENTING is occurring to monitor the radioactivity being discharged. The Auxiliary Building Exhaust will be re-sampled when the reading on the lower containment radiation monitor (1,2-RE-90-106 or -112) increases by 50% from the initial value. If the lower containment noble gas monitor (1,2-RE-90-106 or -112) is inoperable, noble gas grab samples may be used to perform this comparison.

11 Not applicable when the most recent Secondary Coolant System radioactivity determination (principal gamma emitters) is less than or equal to 1x10-6 µCi/g and either of the following conditions exist:

(1) the discharge radiation monitor setpoint is less than or equal to 2 times background or (2) compensatory requirements associated with applicable inoperable monitors are met.

12 Continuous tritium sample collection not applicable.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 33 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.2 GASEOUS EFFLUENTS 1/2.2.2.2 DOSE - NOBLE GASES CONTROLS 1.2.2.2 In accordance with WBN TS 5.7.2.7.h, the air dose due to noble gases released in gaseous effluents from each unit to areas at and beyond the UNRESTRICTED AREA BOUNDARY (see Figure 3.1) shall be limited to the following:

a. During any calendar quarter: Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation, and

b. During any calendar year: Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation.

APPLICABILITY: At all times.

ACTION:

With the calculated air dose from radioactive noble gases in gaseous effluents exceeding any of the above limits, prepare and submit to the NRC within 30 days, pursuant to ODCM Administrative Control 5.4, a Special Report that identifies the cause(s) for exceeding the limit(s) and defines the corrective actions that have been taken to reduce the releases and the proposed corrective actions to be taken to assure that subsequent releases will be in compliance with the above limits.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.2.2.2 Cumulative dose contributions for the current calendar quarter and current calendar year for noble gases shall be determined in accordance with the methodology and parameters in ODCM Section 7.3 at least once per 31 days.

[SOURCE NOTE 5]

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 34 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.2 GASEOUS EFFLUENTS 1/2.2.2.3 DOSE - I-131, I-133, C-14, TRITIUM, AND RADIONUCLIDES IN PARTICULATE FORM WITH HALF-LIVES GREATER THAN EIGHT DAYS CONTROLS 1.2.2.3 In accordance with WBN TS 5.7.2.7.i, the dose to a MEMBER OF THE PUBLIC from I-131, I-133, C-14, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released from each unit to areas at and beyond the UNRESTRICTED AREA BOUNDARY (see Figure 3.1) shall be limited to the following:

a. During any calendar quarter: Less than or equal to 7.5 mrem to any organ and,

b. During any calendar year: Less than or equal to 15 mrem to any organ.

APPLICABILITY: At all times.

ACTION:

With the calculated dose from the release of I-131, I-133, C-14, tritium, and all radionuclides in particulate form with half-lives greater than 8 days, in gaseous effluents exceeding any of the above limits, prepare and submit to the NRC within 30 days, pursuant to ODCM Administrative Control 5.4, a Special Report which identifies the cause(s) for exceeding the limit(s) and defines the corrective actions that have been taken to reduce the releases and the proposed corrective actions to be taken to assure that subsequent releases will be in compliance with the above limits.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.2.2.3 Cumulative dose contributions for the current calendar quarter and current calendar year for I-131, I-133, C-14, tritium, and all radionuclides in particulate form with half-lives greater than 8 days shall be determined in accordance with the methodology and parameters in ODCM Section 7.4 at least once per 31 days.

[SOURCE NOTE 5]

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 35 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.2 GASEOUS EFFLUENTS 1/2.2.2.4 GASEOUS RADWASTE TREATMENT CONTROLS 1.2.2.4 In accordance with WBN TS 5.7.2.7.f, the VENTILATION EXHAUST TREATMENT SYSTEM and the WASTE GAS HOLDUP SYSTEM shall be OPERABLE and appropriate portions of these systems shall be used to reduce releases of radioactivity when the projected doses in 31 days due to gaseous effluent releases from each unit to areas at and beyond the UNRESTRICTED AREA BOUNDARY (See Figure 3.1) would exceed:

a. 0.2 mrad to air from gamma radiation, or

b. 0.4 mrad to air from beta radiation, or

c. 0.3 mrem to any organ of a MEMBER OF THE PUBLIC.

APPLICABILITY: At all times.

ACTION:

With the radioactive gaseous waste being discharged without treatment and in excess of the above limits, prepare and submit to the NRC within 30 days, pursuant to ODCM Administrative Control 5.4, a Special Report that includes the following information:

1. Identification of the inoperable equipment or subsystems and the reason for inoperability.

2. Action(s) taken to restore the inoperable equipment to OPERABLE status, and

3. Summary description of action(s) taken to prevent a recurrence.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.2.2.4.1 Doses due to gaseous releases from each unit to areas at and beyond the UNRESTRICTED AREA BOUNDARY shall be projected at least once per 31 days, in accordance with the methodology and parameters in ODCM Section 7.5 when the VENTILATION EXHAUST TREATMENT SYSTEMS and WASTE GAS HOLDUP SYSTEMS are not being fully utilized.

[SOURCE NOTE 9]

2.2.2.4.2 The installed VENTILATION EXHAUST TREATMENT SYSTEMS and WASTE GAS HOLDUP SYSTEM shall be considered OPERABLE by meeting the requirements in ODCM Controls 1.2.2.1, 1.2.2.2, and 1.2.2.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 36 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.3 TOTAL DOSE CONTROLS 1.2.3 In accordance with WBN TS 5.7.2.7.j, the annual (calendar year) dose or dose commitment to any MEMBER OF THE PUBLIC, due to releases of radioactivity and to direct radiation from uranium fuel cycle sources, shall be limited to less than or equal to 25 mrem to the total body or any organ, except the thyroid, which shall be limited to less than or equal to 75 mrem.

APPLICABILITY: At all times.

ACTION:

a. With the calculated doses from the release of radioactive materials in liquid or gaseous effluents exceeding twice the limits of ODCM Control 1.2.1.2, 1.2.2.2, or 1.2.2.3, calculations shall be made in accordance with ODCM Section 8.1 including direct radiation contributions from the reactor units and from outside storage tanks to determine whether the above limits have been exceeded. If such is the case, prepare and submit to the NRC within 30 days, pursuant to ODCM Administrative Control 5.4, a Special Report that defines the corrective action to be taken to reduce subsequent releases to prevent recurrence of exceeding the above limits and includes the schedule for achieving conformance with the above limits. This Special Report, as defined in 10 CFR 20.2203(a)(4), shall include an analysis that estimates the radiation exposure (dose) to a MEMBER OF THE PUBLIC from uranium fuel cycle sources, including all effluent pathways and direct radiation, for the calendar year that includes the release(s) covered by this report. It shall also describe levels of radiation and concentrations of radioactive materials involved, and the cause of the exposure levels or concentrations. If the estimated dose(s) exceeds the above limits, and if the release condition resulting in violation of 40 CFR 190 has not already been corrected, the Special Report shall include a request for a variance in accordance with the provisions of 40 CFR 190. Submittal of the report is considered a timely request, and a variance is granted until the staff action on the request is complete.

b. With the estimated doses exceeding the 40 CFR 190 dose limits, a separate determination must be made, in accordance with the requirements of 40 CFR 302.5, regarding the reportable quantities for radionuclide releases given in 40 CFR 302.4. Any required notifications will be made in accordance with ODCM Administrative Control 5.5.

c. The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.2.3.1 Cumulative dose contributions from liquid and gaseous effluents shall be determined in accordance with ODCM Surveillance Requirements 2.2.1.2, 2.2.2.2, and 2.2.2.3 and in accordance with the methodology and parameters in ODCM Sections 6.3, 7.3, and 7.4.

2.2.3.2 Cumulative dose contributions from direct radiation from the units and from radwaste storage tanks shall be obtained from the REMP described in ODCM Section 9.1. This requirement is applicable only under conditions set forth in the action above.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 37 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.3 RADIOLOGICAL ENVIRONMENTAL MONITORING 1/2.3.1 MONITORING PROGRAM CONTROLS 1.3.1 As required by 10 CFR Part 50, Appendix I, Section IV.B, the Radiological Environmental Monitoring Program (REMP) shall be conducted as specified in Table 2.3-1.

APPLICABILITY: At all times.

ACTION:

a. With the REMP not being conducted as specified in Table 2.3-1, prepare and submit to the NRC, in the Annual Radiological Environmental Operating Report described in ODCM Administrative Control 5.1, a description of the reasons for not conducting the program as required and the plan for preventing a recurrence.

b. With the level of radioactivity as a result of plant effluents in an environmental sampling medium at a specified location exceeding the reporting levels of Table 2.3-2, when averaged over any calendar quarter, prepare and submit to the NRC within 30 days from the end of the affected quarter, pursuant to ODCM Administrative Control 5.4, a Special Report that identifies the cause(s) for exceeding the limit(s) and defines the corrective actions to be taken to reduce radioactive effluents so that the potential annual dose* to a MEMBER OF THE PUBLIC is less than the calendar year limits of ODCM Controls 1.2.1.2, 1.2.2.2 and 1.2.2.3. When more than one of the radionuclides in Table 2.3-2 are detected in the sampling medium, this report shall be submitted if:

concentration (i) concentration (i + 1)

+ + ... 1 lim it level (i) lim it level(i + 1)

When radionuclides other than those in Table 2.3-2 are detected and are the result of plant effluents, this report shall be submitted if the potential annual dose* to a MEMBER OF THE PUBLIC from all radionuclides is equal to or greater than the calendar year limits of ODCM Controls 1.2.1.2, 1.2.2.2, and 1.2.2.3. This report is not required if the measured level of radioactivity was not the result of plant effluents; however, in such an event, the condition shall be reported and described in the Annual Radiological Environmental Operating Report described in ODCM Administrative Control 5.1.

The methodology and parameters used to determine the potential annual dose to a MEMBER OF THE PUBLIC shall be indicated in this report.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 38 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.3 RADIOLOGICAL ENVIRONMENTAL MONITORING 1/2.3.1 MONITORING PROGRAM ACTION (CONTINUED):

c. With milk or fresh leafy vegetation samples unavailable from one or more of the sample locations required by Table 2.3-1, identify specific locations for obtaining replacement samples and add them within 30 days to the REMP described in ODCM Section 9.0 (excluding short term or temporary unavailability). The specified locations from which samples were unavailable may then be deleted from the monitoring program.

Pursuant to ODCM Administrative Controls 5.2 and 5.3, submit in the next Effluent Release Report documentation for a change in the ODCM, with supporting information identifying the cause of the unavailability of samples and justifying the selection of the new location(s) for obtaining samples.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.3.1 The radiological environmental monitoring samples shall be collected pursuant to Table 2.3-1 from the specific locations given in the tables and figures in ODCM Section 9.0 and shall be analyzed pursuant to the requirements of Table 2.3-1 and the detection capabilities required by Table 2.3-3 and 2.3-4.

[SOURCE NOTE 6]

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 39 of 205 Table 2.3 MINIMUM REQUIRED RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 1 of 5)

Exposure Pathway and/or Number of Samples and Sampling and Type and Frequency of Sample Sample Locations1 Collection Frequency Analyses

1. DIRECT RADIATION Forty routine monitoring Quarterly Gamma dose stations either with two or quarterly more dosimeters or with one instrument for measuring and recording dose rate continuously, placed as follows:

An inner ring of stations, one in each meteorological sector in the general area of the UNRESTRICTED AREA BOUNDARY; and An outer ring of stations, one in each meteorological sector in the 6- to 8-km range from the site; and The balance of the stations to be placed in special interest areas such as population centers, nearby residences, schools, and in one or two areas to serve as control stations.

2. AIRBORNE Radioiodine Samples from five locations: Continuous sampler Radioiodine canister:

and Three samples from close to operation with I-131 analysis weekly Particulates the three UNRESTRICTED sample collection AREA BOUNDARY locations weekly, or more Particulate sampler:

in different sectors of the frequently if required Gross beta highest calculated annual by dust loading. radioactivity analysis average ground-level D/Q; following filter One sample from the vicinity change4 and gamma of a community having the isotopic analysis5 of highest calculated annual composite (by average ground level D/Q; location quarterly) and One sample from a control location, as for example 15 -

30 km distant and in the least prevalent wind direction3 WBL-23-19 E2-41 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 40 of 205 Table 2.3 MINIMUM REQUIRED RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 2 of 5)

Exposure Pathway and/or Number of Samples and Sampling and Type and Frequency of Sample Sample Locations 1 Collection Frequency Analyses

3. WATERBORNE Surface 6

One sample upstream. Composite sample Gamma isotopic One sample downstream. over a 1-month analysis5 monthly; period.7 composite for tritium analysis quarterly.

Ground Samples from one or two At least once per 92 Gamma isotopic5 and sources only if likely to be days tritium analysis affected 8 quarterly.

Drinking One sample of each of one to Composite sample Gross beta and three of the nearest water over a one month gamma isotopic supplies that could be period.7 analyses5 monthly.

affected by the discharge9 Composite for tritium analysis quarterly.

Shoreline One Sample from Semiannually Gamma isotopic5 Sediment downstream area with analysis semiannually existing or potential recreational value Holding Samples from at least three Annually Gamma isotopic Pond locations in the Yard Holding analysis5 annually Sediment Pond

4. INGESTION Milk Samples from milking Semimonthly when Gamma isotopic5 and animals in three locations animals are on I-131 analysis semi-within 5 km distance having pasture; monthly at monthly when animals the highest dose potential. If other times. are on pasture; there are none, then one monthly at other times.

additional sample from milking animals in each of one to three areas between 5 to 8 km distant where doses are calculated to be greater than 1 mrem/yr10 One sample from milking animals at a control location 15-30 km distant and in the least prevalent wind direction.3 WBL-23-19 E2-42 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 41 of 205 Table 2.3-1 MINIMUM REQUIRED RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 3 of 5)

Exposure Pathway and/or Number of Samples and Sampling and Type and Frequency of Sample Sample Locations1 Collection Frequency Analyses INGESTION (continued)

Fish One sample of commercially Sample in season, Gamma isotopic important species and one or semiannually if analysis5 on edible sample of recreationally they are not portions.

important species in vicinity seasonal of plant discharge area and the Chickamagua Reservoir.

One sample of same species in areas not influenced by plant discharge.

Food One sample of each principal At time of harvest11 Gamma isotopic Products class of food products from analysis5 on edible any area within 5 miles of the portion.

plant that is irrigated by water in which liquid plant wastes have been discharged.

Samples of three different kinds of available broad leaf vegetation grown nearest each of two different offsite locations of highest predicted annual average ground-level D/Q if milk sampling is not performed as outlined in 4.a.

above.

One sample of each of the similar broad leaf vegetation grown 15-30 km distant in the least prevalent wind direction if milk sampling is not performed as outlined in 4.a.

above.3 WBL-23-19 E2-43 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 42 of 205 Table 2.3 MINIMUM REQUIRED RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 4 of 5)

TABLE NOTATION 1

Specific parameters of distance and direction sector from the centerline of the Unit 1 Shield Building stack, and additional description where pertinent, shall be provided for each and every sample location in Table 2.3-1 in a table(s) and figure(s) in ODCM Section 9.0. Refer to NUREG-1301, "Offsite Dose Calculation Manual Guidance: Standard Effluent Controls for Pressurized Water Reactors, Generic Letter 89-01, Supplement 1," April 1991. Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment and other legitimate reasons. If specimens are unobtainable due to sampling equipment malfunction, every effort shall be made to complete corrective action prior to the end of the next sampling period. All deviations from the sampling schedule shall be documented in the Annual Radiological Environmental Operating Report pursuant to ODCM Administrative Control 5.1. It is recognized that, at times, it may not be possible or practicable to continue to obtain samples of the media of choice at the most desired location or time. In these instances suitable specific alternative media and locations may be chosen for the particular pathway in question and appropriate substitutions made within 30 days in the Radiological Environmental Monitoring Program given in ODCM Section 9.0. Pursuant to ODCM Administrative Controls 5.2 and 5.3, submit in the next Annual Radioactive Effluent Release Report documentation for a change in ODCM Section 9.0, including a revised figure(s) and table reflecting the new location(s) with supporting information identifying the cause of the unavailability of samples for that pathway and justifying the selection of the new location(s) for obtaining samples.

2 Reserved for future use.

3 The purpose of this sample is to obtain background information. If it is not practical to establish control locations in accordance with the distance and wind direction criteria, other sites that provide valid background data may be substituted.

4 Airborne particulate sample filters shall be analyzed for gross beta radioactivity 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or more after sampling to allow for radon and thoron daughter decay. If gross beta activity in air particulate samples is greater than 10 times that of control samples, gamma isotopic analysis shall be performed on the individual samples.

5 Gamma isotopic analysis means the identification and quantification of gamma-emitting radionuclides that may be attributable to the effluents from the WBN plant.

6 The "upstream sample" shall be taken at a distance beyond significant influence of the discharge. The "downstream sample" shall be taken in an area beyond but near the mixing zone.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 43 of 205 Table 2.3 MINIMUM REQUIRED RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 5 of 5)

TABLE NOTATION 7

A composite sample is one in which the quantity (aliquot) of liquid sampled is proportional to the quantity of flowing liquid and in which the method of sampling employed results in a specimen that is representative of the liquid flow. In this program composite sample aliquots shall be collected at time intervals that are very short (e.g., hourly) relative to the compositing period (e.g., monthly) in order to assure obtaining a representative sample. The composite sample shall be preserved according to plant procedures as appropriate.

8 Groundwater samples shall be taken when this source is tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties are suitable for contamination. Groundwater flow in the area of WBN has been shown to be toward Chickamauga Reservoir (Reference 9). There are no sources tapped for drinking or irrigation purposes between the plant and the reservoir.

Therefore, sampling of the medium is not required. However, sampling is being performed as specified in Table 9.1.

9 The surface water control shall be considered a control for the drinking water samples.

10 The dose shall be calculated for the maximum organ and age group, using the methodology and parameters in ODCM Section 7.4.

11 If harvest occurs more than once a year, sampling shall be performed during each discrete harvest. If harvest occurs continuously, sampling shall be monthly. Attention shall be paid to including samples of tuberous and root food products.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 44 of 205 Table 2.3 REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES Airborne Food Water Particulate or Fish Products Analysis (pCi/L)3 gases (pCi/m3)5 (pCi/Kg, wet)4 Milk (pCi/L)3 (pCi/Kg, wet)4 H-3 20,000 N/A N/A N/A N/A Mn-54 1,000 N/A 30,000 N/A N/A Fe-59 400 N/A 10,000 N/A N/A Co-58 1,000 N/A 30,000 N/A N/A Co-60 300 N/A 10,000 N/A N/A Zn-65 300 N/A 20,000 N/A N/A Zr-Nb-95 400 N/A N/A N/A N/A I-131 22 0.9 N/A 3 100 Cs-134 30 10 1,000 60 1,000 Cs-137 50 20 2,000 70 2,000 Ba-La-140 200 N/A N/A 300 N/A 1 Reserved for future use.

2 For drinking water samples. If no drinking water pathway exists, value of 20 pCi/L may be used.

3 Multiply the values in this column by 10-9 to convert to units of µCi/ml.

4 Multiply the values in this column by 10-9 to convert to units of µCi/g (wet).

5 Multiply the values in this column by 10-12 to convert to units of µCi/cc.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 45 of 205 Table 2.3 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS1,2 - LOWER LIMITS OF DETECTION (LLD)3 (Page 1 of 2)

Airborne Particulate Food Water or Gases Fish (pCi/Kg, Milk Products Sediment Analysis (pCi/L)6 (pCi/m3)8 wet)7 (pCi/L)6 (pCi/Kg, wet)7 (pCi/Kg, dry)7 gross beta 4 0.01 N/A N/A N/A N/A H-3 20004 N/A N/A N/A N/A N/A Mn-54 15 N/A 130 N/A N/A N/A Fe-59 30 N/A 260 N/A N/A N/A Co-58, 60 15 N/A 130 N/A N/A N/A Zn-65 30 N/A 260 N/A N/A N/A Zr-95 30 N/A N/A N/A N/A N/A Nb-95 15 N/A N/A N/A N/A N/A I-131 15 0.07 N/A 1 60 N/A Cs-134 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Ba-140 60 N/A N/A 60 N/A N/A La-140 15 N/A N/A 15 N/A N/A TABLE NOTATION 1

This list does not mean that only these nuclides are to be considered. Other nuclides that are identifiable, together with those of the above nuclides, shall also be analyzed and reported in the Annual Radiological Environmental Operating Report pursuant to Administrative Control 5.1.

2 Required detection capabilities for DOSIMETERs used for environmental measurements shall be in accordance with the recommendations of Regulatory Guide 4.13.

3 The LLD is defined, for the purpose of these specifications, as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be detected with 95% probability with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. (Reference 8)

For a particular measurement system (which may include radiochemical separation):

4.66 s b LLD =

E V 2.22 Y exp(- t )

Where:

LLD = the "a priori" lower limit of detection (pCi per unit mass or volume) sb = the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (counts per minute)

E = the counting efficiency (counts per disintegration)

V = the sample size (units of mass or volume) 2.22 = the number of disintegrations per minute per picocurie WBL-23-19 E2-47 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 46 of 205 Table 2.3 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS1,2- LOWER LIMITS OF DETECTION (LLD)3 (Page 2 of 2)

Y = the fractional radiochemical yield, when applicable

= the radioactive decay constant for the particular radionuclide (s-1) t = the elapsed time between midpoint of environmental sample collection and time of counting (s).

Typical values of E, V, Y, and t should be used in the calculation.

It should be recognized that the LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system and not an a posteriori (after the fact) limit for a particular measurement. Analysis will be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations, unavoidable small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these LLDs unachievable. In such cases, the contributing factors shall be identified and described in the Annual Radiological Environmental Operating Report pursuant to ODCM Administrative Control 5.2.

4 If no drinking water pathway exists, a value of 3,000 pCi/L may be used.

5 If no drinking water pathway exists, a value of 15 pCi/L may be used.

6 Multiply the values in this column by 10-9 to convert to units of µCi/ml.

7 Multiply the values in this column by 10-9 to convert to units of µCi/g(wet).

8 Multiply the values in this column by 10-12 to convert to units of µCi/cc.

Table 2.3 DETECTION CAPABILITIES FOR GROUNDWATER HARD-TO-DETECT NUCLIDES -

LOWER LIMITS OF DETECTION (LLD)

ANALYSIS WATER (pCi/L)1 Fe-55 200 Ni-63 30 Sr-89 5 Sr-90 1 Gross Alpha 4 1 Multiply the values in this column by 10-9 to convert to units of µCi/ml.

WBL-23-19 E2-48 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 47 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.3 RADIOLOGICAL ENVIRONMENTAL MONITORING 1/2.3.2 LAND USE CENSUS CONTROLS 1.3.2 A Land Use Census shall be conducted and shall identify within a distance of 8 km (5 miles) the location in each of the 16 meteorological sectors of the nearest milk animal, the nearest residence, and the nearest garden* of greater than 50 m2 (500 ft2) producing fresh leafy vegetation.

Broad leaf vegetation sampling of at least three different kinds of vegetation may be performed at the UNRESTRICTED AREA BOUNDARY in each of two different direction sectors with the highest predicted D/Qs in lieu of the garden census. Controls for broad leaf vegetation sampling in Table 2.3-1 Part 4.c., shall be followed, including analysis of control samples.

APPLICABILITY: At all times.

ACTION:

a. With a Land Use Survey identifying a location(s) that yields a calculated dose or dose commitment greater than the values currently being calculated in Control 2.2.2.3, pursuant to ODCM Administrative Controls 5.1 and 5.2, identify the new location(s) in the next Annual Radioactive Effluent Release Report.

b. With a Land Use Census identifying a location(s) that yields a calculated dose or dose commitment (via the same exposure pathway) 20% greater than at a location from which samples are currently being obtained in accordance with the requirements of ODCM Control 1.3.1, add the new location(s) within 30 days to the radiological environmental monitoring program given in ODCM Section 9.0, if samples are available. The sampling location(s), excluding the control station location, having the lowest calculated dose or dose commitment(s), via the same exposure pathway, may be deleted from this monitoring program after October 31 of the year in which this Land Use Census was conducted.

Pursuant to ODCM Administrative Controls 5.2 and 5.3, submit in the next Annual Radioactive Effluent Release Report documentation for a change in the ODCM reflecting the new location(s) with the information supporting the change in sampling locations.

c. The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.3.2 The Land Use Census shall be conducted during the growing season at least once per 12 months using that information that will provide the best results, such as by a door-to-door survey, mail survey, telephone survey, aerial survey, or by consulting local agricultural authorities. The results of the Land Use Census shall be included in the Annual Radiological Environmental Operating Report pursuant to ODCM Administrative Control 5.1.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 48 of 205 1/2 CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.3 RADIOLOGICAL ENVIRONMENTAL MONITORING 1/2.3.3 INTERLABORATORY COMPARISON PROGRAM CONTROLS 1.3.3 Analyses shall be performed on all radioactive materials, supplied as part of an Interlaboratory Comparison Program which has been approved by the NRC, that correspond to samples required by Table 2.3-1.

APPLICABILITY: At all times.

ACTION:

With analyses not being performed as required above, report the corrective actions being taken to prevent a recurrence to the NRC in the Annual Radiological Environmental Operating Report pursuant to ODCM Administrative Control 5.1.

The provisions of SR 2.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 2.3.3 The Interlaboratory Comparison Program shall be described in ODCM Section 9.4. A summary of the results obtained as a part of the above required Interlaboratory Comparison Program shall be included in the Annual Radiological Environmental Operating Report pursuant to ODCM Administrative Control 5.1.

WBL-23-19 E2-50 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 49 of 205 BASES FOR SECTIONS 1.0 AND 2.0 CONTROLS AND SURVEILLANCE REQUIREMENTS NOTE The BASES contained in succeeding pages summarize the reasons for the Controls in Sections 1.0 and 2.0, but are not part of these Controls.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 50 of 205 BASES FOR SECTIONS 1.0 AND 2.0 - CONTROLS AND SURVEILLANCE REQUIREMENTS 1/2.1 INSTRUMENTATION 1/2.1.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION The radioactive liquid effluent instrumentation is provided to monitor and control, as applicable, the releases of radioactive materials in liquid effluents during actual and potential releases of liquid effluents.

The alarm/trip setpoints for these instruments shall be calculated and adjusted in accordance with the methodology and parameters in ODCM Section 6.2 to ensure that the alarm/trip will occur prior to exceeding ten times the concentration limits of 10 CFR 20. The OPERABILITY and use of this instrumentation is consistent with the requirements of General Design Criteria 60, 63, and 64 of Appendix A to 10 CFR 50.

1/2.1.2 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION The radioactive gaseous effluent instrumentation is provided to monitor and control, as applicable, the releases of radioactive materials in gaseous effluents during actual and potential releases of gaseous effluents. The radiation monitor alarm/trip setpoints for each release point are based on the radioactive noble gases in gaseous effluents. It is not considered practical to apply the instantaneous alarm/trip setpoints to integrating radiation monitors sensitive to radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases. The alarm/trip setpoints for these instruments shall be calculated and adjusted in accordance with the methodology and parameters in ODCM Section 7.1 to ensure that the alarm/trip will occur prior to exceeding the dose rate limits of ODCM Control 1.2.2.1.

The OPERABILITY and use of this instrumentation is consistent with the requirements of General Design Criteria 60, 63, and 64 of Appendix A to 10 CFR 50.

1/2.1.3 METEOROLOGICAL INSTRUMENTATION/DATA The OPERABILITY of the meteorological instrumentation ensures that sufficient meteorological data is available for estimating potential radiation doses to the public as a result of routine or accidental release of radioactive materials to the atmosphere. This capability is required to evaluate the need for initiating protective measures to protect the health and safety of the public and is consistent with the recommendations of Regulatory Guide 1.23, "Onsite Meteorological Programs," February 1972, ANSI/ANS-3.11-2000, "Standard for Determining Meteorological Information at Nuclear Power Sites,"

2000, Regulatory Guide 1.97, "Instrumentation for Light-Water-Cooled Nuclear Power Plants to Assess Plant and Environs Conditions During and Following an Accident," May 1983, and Supplement 1 to NUREG-0737, "Requirements for Emergency Response Capability (Generic Letter 82-33),"

December 1982.

The interval for the sensor calibration portion of the CHANNEL CALIBRATION is based on the length of time a sensor has been in service (i.e., non-service or "shelf" time, not to exceed six months, is not included).

NUREG-0452, "Standard Technical Specifications for Westinghouse Pressurized Water Reactors,"

contained meteorological monitoring instrumentation requirements. As part of the Technical Specification Improvement Program, these requirements have been split out of the Standard Technical Specifications.

Therefore, the meteorological monitoring Control has been included in the ODCM.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 51 of 205 1/2.2 RADIOACTIVE EFFLUENTS 1/2.2.1 LIQUID EFFLUENTS 1/2.2.1.1 CONCENTRATION This Control is provided to ensure that the concentration of radioactive materials released in liquid waste effluents to UNRESTRICTED AREAS will be less than 10 times the concentration values specified in Appendix B, Table 2, Column 2 to 10 CFR 20.1001-20.2402. It provides operational flexibility for releasing liquid effluents in concentrations to follow the Section II.A and II.C design objectives of Appendix I to 10 CFR 50. This limitation provides reasonable assurance that the levels of radioactive materials in bodies of water in UNRESTRICTED AREAS will result in exposures within (1) the Section II.A design objectives of Appendix I, 10 CFR 50, to a MEMBER OF THE PUBLIC, and (2) restrictions authorized by 10 CFR 20.1301(e). The concentration limit for dissolved or entrained noble gases is based upon the assumption that Xe-135 is the controlling radioisotope and its concentration in air (submersion) was converted to an equivalent concentration in water. This specification does not affect the requirement to comply with the annual limitations of 10 CFR 20.1301(a).

This Control applies to the release of radioactive materials in liquid effluents from all reactors at the site.

The required detection capabilities for radioactive materials in liquid waste samples are tabulated in terms of the lower limits of detection (LLDs). Detailed description of the LLD, and other detection limits can be found in HASL Procedures Manual, HASL-300 , Currie, L. A., "Limits for Qualitative Detection and Quantitative Determination - Application to Radiochemistry," Anal. Chem. 40, 586-93 (1968), and Hartwell, J. K., "Detection Limits for Radioanalytical Counting Techniques," Atlantic Richfield Hanford Company Report ARH-SA-215 (June 1975).

1/2.2.1.2 DOSE This Control is provided to implement the requirements of Sections II.A, III.A, and IV.A of Appendix I, 10 CFR 50. The Control implements the guides set forth in Section II.A of Appendix I. Compliance with this Control will be considered to demonstrate compliance with the 0.1 rem limit of 10 CFR 20.1301(a)(1) per 56 FR 23374. The ACTION statements provide the required operating flexibility and at the same time implement the guides set forth in Section IV.A of Appendix I to assure that the releases of radioactive materials in liquid effluents to UNRESTRICTED AREAS will be kept "as low as reasonable achievable."

Also, for fresh water sites with drinking water supplies which can be potentially affected by plant operations, there is reasonable assurance that the operation of the facility will not result in radionuclide concentrations in the finished drinking water that are in excess of the requirements of 40 CFR 141. The dose calculation methodology and parameters in the ODCM implement the requirements in Section III.A of Appendix I that conformance with the guides of Appendix I be shown by calculational procedures based on models and data, such that the actual exposure of a MEMBER OF THE PUBLIC through appropriate pathways is unlikely to be substantially underestimated. The equations specified in the ODCM section for calculating the doses due to the actual release rates of radioactive materials in liquid effluents are consistent with the methodology provided in Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purposes of Evaluating Compliance with 10 CFR Part 50 Appendix I," Revision 1, October 1977 and Regulatory Guide 1.113, "Estimating Aquatic Dispersion of Effluents from Accidental and Routine Reactor Releases for the Purpose of Implementing Appendix I," April 1977.

This Control applies to the release of radioactive materials in liquid effluents from each unit at the site.

When shared Radwaste Treatment Systems are used by more than one unit on a site, the wastes from all units are mixed for shared treatment; by such mixing, the effluent releases cannot accurately be ascribed to a specific unit. An estimate should be made of the contributions from each unit based on input conditions, e.g., flow to each of the radioactive producing units sharing the Radwaste Treatment System.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 52 of 205 For determining conformance to controls, these allocations from shared Radwaste Treatment Systems are to be added to the releases specifically attributed to each unit to obtain the total release per site.

For those nuclides whose activities are determined from composite samples (as noted in Table 2.2-1), the concentrations for the previous composite period will be assumed as the concentration for the next period to perform the calculations in ODCM Sections 6.1 and 6.3.

1/2.2.1.3 LIQUID RADWASTE TREATMENT SYSTEM The OPERABILITY of the LRTS ensures that this system will be available for use whenever liquid effluents require treatment prior to release to the environment. The Control that the appropriate portions of this system be used when specified provides assurance that the releases of radioactive materials in liquid effluents will be kept "as low as reasonably achievable." This requirement implements the requirements of 10 CFR 50.36a, General Design Criteria 60 of Appendix A to 10 CFR 50 and the design objective given in Section II.D of Appendix I to 10 CFR 50. The specified limits governing the use of appropriate portions of the liquid radwaste system were specified as a suitable fraction of the dose design objectives set forth in Section II.A of Appendix I, 10 CFR 50, for liquid effluents.

This Control applies to the release of radioactive materials in liquid effluents from each unit at the site.

When shared LRTS are used by more than one unit on a site, the wastes from all units are mixed for shared treatment; by such mixing, the effluent releases cannot accurately be ascribed to a specific unit.

An estimate should be made of the contributions from each unit based on input conditions, e.g., flow rates and radioactivity concentrations, or, if not practicable, the treated effluent releases be allocated equally to each of the radioactive producing units sharing the LRTS. For determining conformance to controls, these allocations from shared LRTS are to be added to the releases specifically attributed to each unit to obtain the total release per site.

1/2.2.2 GASEOUS EFFLUENTS 1/2.2.2.1 DOSE RATE This Control provides reasonable assurance that radioactive material discharged in gaseous effluents will not result in the exposure of a MEMBER OF THE PUBLIC in an UNRESTRICTED AREA in excess of the design objectives of Appendix I to 10 CFR 50. This Control is provided to ensure that gaseous effluents from all units on the site will be appropriately controlled. It provides operational flexibility for releasing gaseous effluents to satisfy the Section II.A and II.C design objectives of Appendix I to 10 CFR 50. For MEMBERS OF THE PUBLIC who may at times be within the CONTROLLED or RESTRICTED AREAS, the occupancy of that MEMBER OF THE PUBLIC will usually be sufficiently low to compensate for the reduced atmospheric dispersion relative to that for the UNRESTRICTED AREA BOUNDARY. Examples of calculations for such MEMBERS OF THE PUBLIC, with the appropriate occupancy factors, shall be given in the ODCM. The specified release rate limits restrict, at all times, the corresponding gamma and beta dose rates above background to a MEMBER OF THE PUBLIC at or beyond the UNRESTRICTED AREA BOUNDARY to 500 mrem/y to the total body or to 3000 mrem/y to the skin. These limits also restrict, at all times, the corresponding thyroid dose rate above background to a child via the inhalation pathway to 1500 mrem/y. This Control does not affect the requirement to comply with the annual limitations of 10 CFR 20.1301(a).

This requirement applies to the release of radioactive material in gaseous effluents from all reactors at the site.

The required detection capabilities for radioactive materials in gaseous waste samples are tabulated in terms of the lower limits of detection (LLDs). Detailed description of the LLD, and other detection limits can be found in HASL Procedures Manual, HASL-300, Currie, L. A., "Limits for Qualitative Detection and Quantitative Determination - Application to Radiochemistry," Anal. Chem. 40, 586-93 (1968), and WBL-23-19 E2-54 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 53 of 205 Hartwell, J. K., "Detection Limits for Radioanalytical Counting Techniques," Atlantic Richfield Hanford Company Report ARH-SA-215 (June 1975).

For those nuclides whose activities are determined from composite samples (as noted in Table 1.2-1), the concentrations for the previous composite period will be assumed as the concentration for the next period to perform the calculations in ODCM Sections 7.2.

1/2.2.2.2 DOSE - NOBLE GASES This Control is provided to implement the requirements of Sections II.B, III.A and IV.A of Appendix I, 10 CFR 50. The requirement implements the guides set forth in Section I.B of Appendix I. Compliance with this control will be considered to demonstrate compliance with the 0.1 rem limit of 10 CFR 20.1301(a)(1) per 56 FR 23374. The ACTIONs to be taken provide the required operating flexibility and at the same time implement the guides set forth in Section IV.A of Appendix I to assure that the releases of radioactive material in gaseous effluents to UNRESTRICTED AREAS will be kept "as low as reasonably achievable." The surveillance implements the requirements in Section III.A of Appendix I that conformance with the guides of Appendix I be shown by calculational procedures based on models and data such that the actual exposure of a MEMBER OF THE PUBLIC through appropriate pathways is unlikely to be substantially underestimated. The dose calculation methodology and parameters established in ODCM Section 7.3 for calculating the doses due to the actual release rates of radioactive noble gases in gaseous effluents are consistent with the methodology provided in Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purposes of Evaluating Compliance with 10 CFR Part 50, Appendix I," Revision 1, October 1977 and Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water Cooled Reactors," Revision 1, July 1977. The equations provided for determining the air doses at and beyond the UNRESTRICTED AREA BOUNDARY are based upon the historical average atmospheric conditions.

This Control applies to the release of gaseous effluents from each reactor at the site. When shared Radwaste Treatment Systems are used by more than one unit on a site, the wastes from all units are mixed for shared treatment; by such mixing, the effluent releases cannot accurately be ascribed to a specific unit. An estimate should be made of the contributions from each unit based on input conditions, e.g., flow rates and radioactivity concentrations, or, if not practicable, the treated effluent releases be allocated equally to each of the radioactive producing units sharing the Radwaste Treatment System. For determining conformance to requirements, these allocations from shared Radwaste Treatment Systems are to be added to the releases specifically attributed to each unit to obtain the total release per site.

1/2.2.2.3 DOSE - IODINE-131, IODINE-133, C-14, TRITIUM, AND RADIONUCLIDES IN PARTICULATE FORM WITH HALF-LIVES GREATER THAN EIGHT DAYS This Control is provided to implement the requirements of Sections II.C, III.A and IV.A of Appendix I, 10 CFR 50. The Control implements the guides set forth in Section II.C of Appendix I. Compliance with this control will be considered to demonstrate compliance with the 0.1 rem limit of 10 CFR 20.1301(a)(1) per 56 FR 23374. The ACTION to be taken provides the required operating flexibility and at the same time implements the guides set forth in Section IV.A of Appendix I to assure that the releases of radioactive material in gaseous effluents will be kept "as low as reasonably achievable." ODCM Section 7.4 calculational methods specified in the Surveillance Requirement implement the requirements in Section III.A of Appendix I that conformance with the guides of Appendix I be shown by calculational procedures based on models and data such that the actual exposure of a MEMBER OF THE PUBLIC through appropriately modeled pathways is unlikely to be substantially underestimated. ODCM Section 7.4 calculational methodology and parameters for calculating the doses due to the actual release rates of the subject materials are consistent with the methodologies provided in NUREG/CR-1004, "A Statistical Analysis of Selected Parameters for Predicting Food Chain Transport and Internal Dose of Radionuclides," October 1979 and Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purposes of Evaluating Compliance with 10 CFR Part 50, WBL-23-19 E2-55 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 54 of 205 Appendix I," Revision 1, October 1977 and Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water Cooled Reactors,"

Revision 1, July 1977. These equations also provide for determining the actual doses based upon the historical average atmospheric conditions. The release rate controls for I-131, I-133, C-14, tritium and particulate radionuclides with half-lives greater than eight days are dependent upon the existing radionuclide pathways to man in the areas at and beyond the UNRESTRICTED AREA BOUNDARY.

The pathways that were examined in the development of the calculations were: (1) individual inhalation of airborne radionuclides, (2) deposition of radionuclides onto green leafy vegetation with subsequent consumption by man, (3) deposition onto grassy areas where milk animals and beef producing animals graze with consumption of the milk and beef by man, and (4) deposition on the ground with subsequent exposure of man.

For those nuclides whose activities are determined from composite samples, the concentrations for the previous composite period will be assumed as the concentration for the next period to perform the calculations in ODCM Section 7.4.

1/2.2.2.4 GASEOUS RADWASTE TREATMENT SYSTEM The OPERABILITY of the WASTE GAS HOLDUP SYSTEM and the VENTILATION EXHAUST TREATMENT SYSTEM ensures that the systems will be available for use whenever gaseous effluents require treatment prior to release to the environment. The Control that the appropriate portions of these systems be used when specified provides reasonable assurance that the releases of radioactive materials in gaseous effluents will be kept "as low as is reasonably achievable." This requirement implements the requirements of 10 CFR 50.36a, General Design Criteria 60 of Appendix A to 10 CFR 50, and the design objectives given in Section II.D of Appendix I to 10 CFR 50. The specified limits governing the use of appropriate portions of the systems were specified as a suitable fraction of the dose design objectives set forth in Section II.B and II.C of Appendix I, 10 CFR 50, for gaseous effluents.

This Control applies to the release of radioactive materials in gaseous effluents from each unit at the site.

When shared Radwaste Treatment Systems are used by more than one unit on a site, the wastes from all units are mixed for shared treatment; by such mixing, the effluent releases cannot accurately be ascribed to a specific unit. An estimate should be made of the contributions from each unit based on input conditions, e.g., flow rates and radioactivity concentrations, or, if not practicable, the treated effluent releases be allocated equally to each of the radioactive producing units sharing the Radwaste Treatment System. For determining conformance to Controls, these allocations from shared Radwaste Treatment Systems are to be added to the releases specifically attributed to each unit to obtain the total release per site.

1/2.2.3 TOTAL DOSE This Control is provided to meet the dose limitations of 40 CFR 190 that have been incorporated into 10 CFR 20.1301(d). The Control requires the preparation and submittal of a Special Report whenever the calculated doses due to releases of radioactivity and to radiation from uranium fuel cycle sources exceed 25 mrem to the total body or any other organ, except the thyroid, which shall be limited to less than or equal to 75 mrem. For sites containing up to 4 reactors, it is highly unlikely that the resultant dose to a MEMBER OF THE PUBLIC will exceed the dose limits of 40 CFR 190 if the individual reactors remain within twice the dose design objectives of Appendix I and if direct radiation doses from the units and from outside storage tanks are kept small. The Special Report will describe a course of action that should result in the limitation of annual dose to a MEMBER OF THE PUBLIC to within the 40 CFR 190 limits. For the purposes of the Special Report, it may be assumed that the dose commitment to the MEMBER OF THE PUBLIC from other uranium fuel cycle sources is negligible, with the exception that dose contributions from other nuclear fuel cycle facilities at the same site or within a radius of 8 km must be considered. If the dose to any MEMBER OF THE PUBLIC is estimated to exceed the requirements of 40 CFR Part 190, the Special Report with a request for a variance (provided the release conditions resulting in violation of 40 CFR 190 have not already been corrected), in accordance with the provisions WBL-23-19 E2-56 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 55 of 205 of 40 CFR 190.11 and 10 CFR 20.2203(a)(4), is considered to be a timely request and fulfills the requirements of 40 CFR 190 until NRC staff action is completed. The variance only relates to the limits of 40 CFR 190, and does not apply in any way to the other requirements for dose limitation of 10 CFR 20, as addressed in ODCM Controls 1.2.1.1 and 1.2.2.1. An individual is not considered a MEMBER OF THE PUBLIC during any period in which he/she is engaged in carrying out any operation that is part of the nuclear fuel cycle. Demonstration of compliance with the limits of 40 CFR 190 or with the design objectives of Appendix I to 10 CFR 50 will be considered to demonstrate compliance with the 0.1 rem limit of 10 CFR 20.1301.

The requirements for evaluating compliance with 40 CFR 302 are added to ensure compliance with these limits. The regulation states that federally permitted releases do not have to determine compliance with the reportable quantities unless the permitted release allowance is exceeded.

1/2.3 RADIOLOGICAL ENVIRONMENTAL MONITORING 1/2.3.1 MONITORING PROGRAM The Radiological Environmental Monitoring Program required by this Control provides representative measurements of radiation and of radioactive materials in those exposure pathways and for those radionuclides that lead to the highest potential radiation exposures of MEMBERS OF THE PUBLIC resulting from the plant operation. This monitoring program implementsSection IV.B.2 of Appendix I to 10 CFR 50 and thereby supplements the Radiological Effluent Monitoring Program by verifying that the measurable concentration of radioactive materials and levels of radiation are not higher than expected on the basis of the effluent measurements and modeling of the environmental exposure pathways.

Guidance for this monitoring program is provided by the Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979. The initially specified monitoring program will be effective for at least the first three years of commercial operation. Following this period, program changes may be initiated based on operational experience.

The required detection capabilities for environmental sample analyses are tabulated in terms of the lower limits of detection (LLDs). The LLDs required by Table 2.3-3 are considered optimum for routine environmental measurements in industrial laboratories. It should be recognized that the LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system and not as a posteriori (after the fact) limit for a particular measurement.

Detailed description of the LLD, and other detection limits can be found in HASL Procedures Manual, HASL-300, Currie, L. A., "Limits for Qualitative Detection and Quantitative Determination - Application to Radiochemistry," Anal. Chem. 40, 586-93 (1968), and Hartwell, J. K., "Detection Limits for Radioanalytical Counting Techniques," Atlantic Richfield Hanford Company Report ARH-SA-215 (June 1975).

1/2.3.2 LAND USE CENSUS This Control is provided to ensure that changes in the use of areas at and beyond the UNRESTRICTED AREA BOUNDARY are identified and that modifications to the monitoring program are made if required by the results of that census. The best information from the door-to-door survey, mail survey, telephone survey, aerial survey, or by consulting with local agricultural authorities shall be used. This census satisfies the requirements of Section IV.B.3 of Appendix I to 10 CFR 50. Restricting the census to gardens of greater than 50 m2 provides assurance that significant exposure pathways via leafy vegetables will be identified and monitored since a garden of this size is the minimum required to provide the quantity (26 kg/y) of leafy vegetables assumed in Regulatory Guide 1.109 for consumption by a child. To determine this minimum garden size, the following assumptions were used, 1) that 20% of the garden was used for growing broad leaf vegetation (i.e., similar to lettuce and cabbage), and 2) a vegetation yield of 2 kg/m2.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 56 of 205 1/2.3.3 INTERLABORATORY COMPARISON The Control for participation in an approved Interlaboratory Comparison Program is provided to ensure that independent checks on the precision and accuracy of the measurements of radioactive material in environmental sample matrices are performed as part of the quality assurance program for environmental monitoring in order to demonstrate that the results are valid for the purposes of Section IV.B.2 of Appendix I to 10 CFR 50.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 57 of 205 3.0 DEFINITIONS The defined terms in this section appear in capitalized type in the text and are applicable throughout these Controls and Bases.

3.1 ACTION ACTION shall be that part of a Control that prescribes remedial measures required under designated conditions.

3.2 CHANNEL CALIBRATION A CHANNEL CALIBRATION shall be the adjustment, as necessary, of the channel such that it responds within the necessary range and accuracy to known values of input. The CHANNEL CALIBRATION shall encompass the entire channel including the sensor and alarm, interlock, display, and/or trip functions. Calibration of instrument channels with resistance temperature detector or thermocouple sensors shall consist of an in place cross calibration of the remaining adjustable devices in the channel. Whenever a sensing element is replaced, the next required in place cross calibration consists of comparing the other sensing elements with the recently installed sensing element. The CHANNEL CALIBRATION may be performed by any series of sequential, overlapping channel calibrations or total channel steps such that the entire channel is calibrated.

3.3 CHANNEL CHECK A CHANNEL CHECK shall be the qualitative assessment, by observation, of channel behavior during operation. This determination shall include, where possible, comparison of the channel indication and status to other indications or status derived from independent instrument channels measuring the same parameter.

3.4 CHANNEL OPERATIONAL TEST A CHANNEL OPERATIONAL TEST shall be the injection of a simulated signal or actual signal into the channel as close to the sensor as practicable to verify OPERABILITY of alarm, interlock, and/or trip functions. The CHANNEL OPERATIONAL TEST shall include adjustments, as necessary, of the required alarm, interlock, and/or trip setpoints such that the setpoints are within the required range and accuracy.

3.5 CONTROLLED AREA A CONTROLLED AREA, as defined in 10 CFR 20, is the area outside the RESTRICTED AREA but inside the 10 CFR 20 defined SITE BOUNDARY, access to which can be limited by the licensee for any reason (see Figure 3.1).

3.6 DOSE EQUIVALENT I-131 DOSE EQUIVALENT I-131 shall be that concentration of I-131 (µCi/g) that alone would produce the same thyroid dose as the quantity and isotopic mixture of I-131, I-132, I-133, I-134, and I-135 actually present. The thyroid dose conversion factors used for this calculation shall be those listed in Table E-7 of NRC Regulatory Guide 1.109, Revision 1, October 1977.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 58 of 205 3.0 DEFINITIONS 3.7 FREQUENCY NOTATION The FREQUENCY NOTATION specified for the performance of Surveillance Requirements shall correspond to the intervals defined in Table 3.1.

3.8 MEMBER(S) OF THE PUBLIC MEMBER(S) OF THE PUBLIC, as defined in 10 CFR 20, is any individual except when that individual is receiving an occupational dose.

3.9 MODE A MODE shall correspond to any one inclusive combination of core reactivity condition, power level, and average reactor coolant temperature specified in Table 3.2 with fuel in the reactor vessel and reactor vessel head closure bolt tensioning.

3.10 OPERABLE - OPERABILITY A system, subsystem, train, component, or device shall be OPERABLE or have OPERABILITY when it is capable of performing its specified function(s), and when all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication and other auxiliary equipment that are required for the system, subsystem, train, component, or device to perform its specified function(s) are also capable of performing their related support function(s).

3.11 PURGE - PURGING PURGE or PURGING shall be any controlled process of discharging air or gas from a confinement to maintain temperature, pressure, humidity, concentration or other operating condition, in such a manner that replacement air or gas is required to purify the confinement.

3.12 RATED THERMAL POWER RATED THERMAL POWER shall be a total reactor core heat transfer rate to the reactor coolant of 3459 MWt for Unit 1 and 3411 MWt for Unit 2.

3.13 REPORTABLE EVENT A REPORTABLE EVENT shall be any of those conditions specified in Section 50.73 of 10 CFR 50.

3.14 RESTRICTED AREA/RESTRICTED AREA BOUNDARY The RESTRICTED AREA, as defined in 10 CFR 20, is that area, access to which is limited by the licensee for the purposes of protecting individuals against undue risks from exposure to radiation and radioactive materials. RESTRICTED AREA does not include areas used as residential quarters, but separate rooms in a residential building may be set apart as a RESTRICTED AREA (see Figure 3.1).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 59 of 205 3.0 DEFINITIONS 3.15 SITE BOUNDARY The SITE BOUNDARY is defined in 10 CFR 20 as that line beyond which the land or property is not owned, leased, or otherwise controlled by the licensee (see Figure 3.1). For WBN ODCM purposes, the SITE BOUNDARY and the UNRESTRICTED AREA BOUNDARY are identical.

3.16 SOURCE CHECK A SOURCE CHECK shall be the qualitative assessment of channel response when the channel sensor is exposed to a radioactive source or other channel sensor internal test circuits.

3.17 UNRESTRICTED AREA/UNRESTRICTED AREA BOUNDARY An UNRESTRICTED AREA, as defined in 10 CFR 20, shall be any area, access to which is not controlled by the licensee for the purposes of protection of individuals from exposure to radiation and radioactive materials, or any area within the SITE BOUNDARY used for residential quarters or for industrial, commercial, institutional, and/or recreational purposes. For WBN ODCM purposes, the SITE BOUNDARY and the UNRESTRICTED AREA BOUNDARY are identical.

3.18 VENTILATION EXHAUST TREATMENT SYSTEM A VENTILATION EXHAUST TREATMENT SYSTEM is any system designed and installed to reduce gaseous radioiodine or radioactive material in particulate form in effluents by passing ventilation or vent exhaust gases through charcoal adsorbers and/or HEPA filters for the purpose of removing iodines or particulates from the gaseous exhaust stream prior to the release to the environment (such a system is not considered to have any effect on noble gas effluents). Engineered Safety Feature (ESF) atmospheric cleanup systems are not considered to be VENTILATION EXHAUST TREATMENT SYSTEM components.

3.19 WASTE GAS HOLDUP SYSTEM A WASTE GAS HOLDUP SYSTEM is any system designed and installed to reduce radioactive gaseous effluents by collecting Reactor Coolant System offgases from the Reactor Coolant System and providing for delay or holdup for the purpose of reducing the total radioactivity prior to release to the environment.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 60 of 205 Table 3.1 - FREQUENCY NOTATION NOTATION FREQUENCY S At least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

D At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

W At least once per 7 days.

M At least once per 31 days.

Q At least once per 92 days.

SA At least once per 184 days.

3Q At least once per 276 days.

Y At least once per 365 days.

R At least once per 18 months.

N/A Not applicable.

P Completed prior to each release.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 61 of 205 Table 3.2 - OPERATIONAL MODES REACTIVITY CONDITION, % RATED THERMAL AVERAGE COOLANT MODE Keff POWER* TEMPERATURE

1. Power Operation 0.99 > 5% N/A

2. Startup 0.99 5% N/A

3. Hot Standby < 0.99 N/A 350°F

4. Hot Shutdown** < 0.99 N/A 350°F > Tavg > 200°F

5. Cold Shutdown** < 0.99 N/A 200°F

6. Refueling*** N/A N/A N/A

Excluding decay heat.

- All reactor vessel head closure bolts fully tensioned.

- - One or more reactor vessel head closure bolts less than fully tensioned.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 4 0 MANUAL (ODCM) Page 62 of 205 WBL-23-19 E2-64 of 207

WBN OFFSITE DOSE CALCULATION MANUAL Revision 4 0 (ODCM) Page 63 of 205 4.0 - (NOT USED) 5.0 ADMINISTRATIVE CONTROLS 5.1 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT As required by WBN TS 5.9.2, Routine Annual Radiological Environmental Operating Reports covering the operation of both units during the previous calendar year shall be submitted prior to May 15 of each year.

The annual radiological environmental operating reports shall include summaries, interpretations, and an analysis of trends of the results of the radiological environmental surveillance activities for the report period, including a comparison with preoperational studies, with operational controls, and with previous environmental surveillance reports and an assessment of the observed impacts of the plant operation on the environment. The reports shall also include the results of land use censuses required by ODCM Control 1.3.2.

The annual radiological environmental operating reports shall include summarized and tabulated results of these analyses and measurements in the format of the table in the Radiological Assessment Branch Technical Position, Revision 1, November 1979. In the event that some results are not available for inclusion with the report, the report shall be submitted noting and explaining the reasons for the missing results. The missing data shall be submitted as soon as possible in a supplementary report.

The reports shall also include the following: a summary description of the radiological environmental monitoring program; at least two legible maps (one map shall cover stations near the UNRESTRICTED AREA BOUNDARY, a second shall include the more distant stations) covering all sampling locations keyed to a table giving distances and directions from the centerline of one reactor; and the results of licensee participation in the Interlaboratory Comparison Program and the corrective actions being taken if the specified program is not being performed as required by ODCM Control 1.3.1; discussion of all deviations from the sampling schedule of Table 2.3-1; reasons for not conducting the radiological environmental monitoring program as required by ODCM Control 1.3.1 and discussions of environmental sample measurements that exceed the reporting levels of Table 2.3-2 but are not the result of plant effluents, pursuant to action b. of ODCM Control 1.3.1; and discussion of all analyses in which the LLD required by Table 2.3-3 was not achievable.

5.2 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT As required by WBN TS 5.9.3, a Radioactive Effluent Release Report covering the operation of both units during the previous year shall be submitted prior to May 1 of each year. The period of the first report shall begin with the date of initial criticality.

The Annual Radioactive Effluent Release Report shall include a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the units as outlined in Regulatory Guide 1.21, "Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants," Revision 1, June 1974, with data summarized on a quarterly basis following the format of Appendix B thereof, as applicable. Additional requirements for reporting solid waste are specified in the Process Control Program.

The radioactive effluent release reports shall include a list and description of unplanned releases from the site to UNRESTRICTED AREAS of radioactive materials in gaseous and liquid effluents made during the reporting period.

The radioactive effluent release reports shall include any changes made during the reporting period to the Process Control Program, and to the ODCM pursuant to ODCM Administrative Control 5.3, as well as any major changes to Liquid, Gaseous, or Solid Radwaste Treatment Systems, pursuant to WBN Technical WBL-23-19 E2-65 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 64 of 205 Specifications. It shall also include a listing of new location for dose calculations and/or environmental monitoring identified by the Land Use Census pursuant to ODCM Control 1.3.2.

The radioactive effluent release reports shall also include the following: an explanation as to why the inoperability of liquid or gaseous effluent monitoring instrumentation was not corrected within the time specified in ODCM Controls 1.1.1 or 1.1.2, respectively.

The radioactive effluent release report shall include an annual summary of hourly meteorological data collected over the previous year. This annual summary may be either in the form of an hour-by-hour listing on magnetic tape of wind speed, wind direction, atmospheric stability, and precipitation (if measured), or in the form of joint frequency distributions of wind speed, wind direction, and atmospheric stability. In lieu of submission with the radioactive effluent release report, this summary of required meteorological data may be retained on site in a file that shall be provided to NRC upon request. This same report shall include an assessment of the radiation doses due to radioactive liquid and gaseous effluents released from the unit or station during the previous calendar year. This same report shall also include an assessment of the radiation doses from radioactive liquid and gaseous effluents to MEMBERS OF THE PUBLIC due to their activities inside the UNRESTRICTED AREA BOUNDARY during the report period. All assumptions used in making these assessments (i.e., specific activity, exposure time, and location) shall be included in these reports. The meteorological conditions concurrent with the time of release of radioactive materials in gaseous effluents, as determined by sampling frequency and measurement, shall be used for determining the gaseous pathway doses. The assessment of radiation doses shall be performed in accordance with Sections 6.6 and 7.7. [SOURCE NOTE 8]

The radioactive effluent release report shall also include an assessment of radiation doses to the likely most exposed MEMBER OF THE PUBLIC from reactor releases and other nearby uranium fuel cycle sources, including doses from primary effluents and direct radiation, for the previous calendar year to show conformance with 40 CFR 190, in accordance with ODCM Section 8.1.

The radioactive effluent release report shall include results from any groundwater samples obtained during the reporting period that are not described in the ODCM.

The radioactive effluent release report shall include any onsite radioactive spills or leaks, and their assigned doses that occurred during the reporting period.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 65 of 205 5.3 OFFSITE DOSE CALCULATION MANUAL CHANGES As required by WBN TS 5.7.2.3, changes to the ODCM:

1. Shall be documented and records of reviews performed shall be retained. This documentation shall contain:

a. Sufficient information to support the change together with the appropriate analyses or evaluations justifying the change(s) and

b. A determination that the change will maintain the level of radioactive effluent control required by 10 CFR 20.1302, 40 CFR 190, 10 CFR 50.36a, and Appendix I to 10 CFR 50 and not adversely impact the accuracy or reliability of effluent, dose, or setpoint calculations.

2. Shall become effective after review and acceptance by the PORC and the approval of the Plant Manager.

3. Shall be submitted to the NRC in the form of a complete, legible copy of the entire ODCM as a part of or concurrent with the Annual Radioactive Effluent Release Report for the period of the report in which any change to the ODCM was made. Each change shall be identified by markings in the margin of the affected pages, clearly indicating the area of the page that was changed, and shall indicate the date (i.e., month/year) the change was implemented.

Changes to the ODCM shall be performed in accordance with the requirements of Appendix C.

5.4 SPECIAL REPORTS Special Reports shall be submitted in accordance with 10 CFR Part 50.4. [SOURCE NOTE 16]

5.5 40 CFR 302 REPORTING Any releases of radioactivity exceeding both the 40 CFR 190 dose limits and 40 CFR 302.4 reportable quantities, shall be reported immediately to the National Response Center in accordance with the requirements given in 40 CFR 302.6.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 66 of 205 5.6 CHANGES TO RADWASTE TREATMENT SYSTEM Licensee-initiated major changes to the Radwaste Treatment Systems (liquid and gaseous) shall be reported to the Commission in the Annual Radioactive Effluent Release Report for the period in which the evaluation was reviewed by the Plant Operations Review Committee (PORC). The discussion of each change shall contain:

1. A summary of the evaluation that led to the determination that the change could be made in accordance with 10 CFR 50.59;

2. Sufficient detailed information to totally support the reason for the change without benefit of additional or supplemental information;

3. A detailed description of the equipment, components, and processes involved and the interfaces with other plant systems;

4. An evaluation of the change, which shows the predicted releases of radioactive materials in liquid and gaseous effluents that differ from those previously evaluated in the Final Safety Analysis Report;

5. An evaluation of the change, which shows that the expected maximum exposures to a MEMBER OF THE PUBLIC in the UNRESTRICTED AREA and to the general population that differ from those previously estimated in the Final Safety Analysis Report;

6. A comparison of the predicted releases of radioactive materials, in liquid and gaseous effluents, to the actual releases for the period prior to when the changes are to be made;

7. An estimate of the exposure to plant operating personnel as a result of the change;

8. Documentation of the fact that the change was reviewed and found acceptable by the PORC.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 67 of 205 6.0 - LIQUID EFFLUENTS INTRODUCTION Radioactive liquid effluents from WBN enter the UNRESTRICTED AREA through the diffusers into the Tennessee River. There are four plant systems from which radioactive effluents are released. These are the Liquid Radwaste Treatment System (LRTS), the Condensate Demineralizer System, the Turbine Building Sump (TBS), and the Units 1 and 2 Steam Generator Blowdown (SGBD). Figure 6.1 provides an outline of these liquid release paths with associated radiation monitors.

The LRTS, the Condensate Demineralizer System and the SGBDs flow into the Cooling Tower Blowdown (CTBD) for dilution. Each of these release paths is also monitored by a radiation monitor. These monitors perform two main functions: to identify any unexpected radioactivity releases, and to ensure that the concentration limits of ODCM Control 1.2.1.1 are not exceeded. Each monitor has an alarm/trip setpoint which will alarm if the monitor's setpoint is exceeded. Alarm and trip functions are not provided by separate devices, therefore the alarm/trip setpoint is a single calculated value. The monitors on the Radwaste, Condensate Demineralizer, and SGBD systems will alarm and isolate any release which exceeds the alarm/trip setpoint. The TBS radiation monitor will alarm if the setpoint is exceeded, but this monitor does not have an isolation function.

Releases are made as either a batch or continuous release. Releases from Radwaste Tanks (see Figure 6.2) and the Condensate Demineralizer tanks (see Figure 6.3) are made as batch releases. The TBS, SGBD, and groundwater sump are continuous releases when flow exists.

For batch releases, any tank to be released is sampled for radioactivity, as described in ODCM Section 6.1.1. The tank contents are analyzed to determine the maximum allowable release flow rates to ensure compliance with the concentration limits of ODCM Control 1.2.1.1 as described in ODCM Section 6.1.2. The sampling results are also used to determine a setpoint for the associated radiation monitor for the release in accordance with ODCM Section 6.2.3.

For continuous releases, the pathways are sampled for radioactivity periodically, as described in ODCM Section 6.1.1. The samples are analyzed to ensure compliance with the concentration limits of ODCM Control 1.2.1.1, as described in ODCM Section 6.1.2. The sampling results are also used to determine a setpoint for the associated radiation monitor for the release in accordance with ODCM Section 6.2.3.

Dose calculations are performed for each sampling period, or release, as applicable, to determine compliance with ODCM Control 1.2.1.2 as detailed in ODCM Sections 6.3 and 6.4. Once per month, the projected dose is calculated, as outlined in Section 6.5, to determine compliance with ODCM Control 1.2.1.3. The calculational methodologies are based on the guidance provided in NUREG-0133 (Reference 3) and Regulatory Guide 1.109 (Reference 4).

The quantities of each radionuclide identified and released are input into a more rigorous calculation methodology, described in ODCM Section 6.6, to determine the individual and population doses to be reported to the NRC in the Annual Radioactive Effluent Release Report. These dose methodologies are based on the guidance provided in Regulatory Guide 1.109 (Reference 4).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 68 of 205 RELEASE POINTS Liquid Radwaste Treatment System The LRTS processes liquid from the Reactor Building and Auxiliary Building Floor Drains, the CVCS Holdup Tanks, the Laundry/Hot Shower Tanks, the Waste Condensate Tanks and Chemical Drain Tank.

Figure 6.2 provides a schematic of the Liquid Radwaste System, showing the flow pathways and flow rates. The LRTS has individual release points for each of the tanks. The routine release points for liquid radwaste are the Monitor Tank and the Cask Decontamination Collector Tank (CDCT) and the Tritiated Water Storage Tank (TWST). The Monitor Tank has a capacity of 20,462 gal and can be released at a maximum design flow rate of 150 gpm. The CDCT has a capacity of 15,000 gal and can be released at a maximum design flow rate of 100 gpm. The TWST has a capacity of 500,000 gal and can be released at a maximum design flow rate of 140 gpm. The Monitor Tank, CDCT, and TWST discharge to the Cooling Tower Blowdown line as a batch release and are monitored by radiation monitor 0-RE-90-122. There is a flow interlock on the CTBD which suspends the release if the flow is less than 30,000 gpm.

Condensate Demineralizer System The Condensate Demineralizer System liquid wastes are released from the High Crud Tanks (HCT-A and -B), the Neutralization Tank, and the Non-Reclaimable Waste Tank (NRWT). Figure 6.3 provides a schematic of the Condensate Demineralizer System, showing the flow pathways and flow rates. The HCTs have a capacity of 20,000 gal and a maximum design discharge flow rate of 150 gpm. The Neutralization Tank has a capacity of 20,000 gal and a maximum design discharge flow rate of 100 gpm.

The NRWT has a capacity of 11,000 gal and a maximum design discharge flow rate of 115 gpm. Each of these tanks is defined as a release point for the system. When tank contents are required to be permitted for radioactivity, the Condensate Demineralizer System waste is released to the CTBD line and is monitored by radiation monitor 0-RE-90-225. There is a flow interlock on the CTBD which suspends the release if the flow is less than 30,000 gpm. The low flow interlock may be bypassed and releases made from the Condensate Demineralizer System with less than 30,000 gpm CTBD flow provided the sum of the ratios of the ECLs for all release points is 10.

Turbine Building Sump The TBS normally releases to the Low Volume Waste Treatment Pond, but can be released to either the Metal Waste Cleaning Ponds or the 35 acre Yard Holding Pond. The TBS has a capacity of 57,783 gal and a design discharge release rate of 2,000 gpm per pump. The TBS is monitored by radiation monitor 0-RE-90-212.

Steam Generator Blowdown The SGBD is processed in the Steam Generator Blowdown Flash Tanks or SGBD Heat Exchangers.

Figure 6.3 provides a schematic of the SGBD System, showing the flow pathways and flow rates. The SGBD discharge has a maximum design flow rate of 65.5 gpm per steam generator when discharging to the Cooling Tower Blowdown. SGBD is recycled or is released to the CTBD line and monitored by radiation monitors 1,2-RE-90-120 and 1,2-RE-90-121. There is a flow interlock on the CTBD which suspends the release if the flow is less than 30,000 gpm. The low flow interlock may be bypassed and releases made from the Steam Generator Blowdown System with less than 30,000 gpm CTBD flow provided the sum of the ratios of the ECLs for all release points is 10.

Groundwater Sump The Groundwater Sump (GWS) normally releases to the 35 acre Yard Holding Pond via the storm drains.

The GWS has a design discharge release rate of 300 gpm per pump. The GWS is not monitored by a radiation monitor.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 69 of 205 6.1 LIQUID RELEASES 6.1.1 Pre-Release Analysis Radwaste and Condensate Demineralizer tanks will be mixed for a period of time (specified in plant procedures) prior to sampling to ensure that a representative sample is obtained. Recirculation times to ensure adequate mixing will be established by testing. Periodically, checks will be made to ensure a representative mixing of tank contents. Prior to any batch release, a grab sample will be taken and analyzed in accordance with Table 2.2-1.

Releases from the steam generator blowdown, turbine building sump, and groundwater sump are considered continuous. For continuous releases, daily grab or composite samples will be taken on days when releases are being made and analyzed in accordance with Table 2.2-1.

Composite samples are maintained during periods of radioactive discharge from all pathways (as required by Table 2.2-1) to determine the concentration of certain nuclides (H-3, Fe-55, Sr-89, Sr-90, and gross alpha). For those nuclides whose activities are determined from composite samples, the concentrations for the previous composite period can be assumed as the concentration for the next period to perform the calculations in Sections 6.3 and 6.5. The actual measured concentrations will be used for the dose calculations described in Section 6.6.

A maximum allowable waste flow rate, which will ensure compliance with ODCM Control 1.2.1.1, will be determined using Equations 6.1 and 6.2. Setpoints for the release are determined as described in Section 6.2. Dose calculations are performed in accordance with Section 6.3 6.1.2 Effluent Concentration Limits (ECL)-Sum of the Ratios To determine release parameters to ensure compliance with ODCM Control 1.2.1.1, a sum of the ratios calculation is performed. The sum of the ratios (R) for each release point will be calculated by the following relationship.

Ci R= (6.1) i ECL i where:

R = the sum of the ratios for the release point.

ECLi = the ECL of radionuclide i, µCi/ml, from 10 CFR 20, Appendix B, Table 2, Column 2.

Ci = concentration of radionuclide i, µCi/ml.

The sum of the ECL ratios must be 10 following dilution due to the releases from any or all of the release points described above. The ECL ratios for releases from either the Turbine Building Sump or the Groundwater Sump will be 10 at the sump.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 70 of 205 The following relationship is used to ensure that this criterion is met:

f1R 1 + f 2 R 2 + f 3R 3 + f 4 R 4 RGWS + R TBS + 10.0 (6.2)

F where:

RGWS = sum of the ECL ratios of the groundwater sump as determined by equation 6.1.

RTBS = sum of the ECL ratios of the turbine building sump as determined by equation 6.1.

f1,2,3,4 = effluent flow rate for radwaste, condensate demineralizer system and the steam generator blowdowns, respectively, gpm.

R1,2,3,4 = sum of ECL ratios for radwaste, condensate demineralizer system and the steam generator blowdowns, respectively, as determined by equation 6.1.

F = dilution flow rate for CTBD. The minimum assumed flow of 30,000 gpm will be used for radwaste pre-release calculations.

6.1.3 Post-Release Analysis A post-release evaluation will be done using actual release data to ensure that the limits specified in ODCM Control 1.2.1.1 were not exceeded.

A composite list of concentrations (Ci), by nuclide, will be used with the actual waste flow (f) and dilution (F) flow rates (or volumes) during the release. The data will be evaluated to demonstrate compliance with the limits in ODCM Control 1.2.1.1. [SOURCE NOTE 10]

6.2 INSTRUMENT SETPOINTS Liquid effluent monitor setpoints are determined to ensure that the concentration of radioactive material released at any time from the site to UNRESTRICTED AREAS does not exceed ten times the ECL limits referenced in ODCM Control 1.2.1.1 and to identify any unplanned releases.

The liquid effluent radiation monitors and their setpoint information are outlined below:

Pathway Monitor Default Setpoint Setpoint ODCM Limit Section ERCW 0-RE-90-133 Section 6.2.1 N/A 6.2.1 0-RE-90-134 0-RE-90-140 0-RE-90-141 Radwaste 0-RE-90-122 Section 6.2.2 Smax 6.2.2 Condensate 0-RE-90-225 Section 6.2.2 Smax 6.2.2 Demineralizer TBS 0-RE-90-212 Section 6.2.2 Smax 6.2.2 SGBD 1-RE-90-120 Section 6.2.2 Smax 6.2.2 2-RE-90-120 1-RE-90-121 2-RE-90-121 WBL-23-19 E2-72 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 71 of 205 6.2.1 Process Discharge Point Monitor Setpoints (0-RE-90-133,-134,-140,-141)

The setpoints for the ERCW monitors (0-RE-90-133,-134,-140,-141) must ensure that the concentration of radioactive materials released at any time from the site do not exceed the limits given in ODCM Control 1.2.1.1. Since this effluent stream will not routinely contain radioactivity, the setpoints for these monitors will be set at two times background to ensure that any radioactivity is identified. Site procedures will document and control this value.

6.2.2 Release Point Monitor Setpoints (0-RE-90-122; 0-RE-90-225; 0-RE-90-212; 1,2-RE-90-120,-121)

The radiation monitor for batch release points, the Liquid Radwaste System and the Condensate Demineralizer System, monitors the undiluted waste stream as it comes out of a tank. The purpose of the monitor setpoints for these batch releases is to identify any gamma-emitting release that is larger than expected and would have the potential to exceed the limits after dilution. Setpoints are calculated as described by equations 6.3, 6.4, and 6.5 and may be set at a default value. Site procedures will document and control this value.

The continuous release points, the Steam Generator Blowdowns, and the Turbine Building Sump, will not be releasing gamma-emitting radioactivity unless there is or has been a primary to secondary leak. If this is the case, the continuous release points are monitored to identify any gamma-emitting release that is larger than expected and would have the potential to exceed the ODCM Control 1.2.1.1 concentration limits after dilution. The monitor setpoints are calculated using Equations 6.3, 6.4, and 6.5 when this is the case. When these release points are being treated in this manner, a single release is defined as all effluent released through this point on a continuous bases for a period of time (usually one week). During periods when there is no identified primary to secondary leak, these monitors are set to 2 times background. Site procedures will document and control these setpoint values.

For each release from a release point, two setpoints are calculated: one based on the monitor response to the contents of the effluent stream (as described below in Equation 6.4); and another based on the predicted response of the monitor to the activity in the release stream if it were large enough to exceed ten times the 10 CFR 20 limits after dilution (as described below in Equation 6.5). A comparison is made between these two calculated setpoints and the lower of the two is used for the release. If default setpoints are used then a comparison is made between the two calculated setpoints and the default setpoint as described below to choose the appropriate setpoint for the monitor during the release (after the release, the monitor is normally returned to the default setpoint).

1. If SER < Sdefault < Smax Reported = Sdefault

2. If SER < Smax < Sdefault Reported = SER

3. If SER Smax Reported = Smax 6.2.2.1 Expected Response An expected response (ER) is calculated for the monitor for each release:

ER = BKG + (E C ) (6.3) i i i

where:

BKG = monitor background, cpm. The monitor's background is controlled at an appropriate limit to ensure adequate sensitivity in accordance with site procedures.

Ei = monitor efficiency for nuclide i, cpm per µCi/ml. This term may also be referred to as a response or calibration factor.

Ci = tank concentration of nuclide i, µCi/ml.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 72 of 205 6.2.2.2 Expected Response Setpoint An expected response setpoint SER is calculated for the monitor for each release:

S ER = X E C i

i i + X BKG (6.4) where:

X = administrative factors designed to account for expected variations in monitor response and background (as defined in plant procedures). The ranges of values are: 0< X 2.0.

6.2.2.3 Calculated Maximum Monitor Setpoint A second setpoint is calculated for the release based on the predicted response of the monitor to the gamma-emitting activity in the release stream if it were large enough to exceed ODCM Control 1.2.1.1 limits after dilution. This setpoint ensures that the release will be stopped if it exceeds this limit. The maximum calculated setpoint calculation must satisfy the following relationship from NUREG-0133:

sf C

(F + f )

where:

C = the effluent concentration limit from 10 CFR 20 Appendix B, Table 2, Column 2, in µCi/ml, represented by a value of 1.

s = the setpoint, in µCi/ml, of the monitor measuring the radioactivity concentration in the effluent line prior to dilution and subsequent release. The setpoint, which is proportional to the volumetric flow of the effluent line and inversely proportional to the volumetric flow of the dilution stream, represents a value which, if exceeded, would result in release concentrations exceeding the limits of ODCM Control 1.2.1.1 when the effluent enters the Tennessee River.

f = the flow rate of the waste stream, gpm.

F = the dilution flow rate, gpm.

To determine the setpoint in cpm, If no dilution is available, then s C.

Since C in the above equation represents the concentration equal to the limit, the setpoint s can be replaced by:

s = ca Dreq where ca = the actual effluent concentration, µCi/ml.

Dreq = the required dilution factor.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 73 of 205 The required dilution can be defined as:

R D req =

10 SF where:

R = the sum of the ratios for gamma-emitting radionuclides, as determined by equation 6.1.

10 = a value which implements the concentration limits of ODCM Control 1.2.1.1.

SF = a safety factor. The range of values for SF is: 0 < SF 1.

Substituting ca Dreq into the above equation for s, substituting 1 for C, and solving for ca:

10 SF (F + f) ca fR This value represents the amount that the expected response setpoint would be adjusted upward to account for the downstream dilution. For WBN, a portion of the total dilution flow is allocated to each release point using an allocation factor (AF). To determine the maximum calculated monitor setpoint, Smax, in cpm for a release point, the following equation is used:

10 SF(f + (AF x F))

Smax = (ER BKG ) + BKG (6.5) fR where:

AF = fraction of dilution flow allocated to this release point. For the TBS, AF = 0. The fractions for the remaining 4 release points are normally defined as the ratio of the allocated CTBD flow for that release point to the total CTBD flow. The CTBD flow allocation fractions for these release points are routinely:

Radwaste 0.6 Condensate demineralizer 0.2 Steam Generator Blowdown (U1) 0.1 Steam Generator Blowdown (U2) 0.1 These allocation factors may be adjusted for a particular release if it is known that there are no releases being made through other release points into the CTBD. For example, if there are no releases being made through the Condensate Demineralizer or either SGBD, the AF for the Radwaste System may be set equal to one.

ER = expected monitor response, cpm, as calculated in Equation 6.3.

BKG = background, cpm.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 74 of 205 6.3 CUMULATIVE LIQUID EFFLUENT DOSE CALCULATIONS Doses due to liquid effluents are calculated for each release for the following age groups: adult (17 years and older), teen (11-17 years), child (1-11 years), infant (0-1 years) (Reference 4); and the following organs: bone, liver, total body, thyroid, skin, kidney, lung, and GI tract.

Using the methodology presented in NUREG-0133, Section 4.3, doses due to liquid effluents are calculated for the ingestion of drinking water and freshwater fish consumption. Due to the amount of recreation along the Tennessee River, a dose for shoreline recreation is also calculated. This recreation dose is calculated by deriving a dose factor for use in the dose equation for the recreation pathway using equations A-4 and A-6 in Regulatory Guide 1.109. Dose factors for these three pathways are calculated as described in Section 6.7. For pathways with no age or organ specific dose factors (i.e., shoreline recreation), the total body dose will be added to the internal organ doses for all age groups. The consumption of freshwater invertebrates and consumption of food crops irrigated with Tennessee River water are not considered significant pathways for the area surrounding WBN (References 9 and 10), so they are not considered in the dose calculations.

The maximum individual dose from drinking water is assumed to be that calculated at the location immediately downstream from the diffuser. The maximum individual dose from fish ingestion is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the 100% mixing point downstream (Table 6.1). The maximum potential recreation dose is calculated for a location immediately downstream of the plant outfall.

The general equation for the dose to an organ j is:

D j = A ij T C i D (6.6) i where:

Aij = the total dose factor to the total body or any organ j for nuclide i, mrem/h per µCi/ml. The total dose factor is the sum of the dose factors for water ingestion, fish ingestion, and shoreline recreation, as defined in Section 6.7.

T = the length of time period over which the concentrations and the flows are averaged, h.

Ci = the average concentration of radionuclide i, in undiluted liquid effluent during the time period T from any liquid release, µCi/ml.

D = the near field average dilution factor for Ci during any effluent release. D is calculated by the following equation:

f

= (6.7) 0.10 x RF where:

f = maximum undiluted liquid waste flow during the release, cfs. For TBS releases, this term is the waste flow into the pond.

0.10 = mixing fraction of effluent in river, defined as the fraction of the riverflow which is available for dilution of the release (Reference 11).

RF = default riverflow, cfs. For each release, this value is set to 25,657 cfs (the average quarterly riverflow recorded from the period 1985-94).

From the four age groups considered, the maximum organ dose is determined by comparing all organ doses for all age groups. The age group with the highest single organ dose is selected as the critical age group. The total body and maximum organ doses for the critical age group are used in the calculation of the cumulative doses described in Section 6.3.1.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 75 of 205 6.3.1 Cumulative Doses Cumulative quarterly and annual sums of all doses are determined for each release to compare to the limits given in ODCM Control 1.2.1.2. These quarterly and annual sums will be the sum of the doses for each release which occurred in that quarter or year. These doses will be used in the comparison to the limits.

6.3.2 Comparison to Limits The cumulative calendar quarter and calendar year doses are compared to the limits in ODCM Control 1.2.1.2 at least once per 31 days to determine compliance.

6.4 LIQUID WASTE TREATMENT SYSTEM The LRTS described in the WBN FSAR shall be maintained and operated to keep releases ALARA.

A flow diagram for the LRTS is given in Figure 6.2.

6.5 DOSE PROJECTIONS In accordance with ODCM Surveillance Requirements 2.2.1.3.1 and 2.2.1.3.2, dose projections will be performed at least once per 31 days using the equation below:

(a + b )

D= x 31 + c (6.8) d where:

D = the 31-day dose projection, mrem.

a = the cumulative dose for the quarter, mrem.

b = the projected dose for this release, mrem.

c = any anticipated additional dose in the next month from other sources, mrem.

d = current number of days into the quarter up to the time of the release under consideration.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 76 of 205 6.6 DOSE CALCULATIONS FOR REPORTING A complete dose analysis utilizing the total estimated liquid releases for each calendar quarter will be performed and reported as required in ODCM Administrative Control 5.2. Methodology for this analysis is based on the methodology presented in Regulatory Guide 1.109 and is described in this section. The releases are assumed, for this calculation, to be continuous over the 90 day period.

The near-field dilution factor, DNF, used for the quarterly calculations is:

1 D NF = (for receptors upstream of Tennessee River Mile 510.0) (6.9) 0.10 RF and 1

D NF = (for receptors downstream of Tennessee River Mile 510.0) (6.10)

RF where:

RF = the average actual riverflow for the location at which the dose is being determined, cfs.

0.10 = the fraction of the riverflow available for dilution in the near field, dimensionless (Reference 11).

Note: TRM 510.0 is the point at which the effluent is considered to be fully mixed with the riverflow (Reference 11).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 77 of 205 6.6.1 Water Ingestion Water ingestion doses are calculated for each water supply identified within a 50 mile radius downstream of WBN (Table 6.1). The water ingestion dose equation is based on Regulatory Guide 1.109, Equation 1:

U ap M p D = k q i A Wai exp(- i t d )

F i For WBN, the dilution factor (Mp/F) is replaced by the near field dilution factor (DNF) described by Equations 6.9 and 6.10, and the usage factor (Uap) and dose conversion factors (AWai) are incorporated into the dose factor (as described in Section 6.7.1). The resulting equation for the water ingestion dose, Dj, in mrem, to organ j is:

D j = 106 (9.80 E- 09 ) AWaij q i D NF exp(- 8.64E04 i t d ) (6.11) i where:

106 = conversion factor, µCi/Ci.

9.80E-09 = conversion factor, cfs per ml/h.

AWaij = dose factor for water ingestion for age group a, nuclide i, and organ j, mrem/h per µCi/ml, as calculated in Section 6.7.1.

qi = quantity of nuclide i released during the quarter, Ci.

D NF = dilution factor, as described above, cfs-1.

i = radiological decay constant of nuclide i, s-1 (Table 6.2).

td = decay time for water ingestion, equal to the travel time from the plant to the water supply plus one day to account for the time of processing at the water supply (per Regulatory Guide 1.109), d.

8.64E+04 = conversion factor, s/d.

6.6.2 Fish Ingestion Fish ingestion doses are calculated for each identified reach within a 50 mile radius downstream of WBN (Table 6.1). The fish ingestion dose equation is based on Regulatory Guide 1.109, Equation 2:

UapMp D = k q i B i AFaij exp( - i td )

F i For WBN, the dilution factor (Mp/F) is replaced by the near field dilution factor (DNF) described by Equations 6.9 and 6.10, and the usage factor (Uap), bioaccumulation factor (Bi), and dose conversion factors (AFaij) are incorporated into the dose factor (as described in Section 6.7.2). The resulting equation for the fish ingestion dose Dj, in mrem, to organ j is:

D j = 106 (9.80 E- 09) A Faij q i D NF exp(-8.64E04 i t d ) (6.12) i where:

106 = conversion factor, µCi/Ci.

9.80E-09 = conversion factor, cfs per ml/h.

AFaij = dose factor for fish ingestion for nuclide i, age group a, organ j, mrem/h per µCi/ml, as calculated in Section 6.7.2.

qi = quantity of nuclide i released during the quarter, Ci.

D NF = dilution factor, as described above, cfs-1.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 78 of 205 i = radiological decay constant of nuclide i, s-1 (Table 6.2).

td = decay time for fish ingestion, equal to the travel time from the plant to the center of the reach plus one day to account for transit through the food chain and food preparation time (per Regulatory Guide 1.109), d.

8.64E+04 = conversion factor, s/d.

6.6.3 Shoreline Recreation Recreation doses are calculated for each identified reach within a 50 mile radius downstream of WBN (Table 6.1). It is assumed that the maximum exposed individual spends 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year on the shoreline at a location immediately downstream from the diffusers. This is a more conservative usage factor than that provided in Regulatory Guide 1.109. It assumes that an individual visits the shoreline for an average of 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months per week for 50 weeks per year. The shoreline recreation dose equation is based on Regulatory Guide 1.109, Equation 3:

For WBN, the dilution factor Mp/F is replaced by the near field dilution factor (DNF) described by Equations 6.9 and 6.10, and the usage factor (Uap), shoreline width factor (SWF), radioactive half-life (Ti),

dose conversion factor (ARaij) and the second exponential term are incorporated into the dose factor (as described in Section 6.7.3). The resulting equation for the shoreline recreation dose Dj, in mrem, to organ j is:

D j = 106 (9.80 E- 09) A Raij q i D NF exp(-8.64 E 04 i t d ) (6.13) i where:

106 = conversion factor, µCi/Ci.

9.80E-09 = conversion factor, cfs per ml/h.

ARaij = dose factor for shoreline recreation for nuclide i, age group a, organ j, mrem/h per µCi/ml, as calculated in Section 6.7.3.

qi = quantity of nuclide i released during the quarter, Ci.

D NF = dilution factor, as described above, cfs-1 i = radiological decay constant of nuclide i, s-1 (Table 6.2).

td = decay time for recreation, equal to the travel time from the plant to the center of the reach, d.

8.64E+04 = conversion factor, s/d.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 79 of 205 6.6.4 Total Maximum Individual Dose The total maximum individual quarterly total body dose for each age group a, D(tb)a, is obtained using the following equation:

D(tb)a = DW + DF + DR (6.14) where:

DW = the highest total body water ingestion dose for age group a from among all the public water supplies DF = the highest total body fish ingestion dose for age group a from among all the reaches DR = the total body maximum shoreline recreation dose.

The total maximum individual quarterly organ dose for each age group a and each organ j, D(org)aj, is obtained using the following equation:

D(org)aj = DW + DF + DR (6.15) where:

DW = the highest water ingestion dose for age group a and organ j from among all the public water supplies DF = the highest fish ingestion dose for age group a and organ j from among all the reaches DR = the maximum shoreline recreation dose for organ j. The total body dose is used for all organs except skin.

The doses reported are the highest total body dose (selected from all age groups) and the highest maximum organ dose (selected from all remaining organs and all age groups).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 80 of 205 6.6.5 Population Doses For determining population doses to the 50-mile population around the plant, an average dose is calculated for each age group and each pathway and then multiplied by the population and the fraction of the population in each age group. The population dose is determined using equation D-1 from Regulatory Guide 1.109:

D = k POPm D jma fPa m a For WBN, the average individual doses (Djma) are determined by obtaining the ratio of the average consumption rate to the maximum consumption rate and multiplying this by the maximum individual dose.

For water ingestion, the general equation used for calculating the population doses, POPWTR, in person-rem for a given Public Water Supply (PWS) is:

4 4 POPWTR j = 10 3 POPm fPa ATMWa TWDOSamj (6.16) m =1 a =1 where:

POPWTRj = water ingestion population dose to organ j, person-rem.

fPa = fraction of population in each age group a (from NUREG CR-1004, table 3.39).

Adult = 0.665 Child = 0.167 Infant = 0.015 Teen = 0.153 POPm = population at PWS m. The 4 PWSs and their populations are listed in Table 6.1.

ATMWa = ratio of average to maximum water ingestion rates for each age group a. The values for maximum water ingestion rates are given as Uwa in Table 6.3. Average water ingestion rates, in L/y, (from Reference 4, Table E-4) are:

Adult = 370 Child = 260 Infant = 260 Teen = 260 TWDOSamj = total individual water ingestion dose to organ j at PWS m, to the age group a (calculated as described in Section 6.6.1), mrem.

10 - 3

= conversion factor for rem/mrem.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 81 of 205 For population doses resulting from fish ingestion the calculation assumes that all fish caught within a 50-mile radius downstream of WBN are consumed by local population. The total fish harvest is calculated by multiplying the average fish harvest for the Tennessee River (HVST) by the size of the river reach under consideration (APR). These terms replace POPm. The general equation for calculating population doses, POPF, in person-rem from fish ingestion of all fish caught within a 50-mile radius downstream is:

4 4 TFDOSarj fPa POPFj = 10 310 3 453.6 HVST APR r =1 a =1 FISHa fPa (6.17) where:

POPFj = total fish ingestion population dose to organ j, person-rem.

HVST = fish harvest for the Tennessee River, 3.77 lbs/acre/y edible weight (Reference 12).

APR = size of reach, acres (Table 6.1).

TFDOSarj = total fish ingestion dose to organ j for reach r, for the age group a, (calculated as described in Section 6.6.2), mrem.

fPa = fraction of population in each age group a, as given above.

FISHa = amount of fish ingested by each age group a, kg/y. Average fish ingestion rates, kg/y (Reference 4, Table E-4) are:

Adult = 6.9 Child = 2.2 Teen = 5.2 Infant = 0.0 453.6 = conversion factor, g/lb.

10-3 = conversion factor, rem/mrem.

10-3 = conversion factor, kg/g.

For shoreline recreation, the total recreation dose is determined by multiplying the average dose rate (TSHDOS) to an individual by the number of visits to that river reach (SHVIS) and the length of the average visit (HRSVIS). The general equation used for calculating the population doses, POPR, in person-rem is:

1 4 POPR j =

103 8760 r =1 TSHDOSrj SHVISr HRSVISr (6.18) where:

POPRj = total recreation population dose for all reaches to organ j, person-rem.

TSHDOSrj = total shoreline dose rate for organ j, in reach r, mrem/h.

SHVISr = shoreline visits per year at each reach r, (Table 6.1).

HRSVISr = length of average shoreline recreation visit at reach r, 5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

103 = conversion factor, mrem/rem.

8760 = conversion factor, h/y.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 82 of 205 6.7 LIQUID DOSE FACTOR EQUATIONS The general form of the liquid dose factor equation from NUREG-0133 is:

U A ij = k 0 w + U F BFi + U I BFi DFi Dw where:

k0 = conversion factors.

UW = water consumption rate, L/y.

DW = dilution factor from the near field area within one-quarter mile of the release point to the potable water intake for water consumption, dimensionless.

UF = fish consumption rate, kg/y.

BFi = bioaccumulation factor for nuclide i in freshwater fish, pCi/kg per pCi/L.

UI = invertebrate consumption rate, kg/y.

DFi = ingestion dose conversion factor, mrem/pCi.

Since the value of the term UI is negligible, WBN will not be considering the dose from invertebrate ingestion and that portion of the equation is dropped. In addition, a term is added to account for recreation. The near-field dilution factor is assigned a value of 1 in the water ingestion portion of the equation and is not used for WBN due to the use of riverflow as the dilution factor in the dose calculation.

The resulting general dose factor equation is:

A ij = k 0 (U W + U F BFi ) DFi + k 1 U R C s DFG i where:

k0,1 = conversion factors.

UR = recreation usage factor, h/y.

Cs = accumulation factor for buildup of activity in sediment, pCi/m2 per pCi/L.

DFGi = dose factor for standing on contaminated ground, mrem/h per pCi/m2.

The equations for each of the individual pathway dose factors are presented in the following sections.

6.7.1 Water Ingestion Dose Factor - AWaij (mrem/h per µCi/ml) 106103 DFaij U wa A Waij = (6.19) 8760 where:

DFaij = ingestion dose conversion factor for nuclide i, age a, organ j, mrem/pCi, (Table 6.4).

Uwa = water consumption rate for age group a, L/y, (Table 6.3).

106 = conversion factor, pCi/µCi.

103 = conversion factor, ml/L.

8760 = conversion factor, h/y.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 83 of 205 6.7.2 Fish Ingestion Dose Factor - AFaij (mrem/h per µCi/ml) 106103 DFaij U fa Bi A Faij = (6.20) 8760 where:

DFaij = ingestion dose conversion factor for nuclide i, age a, organ j, mrem/pCi, (Table 6.4).

Ufa = fish consumption rate for age group a, kg/y, (Table 6.3).

Bi = bioaccumulation factor for nuclide i, pCi/kg per pCi/L, (Table 6.5).

106 = conversion factor, pCi/µCi.

103 = conversion factor, ml/L.

8760 = conversion factor, h/y.

6.7.3 Shoreline Recreation Dose Factor - ARaij (mrem/h per µCi/ml)

Equation A-6 in Regulatory Guide 1.109 provides a methodology for calculating the dose due to shoreline recreation along a water body:

Dose = k K c U SWF C iW Ti DFG ij [1 - exp(- i t b ) ]

i Since the terms CiW and T are part of the dose equation (Equation 6.6), the equation for the dose factor becomes:

A Raij =

(

10 310 6 DFG ij K c M SWF U R ) [1 exp( t ) ] (6.21) i b 8760 3600 i where:

DFGij = dose conversion factor for standing on contaminated ground for nuclide i and organ j (total body and skin), mrem/h per pCi/m2, (Table 6.6).

Kc = transfer coefficient from water to shoreline sediment, L/kg-h, (Table 6.3).

M = mass density of sediment, kg/m2, (Table 6.3).

SWF = shoreline width factor, dimensionless, (Table 6.3).

103 = conversion factor, ml/L.

106 = conversion factor, pCi/µCi.

3600 = conversion factor, s/h.

i = decay constant for nuclide i, s-1, (Table 6.2).

tb = time shoreline is exposed to the concentration of the water, s, (Table 6.3).

UR = recreation usage factor, 500 h/y.

8760 = conversion factor, h/y.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 84 of 205 Table 6.1 - RECEPTORS FOR LIQUID DOSE CALCULATIONS Tennessee River Reaches Within 50 Mile Radius Downstream of WBN Beginning Ending Size1 Recreation2 Name TRM TRM (acres) visits/y Chickamauga Lake (from WBN to 528 5103 4799 120,986 100% mixing point)

Chickamauga Lake (from 100% mixing 5103 484 22101 1,297,880 point to Sequoyah Nuclear Plant)

Chickamauga Lake (from Sequoyah 484 471 9889 7,421,905 Nuclear Plant to Chickamauga Dam)

Nickajack Lake (from Chickamauga 471 460 1799 284,000 Dam to WBN 50-mile radius)

TRM - Tennessee River Mile.

1 Reference 13.

2 Reference 14.

3 100% Mixing Point (Reference 11).

Public Water Supplies Within 50 Mile Radius Downstream of WBN Name TRM Estimated 2040 Population Dayton, TN 504 19,170 Soddy-Daisy/Falling 487 11,452 Water Utility District East Side Utility, TN 473 49,700 Chattanooga, TN 465 237,048 NOTE: Tennessee river mile locations are rounded to the nearest mile for dose calculation purposes.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 85 of 205 Table 6.2 - RADIONUCLIDE DECAY AND STABLE ELEMENT TRANSFER DATA (Page 1 of 3)

Half-Life Biv Fmi Fmi Ffi Nuclide (minutes) (s-1) (cow) (goat) (beef)

H-3 6.46E+06 1.79E-09 4.80E+00 1.00E-02 1.70E-01 1.20E-02 C-14 3.01E+09 3.84E-12 5.50E+00 1.20E-02 1.00E-01 3.10E-02 Na-24 9.00E+02 1.28E-05 5.20E-02 4.00E-02 4.00E-02 3.00E-02 P-32 2.06E+04 5.61E-07 1.10E+00 2.50E-02 2.50E-01 4.60E-02 Cr-51 3.99E+04 2.90E-07 2.50E-04 2.20E-03 2.20E-03 2.40E-03 Mn-54 4.50E+05 2.57E-08 2.90E-02 2.50E-04 2.50E-04 8.00E-04 Mn-56 1.55E+02 7.45E-05 2.90E-02 2.50E-04 2.50E-04 8.00E-04 Fe-55 1.42E+06 8.13E-09 6.60E-04 1.20E-03 1.30E-04 1.20E-02 Fe-59 6.43E+04 1.80E-07 6.60E-04 1.20E-03 1.30E-04 1.20E-02 Co-57 3.90E+05 2.96E-08 9.40E-03 1.00E-03 1.00E-03 1.30E-02 Co-58 1.02E+05 1.13E-07 9.40E-03 1.00E-03 1.00E-03 1.30E-02 Co-60 2.77E+06 4.17E-09 9.40E-03 1.00E-03 1.00E-03 1.30E-02 Ni-63 5.27E+07 2.19E-10 1.90E-02 6.70E-03 6.70E-03 5.30E-02 Ni-65 1.51E+02 7.65E-05 1.90E-02 6.70E-03 6.70E-03 5.30E-02 Cu-64 7.62E+02 1.52E-05 1.20E-01 1.40E-02 1.30E-02 9.70E-04 Zn-65 3.52E+05 3.28E-08 4.00E-01 3.90E-02 3.90E-02 3.00E-02 Zn-69m 8.26E+02 1.40E-05 4.00E-01 3.90E-02 3.90E-02 3.00E-02 Zn-69 5.56E+01 2.08E-04 4.00E-01 3.90E-02 3.90E-02 3.00E-02 Br-82 2.12E+03 5.45E-06 7.60E-01 5.00E-02 5.00E-02 2.60E-02 Br-83 1.43E+02 8.08E-05 7.60E-01 5.00E-02 5.00E-02 2.60E-02 Br-84 3.18E+01 3.63E-04 7.60E-01 5.00E-02 5.00E-02 2.60E-02 Br-85 2.87E+00 4.02E-03 7.60E-01 5.00E-02 5.00E-02 2.60E-02 Rb-86 2.69E+04 4.29E-07 1.30E-01 3.00E-02 3.00E-02 3.10E-02 Rb-88 1.78E+01 6.49E-04 1.30E-01 3.00E-02 3.00E-02 3.10E-02 Rb-89 1.54E+01 7.50E-04 1.30E-01 3.00E-02 3.00E-02 3.10E-02 Sr-89 7.28E+04 1.59E-07 1.70E-02 1.40E-03 1.40E-02 6.00E-04 Sr-90 1.50E+07 7.70E-10 1.70E-02 1.40E-03 1.40E-02 6.00E-04 Sr-91 5.70E+02 2.03E-05 1.70E-02 1.40E-03 1.40E-02 6.00E-04 Sr-92 1.63E+02 7.09E-05 1.70E-02 1.40E-03 1.40E-02 6.00E-04 Y-90 3.85E+03 3.00E-06 2.60E-03 1.00E-05 1.00E-05 4.60E-03 Y-91m 4.97E+01 2.32E-04 2.60E-03 1.00E-05 1.00E-05 4.60E-03 Y-91 8.43E+04 1.37E-07 2.60E-03 1.00E-05 1.00E-05 4.60E-03 Y-92 2.12E+02 5.45E-05 2.60E-03 1.00E-05 1.00E-05 4.60E-03 Y-93 6.06E+02 1.91E-05 2.60E-03 1.00E-05 1.00E-05 4.60E-03 Zr-95 9.22E+04 1.25E-07 1.70E-04 5.00E-06 5.00E-06 3.40E-02 Zr-97 1.01E+03 1.14E-05 1.70E-04 5.00E-06 5.00E-06 3.40E-02 Nb-95 5.05E+04 2.29E-07 9.40E-03 2.50E-03 2.50E-03 2.80E-01 Nb-97 7.21E+01 1.60E-04 9.40E-03 2.50E-03 2.50E-03 2.80E-01 Mo-99 3.96E+03 2.92E-06 1.20E-01 7.50E-03 7.50E-03 1.10E-03 Tc-99m 3.61E+02 3.20E-05 2.50E-01 2.50E-02 2.50E-02 4.00E-01 Tc-101 1.42E+01 8.13E-04 2.50E-01 2.50E-02 2.50E-02 4.00E-01 Ru-103 5.67E+04 2.04E-07 5.00E-02 1.00E-06 1.00E-06 4.00E-01 WBL-23-19 E2-87 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 86 of 205 Table 6.2 - RADIONUCLIDE DECAY AND STABLE ELEMENT TRANSFER DATA (Page 2 of 3)

Half-Life Biv Fmi Fmi Ffi Nuclide (minutes) (s-1) (cow) (goat) (beef)

Ru-105 2.66E+02 4.34E-05 5.00E-02 1.00E-06 1.00E-06 4.00E-01 Ru-106 5.30E+05 2.18E-08 5.00E-02 1.00E-06 1.00E-06 4.00E-01 Ag-110m 3.60E+05 3.21E-08 1.50E-01 5.00E-02 5.00E-02 1.70E-02 Sb-124 8.67E+04 1.33E-07 N/A 1.50E-03 1.50E-03 N/A Sb-125 1.46E+06 7.91E-09 N/A 1.50E-03 1.50E-03 N/A Te-125m 8.35E+04 1.38E-07 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-127m 1.57E+05 7.36E-08 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-127 5.61E+02 2.06E-05 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-129m 4.84E+04 2.39E-07 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-129 6.96E+01 1.66E-04 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-131m 1.80E+03 6.42E-06 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-131 2.50E+01 4.62E-04 1.30E+00 1.00E-03 1.00E-03 7.70E-02 Te-132 4.69E+03 2.46E-06 1.30E+00 1.00E-03 1.00E-03 7.70E-02 I-130 7.42E+02 1.56E-05 2.00E-02 1.20E-02 4.30E-01 2.90E-03 I-131 1.16E+04 9.96E-07 2.00E-02 1.20E-02 4.30E-01 2.90E-03 I-132 1.38E+02 8.37E-05 2.00E-02 1.20E-02 4.30E-01 2.90E-03 I-133 1.25E+03 9.24E-06 2.00E-02 1.20E-02 4.30E-01 2.90E-03 I-134 5.26E+01 2.20E-04 2.00E-02 1.20E-02 4.30E-01 2.90E-03 I-135 3.97E+02 2.91E-05 2.00E-02 1.20E-02 4.30E-01 2.90E-03 Cs-134 1.08E+06 1.06E-08 1.00E-02 8.00E-03 3.00E-01 1.50E-02 Cs-136 1.90E+04 6.08E-07 1.00E-02 8.00E-03 3.00E-01 1.50E-02 Cs-137 1.59E+07 7.26E-10 1.00E-02 8.00E-03 3.00E-01 1.50E-02 Cs-138 3.22E+01 3.59E-04 1.00E-02 8.00E-03 3.00E-01 1.50E-02 Ba-139 8.31E+01 1.39E-04 5.00E-03 4.00E-04 4.00E-04 3.20E-03 Ba-140 1.84E+04 6.28E-07 5.00E-03 4.00E-04 4.00E-04 3.20E-03 Ba-141 1.83E+01 6.31E-04 5.00E-03 4.00E-04 4.00E-04 3.20E-03 Ba-142 1.07E+01 1.08E-03 5.00E-03 4.00E-04 4.00E-04 3.20E-03 La-140 2.41E+03 4.79E-06 2.50E-03 5.00E-06 5.00E-06 2.00E-04 La-142 9.54E+01 1.21E-04 2.50E-03 5.00E-06 5.00E-06 2.00E-04 Ce-141 4.68E+04 2.47E-07 2.50E-03 1.00E-04 1.00E-04 1.20E-03 Ce-143 1.98E+03 5.83E-06 2.50E-03 1.00E-04 1.00E-04 1.20E-03 Ce-144 4.09E+05 2.82E-08 2.50E-03 1.00E-04 1.00E-04 1.20E-03 Pr-143 1.95E+04 5.92E-07 2.50E-03 5.00E-06 5.00E-06 4.70E-03 Pr-144 1.73E+01 6.68E-04 2.50E-03 5.00E-06 5.00E-06 4.70E-03 Nd-147 1.58E+04 7.31E-07 2.40E-03 5.00E-06 5.00E-06 3.30E-03 W-187 1.43E+03 8.08E-06 1.80E-02 5.00E-04 5.00E-04 1.30E-03 Np-239 3.39E+03 3.41E-06 2.50E-03 5.00E-06 5.00E-06 2.00E-04 Ar-41 1.10E+02 1.05E-04 N/A N/A N/A N/A Kr-83m 1.10E+02 1.05E-04 N/A N/A N/A N/A Kr-85m 2.69E+02 4.29E-05 N/A N/A N/A N/A Kr-85 5.64E+06 2.05E-09 N/A N/A N/A N/A Kr-87 7.63E+01 1.51E-04 N/A N/A N/A N/A WBL-23-19 E2-88 of 207

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Half-Life Biv Fmi Fmi Ffi Nuclide (minutes) (s-1) (cow) (goat) (beef)

Kr-88 1.70E+02 6.79E-05 N/A N/A N/A N/A Kr-89 3.16E+00 3.66E-03 N/A N/A N/A N/A Kr-90 5.39E-01 2.14E-02 N/A N/A N/A N/A Xe-131m 1.70E+04 6.79E-07 N/A N/A N/A N/A Xe-133m 3.15E+03 3.67E-06 N/A N/A N/A N/A Xe-133 7.55E+03 1.53E-06 N/A N/A N/A N/A Xe-135m 1.54E+01 7.50E-04 N/A N/A N/A N/A Xe-135 5.47E+02 2.11E-05 N/A N/A N/A N/A Xe-137 3.83E+00 3.02E-03 N/A N/A N/A N/A Xe-138 1.41E+01 8.19E-04 N/A N/A N/A N/A

References:

All nuclides half-lives from: Reference 15.

Transfer factors for Sb- isotopes: Reference 16 Table 2-7.

Cow-milk transfer factors for I, Sr, and Cs nuclides are from Reference 21, Table 3.17.

Goat-milk transfer factors for I nuclides are from Reference 21, Table 3.17.

Beef transfer factors for Fe, Cu, Mo, and Cs nuclides are from Reference 21, Table 3.18.

All other nuclides transfer factors are from Reference 4, Tables E-1 and E-2.

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Factor Value Units Reference BRa (infant) 1400 m3/y Reference 20 BRa (child) 5500 m3/y Reference 20 BRa (teen) 8000 m3/y Reference 20 BRa (adult) 8100 m3/y Reference 20 fg 1 Conservatively assumes all stored vegetables are grown locally.

fL 1 Reference 4 (Table E-15) fp 1 See Note fs 0 See Note H 9 g/m3 TVA Value Kc 0.072 L/kg-h Reference 4 (Section 2.C.)

M 40 kg/m2 Reference 4 (Section 2.C.)

P 240 kg/m2 Reference 4 (Table E-15)

Qf (cow) 64 kg/day Reference 21 (Sect. 3.4)

Qf (goat) 08 kg/day Reference 21 (Sect. 3.4) r 0.47 Reference 21 (Sect. 3.2) tb 4.73E+08 (15 y) s Reference 4 (Table E-15) tcb 7.78E+06 (90 d) s Reference 10, Section 11.3.10.1 tcsf 1.56E+07 (180 d) s Reference 10, Section 11.3.10.1 te 5.18E+06 (60 d) s Reference 4 (Table E-15) tep 2.59E+06 (30 d) s Reference 4 (Table E-15) tesf 7.78E+06 (90 d) s Reference 4 (Table E-15) tfm 8.64E+04 (1 d) s Reference 10, Section 11.3.10.1 thc 8.64E+04 (1 d) s Reference 21, Table 3.40 ts 1.12E+06(13 d) s Reference 21, Table 3.40 tsv 2.38E+07(275 d) s Reference 10, Section 11.3.10.1 Uam (infant) 0 kg/y Reference 4 (Table E-5)

Uam (child) 41 kg/y Reference 4 (Table E-5)

Uam (teen) 65 kg/y Reference 4 (Table E-5)

Uam (adult) 110 kg/y Reference 4 (Table E-5)

Note: Calculations for release permits use the conservative value given in the table for these parameters.

The calculations performed for reporting purposes (as described in Section 7.7) use actual grazing percentages identified in the land use census.

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Factor Value Units Reference Uap (infant) 330 L/y Reference 4 (Table E-5)

Uap (child) 330 L/y Reference 4 (Table E-5)

Uap (teen) 400 L/y Reference 4 (Table E-5)

Uap (adult) 310 L/y Reference 4 (Table E-5)

Ufa(infant) 0 kg/y Reference 4 (Table E-5)

Ufa(child) 6.9 kg/y Reference 4 (Table E-5)

Ufa(teen) 16 kg/y Reference 4 (Table E-5)

Ufa(adult) 21 kg/y Reference 4 (Table E-5)

UFLa (infant) 0 kg/y Reference 4 (Table E-5)

UFLa (child) 26 kg/y Reference 4 (Table E-5)

UFLa (teen) 42 kg/y Reference 4 (Table E-5)

UFLa (adult) 64 kg/y Reference 4 (Table E-5)

USa (infant) 0 kg/y Reference 4 (Table E-5)

USa (child) 520 kg/y Reference 4 (Table E-5)

USa (teen) 630 kg/y Reference 4 (Table E-5)

USa (adult) 520 kg/y Reference 4 (Table E-5)

UWa(infant) 330 L/y Reference 4 (Table E-5)

UWa(child) 510 L/y Reference 4 (Table E-5)

UWa(teen) 510 L/y Reference 4 (Table E-5)

UWa(adult) 730 L/y Reference 4 (Table E-5)

SWF 0.2 none Reference 4 (Table A-2)

Yf 1.85 kg/m2 Reference 21 (Table 3.4)

Yp 1.18 kg/m2 Reference 21 (Table 3.3)

Ysf 0.64 kg/m2 Reference 21 (Table 3.3)

Ysv 0.57 kg/m2 Reference 21 (Table 3.4)

(value selected is for non-leafy vegetables)

W (iodines) 7.71E-07 s-1 Reference 21 (Table 3.10)

(15.4 d half-life)

W (particulates) 5.21E-07 s-1 Reference 21 (Table 3.10)

(10.4 d half-life)

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ADULT Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 C-14 2.84E-06 5.68E-07 5.68E-07 5.68E-07 5.68E-07 5.68E-07 5.68E-07 Na-24 1.70E-06 1.70E-06 1.70E-06 1.70E-06 1.70E-06 1.70E-06 1.70E-06 P-32 1.93E-04 1.20E-05 7.46E-06 0.00E+00 0.00E+00 0.00E+00 2.17E-05 Cr-51 0.00E+00 0.00E+00 2.66E-09 1.59E-09 5.86E-10 3.53E-09 6.69E-07 Mn-54 0.00E+00 4.57E-06 8.72E-07 0.00E+00 1.36E-06 0.00E+00 1.40E-05 Mn-56 0.00E+00 1.15E-07 2.04E-08 0.00E+00 1.46E-07 0.00E+00 3.67E-06 Fe-55 2.75E-06 1.90E-06 4.43E-07 0.00E+00 0.00E+00 1.06E-06 1.09E-06 Fe-59 4.34E-06 1.02E-05 3.91E-06 0.00E+00 0.00E+00 2.85E-06 3.40E-05 Co-57 0.00E+00 1.75E-07 2.91E-07 0.00E+00 0.00E+00 0.00E+00 4.44E-06 Co-58 0.00E+00 7.45E-07 1.67E-06 0.00E+00 0.00E+00 0.00E+00 1.51E-05 Co-60 0.00E+00 2.14E-06 4.72E-06 0.00E+00 0.00E+00 0.00E+00 4.02E-05 Ni-63 1.30E-04 9.01E-06 4.36E-06 0.00E+00 0.00E+00 0.00E+00 1.88E-06 Ni-65 5.28E-07 6.86E-08 3.13E-08 0.00E+00 0.00E+00 0.00E+00 1.74E-06 Cu-64 0.00E+00 8.33E-08 3.91E-08 0.00E+00 2.10E-07 0.00E+00 7.10E-06 Zn-65 4.84E-06 1.54E-05 6.96E-06 0.00E+00 1.03E-05 0.00E+00 9.70E-06 Zn-69 1.03E-08 1.97E-08 1.37E-09 0.00E+00 1.28E-08 0.00E+00 2.96E-09 Zn-69m 1.70E-07 4.08E-07 3.73E-08 0.00E+00 2.47E-07 0.00E+00 2.49E-05 Br-82 0.00E+00 0.00E+00 2.26E-06 0.00E+00 0.00E+00 0.00E+00 2.59E-06 Br-83 0.00E+00 0.00E+00 4.02E-08 0.00E+00 0.00E+00 0.00E+00 5.79E-08 Br-84 0.00E+00 0.00E+00 5.21E-08 0.00E+00 0.00E+00 0.00E+00 4.09E-13 Br-85 0.00E+00 0.00E+00 2.14E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 2.11E-05 9.83E-06 0.00E+00 0.00E+00 0.00E+00 4.16E-06 Rb-88 0.00E+00 6.05E-08 3.21E-08 0.00E+00 0.00E+00 0.00E+00 8.36E-19 Rb-89 0.00E+00 4.01E-08 2.82E-08 0.00E+00 0.00E+00 0.00E+00 2.33E-21 Sr-89 3.08E-04 0.00E+00 8.84E-06 0.00E+00 0.00E+00 0.00E+00 4.94E-05 Sr-90 7.58E-03 0.00E+00 1.86E-03 0.00E+00 0.00E+00 0.00E+00 2.19E-04 Sr-91 5.67E-06 0.00E+00 2.29E-07 0.00E+00 0.00E+00 0.00E+00 2.70E-05 Sr-92 2.15E-06 0.00E+00 9.30E-08 0.00E+00 0.00E+00 0.00E+00 4.26E-05 Y-90 9.62E-09 0.00E+00 2.58E-10 0.00E+00 0.00E+00 0.00E+00 1.02E-04 Y-91m 9.09E-11 0.00E+00 3.52E-12 0.00E+00 0.00E+00 0.00E+00 2.67E-10 Y-91 1.41E-07 0.00E+00 3.77E-09 0.00E+00 0.00E+00 0.00E+00 7.76E-05 Y-92 8.45E-10 0.00E+00 2.47E-11 0.00E+00 0.00E+00 0.00E+00 1.48E-05 Y-93 2.68E-09 0.00E+00 7.40E-11 0.00E+00 0.00E+00 0.00E+00 8.50E-05 Zr-95 3.04E-08 9.75E-09 6.60E-09 0.00E+00 1.53E-08 0.00E+00 3.09E-05 Zr-97 1.68E-09 3.39E-10 1.55E-10 0.00E+00 5.12E-10 0.00E+00 1.05E-04 Nb-95 6.22E-09 3.46E-09 1.86E-09 0.00E+00 3.42E-09 0.00E+00 2.10E-05 Nb-97 5.22E-11 1.32E-11 4.82E-12 0.00E+00 1.54E-11 0.00E+00 4.87E-08 Mo-99 0.00E+00 4.31E-06 8.20E-07 0.00E+00 9.76E-06 0.00E+00 9.99E-06 Tc-99m 2.47E-10 6.98E-10 8.89E-09 0.00E+00 1.06E-08 3.42E-10 4.13E-07 Tc-101 2.54E-10 3.66E-10 3.59E-09 0.00E+00 6.59E-09 1.87E-10 1.10E-21 Ru-103 1.85E-07 0.00E+00 7.97E-08 0.00E+00 7.06E-07 0.00E+00 2.16E-05 Ru-105 1.54E-08 0.00E+00 6.08E-09 0.00E+00 1.99E-07 0.00E+00 9.42E-06 Ru-106 2.75E-06 0.00E+00 3.48E-07 0.00E+00 5.31E-06 0.00E+00 1.78E-04 WBL-23-19 E2-92 of 207

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ADULT Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 1.60E-07 1.48E-07 8.79E-08 0.00E+00 2.91E-07 0.00E+00 6.04E-05 Sb-124 2.80E-06 5.29E-08 1.11E-06 6.79E-09 0.00E-00 2.18E-06 7.95E-05 Sb-125 1.79E-06 2.00E-08 4.26E-07 1.82E-09 0.00E-00 1.38E-06 1.97E-05 Te-125m 2.68E-06 9.71E-07 3.59E-07 8.06E-07 1.09E-05 0.00E+00 1.07E-05 Te-127m 6.77E-06 2.42E-06 8.25E-07 1.73E-06 2.75E-05 0.00E+00 2.27E-05 Te-127 1.10E-07 3.95E-08 2.38E-08 8.15E-08 4.48E-07 0.00E+00 8.68E-06 Te-129m 1.15E-05 4.29E-06 1.82E-06 3.95E-06 4.80E-05 0.00E+00 5.79E-05 Te-129 3.14E-08 1.18E-08 7.65E-09 2.41E-08 1.32E-07 0.00E+00 2.37E-08 Te-131m 1.73E-06 8.46E-07 7.05E-07 1.34E-06 8.57E-06 0.00E+00 8.40E-05 Te-131 1.97E-08 8.23E-09 6.22E-09 1.62E-08 8.63E-08 0.00E+00 2.79E-09 Te-132 2.52E-06 1.63E-06 1.53E-06 1.80E-06 1.57E-05 0.00E+00 7.71E-05 I-130 7.56E-07 2.23E-06 8.80E-07 1.89E-04 3.48E-06 0.00E+00 1.92E-06 I-131 4.16E-06 5.95E-06 3.41E-06 1.95E-03 1.02E-05 0.00E+00 1.57E-06 I-132 2.03E-07 5.43E-07 1.90E-07 1.90E-05 8.65E-07 0.00E+00 1.02E-07 I-133 1.42E-06 2.47E-06 7.53E-07 3.63E-04 4.31E-06 0.00E+00 2.22E-06 I-134 1.06E-07 2.88E-07 1.03E-07 4.99E-06 4.58E-07 0.00E+00 2.51E-10 I-135 4.43E-07 1.16E-06 4.28E-07 7.65E-05 1.86E-06 0.00E+00 1.31E-06 Cs-134 6.22E-05 1.48E-04 1.21E-04 0.00E+00 4.79E-05 1.59E-05 2.59E-06 Cs-136 6.51E-06 2.57E-05 1.85E-05 0.00E+00 1.43E-05 1.96E-06 2.92E-06 Cs-137 7.97E-05 1.09E-04 7.14E-05 0.00E+00 3.70E-05 1.23E-05 2.11E-06 Cs-138 5.52E-08 1.09E-07 5.40E-08 0.00E+00 8.01E-08 7.91E-09 4.65E-13 Ba-139 9.70E-08 6.91E-11 2.84E-09 0.00E+00 6.46E-11 3.92E-11 1.72E-07 Ba-140 2.03E-05 2.55E-08 1.33E-06 0.00E+00 8.67E-09 1.46E-08 4.18E-05 Ba-141 4.71E-08 3.56E-11 1.59E-09 0.00E+00 3.31E-11 2.02E-11 2.22E-17 Ba-142 2.13E-08 2.19E-11 1.34E-09 0.00E+00 1.85E-11 1.24E-11 3.00E-26 La-140 2.50E-09 1.26E-09 3.33E-10 0.00E+00 0.00E+00 0.00E+00 9.25E-05 La-142 1.28E-10 5.82E-11 1.45E-11 0.00E+00 0.00E+00 0.00E+00 4.25E-07 Ce-141 9.36E-09 6.33E-09 7.18E-10 0.00E+00 2.94E-09 0.00E+00 2.42E-05 Ce-143 1.65E-09 1.22E-06 1.35E-10 0.00E+00 5.37E-10 0.00E+00 4.56E-05 Ce-144 4.88E-07 2.04E-07 2.62E-08 0.00E+00 1.21E-07 0.00E+00 1.65E-04 Pr-143 9.20E-09 3.69E-09 4.56E-10 0.00E+00 2.13E-09 0.00E+00 4.03E-05 Pr-144 3.01E-11 1.25E-11 1.53E-12 0.00E+00 7.05E-12 0.00E+00 4.33E-18 Nd-147 6.29E-09 7.27E-09 4.35E-10 0.00E+00 4.25E-09 0.00E+00 3.49E-05 W-187 1.03E-07 8.61E-08 3.01E-08 0.00E+00 0.00E+00 0.00E+00 2.82E-05 Np-239 1.19E-09 1.17E-10 6.45E-11 0.00E+00 3.65E-10 0.00E+00 2.40E-05

References:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125 are from Reference 17, Table 4.

All others are from Reference 4, Table E-11.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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TEEN Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 C-14 4.06E-06 8.12E-07 8.12E-07 8.12E-07 8.12E-07 8.12E-07 8.12E-07 Na-24 2.30E-06 2.30E-06 2.30E-06 2.30E-06 2.30E-06 2.30E-06 2.30E-06 P-32 2.76E-04 1.71E-05 1.07E-05 0.00E+00 0.00E+00 0.00E+00 2.32E-05 Cr-51 0.00E+00 0.00E+00 3.60E-09 2.00E-09 7.89E-10 5.14E-09 6.05E-07 Mn-54 0.00E+00 5.90E-06 1.17E-06 0.00E+00 1.76E-06 0.00E+00 1.21E-05 Mn-56 0.00E+00 1.58E-07 2.81E-08 0.00E+00 2.00E-07 0.00E+00 1.04E-05 Fe-55 3.78E-06 2.68E-06 6.25E-07 0.00E+00 0.00E+00 1.70E-06 1.16E-06 Fe-59 5.87E-06 1.37E-05 5.29E-06 0.00E+00 0.00E+00 4.32E-06 3.24E-05 Co-57 0.00E+00 2.38E-07 3.99E-07 0.00E+00 0.00E+00 0.00E+00 4.44E-06 Co-58 0.00E+00 9.72E-07 2.24E-06 0.00E+00 0.00E+00 0.00E+00 1.34E-05 Co-60 0.00E+00 2.81E-06 6.33E-06 0.00E+00 0.00E+00 0.00E+00 3.66E-05 Ni-63 1.77E-04 1.25E-05 6.00E-06 0.00E+00 0.00E+00 0.00E+00 1.99E-06 Ni-65 7.49E-07 9.57E-08 4.36E-08 0.00E+00 0.00E+00 0.00E+00 5.19E-06 Cu-64 0.00E+00 1.15E-07 5.41E-08 0.00E+00 2.91E-07 0.00E+00 8.92E-06 Zn-65 5.76E-06 2.00E-05 9.33E-06 0.00E+00 1.28E-05 0.00E+00 8.47E-06 Zn-69 1.47E-08 2.80E-08 1.96E-09 0.00E+00 1.83E-08 0.00E+00 5.16E-08 Zn-69m 2.40E-07 5.66E-07 5.19E-08 0.00E+00 3.44E-07 0.00E+00 3.11E-05 Br-82 0.00E+00 0.00E+00 3.04E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-83 0.00E+00 0.00E+00 5.74E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-84 0.00E+00 0.00E+00 7.22E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-85 0.00E+00 0.00E+00 3.05E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 2.98E-05 1.40E-05 0.00E+00 0.00E+00 0.00E+00 4.41E-06 Rb-88 0.00E+00 8.52E-08 4.54E-08 0.00E+00 0.00E+00 0.00E+00 7.30E-15 Rb-89 0.00E+00 5.50E-08 3.89E-08 0.00E+00 0.00E+00 0.00E+00 8.43E-17 Sr-89 4.40E-04 0.00E+00 1.26E-05 0.00E+00 0.00E+00 0.00E+00 5.24E-05 Sr-90 8.30E-03 0.00E+00 2.05E-03 0.00E+00 0.00E+00 0.00E+00 2.33E-04 Sr-91 8.07E-06 0.00E+00 3.21E-07 0.00E+00 0.00E+00 0.00E+00 3.66E-05 Sr-92 3.05E-06 0.00E+00 1.30E-07 0.00E+00 0.00E+00 0.00E+00 7.77E-05 Y-90 1.37E-08 0.00E+00 3.69E-10 0.00E+00 0.00E+00 0.00E+00 1.13E-04 Y-91m 1.29E-10 0.00E+00 4.93E-12 0.00E+00 0.00E+00 0.00E+00 6.09E-09 Y-91 2.01E-07 0.00E+00 5.39E-09 0.00E+00 0.00E+00 0.00E+00 8.24E-05 Y-92 1.21E-09 0.00E+00 3.50E-11 0.00E+00 0.00E+00 0.00E+00 3.32E-05 Y-93 3.83E-09 0.00E+00 1.05E-10 0.00E+00 0.00E+00 0.00E+00 1.17E-04 Zr-95 4.12E-08 1.30E-08 8.94E-09 0.00E+00 1.91E-08 0.00E+00 3.00E-05 Zr-97 2.37E-09 4.69E-10 2.16E-10 0.00E+00 7.11E-10 0.00E+00 1.27E-04 Nb-95 8.22E-09 4.56E-09 2.51E-09 0.00E+00 4.42E-09 0.00E+00 1.95E-05 Nb-97 7.37E-11 1.83E-11 6.68E-12 0.00E+00 2.14E-11 0.00E+00 4.37E-07 Mo-99 0.00E+00 6.03E-06 1.15E-06 0.00E+00 1.38E-05 0.00E+00 1.08E-05 Tc-99m 3.32E-10 9.26E-10 1.20E-08 0.00E+00 1.38E-08 5.14E-10 6.08E-07 Tc-101 3.60E-10 5.12E-10 5.03E-09 0.00E+00 9.26E-09 3.12E-10 8.75E-17 Ru-103 2.55E-07 0.00E+00 1.09E-07 0.00E+00 8.99E-07 0.00E+00 2.13E-05 Ru-105 2.18E-08 0.00E+00 8.46E-09 0.00E+00 2.75E-07 0.00E+00 1.76E-05 Ru-106 3.92E-06 0.00E+00 4.94E-07 0.00E+00 7.56E-06 0.00E+00 1.88E-04 WBL-23-19 E2-94 of 207

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TEEN Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 2.05E-07 1.94E-07 1.18E-07 0.00E+00 3.70E-07 0.00E+00 5.45E-05 Sb-124 3.87E-06 7.13E-08 1.51E-06 8.78E-09 0.00E-00 3.38E-06 7.80E-05 Sb-125 2.48E-06 2.71E-08 5.80E-07 2.37E-09 0.00E+00 2.18E-06 1.93E-05 Te-125m 3.83E-06 1.38E-06 5.12E-07 1.07E-06 0.00E+00 0.00E+00 1.13E-05 Te-127m 9.67E-06 3.43E-06 1.15E-06 2.30E-06 3.92E-05 0.00E+00 2.41E-05 Te-127 1.58E-07 5.60E-08 3.40E-08 1.09E-07 6.40E-07 0.00E+00 1.22E-05 Te-129m 1.63E-05 6.05E-06 2.58E-06 5.26E-06 6.82E-05 0.00E+00 6.12E-05 Te-129 4.48E-08 1.67E-08 1.09E-08 3.20E-08 1.88E-07 0.00E+00 2.45E-07 Te-131m 2.44E-06 1.17E-06 9.76E-07 1.76E-06 1.22E-05 0.00E+00 9.39E-05 Te-131 2.79E-08 1.15E-08 8.72E-09 2.15E-08 1.22E-07 0.00E+00 2.29E-09 Te-132 3.49E-06 2.21E-06 2.08E-06 2.33E-06 2.12E-05 0.00E+00 7.00E-05 I-130 1.03E-06 2.98E-06 1.19E-06 2.43E-04 4.59E-06 0.00E+00 2.29E-06 I-131 5.85E-06 8.19E-06 4.40E-06 2.39E-03 1.41E-05 0.00E+00 1.62E-06 I-132 2.79E-07 7.30E-07 2.62E-07 2.46E-05 1.15E-06 0.00E+00 3.18E-07 I-133 2.01E-06 3.41E-06 1.04E-06 4.76E-04 5.98E-06 0.00E+00 2.58E-06 I-134 1.46E-07 3.87E-07 1.39E-07 6.45E-06 6.10E-07 0.00E+00 5.10E-09 I-135 6.10E-07 1.57E-06 5.82E-07 1.01E-04 2.48E-06 0.00E+00 1.74E-06 Cs-134 8.37E-05 1.97E-04 9.14E-05 0.00E+00 6.26E-05 2.39E-05 2.45E-06 Cs-136 8.59E-06 3.38E-05 2.27E-05 0.00E+00 1.84E-05 2.90E-06 2.72E-06 Cs-137 1.12E-04 1.49E-04 5.19E-05 0.00E+00 5.07E-05 1.97E-05 2.12E-06 Cs-138 7.76E-08 1.49E-07 7.45E-08 0.00E+00 1.10E-07 1.28E-08 6.76E-11 Ba-139 1.39E-07 9.78E-11 4.05E-09 0.00E+00 9.22E-11 6.74E-11 1.24E-06 Ba-140 2.84E-05 3.48E-08 1.83E-06 0.00E+00 1.18E-08 2.34E-08 4.38E-05 Ba-141 6.71E-08 5.01E-11 2.24E-09 0.00E+00 4.65E-11 3.43E-11 1.43E-13 Ba-142 2.99E-08 2.99E-11 1.84E-09 0.00E+00 2.53E-11 1.99E-11 9.18E-20 La-140 3.48E-09 1.71E-09 4.55E-10 0.00E+00 0.00E+00 0.00E+00 9.82E-05 La-142 1.79E-10 7.95E-11 1.98E-11 0.00E+00 0.00E+00 0.00E+00 2.42E-06 Ce-141 1.33E-08 8.88E-09 1.02E-09 0.00E+00 4.18E-09 0.00E+00 2.54E-05 Ce-143 2.35E-09 1.71E-06 1.91E-10 0.00E+00 7.67E-10 0.00E+00 5.14E-05 Ce-144 6.96E-07 2.88E-07 3.74E-08 0.00E+00 1.72E-07 0.00E+00 1.75E-04 Pr-143 1.31E-08 5.23E-09 6.52E-10 0.00E+00 3.04E-09 0.00E+00 4.31E-05 Pr-144 4.30E-11 1.76E-11 2.18E-12 0.00E+00 1.01E-11 0.00E+00 4.74E-14 Nd-147 9.38E-09 1.02E-08 6.11E-10 0.00E+00 5.99E-09 0.00E+00 3.68E-05 W-187 1.46E-07 1.19E-07 4.17E-08 0.00E+00 0.00E+00 0.00E+00 3.22E-05 Np-239 1.76E-09 1.66E-10 9.22E-11 0.00E+00 5.21E-10 0.00E+00 2.67E-05

References:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125 are from Reference 17, Table 3.

All others are from Reference 4, Table E-12.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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CHILD Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 C-14 1.21E-05 2.42E-06 2.42E-06 2.42E-06 2.42E-06 2.42E-06 2.42E-06 Na-24 5.80E-06 5.80E-06 5.80E-06 5.80E-06 5.80E-06 5.80E-06 5.80E-06 P-32 8.25E-04 3.86E-05 3.18E-05 0.00E+00 0.00E+00 0.00E+00 2.28E-05 Cr-51 0.00E+00 0.00E+00 8.90E-09 4.94E-09 1.35E-09 9.02E-09 4.72E-07 Mn-54 0.00E+00 1.07E-05 2.85E-06 0.00E+00 3.00E-06 0.00E+00 8.98E-06 Mn-56 0.00E+00 3.34E-07 7.54E-08 0.00E+00 4.04E-07 0.00E+00 4.84E-05 Fe-55 1.15E-05 6.10E-06 1.89E-06 0.00E+00 0.00E+00 3.45E-06 1.13E-06 Fe-59 1.65E-05 2.67E-05 1.33E-05 0.00E+00 0.00E+00 7.74E-06 2.78E-05 Co-57 0.00E+00 4.93E-07 9.98E-07 0.00E+00 0.00E+00 0.00E+00 4.04E-06 Co-58 0.00E+00 1.80E-06 5.51E-06 0.00E+00 0.00E+00 0.00E+00 1.05E-05 Co-60 0.00E+00 5.29E-06 1.56E-05 0.00E+00 0.00E+00 0.00E+00 2.93E-05 Ni-63 5.38E-04 2.88E-05 1.83E-05 0.00E+00 0.00E+00 0.00E+00 1.94E-06 Ni-65 2.22E-06 2.09E-07 1.22E-07 0.00E+00 0.00E+00 0.00E+00 2.56E-05 Cu-64 0.00E+00 2.45E-07 1.48E-07 0.00E+00 5.92E-07 0.00E+00 1.15E-05 Zn-65 1.37E-05 3.65E-05 2.27E-05 0.00E+00 2.30E-05 0.00E+00 6.41E-06 Zn-69 4.38E-08 6.33E-08 5.85E-09 0.00E+00 3.84E-08 0.00E+00 3.99E-06 Zn-69m 7.10E-07 1.21E-06 1.43E-07 0.00E+00 7.03E-07 0.00E+00 3.94E-05 Br-82 0.00E+00 0.00E+00 7.55E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-83 0.00E+00 0.00E+00 1.71E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-84 0.00E+00 0.00E+00 1.98E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-85 0.00E+00 0.00E+00 9.12E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 6.70E-05 4.12E-05 0.00E+00 0.00E+00 0.00E+00 4.31E-06 Rb-88 0.00E+00 1.90E-07 1.32E-07 0.00E+00 0.00E+00 0.00E+00 9.32E-09 Rb-89 0.00E+00 1.17E-07 1.04E-07 0.00E+00 0.00E+00 0.00E+00 1.02E-09 Sr-89 1.32E-03 0.00E+00 3.77E-05 0.00E+00 0.00E+00 0.00E+00 5.11E-05 Sr-90 1.70E-02 0.00E+00 4.31E-03 0.00E+00 0.00E+00 0.00E+00 2.29E-04 Sr-91 2.40E-05 0.00E+00 9.06E-07 0.00E+00 0.00E+00 0.00E+00 5.30E-05 Sr-92 9.03E-06 0.00E+00 3.62E-07 0.00E+00 0.00E+00 0.00E+00 1.71E-04 Y-90 4.11E-08 0.00E+00 1.10E-09 0.00E+00 0.00E+00 0.00E+00 1.17E-04 Y-91m 3.82E-10 0.00E+00 1.39E-11 0.00E+00 0.00E+00 0.00E+00 7.48E-07 Y-91 6.02E-07 0.00E+00 1.61E-08 0.00E+00 0.00E+00 0.00E+00 8.02E-05 Y-92 3.60E-09 0.00E+00 1.03E-10 0.00E+00 0.00E+00 0.00E+00 1.04E-04 Y-93 1.14E-08 0.00E+00 3.13E-10 0.00E+00 0.00E+00 0.00E+00 1.70E-04 Zr-95 1.16E-07 2.55E-08 2.27E-08 0.00E+00 3.65E-08 0.00E+00 2.66E-05 Zr-97 6.99E-09 1.01E-09 5.96E-10 0.00E+00 1.45E-09 0.00E+00 1.53E-04 Nb-95 2.25E-08 8.76E-09 6.26E-09 0.00E+00 8.23E-09 0.00E+00 1.62E-05 Nb-97 2.17E-10 3.92E-11 1.83E-11 0.00E+00 4.35E-11 0.00E+00 1.21E-05 Mo-99 0.00E+00 1.33E-05 3.29E-06 0.00E+00 2.84E-05 0.00E+00 1.10E-05 Tc-99m 9.23E-10 1.81E-09 3.00E-08 0.00E+00 2.63E-08 9.19E-10 1.03E-06 Tc-101 1.07E-09 1.12E-09 1.42E-08 0.00E+00 1.91E-08 5.92E-10 3.56E-09 Ru-103 7.31E-07 0.00E+00 2.81E-07 0.00E+00 1.84E-06 0.00E+00 1.89E-05 Ru-105 6.45E-08 0.00E+00 2.34E-08 0.00E+00 5.67E-07 0.00E+00 4.21E-05 Ru-106 1.17E-05 0.00E+00 1.46E-06 0.00E+00 1.58E-05 0.00E+00 1.82E-04 WBL-23-19 E2-96 of 207

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CHILD Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 5.39E-07 3.64E-07 2.91E-07 0.00E+00 6.78E-07 0.00E+00 4.33E-05 Sb-124 1.11E-05 1.44E-07 3.89E-06 2.45E-08 0.00E+00 6.16E-06 6.94E-05 Sb-125 7.16E-06 5.52E-08 1.50E-06 6.63E-09 0.00E+00 3.99E-06 1.71E-05 Te-125m 1.14E-05 3.09E-06 1.52E-06 3.20E-06 0.00E+00 0.00E+00 1.10E-05 Te-127m 2.89E-05 7.78E-06 3.43E-06 6.91E-06 8.24E-05 0.00E+00 2.34E-05 Te-127 4.71E-07 1.27E-07 1.01E-07 3.26E-07 1.34E-06 0.00E+00 1.84E-05 Te-129m 4.87E-05 1.36E-05 7.56E-06 1.57E-05 1.43E-04 0.00E+00 5.94E-05 Te-129 1.34E-07 3.74E-08 3.18E-08 9.56E-08 3.92E-07 0.00E+00 8.34E-06 Te-131m 7.20E-06 2.49E-06 2.65E-06 5.12E-06 2.41E-05 0.00E+00 1.01E-04 Te-131 8.30E-08 2.53E-08 2.47E-08 6.35E-08 2.51E-07 0.00E+00 4.36E-07 Te-132 1.01E-05 4.47E-06 5.40E-06 6.51E-06 4.15E-05 0.00E+00 4.50E-05 I-130 2.92E-06 5.90E-06 3.04E-06 6.50E-04 8.82E-06 0.00E+00 2.76E-06 I-131 1.72E-05 1.73E-05 9.83E-06 5.72E-03 2.84E-05 0.00E+00 1.54E-06 I-132 8.00E-07 1.47E-06 6.76E-07 6.82E-05 2.25E-06 0.00E+00 1.73E-06 I-133 5.92E-06 7.32E-06 2.77E-06 1.36E-03 1.22E-05 0.00E+00 2.95E-06 I-134 4.19E-07 7.78E-07 3.58E-07 1.79E-05 1.19E-06 0.00E+00 5.16E-07 I-135 1.75E-06 3.15E-06 1.49E-06 2.79E-04 4.83E-06 0.00E+00 2.40E-06 Cs-134 2.34E-04 3.84E-04 8.10E-05 0.00E+00 1.19E-04 4.27E-05 2.07E-06 Cs-136 2.35E-05 6.46E-05 4.18E-05 0.00E+00 3.44E-05 5.13E-06 2.27E-06 Cs-137 3.27E-04 3.13E-04 4.62E-05 0.00E+00 1.02E-04 3.67E-05 1.96E-06 Cs-138 2.28E-07 3.17E-07 2.01E-07 0.00E+00 2.23E-07 2.40E-08 1.46E-07 Ba-139 4.14E-07 2.21E-10 1.20E-08 0.00E+00 1.93E-10 1.30E-10 2.39E-05 Ba-140 8.31E-05 7.28E-08 4.85E-06 0.00E+00 2.37E-08 4.34E-08 4.21E-05 Ba-141 2.00E-07 1.12E-10 6.51E-09 0.00E+00 9.69E-11 6.58E-10 1.14E-07 Ba-142 8.74E-08 6.29E-11 4.88E-09 0.00E+00 5.09E-11 3.70E-11 1.14E-09 La-140 1.01E-08 3.53E-09 1.19E-09 0.00E+00 0.00E+00 0.00E+00 9.84E-05 La-142 5.24E-10 1.67E-10 5.23E-11 0.00E+00 0.00E+00 0.00E+00 3.31E-05 Ce-141 3.97E-08 1.98E-08 2.94E-09 0.00E+00 8.68E-09 0.00E+00 2.47E-05 Ce-143 6.99E-09 3.79E-06 5.49E-10 0.00E+00 1.59E-09 0.00E+00 5.55E-05 Ce-144 2.08E-06 6.52E-07 1.11E-07 0.00E+00 3.61E-07 0.00E+00 1.70E-04 Pr-143 3.93E-08 1.18E-08 1.95E-09 0.00E+00 6.39E-09 0.00E+00 4.24E-05 Pr-144 1.29E-10 3.99E-11 6.49E-12 0.00E+00 2.11E-11 0.00E+00 8.59E-08 Nd-147 2.79E-08 2.26E-08 1.75E-09 0.00E+00 1.24E-08 0.00E+00 3.58E-05 W-187 4.29E-07 2.54E-07 1.14E-07 0.00E+00 0.00E+00 0.00E+00 3.57E-05 Np-239 5.25E-09 3.77E-10 2.65E-10 0.00E+00 1.09E-09 0.00E+00 2.79E-05

References:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125 are from Reference 17, Table 2.

All others are from Reference 4, Table E-13.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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INFANT Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 3.08E-07 3.08E-07 3.08E-07 3.08E-07 3.08E-07 3.08E-07 3.08E-07 C-14 2.37E-05 5.06E-06 5.06E-06 5.06E-06 5.06E-06 5.06E-06 5.06E-06 Na-24 1.01E-05 1.01E-05 1.01E-05 1.01E-05 1.01E-05 1.01E-05 1.01E-05 P-32 1.70E-03 1.00E-04 6.59E-05 0.00E+00 0.00E+00 0.00E+00 2.30E-05 Cr-51 0.00E+00 0.00E+00 1.41E-08 9.20E-09 2.01E-09 1.79E-08 4.11E-07 Mn-54 0.00E+00 1.99E-05 4.51E-06 0.00E+00 4.41E-06 0.00E+00 7.31E-06 Mn-56 0.00E+00 8.18E-07 1.41E-07 0.00E+00 7.03E-07 0.00E+00 7.43E-05 Fe-55 1.39E-05 8.98E-06 2.40E-06 0.00E+00 0.00E+00 4.39E-06 1.14E-06 Fe-59 3.08E-05 5.38E-05 2.12E-05 0.00E+00 0.00E+00 1.59E-05 2.57E-05 Co-57 0.00E+00 1.15E-06 1.87E-06 0.00E+00 0.00E+00 0.00E+00 3.92E-06 Co-58 0.00E+00 3.60E-06 8.98E-06 0.00E+00 0.00E+00 0.00E+00 8.97E-06 Co-60 0.00E+00 1.08E-05 2.55E-05 0.00E+00 0.00E+00 0.00E+00 2.57E-05 Ni-63 6.34E-04 3.92E-05 2.20E-05 0.00E+00 0.00E+00 0.00E+00 1.95E-06 Ni-65 4.70E-06 5.32E-07 2.42E-07 0.00E+00 0.00E+00 0.00E+00 4.05E-05 Cu-64 0.00E+00 6.09E-07 2.82E-07 0.00E+00 1.03E-06 0.00E+00 1.25E-05 Zn-65 1.84E-05 6.31E-05 2.91E-05 0.00E+00 3.06E-05 0.00E+00 5.33E-05 Zn-69 9.33E-08 1.68E-07 1.25E-08 0.00E+00 6.98E-08 0.00E+00 1.37E-05 Zn-69m 1.50E-06 3.06E-06 2.79E-07 0.00E+00 1.24E-06 0.00E+00 4.24E-05 Br-82 0.00E+00 0.00E+00 1.27E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-83 0.00E+00 0.00E+00 3.63E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-84 0.00E+00 0.00E+00 3.82E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-85 0.00E+00 0.00E+00 1.94E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 1.70E-04 8.40E-05 0.00E+00 0.00E+00 0.00E+00 4.35E-06 Rb-88 0.00E+00 4.98E-07 2.73E-07 0.00E+00 0.00E+00 0.00E+00 4.85E-07 Rb-89 0.00E+00 2.86E-07 1.97E-07 0.00E+00 0.00E+00 0.00E+00 9.74E-08 Sr-89 2.51E-03 0.00E+00 7.20E-05 0.00E+00 0.00E+00 0.00E+00 5.16E-05 Sr-90 1.85E-02 0.00E+00 4.71E-03 0.00E+00 0.00E+00 0.00E+00 2.31E-04 Sr-91 5.00E-05 0.00E+00 1.81E-06 0.00E+00 0.00E+00 0.00E+00 5.92E-05 Sr-92 1.92E-05 0.00E+00 7.13E-07 0.00E+00 0.00E+00 0.00E+00 2.07E-04 Y-90 8.69E-08 0.00E+00 2.33E-09 0.00E+00 0.00E+00 0.00E+00 1.20E-04 Y-91m 8.10E-10 0.00E+00 2.76E-11 0.00E+00 0.00E+00 0.00E+00 2.70E-06 Y-91 1.13E-06 0.00E+00 3.01E-08 0.00E+00 0.00E+00 0.00E+00 8.10E-05 Y-92 7.65E-09 0.00E+00 2.15E-10 0.00E+00 0.00E+00 0.00E+00 1.46E-04 Y-93 2.43E-08 0.00E+00 6.62E-10 0.00E+00 0.00E+00 0.00E+00 1.92E-04 Zr-95 2.06E-07 5.02E-08 3.56E-08 0.00E+00 5.41E-08 0.00E+00 2.50E-05 Zr-97 1.48E-08 2.54E-09 1.16E-09 0.00E+00 2.56E-09 0.00E+00 1.62E-04 Nb-95 4.20E-08 1.73E-08 1.00E-08 0.00E+00 1.24E-08 0.00E+00 1.46E-05 Nb-97 4.59E-10 9.79E-11 3.53E-11 0.00E+00 7.65E-11 0.00E+00 3.09E-05 Mo-99 0.00E+00 3.40E-05 6.63E-06 0.00E+00 5.08E-05 0.00E+00 1.12E-05 Tc-99m 1.92E-09 3.96E-09 5.10E-08 0.00E+00 4.26E-08 2.07E-09 1.15E-06 Tc-101 2.27E-09 2.86E-09 2.83E-08 0.00E+00 3.40E-08 1.56E-09 4.86E-07 Ru-103 1.48E-06 0.00E+00 4.95E-07 0.00E+00 3.08E-06 0.00E+00 1.80E-05 Ru-105 1.36E-07 0.00E+00 4.58E-08 0.00E+00 1.00E-06 0.00E+00 5.41E-05 Ru-106 2.41E-05 0.00E+00 3.01E-06 0.00E+00 2.85E-05 0.00E+00 1.83E-04 WBL-23-19 E2-98 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 97 of 205 Table 6.4 - INGESTION DOSE FACTORS - DFaij (mrem/pCi ingested) (Page 8 of 8)

INFANT Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 9.96E-07 7.27E-07 4.81E-07 0.00E+00 1.04E-06 0.00E+00 3.77E-05 Sb-124 2.14E-05 3.15E-07 6.63E-06 5.68E-08 0.00E+00 1.34E-05 6.60E-05 Sb-125 1.23E-05 1.19E-07 2.53E-06 1.54E-08 0.00E+00 7.72E-06 1.64E-05 Te-125m 2.33E-05 7.79E-06 3.15E-06 7.84E-06 0.00E+00 0.00E+00 1.11E-05 Te-127m 5.85E-05 1.94E-05 7.08E-06 1.69E-05 1.44E-04 0.00E+00 2.36E-05 Te-127 1.00E-06 3.35E-07 2.15E-07 8.14E-07 2.44E-06 0.00E+00 2.10E-05 Te-129m 1.00E-04 3.43E-05 1.54E-05 3.84E-05 2.50E-04 0.00E+00 5.97E-05 Te-129 2.84E-07 9.79E-08 6.63E-08 2.38E-07 7.07E-07 0.00E+00 2.27E-05 Te-131m 1.52E-05 6.12E-06 5.05E-06 1.24E-05 4.21E-05 0.00E+00 1.03E-04 Te-131 1.76E-07 6.50E-08 4.94E-08 1.57E-07 4.50E-07 0.00E+00 7.11E-06 Te-132 2.08E-05 1.03E-05 9.61E-06 1.52E-05 6.44E-05 0.00E+00 3.81E-05 I-130 6.00E-06 1.32E-05 5.30E-06 1.48E-03 1.45E-05 0.00E+00 2.83E-06 I-131 3.59E-05 4.23E-05 1.86E-05 1.39E-02 4.94E-05 0.00E+00 1.51E-06 I-132 1.66E-06 3.37E-06 1.20E-06 1.58E-04 3.76E-06 0.00E+00 2.73E-06 I-133 1.25E-05 1.82E-05 5.33E-06 3.31E-03 2.14E-05 0.00E+00 3.08E-06 I-134 8.69E-07 1.78E-06 6.33E-07 4.15E-05 1.99E-06 0.00E+00 1.84E-06 I-135 3.64E-06 7.24E-06 2.64E-06 6.49E-04 8.07E-06 0.00E+00 2.62E-06 Cs-134 3.77E-04 7.03E-04 7.10E-05 0.00E+00 1.81E-04 7.42E-05 1.91E-06 Cs-136 4.59E-05 1.35E-04 5.04E-05 0.00E+00 5.38E-05 1.10E-05 2.05E-06 Cs-137 5.22E-04 6.11E-04 4.33E-05 0.00E+00 1.64E-04 6.64E-05 1.91E-06 Cs-138 4.81E-07 7.82E-07 3.79E-07 0.00E+00 3.90E-07 6.09E-08 1.25E-06 Ba-139 8.81E-07 5.84E-10 2.55E-08 0.00E+00 3.51E-10 3.54E-10 5.58E-05 Ba-140 1.71E-04 1.71E-07 8.81E-06 0.00E+00 4.06E-08 1.05E-07 4.20E-05 Ba-141 4.25E-07 2.91E-10 1.34E-08 0.00E+00 1.75E-10 1.77E-10 5.19E-06 Ba-142 1.84E-07 1.53E-10 9.06E-09 0.00E+00 8.81E-11 9.26E-11 7.59E-07 La-140 2.11E-08 8.32E-09 2.14E-09 0.00E+00 0.00E+00 0.00E+00 9.77E-05 La-142 1.10E-09 4.04E-10 9.67E-11 0.00E+00 0.00E+00 0.00E+00 6.86E-05 Ce-141 7.87E-08 4.80E-08 5.65E-09 0.00E+00 1.48E-08 0.00E+00 2.48E-05 Ce-143 1.48E-08 9.82E-06 1.12E-09 0.00E+00 2.86E-09 0.00E+00 5.73E-05 Ce-144 2.98E-06 1.22E-06 1.67E-07 0.00E+00 4.93E-07 0.00E+00 1.71E-04 Pr-143 8.13E-08 3.04E-08 4.03E-09 0.00E+00 1.13E-08 0.00E+00 4.29E-05 Pr-144 2.74E-10 1.06E-10 1.38E-11 0.00E+00 3.84E-11 0.00E+00 4.93E-06 Nd-147 5.53E-08 5.68E-08 3.48E-09 0.00E+00 2.19E-08 0.00E+00 3.60E-05 W-187 9.03E-07 6.28E-07 2.17E-07 0.00E+00 0.00E+00 0.00E+00 3.69E-05 Np-239 1.11E-08 9.93E-10 5.61E-10 0.00E+00 1.98E-09 0.00E+00 2.87E-05

References:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125 are from Reference 17, Table 1.

All others are from Reference 4, Table E-14.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 98 of 205 Table 6.5 - BIOACCUMULATION FACTORS (Bi) FOR FRESHWATER FISH Nuclide Bi Nuclide Bi H-3 9.0E-01 Tc-99m 1.5E+01 C-14 4.6E+03 Tc-101 1.5E+01 Na-24 1.0E+02 Ru-103 1.0E+01 P-32 1.0E+05 Ru-105 1.0E+01 Cr-51 2.0E+02 Ru-106 1.0E+01 Mn-54 4.0E+02 Ag-110m 2.3E+00 Mn-56 4.0E+02 Sb-124 1.0E+00 Fe-55 1.0E+02 Sb-125 1.0E+00 Fe-59 1.0E+02 Sn-125 3.0E+03 Co-57 5.0E+01 Te-125m 4.0E+02 Co-58 5.0E+01 Te-127m 4.0E+02 Co-60 5.0E+01 Te-127 4.0E+02 Ni-63 1.0E+02 Te-129m 4.0E+02 Ni-65 1.0E+02 Te-129 4.0E+02 Cu-64 5.0E+01 Te-131m 4.0E+02 Zn-65 2.0E+03 Te-131 4.0E+02 Zn-69 2.0E+03 Te-132 4.0E+02 Zn-69m 2.0E+03 I-130 4.0E+01 Br-82 4.2E+02 I-131 4.0E+01 Br-83 4.2E+02 I-132 4.0E+01 Br-84 4.2E+02 I-133 4.0E+01 Br-85 4.2E+02 I-134 4.0E+01 Rb-86 2.0E+03 I-135 4.0E+01 Rb-88 2.0E+03 Cs-134 1.9E+03 Rb-89 2.0E+03 Cs-136 1.9E+03 Sr-89 5.6E+01 Cs-137 1.9E+03 Sr-90 5.6E+01 Cs-138 1.9E+03 Sr-91 5.6E+01 Ba-139 4.0E+00 Sr-92 5.6E+01 Ba-140 4.0E+00 Y-90 2.5E+01 Ba-141 4.0E+00 Y-91m 2.5E+01 Ba-142 4.0E+00 Y-91 2.5E+01 La-140 2.5E+01 Y-92 2.5E+01 La-142 2.5E+01 Y-93 2.5E+01 Ce-141 1.0E+00 Zr-95 3.3E+00 Ce-143 1.0E+00 Zr-97 3.3E+00 Ce-144 1.0E+00 Nb-95 3.0E+04 Pr-143 2.5E+01 Nb-97 3.0E+04 Pr-144 2.5E+01 Mo-99 1.0E+01 Nd-147 2.5E+01 W-187 1.2E+03 Np-239 1.0E+01

References:

Bioaccumulation factors for Ag, Sb, and Sn - nuclides are from Reference 16.

Bioaccumulation factors for I-, Cs-, and Sr- nuclides are from Reference 21, Table 3.2.4.

All other nuclides' bioaccumulation factors are from Reference 4, Table A-1.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 99 of 205 Table 6.6 - EXTERNAL DOSE FACTORS FOR STANDING ON CONTAMINATED GROUND - DFij (mrem/h per pCi/m2) (Page 1 of 2)

Nuclide Total Body Skin H-3 0.0 0.0 C-14 0.0 0.0 Na-24 2.50E-08 2.90E-08 P-32 0.0 0.0 Cr-51 2.20E-10 2.60E-10 Mn-54 5.80E-09 6.80E-09 Mn-56 1.10E-08 1.30E-08 Fe-55 0.0 0.0 Fe-59 8.00E-09 9.40E-09 Co-57 1.77E-09 2.21E-09 Co-58 7.00E-09 8.20E-09 Co-60 1.70E-08 2.00E-08 Ni-63 0.0 0.0 Ni-65 3.70E-09 4.30E-09 Cu-64 1.50E-09 1.70E-09 Zn-65 4.00E-09 4.60E-09 Zn-69 0.0 0.0 Zn-69m 5.50E-09 6.59E-09 Br-82 3.18E-08 3.90E-08 Br-83 6.40E-11 9.30E-11 Br-84 1.20E-08 1.40E-08 Br-85 0.0 0.0 Rb-86 6.30E-10 7.20E-10 Rb-88 3.50E-09 4.00E-09 Rb-89 1.50E-08 1.80E-08 Sr-89 5.60E-13 6.50E-13 Sr-91 7.10E-09 8.30E-09 Sr-92 9.00E-09 1.00E-08 Y-90 2.20E-12 2.60E-12 Y-91m 3.80E-09 4.40E-09 Y-91 2.40E-11 2.70E-11 Y-92 1.60E-09 1.90E-09 Y-93 5.70E-10 7.80E-10 Zr-95 5.00E-09 5.80E-09 Zr-97 5.50E-09 6.40E-09 Nb-95 5.10E-09 6.00E-09 Nb-97 8.11E-09 1.00E-08 Mo-99 1.90E-09 2.20E-09 Tc-99m 9.60E-10 1.10E-09 Tc-101 2.70E-09 3.00E-09 Ru-103 3.60E-09 4.20E-09 Ru-105 4.50E-09 5.10E-09 WBL-23-19 E2-101 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 100 of 205 Table 6.6 - EXTERNAL DOSE FACTORS FOR STANDING ON CONTAMINATED GROUND - DFij (mrem/h per pCi/m2) (Page 2 of 2)

Nuclide Total Body Skin Ru-106 1.50E-09 1.80E-09 Ag-110m 1.80E-08 2.10E-08 Sb-124 2.17E-08 2.57E-08 Sb-125 5.48E-09 6.80E-09 Te-125m 3.50E-11 4.80E-11 Te-127m 1.10E-12 1.30E-12 Te-127 1.00E-11 1.10E-11 Te-129m 7.70E-10 9.00E-10 Te-129 7.10E-10 8.40E-10 Te-131m 8.40E-09 9.90E-09 Te-131 2.20E-09 2.60E-06 Te-132 1.70E-09 2.00E-09 I-130 1.40E-08 1.70E-08 I-131 2.80E-09 3.40E-09 I-132 1.70E-08 2.00E-08 I-133 3.70E-09 4.50E-09 I-134 1.60E-08 1.90E-08 I-135 1.20E-08 1.40E-08 Cs-134 1.20E-08 1.40E-08 Cs-136 1.50E-08 1.70E-08 Cs-137 4.20E-09 4.90E-09 Cs-138 2.10E-08 2.40E-08 Ba-139 2.40E-09 2.70E-09 Ba-140 2.10E-09 2.40E-09 Ba-141 4.30E-09 4.90E-09 Ba-142 7.90E-09 9.00E-09 La-140 1.50E-08 1.70E-08 La-142 1.50E-08 1.80E-08 Ce-141 5.50E-10 6.20E-10 Ce-143 2.20E-09 2.50E-09 Ce-144 3.20E-10 3.70E-10 Pr-143 0.0 0.0 Pr-144 2.00E-10 2.30E-10 Nd-147 1.00E-09 1.20E-09 W-187 3.10E-09 3.60E-09 Np-239 9.50E-10 1.10E-09

References:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124 and Sb-125 are from Reference 18.

All others are from Reference 4, Table E-6.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 101 of 205 Figure 6.1 - LIQUID EFFLUENT RELEASE POINTS WBL-23-19 E2-103 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 102 of 205 Figure 6.2 - LIQUID RADWASTE SYSTEM WBL-23-19 E2-104 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 103 of 205 Figure 6.3 - STEAM GENERATOR BLOWDOWN/CONDENSATE DEMINERALIZER WBL-23-19 E2-105 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 104 of 205 7.0 - GASEOUS EFFLUENTS INTRODUCTION There are six discharge points for gaseous radioactive effluents from WBN. These discharge points are:

Unit 1 Condenser Vacuum Exhaust (CVE), Unit 2 CVE, Service Building Exhaust, Auxiliary Building Exhaust, Unit 1 Shield Building Exhaust, and Unit 2 Shield Building Exhaust. Detailed descriptions are provided below, and Figure 7.1 provides an outline of these airborne discharge points with associated radiation monitors. None of these discharge points meets the criteria of Regulatory Guide 1.111 for elevated releases; therefore, all releases are considered to be ground-level. Various plant systems contribute activity to the CVE, the Service Building Exhaust and the Auxiliary Building Exhaust, but these sources are not treated as individual release points. There are two gas systems associated with each Shield Building Exhaust: the Waste Gas Decay Tank (WGDT) System and the Containment Purge System which includes the Incore Instrument Room Purge.

The discharge points and the two associated gas systems are each monitored by noble gas radiation monitors. These monitors perform two main functions: to identify any unexpected radioactivity releases, and to ensure that the dose rate limits of ODCM Control 1.2.2.1 are met. Each monitor has an alarm/trip setpoint which causes the monitor to alarm if the monitor's setpoint is exceeded. The monitors do not have separate alarm and trip setpoints; they have one setpoint which performs both functions. The noble gas radiation monitors for Containment Purge and the WGDT release points initiate an isolation function if the alarm/trip setpoint is exceeded. The radiation monitor alarm/trip setpoints for each release point and discharge point are based on the radioactive noble gases in the gaseous effluent. It is not considered practical to apply instantaneous alarm/trip setpoints for integrating radiation monitors sensitive to radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases.

Releases are continuous, except for releases from the WGDT or Containment Purge Systems which are made as batch releases.

For batch releases, the WGDT or Containment to be released is grab sampled for radioactivity in accordance with Table 2.2-2. The samples are analyzed to determine the maximum allowable release flow rate to ensure compliance with the dose rate limits of ODCM Control 1.2.2.1 as described in ODCM Section 7.2. The sampling results are also used to determine a setpoint for the associated noble gas radiation monitor for the release. The setpoints are determined in accordance with ODCM Section 7.1.

Dose calculations are performed for each release, as outlined in ODCM Sections 7.3 and 7.4, to determine compliance with ODCM Controls 1.2.2.2 and 1.2.2.3.

For continuous releases, the pathways are sampled for radioactivity periodically, as required by Table 2.2-2. The samples are analyzed to ensure compliance with the dose and dose rate limits of ODCM Control 1.2.2.1, 1.2.2.2, and 1.2.2.3, as described in ODCM Sections 7.1 and 7.2. The sampling results are also used to determine a setpoint for the associated noble gas radiation monitor for the release. The setpoints are determined in accordance with ODCM Section 7.1. Dose calculations are performed for each sampling period, as outlined in ODCM Sections 7.3 and 7.4, to determine compliance with ODCM Controls 1.2.2.2 and 1.2.2.3.

Once per month, the projected dose is calculated, as outlined in ODCM Section 7.5, to determine compliance with ODCM Control 1.2.2.4.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 105 of 205 All dose calculations performed to determine compliance with ODCM Controls 1.2.2.2, 1.2.2.3 and 1.2.2.4 are detailed in ODCM Sections 7.3 and 7.4. The calculational methodologies are based on the guidance provided in NUREG-0133 (Reference 3) and Regulatory Guide 1.109 (Reference 4). Because all releases are ground level, semi-infinite cloud models are used in the dose calculations.

The quantities of each radionuclide identified and released are input into a more rigorous calculation methodology, described in ODCM Section 7.7, to determine the individual and population doses to be reported to the NRC in the Annual Radioactive Effluent Release Report. These dose calculation methodologies are based on the guidance provided in Regulatory Guide 1.109 (Reference 4).

RELEASE/DISCHARGE POINTS DESCRIPTION There are six discharge points at WBN that are monitored for airborne radioactive effluents. These are:

a CVE for each unit, a common Service Building Exhaust, a common Auxiliary Building Exhaust and a Shield Building Exhaust for each unit. Each of these discharge points may have one or more release points associated with it as described below. Figure 7.1 provides a simplified outline of the airborne effluent release and discharge points with associated radiation monitor identifications. Figure 7.2 provides a more detailed description of the release and discharge points, with flow rates, radiation monitors, and associated inputs.

Condenser Vacuum Exhaust The CVEs are located in the turbine buildings. They exhaust at a maximum design flow rate of 45 cfm per pump. These discharge points are monitored by radiation monitors 1,2-RE-90-119 for normal operation.

Service Building Exhaust Areas in the Service Building in which work is conducted which may produce radioactive effluents all exhaust to the Service Building Exhaust. This discharge point exhausts at a maximum design flow rate of approximately 10,000 cfm and is monitored by radiation monitor 0-RE-90-132B.

Auxiliary Building Exhaust The Auxiliary Building exhausts at a maximum total design flow of 228,000 cfm (2 of 4 ventilation fans and 1 fuel handling fan). This discharge point exhaust is monitored by radiation monitor 0-RE-90-101B.

The annulus vacuum priming fans (2 fans at 1000 cfm each) exhaust to the auxiliary building fuel handling exhaust header.

Shield Building Exhaust There is one Shield Building Exhaust for each unit. These discharge points are monitored by radiation monitors 1,2-RE-90-400A.

There are nine Waste Gas Decay Tanks (WGDTs) that discharge into the waste gas header which is released into a Shield Building Vent (see Figure 7.3). The Train A Auxiliary Building Gas Treatment System (ABGTS) is operated during a WGDT release. Each WGDT has a design capacity of 600 ft3 and a maximum design release rate of 100 cfm [SOURCE NOTE 17]. The WGDT release point is monitored by radiation monitor 0-RE-90-118.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 106 of 205 The Auxiliary Building Gas Treatment System (ABGTS) draws from the Auxiliary Building Secondary Containment Enclosure and exhausts to the Shield Building Exhaust. Any activity released from the Auxiliary Building through the ABGTS is accounted for as a part of the Auxiliary Building Exhaust releases, and will not be tracked separately. An Auxiliary Building Isolation signal starts the ABGTS.

The Emergency Gas Treatment System is used to draw a vacuum in the annulus and exhaust to the Shield Building Exhaust under emergency conditions, and could do so during normal operation.

Both the Containment Purge and the Incore Instrument Room Purge from each unit tie into the Shield Building Exhaust. The Containment Purge release point exhausts at a maximum of 28,000 cfm and is monitored by radiation monitors 1,2-RE-90-130 and 1,2-RE-90-131. If the Incore Instrument Room Purge is operating exclusively, it exhausts at 800 cfm, and is monitored by the Containment Purge Monitors given above. The common header exhausts to the Shield Building Exhaust.

7.1 GASEOUS EFFLUENT MONITOR INSTRUMENT SETPOINTS Airborne effluent noble gas monitor setpoints are determined to ensure that the dose rate at the UNRESTRICTED AREA BOUNDARY does not exceed the dose rate limits given in ODCM Control 1.2.2.1 and to identify unexpected releases. ODCM Control 1.1.2 establishes operability requirements for these monitors. Allocation factors (AF) are used in the setpoint calculation to allocate a fraction of the total body dose rate limit to each discharge point. These allocation factors may be changed as required to support plant operational needs, but shall not exceed a sum of one. Therefore, a particular monitor reaching the calculated maximum setpoint as described below does not necessarily mean that the dose rate limit at the UNRESTRICTED AREA BOUNDARY is being exceeded; the alarm indicates that the specific release/discharge point is contributing a greater fraction of the dose rate limit than was allocated to the associated monitor and will require further evaluation.

The gaseous effluent radiation monitors and their setpoint information are outlined below:

Setpoint Release Pathway Monitor Default Setpoint Limit Setpoint 1-RE-90-130 Containment 2-RE-90-130 Section 7.1.1.3 (1) Section 7.1.2 Purge 1-RE-90-131 2-RE-90-131 WGDT 0-RE-90-118 Section 7.1.1.2 Smax Section 7.1.2 Shield 1-RE-90-400A Smax Building Section 7.1.1.3 Section 7.1.2 2-RE-90-400A Exhaust Auxiliary Building 0-RE-90-101B Section 7.1.1.3 Smax Section 7.1.2 Exhaust Service Building 0-RE-90-132B Section 7.1.1.3 Smax Section 7.1.2 Exhaust 1-RE-90-119 Smax CVE Section 7.1.1.4 Section 7.1.2 2-RE-90-119 (1) Smax or Tech Spec value from setpoint and scaling document, whichever is smaller.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 107 of 205 7.1.1 Default Monitor Setpoints 7.1.1.1 Reserved for future use.

7.1.1.2 Waste Gas Decay Tank Effluent Monitor (0-RE-90-118)

During periods of release, the methodology in Section 7.1.2 will be used to determine the monitor setpoint and may be set at a default value. Site procedures will document and control this value.

7.1.1.3 Shield Building Exhaust (1,2-RE-90-400A), Auxiliary Building Exhaust (0-RE-90-101B),

Containment Purge Effluent Monitors (1,2-RE-90-130,-131), and Service Building Exhaust (0-RE-90-132B)

These discharge point effluent monitors are set to ensure compliance with ODCM Control 1.2.2.1.

The default setpoints are determined by calculating the maximum calculated setpoint described by Equation 7.3 using Xe-133 monitor efficiencies, design flow rates, and setting the ratio DRlim/DR equal to 1.0. The default setpoints for the shield building monitors are calculated in units of µCi/s. The default setpoints will be defined in plant procedures.

7.1.1.4 Condenser Vacuum Exhaust Vent (1,2-RE-90-119)

This discharge point effluent monitor is set to ensure compliance with ODCM Control 1.2.2.1 and to identify the presence of primary to secondary leakage of radioactivity. The default setpoint is determined in one of two ways: by calculating the maximum calculated setpoint as described in Section 7.1.1.3, and then taking a percentage of this value as the setpoint; or by defining the setpoint as two times the normal background. The default setpoint will be defined in plant instructions. Once a primary to secondary leak is identified, the setpoint on this monitor may be incrementally adjusted upward as defined in plant procedures to enable it to be used to identify any further increases in the leak rate.

7.1.2 Release Permit Monitor Setpoint Determination For each release, two setpoints are calculated for the monitor: one based on the expected response of the monitor to the radioactivity in the effluent stream (described in Sections 7.1.2.1 and 7.1.2.2) which allows for the identification of any release of radioactivity above the expected amount; and a calculated maximum setpoint which corresponds to the most restrictive dose rate limit given in ODCM Control 1.2.2.1 (described in Section 7.1.2.3) which ensures that the release will be stopped if it exceeds the dose rate limits after dilution. A comparison is then made (as described in Section 7.1.2.4) between these two calculated setpoints and the default setpoints (described in Section 7.1.1) to determine which is used for the release.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 108 of 205 7.1.2.1 Expected Monitor Response The expected monitor response, ER, is determined using the following equation:

ER = BKG + Ei C i (7.1) i where:

BKG = monitor background, cpm.

Ei = efficiency factor for the monitor for nuclide i, cpm per µCi/cc. This term may also be referred to as a response or calibration factor.

Ci = measured concentration of nuclide i, µCi/cc.

7.1.2.2 Expected Response Setpoint An expected response setpoint SER is calculated for the monitor for each release:

S ER = X E C i

i i + X BKG (7.2) where:

X = administrative factors designed to account for expected variations in monitor response and background (as defined in plant procedures). The ranges of values are: 1< X 2.0.

[SOURCE NOTE 15]

7.1.2.3 Calculated Maximum Setpoint The calculated maximum setpoint, Smax in cpm, corresponding to the dose rate limit is determined using the following equation:

DR Lim S max = AF VCF SF (ER BKG ) + BKG (7.3)

DR where:

AF = dose rate allocation factor for the release point, dimensionless. The sum of all dose rate allocation factors must be 1. The dose rate allocation factors for release points are defined in approved plant procedures.

VCF = Vacuum correction factor applied to noble gas monitors whose detector operates at a negative pressure. This factor will be defined in plant procedures for applicable monitors and will have a range of: 0 < VCF 1.0. [SOURCE NOTE 2]

SF = safety factor for the monitor, dimensionless. Safety factors will be 1. Safety factors for each monitor are defined in approved plant procedures.

DRLim= the dose rate limit, mrem/y.

= 500 mrem/y to the total body for noble gases,

= 3000 mrem/y to the skin for noble gases, and DR = the calculated dose rate for the release, mrem/y.

= DRTB for total body (as described in Section 7.2.1),

= DRs for skin (as described in Section 7.2.2), and ER = expected monitor response (as calculated in Equation 7.1), cpm.

BKG = the monitor background, cpm.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 109 of 205 7.1.2.4 Setpoint Determination When release permits are generated, the expected response and maximum calculated setpoints are determined as described in Equations 7.2 and 7.3. A comparison is made between these two calculated setpoints and the default setpoint as described below to choose the appropriate setpoint for the monitor during the release (after the release, the monitor is normally returned to the default setpoint).

1. IF SER < Sdefault < Smax Reported = Sdefault

2. IF SER < Smax < Sdefault Reported = SER

3. IF Sdefault < SER < Smax Reported = SER

= Sdefault (for Containment Purge monitors)

4. IF SER Smax Reported = Smax WBL-23-19 E2-111 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 110 of 205 7.2 GASEOUS EFFLUENTS - DOSE RATES Dose rates are calculated for total body and skin due to submersion within a cloud of noble gases using a semi-infinite cloud model as described in NUREG-0133. The dose rates are compared to their respective limits and are used in the determination of setpoints for noble gas radiation monitors.

7.2.1 Total Body Dose Rate The calculated total body dose rate must meet the condition (from NUREG-0133 Section 5.2.1):

[V Q i is + DFB i {( ) Q }] 500 mrem/y Q v iv i

Since there are no elevated release points at WBN, the elevated release terms in the equation (Vi and Qis) are not used. Substituting the flow (f) multiplied by the concentration (C) for the release rate (Q) in the above equation, the dose rate to the total body, DRTB in mrem/y, is calculated using the following equation:

DR TB =

Q f i Ci DFBi (7.4) where:

/Q = terrain adjusted relative concentration, s/m3. Relative air concentrations are calculated for the unrestricted area boundary in each of the 16 sectors as described in Section 7.9.2 using the historical meteorological data for the period 1986-2005 given in Table 7.2. For dose rate calculations, the highest value from the 16 unrestricted area boundary locations is used. The values for each of the sixteen sectors are given in Table 7.3 (maximum values are highlighted on the table).

f = flowrate of effluent stream, cc/s.

Ci = concentration of noble gas nuclide i in effluent stream, µCi/cc.

DFBi = total body dose factor due to gamma radiation for noble gas nuclide i, mrem/y per µCi/m3 (Table 7.4).

The total body dose rate is calculated for each release. It is compared to the limit of 500 mrem/y and is also used in the determination of the radiation monitor setpoint as described in Section 7.1.2.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 111 of 205 7.2.2 Skin Dose Rate The calculated skin dose rate must meet the condition (from NUREG-0133 Section 5.2.1):

{[(DFS ( ) + 1.1 B )Q ]+ [DFS + 1.1 DF ][( ) Q ]} 3000 mrem/y i Q s i is i i Q s iv i

Since there are no elevated release points at WBN, the stack terms in the equation, DFSi, (/Q)s, Bi, and Qis, are not used. Substituting the flow (f) multiplied by the concentration (C) for the release rate (Q) in the above equation, the dose rate to the skin, DRS in mrem/y, is calculated using the following equation:

DR S =

Q f C (DF i

i Si + 1.11 DFi ) (7.5) where:

/Q = terrain adjusted relative concentration, s/m3. Relative air concentrations are calculated for the unrestricted area boundary in each of the 16 sectors as described in Section 7.9.2 using the historical meteorological data for the period 1986-2005 given in Table 7.2. For dose rate calculations, the highest value from the 16 unrestricted area boundary locations is used. The values for each of the sixteen sectors are given in Table 7.3 (maximum values are highlighted on the table).

f = flowrate of effluent stream, cc/s.

Ci = concentration of noble gas nuclide i in effluent stream, µCi/cc.

DFSi = skin dose factor due to beta radiation for noble gas nuclide i, mrem/y per µCi/m3 (Table 7.4).

1.11 = the average ratio of tissue to air energy absorption coefficients, mrem/mrad. (1.11 is used from Regulatory Guide 1.109 Equation B-7 in lieu of 1.1 from NUREG-0133)

DFi = dose conversion factor for external gamma for noble gas nuclide i, mrad/y per µCi/m3 (Table 7.4).

The skin dose rate is calculated for each release. It is compared to the limit of 3000 mrem/y and is also used in the determination of the radiation monitor setpoint as described in Section 7.1.2.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 112 of 205 7.2.3 I-131, I-133, Tritium and All Radionuclides in Particulate Form with Half-Lives of Greater Than 8 Days - Organ Dose Rate Organ dose rates due to I-131, I-133, tritium and all radionuclides in particulate form with half-lives of greater than 8 days, DRj in mrem/y, are calculated for all age groups (adult, teen, child, and infant) and all organs (bone, liver, total body, thyroid, kidney, lung, and GI Tract). The calculated organ dose rate must meet the condition (from NUREG-0133 Section 5.2.1):

P (W Q i

i s s + WvQiv ) 1500 mrem/y Since there are no elevated release points at WBN, the elevated release terms (Ws and Qs) are not used.

Substituting the flow (f) multiplied by the concentration (C) for the release rate (Q) in the above equation, and inserting the appropriate dispersion factor (/Q or D/Q) for each pathway considered, the organ dose rate, DRj in mrem/y, is calculated using the following equation:

DR j = f C T Q

(R IT + R CPT ) + C i [Q R Ii + QD (R CPi + R MPi + R VFi + R Gi )] (7.6) i where:

f = flowrate of effluent stream, cc/s.

CT = concentration of tritium in effluent stream, µCi/cc.

/Q = terrain adjusted relative concentration, s/m3. Relative air concentrations are calculated for the unrestricted area boundary in each of the 16 sectors as described in Section 7.9.2 using the historical meteorological data for the period 1986-2005 given in Table 7.2. For dose rate calculations, the highest value from the 16 unrestricted area boundary locations is used. The values for each of the sixteen sectors are given in Table 7.3 (maximum values are highlighted on the table).

= (/Q) for the inhalation and tritium ingestion pathways, RIT = inhalation dose factor for tritium, mrem/y per µCi/m3. Dose factor is calculated as described in Section 7.8.13.

RCPT = Grass-cow-milk dose factor for tritium, mrem/y per µCi/m3. Dose factor is calculated as described in Section 7.8.7..

Ci = concentration of nuclide i in effluent stream, µCi/cc.

RIi = inhalation dose factor for each identified nuclide i, mrem/y per µCi/m3. Dose factors are calculated as described in Section 7.8.13.

D/Q = terrain adjusted relative deposition, 1/m2. Relative deposition is calculated for the unrestricted area boundary in each of the 16 sectors as described in Section 7.9.3 using the historical meteorological data for the period 1986-2005 given in Table 7.2. For dose rate calculations, the highest value from the 16 unrestricted area boundary locations is used. The values for each of the sixteen sectors are given in Table 7.3 (maximum values are highlighted on the table).

RCPi = Grass-cow-milk dose factor for each identified nuclide i, m2-mrem/y per µCi/s. Dose factors are calculated as described in Section 7.8.1.

RMPi = Grass-beef dose factor for each identified nuclide i, m2-mrem/y per µCi/s. Dose factors are calculated as described in Section 7.8.3.

RVFi = Fresh leafy vegetable dose factor for each identified nuclide i, m2-mrem/y per µCi/s. Dose factors are calculated as described in Section 7.8.5.

RGi = ground plane dose factor for each identified nuclide i, m2-mrem/y per µCi/s. Dose factors are calculated as described in Section 7.8.14.

The maximum organ dose rate is selected from among the dose rates calculated for all the organs and all age groups. It is compared to the limit of 1500 mrem/y.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 113 of 205 7.3 DOSE - NOBLE GASES Doses are calculated for gamma and beta air doses due to exposure to a semi-infinite cloud of noble gases. These doses will be calculated at the UNRESTRICTED AREA BOUNDARY location with the highest terrain adjusted annual-average /Q based on 1986-2005 meteorological data (Table 7.2). This location is chosen from the UNRESTRICTED AREA BOUNDARY locations listed in Table 7.1.

Dispersion factors are calculated using the methodology described in Section 7.9.2.

No credit is taken for radioactive decay.

7.3.1 Gamma Dose to Air NUREG-0133 Section 5.3.1 provides the following equation for the calculation of the gamma air dose from noble gases:

D = k Mi [ ( ) Q + ( ) q ]+ [B Q Q v iv q v iv i is + bi q is ]

i Because there are no elevated release points, the terms subscripted s in the equation are not used.

Since all releases are considered to be long-term, the terms using lower case variables are not used.

Since WBN will be calculating a dose for each release made, the total release (Q) in the above equation is replaced by the release rate (Q) multiplied by the length of the release (T). The gamma air dose, Dg in mrad, is calculated for each release using the following equation:

D = 1.9 E 06 Q Qi DFi T (7.7) i where:

1.9E-06 = conversion factor, y/min.

/Q = highest terrain adjusted unrestricted area boundary annual-average relative concentration, s/m3 (from Table 7.3).

Qi = release rate for nuclide i, µCi/s.

DFi = dose conversion factor for external gamma for nuclide i (Table 7.4), mrad/y per µCi/m3.

T = duration of release, min.

The gamma air dose calculated by this method will be used in the cumulative dose calculations discussed in Section 7.3.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 114 of 205 7.3.2 Beta Dose to Air NUREG-0133 Section 5.3.1 provides the following equation for the calculation of the beta air dose from noble gases:

D = k Ni { [( ) Q + ( ) q ] + [( ) Q + ( ) q ]}

Q v iv Q v iv Q s is Q s is i

Because there are no elevated release points, the terms subscripted s in the equation are not used.

Since all releases are considered to be long-term, the terms using lower case variables are not used.

Since WBN will be calculating a dose for each release made, the total release (Q) in the above equation is replaced by the release rate (Q) multiplied by the length of the release (T). The beta air dose, Db in mrad, is calculated for each release using the following equation:

D = 1.9 E 06 Q Qi DFi T (7.8) i where:

1.9E-06 = conversion factor, y/min.

/Q = highest terrain adjusted unrestricted area boundary annual-average relative concentration, s/m3 (from Table 7.3).

Qi = release rate for nuclide i, µCi/s.

DFi = dose conversion factor for external beta for nuclide i, mrad/y per µCi/m3 (from Table 7.4).

T = duration of release, min.

The beta air dose calculated by this method will be used in the cumulative dose calculations discussed in Section 7.3.3.

7.3.3 Cumulative Dose - Noble Gas Quarterly and annual sums of all doses are calculated for each release as described below to compare to the limits listed in ODCM Control 1.2.2.2.

For noble gases, cumulative doses are calculated for gamma and beta air doses. Doses due to each release are summed with the doses for all previous releases in the current quarter or year to obtain cumulative quarterly and annual doses.

7.3.4 Comparison to Limits The cumulative calendar quarter and calendar year doses are compared to their respective limits in accordance with Surveillance Requirement 2.2.2.2. to determine compliance.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 115 of 205 7.4 DOSE DUE TO I-131, I-133, C-14, TRITIUM AND ALL RADIONUCLIDES IN PARTICULATE FORM WITH HALF-LIVES OF GREATER THAN 8 DAYS 7.4.1 Organ Dose Calculation Organ doses due to I-131, I-133, C-14, tritium and all radionuclides in particulate form with half-lives of greater than 8 days are calculated for each release for the critical receptor. The critical receptor is defined as the UNRESTRICTED AREA BOUNDARY in the sector with the highest annual average terrain adjusted /Q. The annual average /Q and D/Q are calculated using the methodology in Sections 7.9.2 and 7.9.3 using the historical 1986-2005 meteorological data (Table 7.2). A conservative assumption is used to select the dispersion factors for the critical receptor. The highest calculated /Q and D/Q values are chosen from Table 7.1 values after being multiplied by the applicable terrain adjustment factors (see Table 7.3), and may not be for the same compass sector. Pathways considered to exist at this location are inhalation, ground plane exposure, grass-cow-milk ingestion, grass-cow-beef ingestion and fresh leafy and stored vegetable ingestion. All age groups are considered (adult, teen, child and infant). Dose factors for these age groups and pathways are calculated as described in Section 7.8. For the ground exposure pathway, which has no age or organ specific dose factors, the total body dose will be added to the internal organ doses for all age groups.

NUREG-0133 Section 5.3.1 provides the following equation for the calculation of the organ dose from radioiodines, radioactive materials in particulate form with half-lives greater than 8 days:

D = k R i (Ws Qis + w s q is + Wv Qiv + w v q iv )

i Because there are no elevated release points, the terms subscripted s in the equation are not used.

Since all releases are considered to be long-term, the terms using lower case variables are not used.

Since WBN will be calculating a dose for each release made, the total release (Q) in the above equation is replaced by the release rate (Q) times the length of the release (T). The general equation for the calculation of organ dose is:

Di = 3.17 E 08 T i

R (W Q )

P Pi P i (7.9) where:

3.17E-08 = conversion factor, y/s T = duration of release, s.

RPi = dose factor for pathway P for each identified nuclide i, m2-mrem/y per µCi/s for ground plane, grass-milk animal-milk, grass-cow-beef, and vegetation pathways, and mrem/y per µCi/m3 for inhalation, C-14 and tritium ingestion pathways. Equations for calculating these dose factors are given in Section 7.8.

WP = dispersion factor for the location and pathway P (from Table 7.3),

= terrain adjusted /Q for the inhalation, C-14 and tritium ingestion pathways,

= terrain adjusted D/Q for the food and ground plane pathways, Qi = release rate for radionuclide i, µCi/s.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 116 of 205 From the four age groups considered, the maximum is determined by comparing all organ doses for all age groups. The age group with the highest single organ dose is selected as the critical age group. The organ doses for the critical age group will be used in the cumulative doses discussed in Section 7.4.2.

7.4.2 Cumulative Organ Doses Quarterly and annual sums of all doses are calculated for each release as described below to compare to the limits listed in ODCM Control 1.2.2.3.

For maximum organ dose, cumulative quarterly and annual doses are maintained for each of the eight organs considered. The cumulative dose is obtained by summing the doses for each organ of the critical age group (as calculated in Section 7.4.1) as determined for each release with the organ doses for all previous releases in the quarter or year to obtain the cumulative quarterly and annual doses. Thus, the cumulative organ doses will be conservative values, consisting of doses belonging to various age groups depending on the mix of radionuclides. The highest of these cumulative organ doses is used for the comparison to the limits described in ODCM Control 1.2.2.3.

7.4.3 Comparison to Limits The cumulative calendar quarter and calendar year doses are compared to their respective limits in accordance with ODCM Surveillance Requirement 2.2.2.3 to determine compliance.

7.5 DOSE PROJECTIONS In accordance with ODCM Surveillance Requirement 2.2.2.4.1, dose projections will be performed. This will be done for the gamma dose, the beta dose and the maximum organ dose.

(a + b )

D= x 31 + c (7.10) d where:

D = the 31-day dose projection, mrem.

a = the cumulative dose for the quarter, mrem.

b = the projected dose for this release (as calculated in Sections 7.4.1, 7.4.2 and 7.4.3), mrem.

c = any anticipated additional dose in the next month from other sources, mrem.

d = current number of days into the quarter up to the time of the release under consideration.

The 31-day projected dose will be compared to the limits given in ODCM Control 1.2.2.4 in accordance with Surveillance Requirement 2.2.2.4.1 to determine compliance.

7.6 GASEOUS RADWASTE TREATMENT SYSTEM DESCRIPTION The GASEOUS RADWASTE TREATMENT SYSTEM (GRTS) described in the WBN FSAR shall be maintained and operated to keep releases ALARA. A simplified flow diagram for the GRTS is given in Figure 7.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 117 of 205 7.7 DOSE CALCULATIONS FOR REPORTING A complete dose analysis utilizing the total estimated gaseous releases for each calendar quarter will be performed and reported as required in ODCM Administrative Control 5.2. All real pathways and receptor locations identified by the most recent land use survey are considered. In addition, actual meteorological data representative of a ground level release for each corresponding calendar quarter will be used. For iodine releases, it is assumed that half the iodine released is in organic form. Organic iodine causes a dose only by inhalation. For cow-milk and beef ingestion doses, the fraction of the time the animals are on stored feed (identified in the survey) is used in the calculation.

7.7.1 Noble Gas - Gamma and Beta Air Dose Regulatory Guide 1.109 Equation B-5 provides the following equation for the calculation of gamma and beta air doses from noble gas releases:

(7.11)

D= i (DF or DF )

im i i where:

im = concentration of nuclide i at location m, µCi/m3. Air concentrations are calculated as described by Equation 7.39.

DFi = dose conversion factor for external gamma for nuclide i, mrad/y per µCi/m3 (Table 7.4).

DFi = dose conversion factor for external beta for nuclide i, mrad/y per µCi/m3 (Table 7.4).

7.7.2 Noble Gas - Air Submersion Dose Regulatory Guide 1.109 Equation B-8 provides the following equation for the calculation of the total body submersion dose from noble gas releases:

D = SF im DFBi (7.12) i where:

SF = shielding factor. This factor is conservatively set equal to 1.0.

im = concentration of nuclide i at location m, µCi/m3. Air concentrations are calculated as described by Equation 7.39.

DFBi = total body dose conversion factor due to submersion in a semi-infinite cloud of noble gases for nuclide i, mrem/y per µCi/m3 (Table 7.4).

Regulatory Guide 1.109 Equation B-9 provides the following equation for the calculation of the skin submersion dose from noble gas releases:

D = 1.11 SF im DFi + im DFSi (7.13) i i where:

1.11 = the average ratio of tissue to air energy absorption coefficients, mrem/mrad.

SF = shielding factor. This factor is conservatively set equal to 1.0.

im = concentration of nuclide i at location m, µCi/m3. Air concentrations are calculated as described by Equation 7.39.

DFi = dose conversion factor for external gamma for nuclide i, mrad/y per µCi/m3 (Table 7.4).

DFSi = skin dose conversion factor due to submersion in a semi-infinite cloud of noble gases for nuclide i, mrem/y per µCi/m3 (Table 7.4).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 118 of 205 7.7.3 Radioiodine, Particulate, C-14, and Tritium - Maximum Organ Dose Regulatory Guide 1.109 Equations C-2, -4, and -13 provide the following equations for the calculation of doses from the release of iodine and particulate radionuclides:

D = SF C R (for ground contamination) i Gi Gi D = BR R (for inhalation) a i Pi i

D = R (U f C + U C + U C + U Pi va g iv ma im Fa Fi La f L C Li ) (for ingestion) i These three equations are combined into one equation for this presentation by dropping the subscripts on the dose factors, and substituting the appropriate dispersion factor (D/Q or /Q) multiplied by the total release (Q) for the concentration terms (C) as follows:

D = BR a Q Qi R Pi + S F QD Qi RGi + R Pi D Q

Qi (U va f g + U ma + U Fa + U La f L )

i i i The shielding factor (SF) is conservatively set equal to 1.0, therefore, that term drops out of the equation.

The vegetable fractions (f), ingestion rates (U) and breathing rate (BR) are included in the calculation of the dose factors, given in ODCM Sections 7.8.1 through 7.8.14, therefore, they may also be dropped from this equation. The equation then becomes:

D = Q Q i R Ii + QD Q i R Gi + QD Q i R Pi i i i Since the calculation of C-14 and tritium concentrations in vegetation are based on air concentration rather than ground deposition (Equations C-8 and C-9 in Regulatory Guide 1.109), separate terms are added to the equation to account for the C-14 and tritium ingestion dose pathways. In addition, a terrain adjustment factor (TAF) is added. Therefore the equation for calculating the organ dose, Dj in mrem, is:

D j = 3.17 E 08 ( ) R Q PT QT + ( ) R Q PC14 Q C14 +

( ) R D

Q Pi + ( )R D

Q Gi + ( )R Q Ii Qi (7.14)

P P i P where:

3.17E-08 = conversion factor, y/s.

D/Q = Terrain Adjusted Relative deposition for location under consideration, m-2. Relative deposition is calculated as described in Equation 7.41.

RPT = ingestion dose factor for pathway P for tritium, m2-mrem/y per µCi/s. Ingestion pathways available for consideration are the same as those listed above for RPi. Equations for calculating ingestion dose factors for tritium are given in Sections 7.8.7 through 7.8.12.

QT = adjusted release rate for tritium for location under consideration, µCi/s. The initial release rate is adjusted to account for decay between the release point and the location, depending on the frequency of wind speeds applicable to that sector. Hence, the adjusted release rate is equal to the actual release rate decayed for an average travel time during the period.

( )

9 QT = QTI f k exp - T x uk (7.15) k =1 where:

QTI = initial average release rate for tritium over the period, µCi/s.

fk = joint relative frequency of occurrence of winds in windspeed class k blowing toward this exposure point, expressed as a fraction.

= radiological decay constant for tritium, s-1.

T x = downwind distance, m.

uk = midpoint value of wind speed class interval k, m/s.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 119 of 205 RPC14 = ingestion dose factor for pathway P for C-14, m2-mrem/y per µCi/s. Ingestion pathways available for consideration are the same as those listed above for RPi. Equations for calculating ingestion dose factors for C-14 are given in Sections 7.8.15 through 7.8.20.

QC14 = adjusted release rate for C-14 for location under consideration, µCi/s. The initial release rate is adjusted to account for decay between the release point and the location, depending on the frequency of wind speeds applicable to that sector. Hence, the adjusted release rate is equal to the actual release rate decayed for an average travel time during the period.

( )

9 QC14 = QC14 I f k exp - C14 uxk k =1 where:

CC14I= initial average release rate for C-14 over the period, µCi/s.

fk = joint relative frequency of occurrence of winds in windspeed class k blowing toward this exposure point, expressed as a fraction.

lC14 = radiological decay constant for C-14, s-1.

x = downwind distance, m.

uk = midpoint value of wind speed class interval k, m/s.

Rpi = ingestion dose factor for pathway P for each identified nuclide i (except C-14 and tritium), m2-mrem/y per µCi/s. Ingestion pathways available for consideration include:

pasture grass-milk animal-milk ingestion - RCP (see Section 7.8.1).

stored feed-milk animal-milk ingestion - RCS (see Section 7.8.2).

pasture grass-beef ingestion - RMP (see Section 7.8.3).

stored feed-beef ingestion - RMS (see Section 7.8.4).

fresh leafy vegetable ingestion - RVF (see Section 7.8.5).

stored vegetable ingestion - RVS (see Section 7.8.6).

RGi = Dose factor for standing on contaminated ground, m2-mrem/y per µCi/s. The equation for calculating the ground plane dose factor is given in Section 7.8.14.

/Q = Relative concentration for location under consideration, s/m3. Relative concentrations are calculated as described by Equation 7.40.

RIi = Inhalation dose factor, mrem/y per µCi/m3. The equation for calculating the inhalation dose factor is given in Section 7.8.13.

Qi = adjusted release rate for nuclide i for location under consideration, µCi/s. Calculated in the same manner as QT above.

The highest organ dose for a real receptor is determined by summing the dose contribution from all identified pathways for each receptor including ground contamination, inhalation, vegetable ingestion (for identified garden locations), cow and/or goat milk ingestion (if a cow or goat is identified for the location),

beef ingestion (the beef ingestion dose for the location of highest beef dose for all receptors will be considered the beef dose for all receptors).

7.7.4 Population Doses The population dose is determined using Equation D-1 from Regulatory Guide 1.109:

D = k POPm D aij FPma m i For determining population doses to the 50-mile population around the plant, each compass sector is broken down into elements. These elements are defined in Table 7.5. Dispersion factors are calculated for the midpoint of each sector element (see Table 7.5). For each of these sector elements, an average dose is calculated, and then multiplied by the population in that sector element. The average dose is determined by multiplying the maximum individual dose for the sector by the ratio of the average to the maximum usage rates. For population doses resulting from ingestion, it is conservatively assumed that WBL-23-19 E2-121 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 120 of 205 all food eaten by the average individual is grown within the sector element. The general equation used for calculating the population dose in a given sector element is:

0.001 Dose pop =

TAF P RATIO P POPm FPa DOSE P where:

0.001 = conversion from mrem to rem.

TAF Terrain Adjustment Factor. Given the population centers are far from the site, the straight line dispersion factors provide conservative dose results when compared to a variable trajectory model.

RATIOP = ratio of average to maximum dose for pathway P. Maximum ingestion rates are given in Table 6.3. (Average ingestion rates are obtained from Reference 4, Table E-4.)

= 0.5 for submersion and ground exposure pathways, a shielding/occupancy factor.

= 1.0 for the inhalation pathway.

= 0.515, 0.515, 0.5, and 0.355 for milk, for infant, child, teen and adult, respectively. (It is assumed that the ratio of average to maximum infant milk ingestion rates is the same as that for child.)

= 1.0, 0.90, 0.91, 0.86 for beef ingestion, for infant, child, teen and adult, respectively.

= 1.0, 0.38, 0.38, 0.37 for vegetable ingestion, for infant, child, teen and adult, respectively. (It is assumed that the vegetable ingestion ratio also applies to leafy vegetables.)

POPm = the population of the sector element m, persons (Table 7.6).

FPa = fraction of the population belonging to each age group.

= 0.015, 0.167, 0.153, 0.665 for infant, child, teen and adult, respectively (fractions taken from Reference 21, Table 3.39).

DOSEP = the dose for pathway P to the maximum individual at the location under consideration, mrem (as described in Sections 7.7.1, 7.7.2, and 7.7.3). For ingestion pathways, this dose is multiplied by an average decay correction to account for decay as the food is moved through the food distribution cycle. This average decay correction, ADC, is defined as follows:

For milk and vegetables:

ADC = exp( i t d ) (7.17)

For beef:

exp( i td ) i tcb ADC = (7.18) 1 exp( i tcb )

where:

i = decay constant for nuclide i, s-1.

td = distribution time for food product under consideration (values from Reference 4, Table D-1).

= 1.21E+06 s (14 d) for vegetables.

= 3.46E+05 s (4 d) for milk.

= 7d for beef tcb = time to consume a whole beef, as described in Section 7.8.3.

For beef ingestion, the additional factors in the calculation of ADC negate the integration of the dose term over the period during which a whole beef is consumed, for the calculation of population dose. In other words, this assumes that the maximum individual freezes and eats a whole beef, while the average individual buys smaller portions at a time.

Population doses are summed over all sector elements to obtain a total population dose for the 50-mile population.

WBL-23-19 E2-122 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 121 of 205 7.7.5 Reporting of Doses The calculated quarterly doses and calculated population doses described in Section 7.7 are reported in the Annual Radioactive Effluent Release Report as required by ODCM Administrative Control 5.2.

WBL-23-19 E2-123 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 122 of 205 7.7.6 Dose to a MEMBER OF THE PUBLIC Inside the CONTROLLED or RESTRICTED AREA The Basis for ODCM Control 1.2.2.1 states that for MEMBERS OF THE PUBLIC who may at times be within the CONTROLLED or RESTRICTED AREA, the occupancy factor of that MEMBER OF THE PUBLIC will usually be sufficiently low to compensate for any increase in the atmospheric dispersion factor above that for the UNRESTRICTED AREA BOUNDARY. This basis also states that examples of calculations for such MEMBERS OF THE PUBLIC will be given in the ODCM.

Calculations are presented in Section 12.4 of the WBN UFSAR which estimate the annual doses at the RESTRICTED AREA BOUNDARY (WBN UFSAR Table 12.4-2). The total dose rate is the sum of the adult whole body inhalation dose rate, the gamma dose rate from the plume and ground contamination, and the gamma dose rate from outdoor storage tanks. As indicated in the UFSAR, the highest total dose rate at the RESTRICTED AREA BOUNDARY is 105 mrem/y, based on a continuous 2000 h/y occupancy.

Use of a more realistic occupancy, reflective of the transient traffic expected for this location, would result in a much lower dose estimate. It is, therefore, considered highly unlikely that a member of the public would receive greater than 100 mrem/y at or beyond the RESTRICTED AREA BOUNDARY.

In addition to this calculation, the dose to these MEMBERS OF THE PUBLIC (obtained from dosimeters deployed near the UNRESTRICTED AREA BOUNDARY and from estimates of the dose from gaseous effluents) will be reviewed on an annual basis to ensure that the actual exposure to any individuals is less than 100 mrem/y for these locations. The results of this review will be included in the Annual Radiological Effluent Report pursuant to ODCM Administrative Control 5.2.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 123 of 205 7.8 GASEOUS RELEASES - DOSE FACTORS 7.8.1 Pasture Grass-Cow/Goat-Milk Ingestion Dose Factors - RCPi (m2-mrem/y per µCi/s)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the milk pathway, Regulatory Guide 1.109 Equations C-5 and C-10 are inserted into the above equation to yield the following:

r [1 - exp( E t e )] B iv [1 exp( t b )]

D = DFL U ap Fmi Q f exp(- t fm ) d i exp(- t h ) + exp(- t h )

YV E P Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variable di (equal to the product of the release rate (Q) and the deposition factor (D/Q)), the factors remaining in the above equation are defined as the dose factor. For pasture grass, the variable th is defined as zero in Regulatory Guide 1.109, therefore that exponential term drops out of the equation. The resulting dose factor equation is:

r [1 - exp( E t ep )] Biv [1 exp( i tb )]

RCP i = 106 DFLiaj U ap Fmi Qf exp(- i t fm ) f p + (7.19)

YP E Pi where:

106 = conversion factor, pCi/µCi.

DFLiaj = ingestion dose conversion factor for nuclide i, age group a, organ j, mrem/pCi (Table 6.4).

Uap = milk ingestion rate for age group a, L/y.

Fmi = transfer factor for nuclide i from animal's feed to milk, d/L(Table 6.2).

Qf = animal's consumption rate, kg/d.

i = decay constant for nuclide i, s-1 (Table 6.2).

tfm = transport time from milking to receptor, s.

fp = fraction of time animal spends on pasture, dimensionless.

r = fraction of activity retained on pasture grass, dimensionless.

E = the effective decay constant, due to radioactive decay and weathering, s-1.

= i + W.

W = weathering decay constant for leaf and plant surfaces, s-1.

tep = time pasture is exposed to deposition, s.

Yp = agricultural productivity by unit area of pasture grass, kg/m2.

Biv = transfer factor for nuclide i from soil to vegetation, pCi/kg (wet weight of vegetation) per pCi/kg (dry soil). (Table 6.2) tb = time period over which accumulation on the ground is evaluated, s.

P = effective surface density of soil, kg/m2.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 124 of 205 7.8.2 Stored Feed-Cow/Goat-Milk Ingestion Dose Factors - RCSi (m2-mrem/y per µCi/s)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the milk pathway, Regulatory Guide 1.109 Equations C-5 and C-10 are inserted into the above equation to yield the following:

r [1 - exp( E t e )] B iv [1 exp( t b )]

D = DFL U ap Fm Q F exp(- t fm ) d i + exp(- t h )

YV E P Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variable di (equal to the product of the release rate (Q) and the deposition factor (D/Q)), the factors remaining in the above equation are defined as the dose factor. For stored feed, it is assumed that the milk animals will be eating the feed continuously from the time of harvest, therefore the decay term for the consumption of stored feed used is not that given in Reg. Guide 1.109 for the end of the period between harvest and consumption, but is instead an integrated decay over the period (Reference 10). The resulting dose factor is:

1 - exp( i t csf ) r [1 - exp( E t e )] Biv [1 exp( i tb )]

RCS i = 106 DFLiaj U ap Fmi Qf exp(- i t fm ) fs + (7.20) tcsf i Ysf E Pi where:

106 = conversion factor, pCi/µCi.

DFLiaj = ingestion dose conversion factor for nuclide i, age group a, organ j, mrem/pCi (Table 6.4).

Uap = milk ingestion rate for age group a, L/y.

Fmi = transfer factor for nuclide i from animal's feed to milk, d/L (Table 6.2).

Qf = animal's consumption rate, kg/d.

fs = fraction of time animal spends on stored feed, dimensionless.

i = decay constant for nuclide i, s-1 (Table 6.2).

tfm = transport time from milking to receptor, s.

tcsf = time between harvest of stored feed and consumption by animal, s.

r = fraction of activity retained on pasture grass, dimensionless.

E = the effective decay constant, due to radioactive decay and weathering, s-1

= i + W.

W = weathering decay constant for leaf and plant surfaces, s-1.

te = time stored feed is exposed to deposition, s.

Ysf = agricultural productivity by unit area of stored feed, kg/m2.

Biv = transfer factor for nuclide i from soil to vegetation, pCi/kg (wet weight of vegetation) per pCi/kg (dry soil). (Table 6.2) tb = time period over which accumulation on the ground is evaluated, s.

P = effective surface density of soil, kg/m2.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

WBL-23-19 E2-126 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 125 of 205 7.8.3 Pasture Grass-Beef Ingestion Dose Factors - RMPi (m2-mrem/y per µCi/s)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the beef pathway, Regulatory Guide 1.109 Equations C-5 and C-12 are inserted into the above equation to yield the following:

r [1 - exp( E t e )] B iv [1 exp( t b )]

D = DFL U ap Ff Q F exp(- t s ) d i + exp(- t h )

YV E P Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variable di (equal to the product of the release rate (Q) and the deposition factor (D/Q)), the factors remaining in the above equation are defined as the dose factor. In addition, a factor is added to account for the decay during the time the beef is being consumed. This term assumes that the individual slaughters and eats the animal over a period of time (tcb) (Reference 10). For pasture grass, the variable th is defined as zero in Regulatory Guide 1.109, therefore that exponential term drops out of the equation. The resulting dose factor is:

[1 - exp(- i t cb )] r [1 - exp( E t ep )] Biv [1 exp( i tb )] (7.21)

RMP i = 106 DFLiaj U am Ffi Qf exp( i t s ) f p +

i t cb Y p E Pi where:

106 = conversion factor, pCi/µCi.

DFLiaj = ingestion dose conversion factor for nuclide i, age group a, organ j, mrem/pCi (Table 6.4).

Uam = beef ingestion rate for age group a, kg/y.

Ffi = transfer factor for nuclide i from cow's feed to beef, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

i = decay constant for nuclide i, s-1 (Table 6.2).

tcb = time for receptor to consume a whole beef, s.

ts = transport time from slaughter to consumer, s.

fp = fraction of time cow spends on pasture, dimensionless.

r = fraction of activity retained on pasture grass, dimensionless.

E = the effective decay constant, due to radioactive decay and weathering, s-1, equal to i + W.

W = weathering decay constant for leaf and plant surfaces, s-1.

tep = time pasture is exposed to deposition, s.

Yp = agricultural productivity by unit area of pasture grass, kg/m2.

Biv = transfer factor for nuclide i from soil to vegetation, pCi/kg (wet weight of vegetation) per pCi/kg (dry soil). (Table 6.2) tb = time over which accumulation on the ground is evaluated, s.

P = effective surface density of soil, kg/m2.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 126 of 205 7.8.4 Stored Feed-Beef Ingestion Dose Factors - RMSi (m2-mrem/y per µCi/s)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the beef pathway, Regulatory Guide 1.109 Equations C-5 and C-12 are inserted into the above equation to yield the following:

D = DFL U ap Ff Q F exp( -t s ) d i

[

r 1 - exp( E t e )

] +

[

Biv 1 exp( tb ) ] exp(-t )

h YV E P Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variable di (equal to the product of the release rate (Q) and the deposition factor (D/Q)), the factors remaining in the above equation are defined as the dose factor. In addition, factors are added to account for the decay during the time the animals are consuming the stored feed (tcsf) and during the time period of over which the beef is being consumed (tcb) (Reference 10). The resulting dose factor is:

[1 - exp(- i t cb )] [1 - exp(- i t csf )] r [1 - exp( E t e )] Biv [1 exp( i tb )] (7.22)

RMS i = 106 DFLiajU am FfiQf exp( i t s ) fs +

i t cb i t csf Ysf E Pi where:

106 = conversion factor, pCi/µCi.

DFLiaj = ingestion dose conversion factor for nuclide i, age group a, organ j, mrem/pCi (Table 6.4).

Uam = beef ingestion rate for age group a, kg/y.

Ffi = transfer factor for nuclide i from cow's feed to beef, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

i = decay constant for nuclide i, s-1 (Table 6.2).

tcb = time for receptor to consume a whole beef, s.

ts = transport time from slaughter to consumer, s.

fs = fraction of time cow spends on stored feed, dimensionless.

tcsf = time between harvest of stored feed and consumption by cow, s.

r = fraction of activity retained on pasture grass, dimensionless.

te = time stored feed is exposed to deposition, s.

Ysf = agricultural productivity by unit area of stored feed, kg/m2.

E = the effective decay constant, due to radioactive decay and weathering, s-1,

= i+W.

W = weathering decay constant for leaf and plant surfaces, s-1.

Biv = transfer factor for nuclide i from soil to vegetation, pCi/kg (wet weight of vegetation) per pCi/kg (dry soil). (Table 6.2) tb = time over which accumulation on the ground is evaluated, s.

P = effective surface density of soil, kg/m2.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 127 of 205 7.8.5 Fresh Leafy Vegetable Ingestion Dose Factors - RVFi (m2-mrem/y per µCi/s)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the vegetable pathway, Regulatory Guide 1.109 Equation C-5 is inserted into the above equation to yield the following:

r [1 - exp( E t e )] Biv [1 exp( t b )]

D = DFL UFLa d i + exp(- t hc )

YV E P Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variable di (equal to the product of the release rate (Q) and the deposition factor (D/Q)), the factors remaining in the above equation are defined as the dose factor. Thus, the dose factor is:

r [1 - exp( E t e )] B iv [1 exp( i t b )]

RVFi = 10 6 DFL iaj exp( i t hc ) U FL a FL + (7.23)

Yf E P i where:

106 = conversion factor, pCi/µCi.

DFLiaj = ingestion dose conversion factor for nuclide i, age group a, organ j, mrem/pCi (Table 6.4).

i = decay constant for nuclide i, s-1 (Table 6.2).

thc = average time between harvest of vegetables and their consumption and/or storage, s.

UFLa = consumption rate of fresh leafy vegetables by the receptor in age group a, kg/y.

fL = fraction of fresh leafy vegetables grown locally, dimensionless.

r = fraction of deposited activity retained on vegetables, dimensionless.

E = the effective decay constant, due to radioactive decay and weathering, s-1.

= i + W W = decay constant for removal of activity on leaf and plant surfaces by weathering, s-1.

te = exposure time in garden for fresh leafy and/or stored vegetables, s.

Yf = agricultural yield for fresh leafy vegetables, kg/m2.

Biv = transfer factor for nuclide i from soil to vegetables, pCi/kg (wet weight of vegetation) per pCi/kg (dry soil). (Table 6.2) tb = time period over which accumulation on the ground is evaluated, s.

P = effective surface density of soil, kg/m2.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

WBL-23-19 E2-129 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 128 of 205 7.8.6 Stored Vegetable Ingestion Dose Factors - RVSi m2-mrem/y per µCi/s)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the vegetable pathway, Regulatory Guide 1.109 Equation C-5 is inserted into the above equation to yield the following:

r [1 - exp( E t e )] Biv [1 exp( t b )]

D = DFL UFL a d i + exp(- t hc )

YV E P Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variable di (equal to the product of the release rate (Q) and the deposition factor (D/Q)), the factors remaining in the above equation are defined as the dose factor. One additional decay term is added to account for the decay during the period of time after harvest during which the food is consumed (tsv); this term assumes that the stored vegetables are eaten throughout the storage period (Reference 10). Thus, the dose factor is:

[1 - exp( i t sv )] r [1 - exp( E t e )] B iv [1 exp( i t b )]

RVSi = 10 6 DFL iaj exp( i t hc ) U Sa f g + (7.24) i t sv Ysv E P i where:

106 = conversion factor, pCi/µCi.

DFLiaj = ingestion dose conversion factor for nuclide i, age group a, organ j, mrem/pCi (Table 6.4).

i = decay constant for nuclide i, s-1 (Table 6.2).

thc = average time between harvest of vegetables and their consumption and/or storage, s.

USa = consumption rate of stored vegetables by the receptor in age group a, kg/y.

fg = fraction of stored vegetables grown locally, dimensionless.

tsv = time between storage of vegetables and their consumption, s.

r = fraction of deposited activity retained on vegetables, dimensionless.

E = the effective decay constant, due to radioactive decay and weathering, s-1.

= i + W W = decay constant for removal of activity on leaf and plant surfaces by weathering, s-1.

te = exposure time in garden for fresh leafy and/or stored vegetables, s.

Ysv = agricultural yield for stored vegetables, kg/m2.

Biv = transfer factor for nuclide i from soil to vegetables, pCi/kg (wet weight of vegetation) per pCi/kg (dry soil). (Table 6.2) tb = time period over which accumulation on the ground is evaluated, s.

P = effective surface density of soil, kg/m2.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 129 of 205 7.8.7 Tritium-Pasture Grass-Cow/Goat-Milk Dose Factor - RCPT (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the milk pathway, Regulatory Guide 1.109 Equations C-9 and C-10 are inserted into the above equation to yield the following:

0.5 D = DFL U ap Fm Qf exp(- t fm ) QT 0.75 H Q

Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. The resulting dose factor equation is:

0.5 RCPT = 103 106 DFLTaj FmT Qf U ap 0.75 f p exp(- T t fm ) (7.25)

H where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLTaj = ingestion dose conversion factor for tritium for age group a, organ j, mrem/pCi (Table 6.4).

FmT = transfer factor for tritium from animal's feed to milk, d/L (Table 6.2).

Qf = animal's consumption rate, kg/d.

Uap = milk ingestion rate for age group a, L/y.

0.75 = the fraction of total feed that is water.

0.5 = the ratio of the specific activity of the feed grass water to the atmospheric water.

H = absolute humidity of the atmosphere, g/m3.

fp = fraction of time animal spends on pasture, dimensionless.

T = decay constant for tritium, s-1 (Table 6.2).

tfm = transport time from milking to receptor, s.

WBL-23-19 E2-131 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 130 of 205 7.8.8 Tritium-Stored Feed-Cow/Goat-Milk Dose Factor - RCST (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the milk pathway, Regulatory Guide 1.109 Equations C-9 and C-10 are inserted into the above equation to yield the following:

0.5 D = DFL U ap Fm Qf exp(- t fm ) QT 0.75 H Q

Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. In addition, a factor is added to account for the decay during the time the animals are consuming the stored feed (Reference 10). The resulting dose factor is:

0.5 [1 - exp(- T tcsf )]

RCST = 103 106 DFLTaj FfT Qf U ap 0.75 fs exp(- T t fm ) (7.26)

H T tcsf where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLTaj = ingestion dose conversion factor for H-3 for age group a, organ j, mrem/pCi (Table 6.4).

FfT = transfer factor for H-3 from cow's feed to beef, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

Uap = milk ingestion rate for age group a, L/y.

0.75 = the fraction of total feed that is water.

0.5 = the ratio of the specific activity of the feed grass water to the atmospheric water.

H = absolute humidity of the atmosphere, g/m3.

fs = fraction of time cow spends on stored feed, dimensionless.

T = decay constant for tritium, s-1 (Table 6.2).

tfm = transport time from milking to receptor, s.

tcsf = time to consume stored feed, s.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 131 of 205 7.8.9 Tritium-Pasture Grass-Beef Dose Factor - RMPT (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the beef pathway, Regulatory Guide 1.109 Equations C-9 and C-10 are inserted into the above equation to yield the following:

0.5 D = DFL U ap Ff Qf exp(- t s ) QT 0.75 H Q

Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. Two decay terms are added to the equation to account for the decay during the time the pasture is exposed to the activity in the air, and the decay during the time the beef is being consumed (Reference 10). The resulting dose factor is:

0.5 [1 - exp(- T t ep )] [1 - exp(- T t cb )] (7.27)

RMPT = 103 106 DFL Taj FfT Q f U am 0.75 f p exp(- T t s )

H T tep T tcb where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLTaj = ingestion dose conversion factor for H-3 for age group a, organ j, mrem/pCi (Table 6.4).

FfT = transfer factor for H-3 from cow's feed to beef, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

Uam = beef ingestion rate for age group a, kg/y.

0.75 = the fraction of total feed that is water.

0.5 = the ratio of the specific activity of the feed grass water to the atmospheric water.

H = absolute humidity of the atmosphere, g/m3.

fp = fraction of time cow spends on pasture, dimensionless.

T = decay constant for tritium, s-1 (Table 6.2).

ts = transport time from slaughter to consumer, s.

tep = time pasture is exposed to deposition, s.

tcb = time for receptor to consume a whole beef, s.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 132 of 205 7.8.10 Tritium-Stored Feed-Beef Dose Factor - RMST (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the beef pathway, Regulatory Guide 1.109 Equations C-9 and C-10 are inserted into the above equation to yield the following:

0.5 D = DFL U am Ff Qf exp(- t s ) QT 0.75 Q H Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. Two decay terms are added to the equation to account for the decay during the time the pasture is exposed to the activity in the air, and the decay during the time the beef is being consumed (Reference 10). The resulting dose factor is:

0.5 [1 - exp(- T tcsf )] [1 - exp(- T tcb )]

RMST = 103 106 DFLTaj FfT Q f U am 0.75 f s exp(- T t s ) (7.28)

H T tcsf T tcb where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLTaj = ingestion dose conversion factor for H-3 for age group a, organ j, mrem/pCi (Table 6.4).

FfT = transfer factor for H-3 from cow's feed to beef, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

Uam = beef ingestion rate for age group a, kg/y.

0.75 = the fraction of total feed that is water.

0.5 = the ratio of the specific activity of the feed grass water to the atmospheric water.

H = absolute humidity of the atmosphere, g/m3.

fs = fraction of time cow spends on stored feed, dimensionless.

T = decay constant for tritium, s-1 (Table 6.2).

ts = transport time from slaughter to consumer, s.

tcsf = time to consume stored feed, s.

tcb = time for receptor to consume a whole beef, s.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

WBL-23-19 E2-134 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 133 of 205 7.8.11 Tritium-Fresh Leafy Vegetable Dose Factor - RVFT (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the vegetable pathway, Regulatory Guide 1.109 Equation C-9 is inserted into the above equation to yield the following:

0.5 D = DFL U ap exp (- t hc ) QT 0.75 H Q

Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. The resulting dose factor is:

0.5 RVFT = 103 106 DFLTaj 0.75 U FLa f L exp(- T t hc ) (7.29)

H where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLTaj = ingestion dose conversion factor for tritium for age group a, organ j, mrem/pCi (Table 6.4).

0.75 = the fraction of total vegetation that is water.

0.5 = the ratio of the specific activity of the vegetables water to the atmospheric water.

H = absolute humidity of the atmosphere, g/m3.

UFLa = consumption rate of fresh leafy vegetables by the receptor in age group a, kg/y.

fL = fraction of fresh leafy vegetables grown locally, dimensionless.

T = decay constant for tritium, s-1 (Table 6.2).

thc = time between harvest of vegetables and their consumption and/or storage, s.

NOTE: Factors defined above which do not reference a table for their numerical values are given in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 134 of 205 7.8.12 Tritium-Stored Vegetable Dose Factor - RVST (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the vegetable pathway, Regulatory Guide 1.109 Equation C-9 is inserted into the above equation to yield the following:

0.5 D = DFL U ap exp(- t hc ) QT 0.75 H Q

Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. An additional decay term is added to account for the decay during the time the vegetables are stored (this term assumes that the vegetables are being eaten during the storage period)

(Reference 10). The resulting dose factor is:

0.5 [1 - exp(- T tsv )]

RVST = 103 106 DFLTaj 0.75 U Sa f g exp(- T t hc ) (7.30)

H T tsv where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLTaj = ingestion dose conversion factor for tritium for age group a, organ j, mrem/pCi (Table 6.4).

0.75 = the fraction of total vegetation that is water.

0.5 = the ratio of the specific activity of the vegetation water to the atmospheric water.

H = absolute humidity of the atmosphere, g/m3.

USa = consumption rate of stored vegetables by the receptor in age group a, kg/y.

fg = fraction of stored vegetables grown locally, dimensionless.

T = decay constant for tritium, s-1 (Table 6.2).

tsv = time between harvest of stored vegetables and their consumption and/or storage, s.

thc = time between harvest of vegetables and their storage, s.

WBL-23-19 E2-136 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 135 of 205 7.8.13 Inhalation Dose Factors - RIi (mrem/y per µCi/m3)

The inhalation dose factors are calculated using the equation provided in NUREG-0133, Section 5.3.1.1.

R Ii = 106 DFAiaj BR a (7.31) where:

106 = conversion factor, pCi/µCi.

DFAiaj = inhalation dose conversion factor for nuclide i, age group a and organ j, mrem/pCi (Table 7.7).

BRa = breathing rate for age group a, m3/y (Table 6.3).

7.8.14 Ground Plane Dose Factors - RGi (m2-mrem/y per µCi/s)

The ground plane dose factors are calculated using the equation provided in NUREG-0133, Section 5.3.1.2. The shielding factor in that equation is conservatively assumed to be 1.0.

RGi = 10 6 8760 DFG ij 1 i [1 - exp(- i t b ) ] (7.32) where:

106 = conversion factor, pCi/µCi.

8760 = conversion factor, h/y.

DFGij = dose conversion factor for standing on contaminated ground for nuclide i and organ j (total body and skin), mrem/h per pCi/m2 (Table 6.6).

i = decay constant of nuclide i, s-1 (Table 6.2).

tb = time period over which the ground accumulation is evaluated, s (Table 6.3).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 136 of 205 7.8.15 C-14-Pasture Grass-Cow/Goat-Milk Dose Factor - RCPC14 (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the milk pathway, Regulatory Guide 1.109 Equations C-8 and C-10 are inserted into the above equation to yield the following:

0.11 D = DFL U ap Fm Qf exp (- t fm ) QC14 Q 0.16 Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. The resulting dose factor equation is:

0.11 RCPC14 = 10 3 10 6 DFL C14aj FmC14 Q f U ap f p exp(- C14 t fm ) (7.33) 0.16 where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLC14aj = ingestion dose conversion factor for carbon 14 for age group a, organ j, mrem/pCi (Table 6.4).

FmC14 = transfer factor for carbon 14 from animal's feed to milk, d/L (Table 6.2).

Qf = animal's consumption rate, kg/d.

Uap = milk ingestion rate for age group a, L/y.

0.11 = the fraction of total plant mass that is natural carbon, dimensionless.

0.16 = is equal to the concentration of natural carbon in the atmosphere, in g/m3.

fp = fraction of time animal spends on pasture, dimensionless.

C14 = decay constant for carbon 14, s-1 (Table 6.2).

tfm = transport time from milking to receptor, s.

NOTE: Factors defined above which do not reference a table for their numerical values, are listed in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 137 of 205 7.8.16 C-14-Stored Feed-Cow/Goat-Milk Dose Factor - RCSC14 (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the milk pathway, Regulatory Guide 1.109 Equations C-8 and C-10 are inserted into the above equation to yield the following:

0.11 D = DFL U ap Fm Qf exp (- t fm ) QC14 Q 0.16 Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. In addition, a factor is added to account for the decay during the time the animals are consuming the stored feed (Reference 10). The resulting dose factor equation is:

0.11 [

1 - exp(- C14 t csf )]

RCST = 10 3 10 6 DFL C14aj FmC14 Q f U am f s exp(- C14 t fm ) (7.34) 0.16 C14 t csf where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLC14aj = ingestion dose conversion factor for carbon 14 for age group a, organ j, mrem/pCi (Table 6.4).

FmC14 = transfer factor for carbon 14 from cow's feed to milk, d/L (Table 6.2).

Qf = animal's consumption rate, kg/d.

Uap = milk ingestion rate for age group a, L/y.

0.11 = the fraction of total plant mass that is natural carbon, dimensionless.

0.16 = is equal to the concentration of natural carbon in the atmosphere, in g/m3.

fs = fraction of time animal spends on stored feed, dimensionless.

C14 = decay constant for carbon 14, s-1 (Table 6.2).

tcsf = time between harvest of stored feed and consumption by animal, s.

tfm = transport time from milking to receptor, s.

NOTE: Factors defined above which do not reference a table for their numerical values, are listed in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 138 of 205 7.8.17 C-14-Pasture Grass-Beef Dose Factor - RMPC14 (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the beef pathway, Regulatory Guide 1.109 Equations C-8 and C-10 are inserted into the above equation to yield the following:

0.11 D = DFL U ap Fm Qf exp (- t fm ) QC14 Q 0.16 Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. Two decay terms are added to the equation to account for the decay during the time the pasture is exposed to the activity in the air, and the decay during the time the beef is being consumed (Reference 10). The resulting dose factor is:

0.11 [ ]

1 - exp(- C14 t ep ) [1 - exp(- C14 t cb )] (7.35)

R MPC14 = 10 3 10 6 DFL C14aj FfC14 Q f U am f p exp(- C14 t s )

0.16 C14 t ep C14 t cb where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLC14aj = ingestion dose conversion factor for carbon 14 for age group a, organ j, mrem/pCi (Table 6.4).

FfC14 = transfer factor for carbon 14 from cow's feed to meat, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

Uam = meat ingestion rate for age group a, kg/y.

0.11 = the fraction of total plant mass that is natural carbon, dimensionless.

0.16 = is equal to the concentration of natural carbon in the atmosphere, in g/m3.

fp = fraction of time cow spends on pasture, dimensionless.

C14 = decay constant for carbon 14, s-1 (Table 6.2).

ts = transport time from slaughter to consumer, s.

tep = time pasture is exposed to deposition, s.

tcb = time for receptor to consume a whole beef, s.

NOTE: Factors defined above which do not reference a table for their numerical values, are listed in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 139 of 205 7.8.18 C-14-Stored Feed-Beef Dose Factor - RMSC14 (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the beef pathway, Regulatory Guide 1.109 Equations C-8 and C-10 are inserted into the above equation to yield the following:

0.11 D = DFL U ap Fm Qf exp (- t fm ) QC14 Q 0.16 Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. Two decay terms are added to the equation to account for the decay during the time the pasture is exposed to the activity in the air, and the decay during the time the beef is being consumed (Reference 10). The resulting dose factor is:

0.11 [ ]

1 - exp(- C14tcsf ) [1 - exp(- C14tcb )] (7.36)

RMSC14 = 103 106 DFLC14aj FfC14 Q f U am f p exp(- C14 t s )

0.16 C14tcsf C14tcb where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLC14aj = ingestion dose conversion factor for carbon 14 for age group a, organ j, mrem/pCi (Table 6.4).

FfC14 = transfer factor for carbon 14 from cow's feed to meat, d/kg (Table 6.2).

Qf = cow's consumption rate, kg/d.

Uam = meat ingestion rate for age group a, kg/y.

0.11 = the fraction of total plant mass that is natural carbon, dimensionless.

0.16 = is equal to the concentration of natural carbon in the atmosphere, in g/m3.

fs = fraction of time cow spends on stored feed, dimensionless.

C14 = decay constant for carbon 14, s-1 (Table 6.2).

ts = transport time from slaughter to consumer, s.

tcsf = time between harvest of stored feed and consumption by animal, s.

tcb = time for receptor to consume a whole beef, s.

NOTE: Factors defined above which do not reference a table for their numerical values, are listed in Table 6.3.

WBL-23-19 E2-141 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 140 of 205 7.8.19 C-14-Fresh Leafy Vegetable Dose Factor - RVFC14 (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the vegetable pathway, Regulatory Guide 1.109 Equation C-8 is inserted into the above equation to yield the following:

0.11 D = DFL U ap exp (- t hc ) QC14 Q 0.16 Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. The resulting dose factor is:

0.11 RVFC14 = 10 3 10 6 DFL C14aj U FLa f L exp(- C14 t hc ) (7.37) 0.16 where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLC14aj = ingestion dose conversion factor for carbon 14 for age group a, organ j, mrem/pCi (Table 6.4).

0.11 = the fraction of total plant mass that is natural carbon, dimensionless.

0.16 = is equal to the concentration of natural carbon in the atmosphere, in g/m3.

UFLa = consumption rate of fresh leafy vegetables by the receptor in age group a, kg/y.

fL = fraction of fresh leafy vegetables grown locally, dimensionless.

C14 = decay constant for carbon 14, s-1 (Table 6.2).

thc = time between harvest of vegetables and their consumption and/or storage, s.

NOTE: Factors defined above which do not reference a table for their numerical values, are listed in Table 6.3.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 141 of 205 7.8.20 C-14-Stored Vegetables Dose Factor - RVSC14 (mrem/y per µCi/m3)

The general dose equation stated in Regulatory Guide 1.109 for calculating the annual dose from consuming foods containing atmospherically released radionuclides (Equation C-13) is:

Dose(D) = Dose Conversion Factor(DFL)*Usage Rate(U)*Radionuclide Concentration in Media(C)

For the vegetable pathway, Regulatory Guide 1.109 Equation C-9 is inserted into the above equation to yield the following:

0.11 D = DFL U ap exp (- t hc ) QC14 Q 0.16 Since the dose equation in Sections 7.4 and 7.7.3 (Equations 7.9 and 7.14) contain the variables for the release rate (Q) and the dispersion factor (/Q), the factors remaining in the above equation are defined as the dose factor. An additional decay term is added to account for the decay during the time the vegetables are stored (this term assumes that the vegetables are being eaten during the storage period)

(Reference 10). The resulting dose factor is:

0.11 [1 - exp(- C14 t sv )]

RVSC14 = 10 3 10 6 DFL C14aj U Sa f g exp(- C14 t hc ) (7.38) 0.16 C14 t sv where:

103 = conversion factor, g/kg.

106 = conversion factor, pCi/µCi.

DFLC14aj = ingestion dose conversion factor for carbon 14 for age group a, organ j, mrem/pCi (Table 6.4).

0.11 = the fraction of total plant mass that is natural carbon, dimensionless.

0.16 = is equal to the concentration of natural carbon in the atmosphere, in g/m3.

USa = consumption rate of stored vegetables by the receptor in age group a, kg/y.

fg = fraction of stored vegetables grown locally, dimensionless.

C14 = decay constant for carbon 14, s-1 (Table 6.2).

tsv = time between harvest of stored vegetables and their consumption and/or storage, s.

thc = time between harvest of vegetables and their storage, s.

NOTE: Factors defined above which do not reference a table for their numerical values, are listed in Table 6.3.

WBL-23-19 E2-143 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 142 of 205 7.9 DISPERSION METHODOLOGY Dispersion factors are calculated for radioactive effluent releases using hourly average meteorological data consisting of wind speed and direction measurements at 10m and temperature measurements at 10m and 46m.

A sector-average dispersion equation consistent with Regulatory Guide 1.111 is used. The dispersion model considers plume depletion (using information from Figure 7.4), and building wake effects. Terrain effects on dispersion are considered as described in Section 7.9.4.

Hourly average meteorological data are expressed as a joint-frequency distribution of wind speed, wind direction, and atmospheric stability. The joint-frequency distribution which represents the historical meteorological data for the period January 1986 to December 2005 is given in Table 7.2.

The wind speed classes that are used are as follows:

Number Range (m/s) Midpoint (m/s) 1 <0.3 0.13 2 0.3-0.6 0.45 3 0.7-1.5 1.10 4 1.6-2.4 1.99 5 2.5-3.3 2.88 6 3.4-5.5 4.45 7 5.6-8.2 6.91 8 8.3-10.9 9.59 9 >10.9 10.95 The stability classes that will be used are the standard Pasquill A through G classifications. The stability classes 1-7 will correspond to A=1, B=2, ..., G=7.

7.9.1 Air Concentration -

Air concentrations of nuclides at downwind locations are calculated using the following equation:

1 7 f kl Q i p

( )

9 i = 2 exp - i x (7.39) zl u k ( 2 nx )

uk k =1 TAF l =1 where:

fkl = joint relative frequency of occurrence of winds in windspeed class k, stability class l, blowing toward this exposure point, expressed as a fraction.

Qi = average annual release rate of radionuclide i, µCi/s.

p = fraction of radionuclide remaining in plume (Figure 7.4).

TAF = site specific terrain adjustment factor (see Table 7.3). Calculated as described in Section 7.9.4.

zl = vertical dispersion coefficient for stability class l which includes a building wake adjustment, c

= 2zl + ,

or = 3 zl , whichever is smaller.

where:

zl is the vertical dispersion coefficient for stability class l (m) (Figure 7.5),

c is a building shape factor (c=0.5) (Reference 5),

a is the minimum building cross-sectional area (1630 m2) (Reference 23).

uk = midpoint value of wind speed class interval k, m/s.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 143 of 205 x = downwind distance, m.

n = number of sectors, 16.

i = radioactive decay coefficient of radionuclide i, s-1 2x/n = sector width at point of interest, m.

7.9.2 Adjusted Relative Concentration - /Q Relative concentrations of nuclides at downwind locations are calculated using the following equation:

9 7 2 f kl

= TAF (7.40)

Q k =1 l =1 zl u k ( 2nx )

where:

fkl = joint relative frequency of occurrence of winds in windspeed class k, stability class l, blowing toward this exposure point, expressed as a fraction.

TAF = site specific terrain adjustment factor (see Table 7.3). Calculated as described in Section 7.9.4.

zl = vertical dispersion coefficient for stability class l which includes a building wake adjustment, c

= 2zl + ,

or = 3 zl , whichever is smaller.

where:

szl is the vertical dispersion coefficient for stability class l (m) (Figure 7.5),

c is a building shape factor (c=0.5) (Reference 5),

a is the minimum building cross-sectional area (1630 m2) (Reference 23).

uk = midpoint value of wind speed class interval k, m/s.

x = downwind distance, m.

n = number of sectors, 16.

2x/n = sector width at point of interest, m.

7.9.3 Adjusted Relative Deposition - D/Q Relative deposition of nuclides at downwind locations is calculated using the following equation:

D 9 7 f kl dr

= TAF ( ) (7.41)

Q k =1 l =1 2 x n

where:

fkl = joint relative frequency of occurrence of winds in windspeed class k and stability class l, blowing toward this exposure point, expressed as a fraction.

dr = relative deposition rate, m-1 (from Figure 7.6).

TAF = site specific terrain adjustment factor (see Table 7.3). Calculated as described in Section 7.9.4.

x = downwind distance, m.

n = number of sectors, 16.

2x/n = sector width at point of interest, m.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 144 of 205 7.9.4 Terrain Adjustment Factor - TAF As discussed in Reference 5, the straight-line dispersion model does not account for spatial and temporal variations in the airflow expected from the southwest-northeast aligned river valley. Such variations are considered by application of site-specific terrain adjustment factors, TAF. These factors were developed through the comparison of variable trajectory model results with straight-line model results for onsite meteorological data for 1978 (Reference 19). The ratio of the variable trajectory model dispersion factors to the straight-line model dispersion factors is defined as the TAF.

The dispersion factors used in the dose rate and dose calculations described in Sections 7.2.2, 7.2.3, 7.3.1, 7.3.2, and 7.4.1 are calculated using the meteorological data from the 1986 to 2005 period (in Table 7.2).

/Q and D/Q values are calculated for each of the 16 UNRESTRICTED AREA BOUNDARY sector locations (Table 7.1). These are multiplied by the TAF associated with each of these sectors (see Table 7.3). The highest of these dispersion values are chosen for the dose or dose rate calculations.

The dispersion factors used in the dose calculations described in Section 7.7 are calculated using the actual meteorological data for the period. /Q or D/Q values are calculated using Equations 7.40 and 7.41 for the UNRESTRICTED AREA BOUNDARY locations identified in Table 7.1, for the 16 nearest resident locations, and all garden and milk animal locations identified in the annual land use census described in Section 9.3.

The TAF values associated with these dispersion factors is the ratio of the dispersion factor calculated by the variable trajectory model to that calculated by the straight-line model for each of these locations using the 1978 meteorological data. These values will be calculated for all locations identified by the land use census and then used to modify the /Q and D/Q values determined with the actual meteorological data. Any TAF values of less than 1.0 will be defined as 1.0.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 145 of 205 Table 7.1 - WBN - OFFSITE RECEPTOR LOCATION DATA Receptor Sector DISTANCE /Q

D/Q*

from plant (m) (s/m3) (1/m2)

Unrestricted Area Boundary N 1550 3.01E-06 4.78E-09 Unrestricted Area Boundary NNE 1980 3.53E-06 6.83E-09 Unrestricted Area Boundary NE 1580 5.00E-06 5.24E-09 Unrestricted Area Boundary ENE 1370 7.24E-06 5.16E-09 Unrestricted Area Boundary E 1280 8.56E-06 6.04E-09 Unrestricted Area Boundary ESE 1250 7.94E-06 6.44E-09 Unrestricted Area Boundary SE 1250 7.40E-06 6.33E-09 Unrestricted Area Boundary SSE 1250 4.03E-06 5.47E-09 Unrestricted Area Boundary S 1340 2.81E-06 6.16E-09 Unrestricted Area Boundary SSW 1550 2.07E-06 5.25E-09 Unrestricted Area Boundary SW 1670 2.12E-06 3.50E-09 Unrestricted Area Boundary WSW 1430 3.04E-06 3.54E-09 Unrestricted Area Boundary W 1460 1.76E-06 1.73E-09 Unrestricted Area Boundary WNW 1400 9.96E-08 9.52E-10 Unrestricted Area Boundary NW 1400 1.21E-06 1.25E-09 Unrestricted Area Boundary NNW 1460 1.68E-06 1.93E-09 Liquid Discharge N/A N/A NOTE: For quarterly airborne dose calculations, doses will also be calculated for all locations identified in the most recent land use census, and for any additional points deemed necessary.

These /Q and D/Q values must be multiplied by the sector specific Terrain Adjustment Factor (see Table 7.3) prior to selecting the critical UNRESTRICTED AREA BOUNDARY location to be used in dose calculations.

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STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.001 0.011 0.052 0.079 0.095 0.005 0.000 0.000 0.244 NNE 0.000 0.001 0.021 0.084 0.124 0.181 0.007 0.000 0.000 0.418 NE 0.000 0.000 0.034 0.100 0.080 0.094 0.000 0.000 0.000 0.308 ENE 0.000 0.000 0.039 0.076 0.045 0.017 0.000 0.000 0.000 0.175 E 0.000 0.000 0.037 0.040 0.010 0.004 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.017 0.023 0.002 0.001 0.000 0.000 0.000 0.042 SE 0.000 0.001 0.026 0.027 0.005 0.004 0.000 0.000 0.000 0.064 SSE 0.000 0.000 0.049 0.063 0.015 0.011 0.001 0.000 0.000 0.140 S 0.000 0.002 0.070 0.180 0.142 0.121 0.020 0.001 0.000 0.535 SSW 0.000 0.000 0.063 0.371 0.594 0.700 0.049 0.001 0.000 1.778 SW 0.000 0.000 0.029 0.146 0.148 0.065 0.002 0.000 0.000 0.390 WSW 0.000 0.000 0.007 0.020 0.018 0.040 0.006 0.000 0.000 0.091 W 0.000 0.000 0.006 0.007 0.029 0.059 0.007 0.000 0.000 0.108 WNW 0.000 0.000 0.004 0.010 0.011 0.064 0.005 0.000 0.000 0.093 NW 0.000 0.000 0.004 0.007 0.019 0.052 0.005 0.000 0.000 0.087 NNW 0.000 0.000 0.009 0.021 0.038 0.081 0.012 0.000 0.000 0.161 SUBTOTAL 0.001 0.005 0.426 1.226 1.359 1.589 0.119 0.001 0.000 4.725 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS A 8030 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 7945 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 6.72 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-148 of 207

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STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.027 0.092 0.084 0.109 0.005 0.000 0.000 0.318 NNE 0.000 0.001 0.039 0.155 0.147 0.212 0.009 0.000 0.000 0.563 NE 0.000 0.000 0.081 0.147 0.090 0.077 0.001 0.000 0.000 0.396 ENE 0.000 0.001 0.058 0.096 0.043 0.010 0.000 0.000 0.000 0.208 E 0.000 0.001 0.046 0.052 0.004 0.002 0.000 0.000 0.000 0.106 ESE 0.000 0.002 0.026 0.022 0.000 0.000 0.000 0.000 0.000 0.051 SE 0.000 0.000 0.039 0.032 0.005 0.002 0.001 0.000 0.000 0.078 SSE 0.000 0.000 0.057 0.035 0.008 0.004 0.000 0.000 0.000 0.104 S 0.000 0.001 0.077 0.148 0.075 0.039 0.014 0.001 0.000 0.354 SSW 0.000 0.001 0.082 0.322 0.266 0.199 0.020 0.000 0.000 0.890 SW 0.000 0.000 0.036 0.169 0.054 0.014 0.001 0.000 0.000 0.275 WSW 0.000 0.000 0.007 0.037 0.015 0.021 0.001 0.000 0.000 0.081 W 0.000 0.000 0.006 0.011 0.025 0.040 0.009 0.000 0.000 0.091 WNW 0.000 0.001 0.005 0.014 0.031 0.079 0.007 0.000 0.000 0.137 NW 0.000 0.000 0.007 0.015 0.033 0.071 0.008 0.000 0.000 0.135 NNW 0.000 0.000 0.011 0.034 0.040 0.079 0.008 0.000 0.000 0.173 SUBTOTAL 0.000 0.007 0.606 1.383 0.923 0.958 0.083 0.001 0.000 3.960 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS B 6722 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 6659 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.98 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-149 of 207

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STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.001 0.060 0.141 0.125 0.151 0.007 0.000 0.000 0.485 NNE 0.000 0.001 0.111 0.224 0.209 0.260 0.013 0.000 0.000 0.817 NE 0.000 0.003 0.139 0.221 0.117 0.070 0.001 0.000 0.000 0.552 ENE 0.000 0.001 0.113 0.127 0.030 0.005 0.001 0.000 0.000 0.277 E 0.000 0.005 0.080 0.049 0.005 0.002 0.000 0.000 0.000 0.140 ESE 0.000 0.003 0.054 0.028 0.002 0.001 0.000 0.000 0.000 0.088 SE 0.000 0.002 0.071 0.033 0.002 0.001 0.000 0.000 0.000 0.109 SSE 0.000 0.002 0.080 0.064 0.009 0.004 0.002 0.000 0.000 0.161 S 0.000 0.001 0.128 0.230 0.085 0.048 0.008 0.001 0.000 0.503 SSW 0.000 0.001 0.152 0.423 0.256 0.177 0.019 0.000 0.000 1.028 SW 0.000 0.001 0.080 0.225 0.070 0.011 0.001 0.000 0.000 0.387 WSW 0.000 0.001 0.023 0.049 0.026 0.015 0.001 0.000 0.000 0.117 W 0.000 0.001 0.016 0.027 0.039 0.042 0.004 0.000 0.000 0.130 WNW 0.000 0.000 0.013 0.030 0.049 0.111 0.010 0.000 0.000 0.214 NW 0.000 0.000 0.020 0.036 0.043 0.096 0.011 0.000 0.000 0.206 NNW 0.000 0.000 0.032 0.059 0.064 0.098 0.011 0.000 0.000 0.264 SUBTOTAL 0.000 0.023 1.171 1.968 1.130 1.093 0.089 0.001 0.000 5.476 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS C 9309 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 9207 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.57 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-150 of 207

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STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.006 0.050 0.656 0.996 1.063 1.203 0.034 0.000 0.000 4.007 NNE 0.006 0.052 0.697 1.241 1.206 1.182 0.072 0.002 0.000 4.458 NE 0.007 0.064 0.796 1.060 0.477 0.203 0.005 0.000 0.000 2.612 ENE 0.008 0.095 0.840 0.479 0.115 0.038 0.002 0.000 0.000 1.577 E 0.005 0.126 0.478 0.137 0.022 0.005 0.000 0.000 0.000 0.774 ESE 0.003 0.081 0.275 0.057 0.006 0.004 0.000 0.000 0.000 0.426 SE 0.004 0.090 0.369 0.076 0.022 0.014 0.001 0.001 0.000 0.575 SSE 0.006 0.133 0.566 0.160 0.035 0.034 0.014 0.000 0.000 0.949 S 0.011 0.174 1.104 0.699 0.296 0.251 0.076 0.004 0.000 2.615 SSW 0.015 0.145 1.610 1.796 0.927 0.815 0.076 0.002 0.000 5.386 SW 0.010 0.167 1.060 0.790 0.202 0.097 0.004 0.000 0.000 2.329 WSW 0.006 0.109 0.558 0.289 0.123 0.088 0.004 0.000 0.000 1.177 W 0.005 0.121 0.406 0.293 0.258 0.256 0.008 0.000 0.000 1.347 WNW 0.004 0.095 0.353 0.394 0.491 0.520 0.021 0.000 0.000 1.879 NW 0.004 0.071 0.353 0.403 0.532 0.608 0.046 0.001 0.000 2.017 NNW 0.004 0.042 0.445 0.566 0.631 0.795 0.034 0.000 0.000 2.517 SUBTOTAL 0.104 1.615 10.566 9.436 6.405 6.113 0.395 0.010 0.000 34.645 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS D 58946 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 58253 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 175 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 4.96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-151 of 207

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STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.032 0.156 0.484 0.623 0.300 0.062 0.002 0.000 0.000 1.659 NNE 0.029 0.142 0.431 0.322 0.171 0.047 0.003 0.000 0.000 1.144 NE 0.039 0.169 0.606 0.366 0.068 0.012 0.003 0.000 0.000 1.264 ENE 0.053 0.240 0.813 0.196 0.015 0.004 0.001 0.000 0.000 1.321 E 0.029 0.277 0.310 0.040 0.011 0.003 0.000 0.000 0.000 0.671 ESE 0.014 0.167 0.118 0.024 0.006 0.004 0.001 0.000 0.000 0.333 SE 0.018 0.203 0.149 0.048 0.025 0.017 0.002 0.000 0.000 0.462 SSE 0.032 0.324 0.321 0.083 0.051 0.039 0.007 0.000 0.000 0.856 S 0.077 0.519 1.012 0.415 0.197 0.193 0.041 0.001 0.000 2.454 SSW 0.123 0.604 1.864 1.178 0.645 0.516 0.051 0.000 0.000 4.981 SW 0.101 0.731 1.291 0.307 0.121 0.062 0.002 0.000 0.000 2.616 WSW 0.072 0.736 0.711 0.147 0.087 0.037 0.001 0.000 0.000 1.792 W 0.064 0.698 0.591 0.194 0.083 0.034 0.000 0.000 0.000 1.664 WNW 0.059 0.645 0.537 0.263 0.099 0.037 0.001 0.000 0.000 1.642 NW 0.048 0.461 0.507 0.279 0.108 0.047 0.002 0.001 0.000 1.453 NNW 0.036 0.255 0.457 0.375 0.247 0.092 0.005 0.000 0.000 1.465 SUBTOTAL 0.827 6.326 10.201 4.862 2.234 1.206 0.121 0.002 0.000 25.777 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS E 44130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 43343 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 1390 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 3.03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-152 of 207

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STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.046 0.268 0.181 0.018 0.001 0.001 0.000 0.000 0.000 0.515 NNE 0.038 0.199 0.172 0.016 0.002 0.001 0.000 0.000 0.000 0.429 NE 0.050 0.218 0.266 0.029 0.002 0.000 0.000 0.000 0.000 0.565 ENE 0.064 0.275 0.348 0.032 0.002 0.001 0.000 0.000 0.000 0.721 E 0.033 0.197 0.123 0.005 0.001 0.000 0.000 0.000 0.000 0.358 ESE 0.015 0.121 0.027 0.000 0.000 0.000 0.000 0.000 0.000 0.163 SE 0.016 0.119 0.036 0.004 0.001 0.001 0.000 0.000 0.000 0.176 SSE 0.025 0.177 0.066 0.010 0.001 0.002 0.001 0.000 0.000 0.282 S 0.056 0.313 0.236 0.032 0.004 0.002 0.000 0.000 0.000 0.643 SSW 0.103 0.459 0.547 0.156 0.020 0.004 0.000 0.000 0.000 1.290 SW 0.136 0.698 0.627 0.040 0.006 0.001 0.000 0.000 0.000 1.507 WSW 0.167 0.994 0.639 0.023 0.002 0.001 0.000 0.000 0.000 1.827 W 0.183 1.268 0.522 0.021 0.003 0.001 0.000 0.000 0.000 1.999 WNW 0.177 1.279 0.447 0.029 0.001 0.001 0.000 0.000 0.000 1.933 NW 0.171 1.198 0.472 0.034 0.002 0.001 0.000 0.000 0.000 1.878 NNW 0.080 0.525 0.254 0.036 0.002 0.001 0.000 0.000 0.000 0.897 SUBTOTAL 1.360 8.307 4.963 0.486 0.049 0.016 0.001 0.000 0.000 15.181 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS F 26048 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 25526 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 2286 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.42 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-153 of 207

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STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Watts Bar Nuclear Plant JAN 1, 1986 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.035 0.221 0.066 0.001 0.000 0.000 0.000 0.000 0.000 0.323 NNE 0.034 0.199 0.077 0.001 0.000 0.000 0.000 0.000 0.000 0.310 NE 0.048 0.271 0.123 0.002 0.000 0.000 0.000 0.000 0.000 0.444 ENE 0.059 0.300 0.188 0.004 0.001 0.000 0.000 0.000 0.000 0.551 E 0.032 0.202 0.058 0.002 0.000 0.000 0.000 0.000 0.000 0.294 ESE 0.016 0.116 0.018 0.000 0.000 0.000 0.000 0.000 0.000 0.151 SE 0.021 0.145 0.023 0.000 0.000 0.000 0.000 0.000 0.000 0.189 SSE 0.025 0.173 0.032 0.001 0.000 0.000 0.000 0.000 0.000 0.231 S 0.036 0.246 0.051 0.002 0.000 0.000 0.000 0.000 0.000 0.335 SSW 0.060 0.367 0.123 0.005 0.001 0.000 0.000 0.000 0.000 0.556 SW 0.096 0.569 0.222 0.002 0.000 0.000 0.000 0.000 0.000 0.889 WSW 0.162 0.916 0.410 0.007 0.000 0.000 0.000 0.000 0.000 1.495 W 0.169 1.036 0.351 0.002 0.000 0.000 0.000 0.000 0.000 1.559 WNW 0.130 0.825 0.240 0.004 0.000 0.000 0.000 0.000 0.000 1.200 NW 0.127 0.751 0.292 0.002 0.000 0.000 0.000 0.000 0.000 1.173 NNW 0.058 0.356 0.120 0.002 0.000 0.000 0.000 0.000 0.000 0.536 SUBTOTAL 1.109 6.695 2.394 0.037 0.001 0.000 0.000 0.000 0.000 10.236 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 170639 TOTAL HOURS OF STABILITY CLASS G 17454 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 17211 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 168144 TOTAL HOURS CALM 1864 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.14 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS WBL-23-19 E2-154 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 153 of 205 Table 7.3 - ADJUSTED DISPERSION FACTORS Sector /Q(Terrain Adjusted) D/Q(Terrain Adjusted)

(s/m3) (1/m2)

N 5.12E-06 8.13E-09 NNE 6.35E-06 1.23E-08 NE 1.05E-05 1.10E-08 ENE 1.23E-05 8.77E-09 E 1.37E-05 9.66E-09 ESE 1.43E-05 1.16E-08 SE 1.11E-05 9.49E-09 SSE 6.04E-06 8.21E-09 S 5.33E-06 1.17E-08 SSW 4.14E-06 1.05E-08 SW 4.46E-06 7.34E-09 WSW 5.47E-06 6.37E-09 W 2.11E-06 2.07E-09 WNW 2.49E-06 2.38E-09 NW 2.05E-06 2.13E-09 NNW 2.68E-06 3.08E-09

The Site Specific Terrain Adjustment Factor (TAF) is equal to the ratio of the variable trajectory /Q to the straight-line /Q. See ODCM Section 7.9.4 for a full explanation.

WBL-23-19 E2-155 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 154 of 205 Table 7.4 - DOSE FACTORS FOR SUBMERSION IN NOBLE GASES Submersion dose Air dose mrem/y per µCi/m3 mrad/y per µCi/m3 DFBi DFSi DFgi DFbi Kr-83m 7.56E-02 --- 1.93E+01 2.88E+02 Kr-85m 1.17E+03 1.46E+03 1.23E+03 1.97E+03 Kr-85 1.61E+01 1.34E+03 1.72E+01 1.95E+03 Kr-87 5.92E+03 9.73E+03 6.17E+03 1.03E+04 Kr-88 1.47E+04 2.37E+03 1.52E+04 2.93E+03 Kr-89 1.66E+04 1.01E+04 1.73E+04 1.06E+04 Kr-90 1.56E+04 7.29E+03 1.63E+04 7.83E+03 Xe-131m 9.15E+01 4.76E+02 1.56E+02 1.11E+03 Xe-133m 2.51E+02 9.94E+02 3.27E+02 1.48E+03 Xe-133 2.94E+02 3.06E+02 3.53E+02 1.05E+03 Xe-135m 3.12E+03 7.11E+02 3.36E+03 7.39E+02 Xe-135 1.81E+03 1.86E+03 1.92E+03 2.46E+03 Xe-137 1.42E+03 1.22E+04 1.51E+03 1.27E+04 Xe-138 8.83E+03 4.13E+03 9.21E+03 4.75E+03 Ar-41 8.84E+03 2.69E+03 9.30E+03 3.28E+03

Reference:

Regulatory Guide 1.109, Table B-1 (Reference 4).

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Unrestricted Area Boundary - 1 0.8 1-2 1.5 2-3 2.5 3-4 3.5 4-5 4.5 5 - 10 7.5 10 - 20 15 20 - 30 25 30 - 40 35 40 - 50 45 WBL-23-19 E2-157 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 156 of 205 Table 7.6 - POPULATION WITHIN EACH SECTOR ELEMENT Distance from Site (miles)

Radii/Distances (mi)

Sectors 0-1 1-2 2-3 3-4 4-5 5-10 10-20 20-30 30-40 40-50 N 0 13 0 0 96 2432 1885 2778 4768 6172 NNE 0 0 13 291 131 1252 11762 18766 14502 2547 NE 0 0 20 326 304 875 3783 16734 29838 78334 ENE 0 0 20 326 304 525 3553 29539 63798 253831 E 0 9 456 326 651 3370 11352 18647 30063 44013 ESE 0 0 0 28 43 818 6230 20120 5068 3280 SE 9 0 0 30 41 881 19852 15185 3950 4822 SSE 22 0 0 260 436 1333 8951 12907 2918 48593 S 17 0 0 0 2096 4043 4586 42883 56430 17985 SSW 0 0 22 0 0 577 5725 42517 46281 106392 SW 0 0 0 0 0 1056 12978 14499 62307 111795 WSW 0 6 36 60 126 715 12791 2837 2840 3372 W 0 15 22 102 90 713 3406 5555 2944 5474 WNW 0 0 22 126 80 492 2091 4372 5654 20511 NW 0 109 334 378 529 2669 2889 18634 10462 15956 NNW 0 0 0 174 123 3132 1536 33843 11609 5890 Total 48 152 945 2427 5050 24883 113370 299816 353432 728967 WBL-23-19 E2-158 of 207

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ADULT Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 1.58E-07 1.58E-07 1.58E-07 1.58E-07 1.58E-07 1.58E-07 1.58E-07 C-14 2.27E-06 4.26E-07 4.26E-07 4.26E-07 4.26E-07 4.26E-07 4.26E-07 Na-24 1.28E-06 1.28E-06 1.28E-06 1.28E-06 1.28E-06 1.28E-06 1.28E-06 P-32 1.65E-04 9.64E-06 6.26E-06 0.00E+00 0.00E+00 0.00E+00 1.08E-05 Cr-51 0.00E+00 0.00E+00 1.25E-08 7.44E-09 2.85E-09 1.80E-06 4.15E-07 Mn-54 0.00E+00 4.95E-06 7.87E-07 0.00E+00 1.23E-06 1.75E-04 9.67E-06 Mn-56 0.00E+00 1.55E-10 2.29E-11 0.00E+00 1.63E-10 1.18E-06 2.53E-06 Fe-55 3.07E-06 2.12E-06 4.93E-07 0.00E+00 0.00E+00 9.01E-06 7.54E-07 Fe-59 1.47E-06 3.47E-06 1.32E-06 0.00E+00 0.00E+00 1.27E-04 2.35E-05 Co-57 0.00E+00 8.65E-08 8.39E-08 0.00E+00 0.00E+00 4.62E-05 3.93E-06 Co-58 0.00E+00 1.98E-07 2.59E-07 0.00E+00 0.00E+00 1.16E-04 1.33E-05 Co-60 0.00E+00 1.44E-06 1.85E-06 0.00E+00 0.00E+00 7.46E-04 3.56E-05 Ni-63 5.40E-05 3.93E-06 1.81E-06 0.00E+00 0.00E+00 2.23E-05 1.67E-06 Ni-65 1.92E-10 2.62E-11 1.14E-11 0.00E+00 0.00E+00 7.00E-07 1.54E-06 Cu-64 0.00E+00 1.83E-10 7.69E-11 0.00E+00 5.78E-10 8.48E-07 6.12E-06 Zn-65 4.05E-06 1.29E-05 5.82E-06 0.00E+00 8.62E-06 1.08E-04 6.68E-06 Zn-69 4.23E-12 8.14E-12 5.65E-13 0.00E+00 5.27E-12 1.15E-07 2.04E-09 Zn-69m 1.02E-09 2.45E-09 2.24E-10 0.00E+00 1.48E-09 2.38E-06 1.71E-05 Br-82 0.00E+00 0.00E+00 1.69E-06 0.00E+00 0.00E+00 0.00E+00 1.30E-06 Br-83 0.00E+00 0.00E+00 3.01E-08 0.00E+00 0.00E+00 0.00E+00 2.90E-08 Br-84 0.00E+00 0.00E+00 3.91E-08 0.00E+00 0.00E+00 0.00E+00 2.05E-13 Br-85 0.00E+00 0.00E+00 1.60E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 1.69E-05 7.37E-06 0.00E+00 0.00E+00 0.00E+00 2.08E-06 Rb-88 0.00E+00 4.84E-08 2.41E-08 0.00E+00 0.00E+00 0.00E+00 4.18E-19 Rb-89 0.00E+00 3.20E-08 2.12E-08 0.00E+00 0.00E+00 0.00E+00 1.16E-21 Sr-89 3.80E-05 0.00E+00 1.09E-06 0.00E+00 0.00E+00 1.75E-04 4.37E-05 Sr-90 1.24E-02 0.00E+00 7.62E-04 0.00E+00 0.00E+00 1.20E-03 9.02E-05 Sr-91 7.74E-09 0.00E+00 3.13E-10 0.00E+00 0.00E+00 4.56E-06 2.39E-05 Sr-92 8.43E-10 0.00E+00 3.64E-11 0.00E+00 0.00E+00 2.06E-06 5.38E-06 Y-90 2.61E-07 0.00E+00 7.01E-09 0.00E+00 0.00E+00 2.12E-05 6.32E-05 Y-91m 3.26E-11 0.00E+00 1.27E-12 0.00E+00 0.00E+00 2.40E-07 1.66E-10 Y-91 5.78E-05 0.00E+00 1.55E-06 0.00E+00 0.00E+00 2.13E-04 4.81E-05 Y-92 1.29E-09 0.00E+00 3.77E-11 0.00E+00 0.00E+00 1.96E-06 9.19E-06 Y-93 1.18E-08 0.00E+00 3.26E-10 0.00E+00 0.00E+00 6.06E-06 5.27E-05 Zr-95 1.34E-05 4.30E-06 2.91E-06 0.00E+00 6.77E-06 2.21E-04 1.88E-05 Zr-97 1.21E-08 2.45E-09 1.13E-09 0.00E+00 3.71E-09 9.84E-06 6.54E-05 Nb-95 1.76E-06 9.77E-07 5.26E-07 0.00E+00 9.67E-07 6.31E-05 1.30E-05 Nb-97 2.78E-11 7.03E-12 2.56E-12 0.00E+00 8.18E-12 3.00E-07 3.02E-08 Mo-99 0.00E+00 1.51E-08 2.87E-09 0.00E+00 3.64E-08 1.14E-05 3.10E-05 Tc-99m 1.29E-13 3.64E-13 4.63E-12 0.00E+00 5.52E-12 9.55E-08 5.20E-07 Tc-101 5.22E-15 7.52E-15 7.38E-14 0.00E+00 1.35E-13 4.99E-08 1.36E-21 Ru-103 1.91E-07 0.00E+00 8.23E-08 0.00E+00 7.29E-07 6.31E-05 1.38E-05 Ru-105 9.88E-11 0.00E+00 3.89E-11 0.00E+00 1.27E-10 1.37E-06 6.02E-06 Ru-106 8.64E-06 0.00E+00 1.09E-06 0.00E+00 1.67E-05 1.17E-03 1.14E-04 WBL-23-19 E2-159 of 207

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ADULT Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 1.35E-06 1.25E-06 7.43E-07 0.00E+00 2.46E-06 5.79E-04 3.78E-05 Sb-124 3.90E-06 7.36E-08 1.55E-06 9.44E-09 0.00E+00 3.10E-04 5.08E-05 Sb-125 6.67E-06 7.44E-08 1.58E-06 6.75E-09 0.00E+00 2.18E-04 1.26E-05 Sn-125 1.16E-06 3.12E-08 7.03E-08 2.59E-08 0.00E+00 7.37E-05 6.81E-05 Te-125m 4.27E-07 1.98E-07 5.84E-08 1.31E-07 1.55E-06 3.92E-05 8.83E-06 Te-127m 1.58E-06 7.21E-07 1.96E-07 4.11E-07 5.72E-06 1.20E-04 1.87E-05 Te-127 1.75E-10 8.03E-11 3.87E-11 1.32E-10 6.37E-10 8.14E-07 7.17E-06 Te-129m 1.22E-06 5.84E-07 1.98E-07 4.30E-07 4.57E-06 1.45E-04 4.79E-05 Te-129 6.22E-12 2.99E-12 1.55E-12 4.87E-12 2.34E-11 2.42E-07 1.96E-08 Te-131m 8.74E-09 5.45E-09 3.63E-09 6.88E-09 3.86E-08 1.82E-05 6.95E-05 Te-131 1.39E-12 7.44E-13 4.49E-13 1.17E-12 5.46E-12 1.74E-07 2.30E-09 Te-132 3.25E-08 2.69E-08 2.02E-08 2.37E-08 1.82E-07 3.60E-05 6.37E-05 I-130 5.72E-07 1.68E-06 6.60E-07 1.42E-04 2.61E-06 0.00E+00 9.61E-07 I-131 3.15E-06 4.47E-06 2.56E-06 1.49E-03 7.66E-06 0.00E+00 7.85E-07 I-132 1.45E-07 4.07E-07 1.45E-07 1.43E-05 6.48E-07 0.00E+00 5.08E-08 I-133 1.08E-06 1.85E-06 5.65E-07 2.69E-04 3.23E-06 0.00E+00 1.11E-06 I-134 8.05E-08 2.16E-07 7.69E-08 3.73E-06 3.44E-07 0.00E+00 1.26E-10 I-135 3.35E-07 8.73E-07 3.21E-07 5.60E-05 1.39E-06 0.00E+00 6.56E-07 Cs-134 4.66E-05 1.06E-04 9.10E-05 0.00E+00 3.59E-05 1.22E-05 1.30E-06 Cs-136 4.88E-06 1.83E-05 1.38E-05 0.00E+00 1.07E-05 1.50E-06 1.46E-06 Cs-137 5.98E-05 7.76E-05 5.35E-05 0.00E+00 2.78E-05 9.40E-06 1.05E-06 Cs-138 4.14E-08 7.76E-08 4.05E-08 0.00E+00 6.00E-08 6.07E-09 2.33E-13 Ba-139 1.17E-10 8.32E-14 3.42E-12 0.00E+00 7.78E-14 4.70E-07 1.12E-07 Ba-140 4.88E-06 6.13E-09 3.21E-07 0.00E+00 2.09E-09 1.59E-04 2.73E-05 Ba-141 1.25E-11 9.41E-15 4.20E-13 0.00E+00 8.75E-15 2.42E-07 1.45E-17 Ba-142 3.29E-12 3.38E-15 2.07E-13 0.00E+00 2.86E-15 1.49E-07 1.96E-26 La-140 4.30E-08 2.17E-08 5.73E-09 0.00E+00 0.00E+00 1.70E-05 5.73E-05 La-142 8.54E-11 3.88E-11 9.65E-12 0.00E+00 0.00E+00 7.91E-07 2.64E-07 Ce-141 2.49E-06 1.69E-06 1.91E-07 0.00E+00 7.83E-07 4.52E-05 1.50E-05 Ce-143 2.33E-08 1.72E-08 1.91E-09 0.00E+00 7.60E-09 9.97E-06 2.83E-05 Ce-144 4.29E-04 1.79E-04 2.30E-05 0.00E+00 1.06E-04 9.72E-04 1.02E-04 Pr-143 1.17E-06 4.69E-07 5.80E-08 0.00E+00 2.70E-07 3.51E-05 2.50E-05 Pr-144 3.76E-12 1.56E-12 1.91E-13 0.00E+00 8.81E-13 1.27E-07 2.69E-18 Nd-147 6.59E-07 7.62E-07 4.56E-08 0.00E+00 4.45E-07 2.76E-05 2.16E-05 W-187 1.06E-09 8.85E-10 3.10E-10 0.00E+00 0.00E+00 3.63E-06 1.94E-05 Np-239 2.87E-08 2.82E-09 1.55E-09 0.00E+00 8.75E-09 4.70E-06 1.49E-05

Reference:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125, Sn-125 are from Reference 17, Table 8.

All others from: Regulatory Guide 1.109, Table E-7.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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TEEN Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 1.59E-07 1.59E-07 1.59E-07 1.59E-07 1.59E-07 1.59E-07 1.59E-07 C-14 3.25E-06 6.09E-07 6.09E-07 6.09E-07 6.09E-07 6.09E-07 6.09E-07 Na-24 1.72E-06 1.72E-06 1.72E-06 1.72E-06 1.72E-06 1.72E-06 1.72E-06 P-32 2.36E-04 1.37E-05 8.95E-06 0.00E+00 0.00E+00 0.00E+00 1.16E-05 Cr-51 0.00E+00 0.00E+00 1.69E-08 9.37E-09 3.84E-09 2.62E-06 3.75E-07 Mn-54 0.00E+00 6.39E-06 1.05E-06 0.00E+00 1.59E-06 2.48E-04 8.35E-06 Mn-56 0.00E+00 2.12E-10 3.15E-11 0.00E+00 2.24E-10 1.90E-06 7.18E-06 Fe-55 4.18E-06 2.98E-06 6.93E-07 0.00E+00 0.00E+00 1.55E-05 7.99E-07 Fe-59 1.99E-06 4.62E-06 1.79E-06 0.00E+00 0.00E+00 1.91E-04 2.23E-05 Co-57 0.00E+00 1.18E-07 1.15E-07 0.00E+00 0.00E+00 7.33E-05 3.93E-06 Co-58 0.00E+00 2.59E-07 3.47E-07 0.00E+00 0.00E+00 1.68E-04 1.19E-05 Co-60 0.00E+00 1.89E-06 2.48E-06 0.00E+00 0.00E+00 1.09E-03 3.24E-05 Ni-63 7.25E-05 5.43E-06 2.47E-06 0.00E+00 0.00E+00 3.84E-05 1.77E-06 Ni-65 2.73E-10 3.66E-11 1.59E-11 0.00E+00 0.00E+00 1.17E-06 4.59E-06 Cu-64 0.00E+00 2.54E-10 1.06E-10 0.00E+00 8.01E-10 1.39E-06 7.68E-06 Zn-65 4.82E-06 1.67E-05 7.80E-06 0.00E+00 1.08E-05 1.55E-04 5.83E-06 Zn-69 6.04E-12 1.15E-11 8.07E-13 0.00E+00 7.53E-12 1.98E-07 3.56E-08 Zn-69m 1.44E-09 3.39E-09 3.11E-10 0.00E+00 2.06E-09 3.92E-06 2.14E-05 Br-82 0.00E+00 0.00E+00 2.28E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-83 0.00E+00 0.00E+00 4.30E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-84 0.00E+00 0.00E+00 5.41E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-85 0.00E+00 0.00E+00 2.29E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 2.38E-05 1.05E-05 0.00E+00 0.00E+00 0.00E+00 2.21E-06 Rb-88 0.00E+00 6.82E-08 3.40E-08 0.00E+00 0.00E+00 0.00E+00 3.65E-15 Rb-89 0.00E+00 4.40E-08 2.91E-08 0.00E+00 0.00E+00 0.00E+00 4.22E-17 Sr-89 5.43E-05 0.00E+00 1.56E-06 0.00E+00 0.00E+00 3.02E-04 4.64E-05 Sr-90 1.35E-02 0.00E+00 8.35E-04 0.00E+00 0.00E+00 2.06E-03 9.56E-05 Sr-91 1.10E-08 0.00E+00 4.39E-10 0.00E+00 0.00E+00 7.59E-06 3.24E-05 Sr-92 1.19E-09 0.00E+00 5.08E-11 0.00E+00 0.00E+00 3.43E-06 1.49E-05 Y-90 3.73E-07 0.00E+00 1.00E-08 0.00E+00 0.00E+00 3.66E-05 6.99E-05 Y-91m 4.63E-11 0.00E+00 1.77E-12 0.00E+00 0.00E+00 4.00E-07 3.77E-09 Y-91 8.26E-05 0.00E+00 2.21E-06 0.00E+00 0.00E+00 3.67E-04 5.11E-05 Y-92 1.84E-09 0.00E+00 5.36E-11 0.00E+00 0.00E+00 3.35E-06 2.06E-05 Y-93 1.69E-08 0.00E+00 4.65E-10 0.00E+00 0.00E+00 1.04E-05 7.24E-05 Zr-95 1.82E-05 5.73E-06 3.94E-06 0.00E+00 8.42E-06 3.36E-04 1.86E-05 Zr-97 1.72E-08 3.40E-09 1.57E-09 0.00E+00 5.15E-09 1.62E-05 7.88E-05 Nb-95 2.32E-06 1.29E-06 7.08E-07 0.00E+00 1.25E-06 9.39E-05 1.21E-05 Nb-97 3.92E-11 9.72E-12 3.55E-12 0.00E+00 1.14E-11 4.91E-07 2.71E-07 Mo-99 0.00E+00 2.11E-08 4.03E-09 0.00E+00 5.14E-08 1.92E-05 3.36E-05 Tc-99m 1.73E-13 4.83E-13 6.24E-12 0.00E+00 7.20E-12 1.44E-07 7.66E-07 Tc-101 7.40E-15 1.05E-14 1.03E-13 0.00E+00 1.90E-13 8.34E-08 1.09E-16 Ru-103 2.63E-07 0.00E+00 1.12E-07 0.00E+00 9.29E-07 9.79E-05 1.36E-05 Ru-105 1.40E-10 0.00E+00 5.42E-11 0.00E+00 1.76E-10 2.27E-06 1.13E-05 Ru-106 1.23E-05 0.00E+00 1.55E-06 0.00E+00 2.38E-05 2.01E-03 1.20E-04 WBL-23-19 E2-161 of 207

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TEEN Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 1.73E-06 1.64E-06 9.99E-07 0.00E+00 3.13E-06 8.44E-04 3.41E-05 Sb-124 5.38E-06 9.92E-08 2.10E-06 1.22E-08 0.00E+00 4.81E-04 4.98E-05 Sb-125 9.23E-06 1.01E-07 2.15E-06 8.80E-09 0.00E+00 3.42E-04 1.24E-05 Sn-125 1.66E-06 4.42E-08 9.99E-08 3.45E-08 0.00E+00 1.26E-04 7.29E-05 Te-125m 6.10E-07 2.80E-07 8.34E-08 1.75E-07 0.00E+00 6.70E-05 9.38E-06 Te-127m 2.25E-06 1.02E-06 2.73E-07 5.48E-07 8.17E-06 2.07E-04 1.99E-05 Te-127 2.51E-10 1.14E-10 5.52E-11 1.77E-10 9.10E-10 1.40E-06 1.01E-05 Te-129m 1.74E-06 8.23E-07 2.81E-07 5.72E-07 6.49E-06 2.47E-04 5.06E-05 Te-129 8.87E-12 4.22E-12 2.20E-12 6.48E-12 3.32E-11 4.12E-07 2.02E-07 Te-131m 1.23E-08 7.51E-09 5.03E-09 9.06E-09 5.49E-08 2.97E-05 7.76E-05 Te-131 1.97E-12 1.04E-12 6.30E-13 1.55E-12 7.72E-12 2.92E-07 1.89E-09 Te-132 4.50E-08 3.63E-08 2.74E-08 3.07E-08 2.44E-07 5.61E-05 5.79E-05 I-130 7.80E-07 2.24E-06 8.96E-07 1.86E-04 3.44E-06 0.00E+00 1.14E-06 I-131 4.43E-06 6.14E-06 3.30E-06 1.83E-03 1.05E-05 0.00E+00 8.11E-07 I-132 1.99E-07 5.47E-07 1.97E-07 1.89E-05 8.65E-07 0.00E+00 1.59E-07 I-133 1.52E-06 2.56E-06 7.78E-07 3.65E-04 4.49E-06 0.00E+00 1.29E-06 I-134 1.11E-07 2.90E-07 1.05E-07 4.94E-06 4.58E-07 0.00E+00 2.55E-09 I-135 4.62E-07 1.18E-06 4.36E-07 7.76E-05 1.86E-06 0.00E+00 8.69E-07 Cs-134 6.28E-05 1.41E-04 6.86E-05 0.00E+00 4.69E-05 1.83E-05 1.22E-06 Cs-136 6.44E-06 2.42E-05 1.71E-05 0.00E+00 1.38E-05 2.22E-06 1.36E-06 Cs-137 8.38E-05 1.06E-04 3.89E-05 0.00E+00 3.80E-05 1.51E-05 1.06E-06 Cs-138 5.82E-08 1.07E-07 5.58E-08 0.00E+00 8.28E-08 9.84E-09 3.38E-11 Ba-139 1.67E-10 1.18E-13 4.87E-12 0.00E+00 1.11E-13 8.08E-07 8.06E-07 Ba-140 6.84E-06 8.38E-09 4.40E-07 0.00E+00 2.85E-09 2.54E-04 2.86E-05 Ba-141 1.78E-11 1.32E-14 5.93E-13 0.00E+00 1.23E-14 4.11E-07 9.33E-14 Ba-142 4.62E-12 4.63E-15 2.84E-13 0.00E+00 3.92E-15 2.39E-07 5.99E-20 La-140 5.99E-08 2.95E-08 7.82E-09 0.00E+00 0.00E+00 2.68E-05 6.09E-05 La-142 1.20E-10 5.31E-11 1.32E-11 0.00E+00 0.00E+00 1.27E-06 1.50E-06 Ce-141 3.55E-06 2.37E-06 2.71E-07 0.00E+00 1.11E-06 7.67E-05 1.58E-05 Ce-143 3.32E-08 2.42E-08 2.70E-09 0.00E+00 1.08E-08 1.63E-05 3.19E-05 Ce-144 6.11E-04 2.53E-04 3.28E-05 0.00E+00 1.51E-04 1.67E-03 1.08E-04 Pr-143 1.67E-06 6.64E-07 8.28E-08 0.00E+00 3.86E-07 6.04E-05 2.67E-05 Pr-144 5.37E-12 2.20E-12 2.72E-13 0.00E+00 1.26E-12 2.19E-07 2.94E-14 Nd-147 9.83E-07 1.07E-06 6.41E-08 0.00E+00 6.28E-07 4.65E-05 2.28E-05 W-187 1.50E-09 1.22E-09 4.29E-10 0.00E+00 0.00E+00 5.92E-06 2.21E-05 Np-239 4.23E-08 3.99E-09 2.21E-09 0.00E+00 1.25E-08 8.11E-06 1.65E-05

References:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125, Sn-125 are from Reference 17, Table 7.

All others from: Regulatory Guide 1.109, Table E-8.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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CHILD Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 3.04E-07 3.04E-07 3.04E-07 3.04E-07 3.04E-07 3.04E-07 3.04E-07 C-14 9.70E-06 1.82E-06 1.82E-06 1.82E-06 1.82E-06 1.82E-06 1.82E-06 Na-24 4.35E-06 4.35E-06 4.35E-06 4.35E-06 4.35E-06 4.35E-06 4.35E-06 P-32 7.04E-04 3.09E-05 2.67E-05 0.00E+00 0.00E+00 0.00E+00 1.14E-05 Cr-51 0.00E+00 0.00E+00 4.17E-08 2.31E-08 6.57E-09 4.59E-06 2.93E-07 Mn-54 0.00E+00 1.16E-05 2.57E-06 0.00E+00 2.71E-06 4.26E-04 6.19E-06 Mn-56 0.00E+00 4.48E-10 8.43E-11 0.00E+00 4.52E-10 3.55E-06 3.33E-05 Fe-55 1.28E-05 6.80E-06 2.10E-06 0.00E+00 0.00E+00 3.00E-05 7.75E-07 Fe-59 5.59E-06 9.04E-06 4.51E-06 0.00E+00 0.00E+00 3.43E-04 1.91E-05 Co-57 0.00E+00 2.44E-07 2.88E-07 0.00E+00 0.00E+00 1.37E-04 3.58E-06 Co-58 0.00E+00 4.79E-07 8.55E-07 0.00E+00 0.00E+00 2.99E-04 9.29E-06 Co-60 0.00E+00 3.55E-06 6.12E-06 0.00E+00 0.00E+00 1.91E-03 2.60E-05 Ni-63 2.22E-04 1.25E-05 7.56E-06 0.00E+00 0.00E+00 7.43E-05 1.71E-06 Ni-65 8.08E-10 7.99E-11 4.44E-11 0.00E+00 0.00E+00 2.21E-06 2.27E-05 Cu-64 0.00E+00 5.39E-10 2.90E-10 0.00E+00 1.63E-09 2.59E-06 9.92E-06 Zn-65 1.15E-05 3.06E-05 1.90E-05 0.00E+00 1.93E-05 2.69E-04 4.41E-06 Zn-69 1.81E-11 2.61E-11 2.41E-12 0.00E+00 1.58E-11 3.84E-07 2.75E-06 Zn-69m 4.26E-09 7.28E-09 8.59E-10 0.00E+00 4.22E-09 7.36E-06 2.71E-05 Br-82 0.00E+00 0.00E+00 5.66E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-83 0.00E+00 0.00E+00 1.28E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-84 0.00E+00 0.00E+00 1.48E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-85 0.00E+00 0.00E+00 6.84E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 5.36E-05 3.09E-05 0.00E+00 0.00E+00 0.00E+00 2.16E-06 Rb-88 0.00E+00 1.52E-07 9.90E-08 0.00E+00 0.00E+00 0.00E+00 4.66E-09 Rb-89 0.00E+00 9.33E-08 7.83E-08 0.00E+00 0.00E+00 0.00E+00 5.11E-10 Sr-89 1.62E-04 0.00E+00 4.66E-06 0.00E+00 0.00E+00 5.83E-04 4.52E-05 Sr-90 2.73E-02 0.00E+00 1.74E-03 0.00E+00 0.00E+00 3.99E-03 9.28E-05 Sr-91 3.28E-08 0.00E+00 1.24E-09 0.00E+00 0.00E+00 1.44E-05 4.70E-05 Sr-92 3.54E-09 0.00E+00 1.42E-10 0.00E+00 0.00E+00 6.49E-06 6.55E-05 Y-90 1.11E-06 0.00E+00 2.99E-08 0.00E+00 0.00E+00 7.07E-05 7.24E-05 Y-91m 1.37E-10 0.00E+00 4.98E-12 0.00E+00 0.00E+00 7.60E-07 4.64E-07 Y-91 2.47E-04 0.00E+00 6.59E-06 0.00E+00 0.00E+00 7.10E-04 4.97E-05 Y-92 5.50E-09 0.00E+00 1.57E-10 0.00E+00 0.00E+00 6.46E-06 6.46E-05 Y-93 5.04E-08 0.00E+00 1.38E-09 0.00E+00 0.00E+00 2.01E-05 1.05E-04 Zr-95 5.13E-05 1.13E-05 1.00E-05 0.00E+00 1.61E-05 6.03E-04 1.65E-05 Zr-97 5.07E-08 7.34E-09 4.32E-09 0.00E+00 1.05E-08 3.06E-05 9.49E-05 Nb-95 6.35E-06 2.48E-06 1.77E-06 0.00E+00 2.33E-06 1.66E-04 1.00E-05 Nb-97 1.16E-10 2.08E-11 9.74E-12 0.00E+00 2.31E-11 9.23E-07 7.52E-06 Mo-99 0.00E+00 4.66E-08 1.15E-08 0.00E+00 1.06E-07 3.66E-05 3.42E-05 Tc-99m 4.81E-13 9.41E-13 1.56E-11 0.00E+00 1.37E-11 2.57E-07 1.30E-06 Tc-101 2.19E-14 2.30E-14 2.91E-13 0.00E+00 3.92E-13 1.58E-07 4.41E-09 Ru-103 7.55E-07 0.00E+00 2.90E-07 0.00E+00 1.90E-06 1.79E-04 1.21E-05 Ru-105 4.13E-10 0.00E+00 1.50E-10 0.00E+00 3.63E-10 4.30E-06 2.69E-05 Ru-106 3.68E-05 0.00E+00 4.57E-06 0.00E+00 4.97E-05 3.87E-03 1.16E-04 WBL-23-19 E2-163 of 207

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CHILD Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 4.56E-06 3.08E-06 2.47E-06 0.00E+00 5.74E-06 1.48E-03 2.71E-05 Sb-124 1.55E-05 2.00E-07 5.41E-06 3.41E-08 0.00E+00 8.76E-04 4.43E-05 Sb-125 2.66E-05 2.05E-07 5.59E-06 2.46E-08 0.00E+00 6.27E-04 1.09E-05 Sn-125 4.95E-06 9.94E-08 2.95E-07 1.03E-07 0.00E+00 2.43E-04 7.17E-05 Te-125m 1.82E-06 6.29E-07 2.47E-07 5.20E-07 0.00E+00 1.29E-04 9.13E-06 Te-127m 6.72E-06 2.31E-06 8.16E-07 1.64E-06 1.72E-05 4.00E-04 1.93E-05 Te-127 7.49E-10 2.57E-10 1.65E-10 5.30E-10 1.91E-09 2.71E-06 1.52E-05 Te-129m 5.19E-06 1.85E-06 8.22E-07 1.71E-06 1.36E-05 4.76E-04 4.91E-05 Te-129 2.64E-11 9.45E-12 6.44E-12 1.93E-11 6.94E-11 7.93E-07 6.89E-06 Te-131m 3.63E-08 1.60E-08 1.37E-08 2.64E-08 1.08E-07 5.56E-05 8.32E-05 Te-131 5.87E-12 2.28E-12 1.78E-12 4.59E-12 1.59E-11 5.55E-07 3.60E-07 Te-132 1.30E-07 7.36E-08 7.12E-08 8.58E-08 4.79E-07 1.02E-04 3.72E-05 I-130 2.21E-06 4.43E-06 2.28E-06 4.99E-04 6.61E-06 0.00E+00 1.38E-06 I-131 1.30E-05 1.30E-05 7.37E-06 4.39E-03 2.13E-05 0.00E+00 7.68E-07 I-132 5.72E-07 1.10E-06 5.07E-07 5.23E-05 1.69E-06 0.00E+00 8.65E-07 I-133 4.48E-06 5.49E-06 2.08E-06 1.04E-03 9.13E-06 0.00E+00 1.48E-06 I-134 3.17E-07 5.84E-07 2.69E-07 1.37E-05 8.92E-07 0.00E+00 2.58E-07 I-135 1.33E-06 2.36E-06 1.12E-06 2.14E-04 3.62E-06 0.00E+00 1.20E-06 Cs-134 1.76E-04 2.74E-04 6.07E-05 0.00E+00 8.93E-05 3.27E-05 1.04E-06 Cs-136 1.76E-05 4.62E-05 3.14E-05 0.00E+00 2.58E-05 3.93E-06 1.13E-06 Cs-137 2.45E-04 2.23E-04 3.47E-05 0.00E+00 7.63E-05 2.81E-05 9.78E-07 Cs-138 1.71E-07 2.27E-07 1.50E-07 0.00E+00 1.68E-07 1.84E-08 7.29E-08 Ba-139 4.98E-10 2.66E-13 1.45E-11 0.00E+00 2.33E-13 1.56E-06 1.56E-05 Ba-140 2.00E-05 1.75E-08 1.17E-06 0.00E+00 5.71E-09 4.71E-04 2.75E-05 Ba-141 5.29E-11 2.95E-14 1.72E-12 0.00E+00 2.56E-14 7.89E-07 7.44E-08 Ba-142 1.35E-11 9.73E-15 7.54E-13 0.00E+00 7.87E-15 4.44E-07 7.41E-10 La-140 1.74E-07 6.08E-08 2.04E-08 0.00E+00 0.00E+00 4.94E-05 6.10E-05 La-142 3.50E-10 1.11E-10 3.49E-11 0.00E+00 0.00E+00 2.35E-06 2.05E-05 Ce-141 1.06E-05 5.28E-06 7.83E-07 0.00E+00 2.31E-06 1.47E-04 1.53E-05 Ce-143 9.89E-08 5.37E-08 7.77E-09 0.00E+00 2.26E-08 3.12E-05 3.44E-05 Ce-144 1.83E-03 5.72E-04 9.77E-05 0.00E+00 3.17E-04 3.23E-03 1.05E-04 Pr-143 4.99E-06 1.50E-06 2.47E-07 0.00E+00 8.11E-07 1.17E-04 2.63E-05 Pr-144 1.61E-11 4.99E-12 8.10E-13 0.00E+00 2.64E-12 4.23E-07 5.32E-08 Nd-147 2.92E-06 2.36E-06 1.84E-07 0.00E+00 1.30E-06 8.87E-05 2.22E-05 W-187 4.41E-09 2.61E-09 1.17E-09 0.00E+00 0.00E+00 1.11E-05 2.46E-05 Np-239 1.26E-07 9.04E-09 6.35E-09 0.00E+00 2.63E-08 1.57E-05 1.73E-05

Reference:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125, Sn-125 are from Reference 17, Table 6.

All others from: Regulatory Guide 1.109, Table E-9.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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(Page 7 of 8)

INFANT Nuclide bone liver total body thyroid kidney lung GI-LLI H-3 4.62E-07 4.62E-07 4.62E-07 4.62E-07 4.62E-07 4.62E-07 4.62E-07 C-14 1.89E-05 3.79E-06 3.79E-06 3.79E-06 3.79E-06 3.79E-06 3.79E-06 Na-24 7.54E-06 7.54E-06 7.54E-06 7.54E-06 7.54E-06 7.54E-06 7.54E-06 P-32 1.45E-03 8.03E+05 5.53E-05 0.00E+00 0.00E+00 0.00E+00 1.15E-05 Cr-51 0.00E+00 0.00E+00 6.39E-08 4.11E-08 9.45E-09 9.17E-06 2.55E-07 Mn-54 0.00E+00 1.81E-05 3.56E-06 0.00E+00 3.56E-06 7.14E-04 5.04E-06 Mn-56 0.00E+00 1.10E-09 1.58E-10 0.00E+00 7.86E-10 8.95E-06 5.12E-05 Fe-55 1.41E-05 8.39E-06 2.38E-06 0.00E+00 0.00E+00 6.21E-05 7.82E-07 Fe-59 9.69E-06 1.68E-05 6.77E-06 0.00E+00 0.00E+00 7.25E-04 1.77E-05 Co-57 0.00E+00 4.65E-07 4.58E-07 0.00E+00 0.00E+00 2.71E-04 3.47E-06 Co-58 0.00E+00 8.71E-07 1.30E-06 0.00E+00 0.00E+00 5.55E-04 7.95E-06 Co-60 0.00E+00 5.73E-06 8.41E-06 0.00E+00 0.00E+00 3.22E-03 2.28E-05 Ni-63 2.42E-04 1.46E-05 8.29E-06 0.00E+00 0.00E+00 1.49E-04 1.73E-06 Ni-65 1.71E-09 2.03E-10 8.79E-11 0.00E+00 0.00E+00 5.80E-06 3.58E-05 Cu-64 0.00E+00 1.34E-09 5.53E-10 0.00E+00 2.84E-09 6.64E-06 1.07E-05 Zn-65 1.38E-05 4.47E-05 2.22E-05 0.00E+00 2.32E-05 4.62E-04 3.67E-05 Zn-69 3.85E-11 6.91E-11 5.13E-12 0.00E+00 2.87E-11 1.05E-06 9.44E-06 Zn-69m 8.98E-09 1.84E-08 1.67E-09 0.00E+00 7.45E-09 1.91E-05 2.92E-05 Br-82 0.00E+00 0.00E+00 9.49E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-83 0.00E+00 0.00E+00 2.72E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-84 0.00E+00 0.00E+00 2.86E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-85 0.00E+00 0.00E+00 1.46E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Rb-86 0.00E+00 1.36E-04 6.30E-05 0.00E+00 0.00E+00 0.00E+00 2.17E-06 Rb-88 0.00E+00 3.98E-07 2.05E-07 0.00E+00 0.00E+00 0.00E+00 2.42E-07 Rb-89 0.00E+00 2.29E-07 1.47E-07 0.00E+00 0.00E+00 0.00E+00 4.87E-08 Sr-89 2.84E-04 0.00E+00 8.15E-06 0.00E+00 0.00E+00 1.45E-03 4.57E-05 Sr-90 2.92E-02 0.00E+00 1.85E-03 0.00E+00 0.00E+00 8.03E-03 9.36E-05 Sr-91 6.83E-08 0.00E+00 2.47E-09 0.00E+00 0.00E+00 3.76E-05 5.24E-05 Sr-92 7.50E-09 0.00E+00 2.79E-10 0.00E+00 0.00E+00 1.70E-05 1.00E-04 Y-90 2.35E-06 0.00E+00 6.30E-08 0.00E+00 0.00E+00 1.92E-04 7.43E-05 Y-91m 2.91E-10 0.00E+00 9.90E-12 0.00E+00 0.00E+00 1.99E-06 1.68E-06 Y-91 4.20E-04 0.00E+00 1.12E-05 0.00E+00 0.00E+00 1.75E-03 5.02E-05 Y-92 1.17E-08 0.00E+00 3.29E-10 0.00E+00 0.00E+00 1.75E-05 9.04E-05 Y-93 1.07E-07 0.00E+00 2.91E-09 0.00E+00 0.00E+00 5.46E-05 1.19E-04 Zr-95 8.24E-05 1.99E-05 1.45E-05 0.00E+00 2.22E-05 1.25E-03 1.55E-05 Zr-97 1.07E-07 1.83E-08 8.36E-09 0.00E+00 1.85E-08 7.88E-05 1.00E-04 Nb-95 1.12E-05 4.59E-06 2.70E-06 0.00E+00 3.37E-06 3.42E-04 9.05E-06 Nb-97 2.44E-10 5.21E-11 1.88E-11 0.00E+00 4.07E-11 2.37E-06 1.92E-05 Mo-99 0.00E+00 1.18E-07 2.31E-08 0.00E+00 1.89E-07 9.63E-05 3.48E-05 Tc-99m 9.98E-13 2.06E-12 2.66E-11 0.00E+00 2.22E-11 5.79E-07 1.45E-06 Tc-101 4.65E-14 5.88E-14 5.80E-13 0.00E+00 6.99E-13 4.17E-07 6.03E-07 Ru-103 1.44E-06 0.00E+00 4.85E-07 0.00E+00 3.03E-06 3.94E-04 1.15E-05 Ru-105 8.74E-10 0.00E+00 2.93E-10 0.00E+00 6.42E-10 1.12E-05 3.46E-05 Ru-106 6.20E-05 0.00E+00 7.77E-06 0.00E+00 7.61E-05 8.26E-03 1.17E-04 WBL-23-19 E2-165 of 207

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INFANT Nuclide bone liver total body thyroid kidney lung GI-LLI Ag-110m 7.13E-06 5.16E-06 3.57E-06 0.00E+00 7.80E-06 2.62E-03 2.36E-05 Sb-124 2.71E-05 3.97E-07 8.56E-06 7.18E-08 0.00E+00 1.89E-03 4.22E-05 Sb-125 3.69E-05 3.41E-07 7.78E-06 4.45E-08 0.00E+00 1.17E-03 1.05E-05 Sn-125 1.01E-05 2.51E-07 6.00E-07 2.47E-07 0.00E+00 6.43E-04 7.26E-05 Te-125m 3.40E-06 1.42E-06 4.70E-07 1.16E-06 0.00E+00 3.19E-04 9.22E-06 Te-127m 1.19E-05 4.93E-06 1.48E-06 3.48E-06 2.68E-05 9.37E-04 1.95E-05 Te-127 1.59E-09 6.81E-10 3.49E-10 1.32E-09 3.47E-09 7.39E-06 1.74E-05 Te-129m 1.01E-05 4.35E-06 1.59E-06 3.91E-06 2.27E-05 1.20E-03 4.93E-05 Te-129 5.63E-11 2.48E-11 1.34E-11 4.82E-11 1.25E-10 2.14E-06 1.88E-05 Te-131m 7.62E-08 3.93E-08 2.59E-08 6.38E-08 1.89E-07 1.42E-04 8.51E-05 Te-131 1.24E-11 5.87E-12 3.57E-12 1.13E-11 2.85E-11 1.47E-06 5.87E-06 Te-132 2.66E-07 1.69E-07 1.26E-07 1.99E-07 7.39E-07 2.43E-04 3.15E-05 I-130 4.54E-06 9.91E-06 3.98E-06 1.14E-03 1.09E-05 0.00E+00 1.42E-06 I-131 2.71E-05 3.17E-05 1.40E-05 1.06E-02 3.70E-05 0.00E+00 7.56E-07 I-132 1.21E-06 2.53E-06 8.99E-07 1.21E-04 2.82E-06 0.00E+00 1.36E-06 I-133 9.46E-06 1.37E-05 4.00E-06 2.54E-03 1.60E-05 0.00E+00 1.54E-06 I-134 6.58E-07 1.34E-06 4.75E-07 3.18E-05 1.49E-06 0.00E+00 9.21E-07 I-135 2.76E-06 5.43E-06 1.98E-06 4.97E-04 6.05E-06 0.00E+00 1.31E-06 Cs-134 2.83E-04 5.02E-04 5.32E-05 0.00E+00 1.36E-04 5.69E-05 9.53E-07 Cs-136 3.45E-05 9.61E-05 3.78E-05 0.00E+00 4.03E-05 8.40E-06 1.02E-06 Cs-137 3.92E-04 4.37E-04 3.25E-05 0.00E+00 1.23E-04 5.09E-05 9.53E-07 Cs-138 3.61E-07 5.58E-07 2.84E-07 0.00E+00 2.93E-07 4.67E-08 6.26E-07 Ba-139 1.06E-09 7.03E-13 3.07E-11 0.00E+00 4.23E-13 4.25E-06 3.64E-05 Ba-140 4.00E-05 4.00E-08 2.07E-06 0.00E+00 9.59E-09 1.14E-03 2.74E-05 Ba-141 1.12E-10 7.70E-14 3.55E-12 0.00E+00 4.64E-14 2.12E-06 3.39E-06 Ba-142 2.84E-11 2.36E-14 1.40E-12 0.00E+00 1.36E-14 1.11E-06 4.95E-07 La-140 3.61E-07 1.43E-07 3.68E-08 0.00E+00 0.00E+00 1.20E-04 6.06E-05 La-142 7.36E-10 2.69E-10 6.46E-11 0.00E+00 0.00E+00 5.87E-06 4.25E-05 Ce-141 1.98E-05 1.19E-05 1.42E-06 0.00E+00 3.75E-06 3.69E-04 1.54E-05 Ce-143 2.09E-07 1.38E-07 1.58E-08 0.00E+00 4.03E-08 8.30E-05 3.55E-05 Ce-144 2.28E-03 8.65E-04 1.26E-04 0.00E+00 3.84E-04 7.03E-03 1.06E-04 Pr-143 1.00E-05 3.74E-06 4.99E-07 0.00E+00 1.41E-06 3.09E-04 2.66E-05 Pr-144 3.42E-11 1.32E-11 1.72E-12 0.00E+00 4.80E-12 1.15E-06 3.06E-06 Nd-147 5.67E-06 5.81E-06 3.57E-07 0.00E+00 2.25E-06 2.30E-04 2.23E-05 W-187 9.26E-09 6.44E-09 2.23E-09 0.00E+00 0.00E+00 2.83E-05 2.54E-05 Np-239 2.65E-07 2.37E-08 1.34E-08 0.00E+00 4.73E-08 4.25E-05 1.78E-05

Reference:

Dose Factors for Co-57, Zn-69m, Br-82, Nb-97, Sb-124, Sb-125, Sn-125 are from Reference 17, Table 5.

All others from: Regulatory Guide 1.109, Table E-10.

NOTE: The tritium dose factor for bone is assumed to be equal to the total body dose factor. This assumes that tritium will act similarly in all organs (Reference 24).

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 165 of 205 Figure 7.1 - GASEOUS EFFLUENT RELEASE/DISCHARGE POINTS WBL-23-19 E2-167 of 207

Service Auxiliary Condenser Building Building Vacuum Vent Vent Shield Exhausts Building Unit 1 Unit 2 (one per unit) Vents 45 cfm WBN WBL-23-19 1-RE-90-400A 0

2-RE-90-400A 0-RE-90-132B 1,2-RE-90-119 0-RE-90-101B 0-RM-90-118 100 cfm HEPA Charcoal Waste Gas Decay Tanks - 600 cu ft each Fuel Handling Area TWO-UNIT OFFSITE DOSE CALCULATION Fans HEPA 60000 cfm Charcoal each Unit 1 Containment Various Charcoal E2-168 of 207 Purge System Sources Auxiliary HEPA 4000 cfm Building Fans each Instrument (2 of 4 fans at Pre-Filter Room Purge Unit 2 84,000 cfm Heater Fan 800 cfm HEPA HEPA Containment 14000 cfm each) 14000 cfm Charcoal Charcoal Purge same as ABGTS Unit 1 Train A Charcoal Charcoal Charcoal Charcoal MANUAL (ODCM)

(9000 cfm)

HEPA HEPA HEPA HEPA To ABGTS Pre-Filter Pre-Filter Pre-Filter Pre-Filter Spent Resin Tank Room Cask Decon Tank Room Heater Heater HEPA 1-RE-90-130 Cask Loading Area Moisture Sep Moisture Sep Charcoal Fuel Handling Area CDWE Building 1-RE-90-131 Charcoal Figure 7.2 - DETAIL OF GASEOUS RELEASE/DISCHARGE POINTS Fuel Transfer Canal EGTS HEPA Spent Fuel Pit Revision 6 Waste Packaging Area Incore Pre-Filter Reverse Osmosis Room Inst. Heater EGTS Room Room Unit 1 Unit 2 ABGTS Cask Decon Room Containment Train B Page 166 of 205 Atmosphere Annulus Annulus (9000 cfm)

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 167 of 205 Figure 7.3 - GASEOUS RADWASTE TREATMENT SYSTEM WBL-23-19 E2-169 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION MANUAL (ODCM) Revision 6 0 Page 168 of 205 Figure 7.4 - PLUME DEPLETION EFFECT FOR GROUND LEVEL RELEASES (All Stability Classes)

Source: Reference 5, Figure 2 WBL-23-19 E2-170 of 207

WBN OFFSITE DOSE CALCULATION Revision 4 0 MANUAL (ODCM) Page 169 of 205 Figure 7.5 - VERTICAL STANDARD DEVIATION OF MATERIAL IN A PLUME Source: Reference 5, Figure 1 WBL-23-19 E2-171 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 170 of 205 Figure 7.6 - RELATIVE DEPOSITION FOR GROUND LEVEL RELEASES (All Stability Classes)

Source: Reference 5, Figure 6 WBL-23-19 E2-172 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 171 of 205 8.0 - TOTAL DOSE 8.1 TOTAL MAXIMUM INDIVIDUAL DOSES To determine compliance with 40 CFR 190 as required in ODCM Surveillance Requirement 2.2.3.1 and 2.2.3.2, the dose contributions to the maximum individual from WBN radioactive effluents and all other nearby uranium fuel cycle sources will be considered. The annual dose to the maximum individual will be conservatively estimated by using the following equation:

4 D= S D(airtb) + D(airorg) + D(liqtb) + D(liqorg) + D(direct) (8.1) q=1 where:

q = calendar quarter D(airtb) = the total body air submersion dose (as calculated in Section 7.7)

D(airorg) = the critical organ dose from gaseous effluents (as calculated in Section 7.7),

D(liqtb) = the total body dose from liquid effluents (as calculated in Section 6.6.4),

D(liqorg) = the critical organ dose from liquid effluents (as calculated in Section 6.6.4),

D(direct) = the direct radiation dose measured by the environmental monitoring program.

The dose calculated is compared to the total body/organ limit of 25 mrem. If the dose is greater than 25 mrem, then the dose to each individual organ will be evaluated separately for comparison to the limits.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 172 of 205 9.0 - RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 9.1 MONITORING PROGRAM DESCRIPTION The REMP shall be conducted in accordance with the requirements of ODCM Control 1.3.1. The monitoring program described in Tables 9.1, 9.2, and 9.3, and in Figures 9.1, 9.2 and 9.3 shall be conducted.

The program consists of 3 major sections corresponding to the atmospheric pathway, the terrestrial pathway, and the waterborne pathway. In the atmospheric monitoring program, samples of air particulates and atmospheric radioiodines are collected from established stations. The stations are identified as Local Monitor (LM) stations, located at or near the UNRESTRICTED AREA BOUNDARY; Perimeter Monitor (PM) stations, located typically 3-10 miles from the site; and Remote Monitor (RM) stations, located greater than 10 miles from the site. The remote monitors are considered as background or control stations.

The terrestrial monitoring program includes the collection of milk, soil, and food crops. In addition, direct gamma radiation levels will be measured in the vicinity of the plant.

The waterborne monitoring program consists of the collection of samples of surface and ground water, drinking water, sediment, and fish. Samples are collected both downstream and upstream from the plant site.

The basic description of the REMP is included in Tables 9.1 and 9.2. Table 9.3 describes the locations of the direct gamma radiation detectors (dosimeter). Figures 9.1, 9.2, and 9.3 show the locations of the stations within one mile of the site, between one and five miles from the site, and greater than 5 miles from the site, respectively.

Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, sample unavailability, or malfunction of sampling equipment. If the latter, every effort shall be made to complete corrective action prior to the end of the next sampling period. Deviations from the required program will be reported in the Annual Radiological Environmental Operating Report in accordance with the provisions of ODCM Control 1.3.1.a and Administrative Control 5.1. Changes made in the program resulting from unavailability of samples will be reported in accordance with ODCM Control 1.3.1.c.

9.2 DETECTION CAPABILITIES Analytical techniques shall be such that the detection capabilities listed in Table 2.3-3 are achieved.

9.3 LAND USE CENSUS A land use survey shall be conducted in accordance with the requirements given in ODCM Control 1.3.2.

The results of the survey shall be reported in the Annual Radiological Environmental Operating Report.

Changes made in the REMP as a result of the Land Use Census will be reported in accordance with the provisions of ODCM Control 1.3.2.b.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 173 of 205 9.4 INTERLABORATORY COMPARISON PROGRAM Analyses shall be performed on radioactive materials supplied as part of an Interlaboratory Comparison Program which is in accordance with RG 4.15. A summary of the results obtained in the intercomparison shall be included in the Annual Radiological Environmental Operating Report.

If analyses are not performed as required corrective actions taken to prevent a recurrence shall be reported in the Annual Radiological Environmental Operating Report.

9.5 DATA REVIEW AND REPORTING Results of this program shall be reported in accordance with ODCM Administrative Control 5.1, Annual Radiological Environmental Monitoring Report. Analytical results exceeding the reporting levels outlined in ODCM Table 2.3-2 will be reported in accordance with the requirements of ODCM Control 1.3.1.b. As noted in WBN FSAR Section 11.6, routine releases from WBN will result in environmental concentrations well below the detection limits for environmental media, making correlations between calculated effluent release data and environmental measurements impractical. Only if radioactive releases from the site result in statistically measurable increases in environmental levels can dose correlations be made.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 174 of 205 Table 9.1 - REMP - MONITORING, SAMPLING, AND ANALYSIS (Page 1 of 5)

Exposure Sample Locations1 Sampling and Type and Frequency of Pathway Collection Frequency Analysis and/or Sample

1. DIRECT RADIATION 2 or more dosimeters Once per 92 days Gamma dose at least placed at locations (in once per 92 days different sectors) at or near the unrestricted area boundary in each of the 16 sectors 2 or more dosimeters placed at stations located approximately 5 miles from the plant in each of the 16 sectors 2 or more dosimeters in at least 8 additional locations of special interest, including at least 2 control stations WBL-23-19 E2-176 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 175 of 205 Table 9.1 - REMP - MONITORING, SAMPLING, AND ANALYSIS (Page 2 of 5)

Exposure Sample Locations1 Sampling and Type and Frequency of Pathway Collection Frequency Analysis and/or Sample

2. AIRBORNE Particulates 4 samples from locations Continuous sampler Particulate samples:

and (in different sectors) at or operation with Analyze for gross beta Radioiodines near the unrestricted area sample collection radioactivity 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months boundary once per 7 days following filter change.

(LM-1,2,3,and 4) (more frequently if Perform gamma required by dust isotopic analysis on 4 samples from loading) each sample if gross communities beta > 10 times that of approximately 6-10 miles control sample distance from the plant.

(PM-2,3,4,and 5) Composite at least once per 31 days (by 2 samples from control location) for gamma locations greater than 10 scan miles from the plant (RM-2 and 3) Radioiodine cartridge:

I-131 at least once per 7 days Atmospheric 4 samples from locations Continuous sampler Analyze each sample Moisture (in different sectors) at or operation with for H-3 near the SITE sample collection BOUNDARY biweekly (LM-1,2,3,and 4) 2 samples from communities approximately 4-10 miles distance from the plant.

(PM-2,5) 1 sample from control location greater than 10 miles from the plant (RM-3)

Soil Samples from same Once per year Gamma scan, Sr-89, location as air particulates Sr-90 once per year WBL-23-19 E2-177 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 176 of 205 Table 9.1 - REMP - MONITORING, SAMPLING, AND ANALYSIS (Page 3 of 5)

Exposure Sample Locations1 Sampling and Type and Frequency of Pathway Collection Frequency Analysis and/or Sample

3. WATERBORNE Surface TRM 529.3 Collected by Gamma scan and H-3 TRM 523.1 automatic sequential- analysis of each TRM 517.9 type sampler2 with sample composite samples collected at least once per 31 days Ground 5 sampling locations from Collected by Gross beta, gamma ground water monitoring automatic sequential- scan, and H-3 analysis wells adjacent to plant type sampler with of each sample composite samples 1 sampling location from collected at least groundwater source once per 31 days upgradient from the plant Ground 1 sampling location for the At least once per 31 Analyze each sample nearest (within 5 mile days for H-3 radius) offsite users of groundwater as the source of drinking water Drinking 1 sample at the first Collected by Gross beta, gamma potable surface water automatic sequential scan, and H-3 analysis supply downstream from type sampler2 with of each sample the plant (TRM 503.8) composite sample collected at least 1 sample at the next once per 31 days downstream potable surface water supplier (greater than 10 miles downstream) (TRM 473.0) 1 sample at control location3 (TRM 529.3)

Shoreline TRM 513, TRM 530.2 At least once per 184 Gamma scan of each days sample.

Pond One sample from at least Annually Gamma scan of each Sediment three locations in Yard sample Holding Pond WBL-23-19 E2-178 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 177 of 205 Table 9.1 - REMP - MONITORING, SAMPLING, AND ANALYSIS (Page 4 of 5)

Exposure Sample Locations1 Sampling and Type and Frequency of Pathway Collection Frequency Analysis and/or Sample

4. INGESTION Milk 1 sample from milk At least once per 15 Gamma isotopic and producing animals in each days I-131 analysis of each of 1-3 areas indicated by sample. Sr-89, Sr-90 the cow census where once per quarter doses are calculated to be highest. If samples are not available from a milk animal location, doses to that area may be estimated by projecting the doses from concentrations detected in milk from other sectors or samples of vegetation may be taken monthly where milk is produced but is not available.

At least 1 sample from a control location Fish One sample of At least once per 184 Gamma scan on edible commercially important days portion species (Freshwater Drum or Catfish) and one sample of recreationally important species (Crappie (White or Black), or Bass (Largemouth, Smallmouth, or Spotted)). One sample of each species from downstream of Watts Bar Nuclear Plant, Chickamauga reservoir, and Watts Bar reservoir.

One control sample of same species in areas not influenced by plant discharge WBL-23-19 E2-179 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 178 of 205 Table 9.1 - REMP - MONITORING, SAMPLING, AND ANALYSIS (Page 5 of 5)

Exposure Sample Locations1 Sampling and Type and Frequency of Pathway Collection Frequency Analysis and/or Sample Food 1 sample each of principal At least once per 365 Gamma scan on edible Products food products grown at days at the time of portion private gardens and/or harvest. The types of farms in the vicinity of the foods available will plant vary. Following is a list of typical foods A control sample from which may be similar food products available:

grown 15 to 30 km distant Cabbage and/or in the least prevalent wind Lettuce direction Corn Green Beans Potatoes Tomatoes Vegetation4 Samples from farms At least once per 31 I-131 and gamma scan producing milk but not days at least once per 31 providing a milk sample days 1 Sample locations, except for Food Products, are listed in Table 9.2 and 9.3, and shown in Figures 9.1, 9.2, and 9.3. The sample locations for Food Products are provided in the Annual Radioactive Effluent Release Report and are based on the current Land Use Survey as addressed in ODCM Surveillance Requirements 2.3.2.

2 Samples shall be collected by collecting an aliquot at intervals not exceeding 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

3 The surface water sample collected at TRM 529.3 is considered a control for the raw drinking water sample.

4 Vegetation sampling is applicable only for farms that meet the criteria for milk sampling and when milk sampling cannot be performed.

Other Notes: LM = Local Monitor PM = Perimeter Monitor RM = Remote Monitor TRM = Tennessee River Mile WBL-23-19 E2-180 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 179 of 205 Table 9.2 - REMP - SAMPLING LOCATIONS Map Approximate Indicator (I) Samples Location Stationa Sector Distance or b Number (mi) Control(C) Collected 2 PM-2 NW 7.0 I AP, CF, S, AM 3 PM-3 NNE 10.4 I AP, CF, S 4 PM-4 NE/ENEc 7.6 I AP, CF, S 5 PM-5 S 8.0 I AP, CF, S, AM 6 RM-2 SW 15.0 C AP, CF, S, AM 7 RM-3 NNW 15.0 C AP, CF, S, AM 8 LM-1 SSW 0.5 I AP, CF, S, AM 9 LM-2 NNE 0.4 I AP, CF, S, AM 10 LM-3 NNE 1.9 I AP, CF, S, AM 11 LM-4 SE 0.9 I AP, CF, S, AM 18 Well MW-07 S 0.6 I W 20 Farm N ESE 4.1 I M 23 Well #5 N 0.5 C W 25 TRM 517.9 - 9.9d I SW 26 TRM 523.1 - 4.7d I SW 27 TRM 529.3 - 1.5d C SW, PWe 31 TRM 473.0 (C.F. Industries) - 54.8d I PW 32 TRM 513.0 - 14.8d I SS 33 TRM 530.2 - 2.4d C SS 35 TRM 503.8 (Dayton) - 24.0d I PW 37 TRM 522.8-527.8 (Downstream of - - I F WBNP) 38 TRM 471-530 (Chickamauga Lake) - - I F 39 TRM 530-602 (Watts Bar Lake) - - C F 81 Yard Pond SSE/S/SSW Onsite I PS 82 Well A SSE 0.6 I W 83 Well B SSE 0.5 I W 84 Well C ESE 0.3 I W 85 Well F SE 0.3 I W 86 Farm HH SSW 1.4 I W 88 Farm SV ENE 23.4 C M a See Figures 9.1, 9.2, and 9.3 b Sample codes: AP = Air particulate filter; CF = Charcoal Filter; F = Fish; S = Soil; AM = atmospheric moisture, M = Milk; PW =

Public Water; SS = Shoreline Sediment; SW = Surface Water; W= Well Water, PS= Pond Sediment c Station located on boundary between these sectors d

Distance from plant discharge (TRM 527.8) e The surface water sample from TRM 529.3 is also considered a control for raw Public Water samples.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 180 of 205 Table 9.3 - REMP - DOSIMETRY LOCATIONS Map Station Sector Approx. On/ Map Station Sector Approx. On/

Location Dist. Offsitea Location Dist. Offsitea Number (mi) Number (mi) 2 NW-3 NW 7.0 Off 55 SSE-1A SSE 0.6 On 3 NNE-3 NNE 10.4 Off 56 SSE-2 SSE 5.8 Off 4 ENE-3 ENE 7.6 Off 57 S-1 S 0.7 On 5 S-3 S 7.8 Off 58 S-2 S 4.8 Off 6 SW-3 SW 15.0 Off 59 SSW-1 SSW 0.8 On 7 NNW-4 NNW 15.0 Off 60 SSW-3 SSW 5.0 Off 10 NNE-1A NNE 1.9 On 62 SW-1 SW 0.8 On 11 SE-1A SE 0.9 On 63 SW-2 SW 5.3 Off 12 SSW-2 SSW 1.3 On 64 WSW-1 WSW 0.9 On 14 W-2 W 4.8 Off 65 WSW-2 WSW 3.9 Off 40 N-1 N 1.2 On 66 W-1 W 0.9 On 41 N-2 N 4.7 Off 67 WNW-1 WNW 0.9 On 42 NNE-1 NNE 1.2 On 68 WNW-2 WNW 4.9 Off 43 NNE-2 NNE 4.1 Off 69 NW-1 NW 1.1 On 44 NE-1 NE 0.9 On 70 NW-2 NW 4.7 Off 45 NE-2 NE 2.9 Off 71 NNW-1 NNW 1.0 On 46 NE-3 NE 6.1 Off 72 NNW-2 NNW 4.5 Off 47 ENE-1 ENE 0.7 On 73 NNW-3 NNW 7.0 Off 48 ENE-2 ENE 5.8 Off 74 ENE-2A ENE 3.5 Off 49 E-1 E 1.3 On 75 SE-2A SE 3.1 Off 50 E-2 E 5.0 Off 76 S-2A S 2.0 Off 51 ESE-1 ESE 1.2 On 77 W-2A W 3.2 Off 52 ESE-2 ESE 4.4 Off 78 NW-2A NW 3.0 Off 54 SE-2 SE 5.3 Off 79 SSE-1 SE 0.5 On a Dosimeters designated onsite (On ) are those located two miles or less from the plant. Dosimeters designated offsite (Off) are those located more than two miles from the plant.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 181 of 205 Figure 9.1 - REMP LOCATIONS WITHIN ONE MILE OF THE PLANT WBL-23-19 E2-183 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 182 of 205 Figure 9.2 - REMP LOCATIONS FROM ONE TO FIVE MILES FROM THE PLANT WBL-23-19 E2-184 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 183 of 205 Figure 9.3 - REMP LOCATIONS GREATER THAN FIVE MILES FROM THE PLANT WBL-23-19 E2-185 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 184 of 205

10.0 REFERENCES

1. NUREG-1301, "Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors," Generic Letter 89-01, Supplement No. 1. April 1991.

2. Draft NRC Generic Letter, "Guidance for Modification of Technical Specifications to Reflect (a)

Revisions to 10 CFR Part 20, 'Standards for Protection Against Radiation' and 10 CFR 50.36a,

'Technical Specifications on Effluents from Nuclear Power Reactors', (b) Related Current Industry Initiatives and (c) Miscellaneous Related Editorial Clarifications."

3. NUREG-0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants," September 1978.

4. Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I," Revision 1, October 1977.

5. Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors," Revision 1, July 1977.

6. Regulatory Guide 1.113, "Estimating Aquatic Dispersion of Effluents from Accidental and Routine Reactor Releases for the Purpose of Implementing 10 CFR Part 50 Appendix I," Revision 1, April 1977.

7. Regulatory Guide 1.21, "Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Reactors," Revision 1, June 1974.

8. Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979.

9. WBN Final Environmental Statement, WBNP Units 1,2,3, Chattanooga, TN, November 9, 1972.

10. WBN Final Safety Analysis Report.

11. TVA Memorandum, E. E. Driver to R. B. Maxwell, "Watts Bar Nuclear Plant Dispersion," December 3, 1984.

12. TVA Memorandum, Edwin M. Scott to Betsy Eiford-Lee, "Fish Harvest Estimates for the Revision of the QWATA Computer Code," December 15, 1987.

13. TVA Memorandum, D. L. Stone to B. Eiford-Lee, "Surface area Computations for the Revision of the QWATA Code," April 26, 1988.

14. Final Supplemental Environmental Impact Statement, Completion and Operation of Watts Bar Nuclear Plant Unit 2, Tennessee Valley Authority, June, 2007.

15. DOE-TIC-11026, "Radioactive Decay Data Tables - A Handbook of Decay Data for Application to Radiation Dosimetry and Radiological Assessment," D. C. Kocher, 1981.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 185 of 205

16. ORNL 4992, "Methodology for Calculating Radiation Doses from Radioactivity Released to the Environment," March 1976.

17. NUREG-0172, "Age Specific Radiation Dose Commitment Factors for a One Year Chronic Intake,"

November 1977.

18. Dose-Rate Conversion Factors for External Exposure to Photon and Electron Radiation from Radionuclides Occurring in Routine Releases from Nuclear Fuel Cycle Facilities, D. C. Kocher, Health Physics Volume 38, April 1980.

19. TVA Memorandum, John P. Blackwell to M. L. Millinor, "Development of Atmospheric Dispersion Adjustment Factors for Application in the Watts Bar Nuclear Plant Offsite Dose Calculation Manual,"

November 16,1990.

20. International Commission on Radiological Protection Publication 23, "Report of the Task Group on Reference Man," 1975.

21. NUREG/CR-1004, "A Statistical Analysis of Selected Parameters for Predicting Food Chain Transport and Internal Dose of Radionuclides," October 1979.

22. "Tennessee Valley Authority Effluent Management System (48-8434) Technical Reference Manual,"

Canberra Nuclear - Nuclear Data Systems Division, January 1994.

23. TVA Memorandum, M. S. Robinson to Radiological Hygiene Branch Files, "Cross-Sectional Areas of Nuclear Reactor Buildings," November 2, 1977.

24. Sequoyah Nuclear Plant Offsite Dose Calculation Manual.

25. TVA Quarterly Water Dose Assessment Computer Code Documentation, Revision 2.0, November 1989

26. TVA Memorandum, M. C. Brickey to M. E. Greeno, "Watts Bar Nuclear Plant Offsite Dose Calculation Manual - Changes Required - Revised agreements based on meeting between Nuclear Engineering and Chemistry on March 9, 1994," March 17, 1994

27. TVA Memorandum, Ed Steinhauser and Stan Nelson to Mike Greeno, "Offsite Dose Calculation Manual for Systems 14 and 15," February 10, 1994

28. TVA Memorandum, M. C. Brickey to Mike Greeno, "ODCM Change Request," March 3, 1995

29. NDP-00-0344, Revision 1, Implementation and Utilization of Tritium Producing Burnable Absorber Rods (TPBARS) in Watts Bar Unit 1.

30. WBN Unit 1 and Unit 2 Technical Specifications

31. TVA Technical Paper, NPG Site Carbon-14 Production and Release Estimates,: dated April 19, 2011

32. DCP 66673,Increase Minimum CTBD Dilution Flow for Offsite Radwaste releases from 20,000 to 30,000 gpm

33. TVA Letter to NRC, CNL-17-144, Application to Revise Watts Bar Unit 2 Technical Specification 4.2.1, Fuel Assemblies, and Watts Bar Units 1 and 2 Technical Specifications Related to Fuel Storage (WBN-TS-17-028), dated December 20, 2017 (ML17354B282)

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 186 of 205 11.0 SOURCE NOTES SOURCE Source NOTE Document Summary 1 NCO850192001 TVA response as described in NRC evaluation SER No. 5, Section 11.7, paragraph 4.

2 NRC IE Bulletin 82-49 Adjust noble gas monitor setpoints based on chamber SQN LER 50-327/92019 pressure.

3 Source Note deleted and calibration interval changed to 18 months per NE SSD 1-F-90-400A,B,C,D,-452 and 2-F-90-400C,-452.

4 NCO920030880 Specifications will ensure compliance with 10 CFR 50.34a (ALARA) and to ensure that concentrations of radioactive effluents released to unrestricted areas are within the limits specified in 10 CFR 20.106 (20.1301). The reporting requirements of 50.36a (a)(2) will also be included in these specifications.

5 NCO920042424 To ensure compliance with Radiological Effluent Tech Specs, cumulative dose calculations will be performed once per month.

6 NCO920042422 ODCM shall contain Radiological Environmental Monitoring Program sampling and analysis frequencies.

7 NCO920042500 Dose Calculations will be performed monthly to ensure that the dose rate in unrestricted areas due to gaseous effluents from the reactor at the site will be limited to the prescribed values.

8 NCO920042501 A complete analysis utilizing the total estimated liquid release for each calendar quarter will be performed and reported as required by Technical Specifications.

9 NCO920042502 Dose projections will be performed in accordance with Technical Specifications.

10 NCO920042423 Post-release analysis will be done using actual release data to ensure that limits were not exceeded. This data and setpoints will be recorded in auditable records by plant personnel.

11 WBPER960319 Operability requirements for Kurz isokinetic sampling panels will be added to the ODCM.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 187 of 205 SOURCE Source NOTE Document Summary 13 WBPER970486 Added operability requirements for heat trace on NCO970059002 iodine/particulate sample lines for Condenser Vacuum NCO970059004 Exhaust and Shield Building Exhausts.

15 WBPER970492 Changed allowable monitor tolerance factor to 2.0 for gaseous monitor setpoint calculations.

16 WBPER971422 Changed submittal requirements to correspond to CFR requirements.

17 WBPER970332 Changed maximum design release flow rate for WGDT from 55 cfm to 100 cfm to reflect current design output.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 188 of 205 APPENDIX A - NOTATION CONVENTIONS (Page 1 of 7)

Symbol Key This symbol key provides a cross-reference between the symbols used in the Watts Bar ODCM and those symbols used in the Regulatory Guidance documents for the ODCM (References 1, 2, 3, 4, and 5). The Watts Bar symbol is given, along with a definition of the term; then the reference document is given for that term, along with the corresponding symbol used in that reference.

Some terms may be subscripted in the WBN ODCM text and in the regulatory document. For simplification, no subscripts are included in this symbol key. The use of subscripts is standard throughout the WBN ODCM as follows:

subscript a: age group subscript i: radionuclide (T is used to denote tritium and C14 is used to denote C-14) subscript j: organ subscript k: windspeed category subscript l: Pasquill stability class subscript m: Public Water Supply or population element subscript P: dose pathway subscript r: river reach WBN ODCM Source Symbol Definition Source Reference Symbol a Minimum building cross-sectional area R.G. 1.111 (p. 11) Dz2 A Liquid dose factor NUREG-0133 (p. 15) A a Cumulative dose for a quarter N/A ADC Average decay correction N/A AF Allocation Fraction N/A APR Size of river reach N/A AF Dose factor for fish ingestion NUREG-0133 (p. 15)

AR Dose factor for shoreline recreation N/A ATMW Ratio of average to maximum ingestion N/A rates BKG Background N/A B Bioaccumulation factor NUREG-0133 (p. 16) BF b Projected dose for a release N/A Biv Transfer factor for nuclide i from soil to R.G. 1.109 (p. 3) Biv vegetation BR Breathing rate NUREG-0133 (p. 25) BR c Air concentration R.G. 1.109 (p. 25) c c Any anticipated additional dose in the N/A next month from other sources C Concentration NUREG-0133 (p. 15) C

/Q Relative concentration R.G. 1.109 (p. 5) /Q WBL-23-19 E2-190 of 207

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Symbol Key WBN ODCM Source Symbol Definition Source Reference Symbol d Number of days in the current quarter prior N/A to the time of a release D Dose NUREG-0133 (p. 15) D DNF Near-field dilution NUREG-0133 (p. 15) F D/Q Relative deposition R.G. 1.109 (p. 24) d DFB Dose Conversion Factor for total body R.G. 1.109 (p. 6) DFB submersion DFb Dose Conversion Factor for beta air dose R.G. 1.109 (p. 5) DFb DFG Dose conversion factor for standing on NUREG-0133 (p. 26) DFG contaminated ground DFg Dose conversion factor for gamma air dose R.G. 1.109 (p. 5) DFg DF Ingestion dose conversion factor NUREG-0133 (p. 16, 33) DF, DFL DFA Inhalation Dose Conversion Factor NUREG-0133 (p. 25) DFA DFS Dose conversion factor for skin submersion R.G. 1.109 (p. 6) DFS dose DR Dose rate N/A dr Relative deposition rate R.G. 1.111 (p. 12) dr E Efficiency NUREG-1301 (p. 40) E ECL Effluent Concentration Limit N/A ER Expected Monitor Response N/A F Dilution flow NUREG-0133 Addendum A F f Waste flow NUREG-0133 Addendum A f Ff Transfer factor from cow's feed to beef R.G. 1.109 (p. 28) Ff fg Fraction of stored vegetables grown locally R.G. 1.109 (p. 7) fg FISH Average amount of fish ingested N/A fkl Joint relative frequency of occurrence of R.G. 1.111 (p. 9) n/N winds in windspeed class k and stability class l fL Fraction of fresh leafy vegetables grown R.G. 1.109 (p. 7) Fl locally Fm Transfer factor from animal's feed to milk R.G. 1.109 (p. 27) Fm fP Fraction of population in an age group R.G. 1.109 (p. 30) f fp Fraction of time animal spends on pasture R.G. 1.109 (p. 28) fp WBL-23-19 E2-191 of 207

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Symbol Key WBN ODCM Source Symbol Definition Source Reference Symbol fs Fraction of time animal spends on R.G. 1.109 (p. 28) fs stored feed H Absolute humidity of the atmosphere R.G. 1.109 (p. 27) H HRSVIS Length of shoreline recreation visit N/A HVST Fish harvest for the Tennessee River N/A Kc Transfer coefficient from water to R.G. 1.109 (p. 14) Kc shoreline sediment Radioactive decay constant N/A E Effective decay constant R.G. 1.109 (p. 4) E LLD Lower Limit of detection NUREG-1301 (p. 40) LLD w Weathering decay constant R.G. 1.109 (p. 4) w M Mass density of sediment R.G. 1.109 (p. 14) M n Number of compass sectors N/A P Effective surface density of soil. R.G. 1.109 (p. 3) P p Fraction of radionuclide remaining in R.G. 1.111 (p. 12) p plume POP Population R.G. 1.109 (p. 30) P POPF Population dose due to fish ingestion R.G. 1.109 (p. 30) DP POPR Total recreation population dose R.G. 1.109 (p. 30) DP POPWTR Population dose due to water ingestion R.G. 1.109 (p. 30) DP Q Release rate NUREG-0133 (p. 22) Q q Total release in a period NUREG-0133 (p. 29) q Qf Milk animal's consumption rate R.G. 1.109 (p. 3) Qf r Fraction of activity retained on pasture R.G. 1.109 (p. 3) r grass.

RP Gaseous Dose Factor for Pathway P NUREG-0133 (p. 26) P RI Inhalation dose factor NUREG-0133 (p. 26) P RG Ground plane dose factor NUREG-0133 (p. 26) P RCP Pasture grass-milk animal-milk NUREG-0133 (p. 26) P ingestion RCS Stored feed-milk animal-milk ingestion NUREG-0133 (p. 26) P RMP Pasture grass-beef ingestion NUREG-0133 (p. 26) P RMS Stored feed-beef ingestion NUREG-0133 (p. 26) P RVF Fresh leafy vegetable ingestion NUREG-0133 (p. 26) P WBL-23-19 E2-192 of 207

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Symbol Key WBN ODCM Source Symbol Definition Source Reference Symbol RVS Stored vegetable ingestion NUREG-0133 (p. 26) P R Sum of the ratios N/A RATIO Ratio of average to maximum dose N/A REQFRA Fraction of yearly recreation which N/A occurs in a quarter rf Recreation factor N/A RF River flow N/A sb Standard deviation NUREG-1301 (p. 40) sb SF Safety factor N/A SHVIS Shoreline visits per year N/A Smax Setpoint corresponding to the ODCM N/A Limit z Vertical dispersion coefficient R.G. 1.111 (p. 11) z z Vertical dispersion coefficient R.G. 1.111 (p. 11) sz T Duration of release NUREG-0133 (p. 15) t t Elapsed time between midpoint of NUREG-1301 (p. 40) t sample collection and counting time TAF Terrain adjustment factor N/A tb Time period over which accumulation R.G. 1.109 (p. 14, 26) tb, t on the ground is evaluated tcb Time for receptor to consume a whole N/A beef td Distribution time for water, fish, milk, R.G. 1.109 (p. 4) tp beef, or vegetables tcsf Time between harvest of stored feed R.G. 1.109 (p. 4) th and consumption by animal te Exposure time in garden for fresh leafy R.G. 1.109 (p. 4) te and/or stored vegetables tep Time pasture is exposed to deposition R.G. 1.109 (p. 4) te tesf Time stored feed is exposed to R.G. 1.109 (p. 4) te deposition TFDOS Individual fish ingestion dose R.G. 1.109 (p. 30) D tfm Transport time from milking to receptor N/A tfm thc Average time between harvest of R.G. 1.109 (p. 4) th vegetables and their consumption and/or storage WBL-23-19 E2-193 of 207

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Symbol Key WBN ODCM Source Symbol Definition Source Reference Symbol ts Transport time from slaughter to R.G. 1.109 (p. 28) ts consumer TSHDOS Total shoreline dose rate R.G. 1.109 (p. 30) D tsv Time period over which stored N/A vegetables are consumed TWDOS Total individual water dose R.G. 1.109 (p. 30) D u Wind speed R.G. 1.111 (p. 9) u Uf Fish consumption rate NUREG-0133 (p. 16) UF UFL Consumption rate of fresh leafy vegetables R.G. 1.109 (p. 7) UL Um Meat ingestion rate R.G. 1.109 (p. 7) UF Up Milk ingestion rate R.G. 1.109 (p. 7) Up UR Recreation usage factor R.G. 1.109 (p. 14) U US Consumption rate of stored vegetables R.G. 1.109 (p. 7) UV by the receptor Uw Water consumption rate NUREG-0133 (p. 16) UW V Sample size NUREG-1301 (p. 40) V W Dispersion factor NUREG-0133 (p. 22) W SWF Shoreline width factor R.G. 1.109 (p. 14) W x Downwind distance R.G. 1.111 (p. 11) x Y Radiochemical yield NUREG-1301 (p. 40) Y Yf Agricultural yield for fresh leafy R.G. 1.109 (p. 4) Yv vegetables Yp Agricultural productivity by unit area of R.G. 1.109 (p. 4) Yv pasture grass Ysf Agricultural productivity by unit area of R.G. 1.109 (p. 4) Yv stored feed Ysv Agricultural yield for stored vegetables R.G. 1.109 (p. 4) Yv WBL-23-19 E2-194 of 207

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List of Acronyms ABGTS - Auxiliary Building Gas Treatment System ALARA - As Low As Reasonably Achievable CDCT - Cask Decontamination Collector Tank CFR - Code of Federal Regulations CTBD - Cooling Tower Blowdown CVCS - Chemical Volume Control System CVE - Condenser Vacuum Exhaust EPA - Environmental Protection Agency ERCW - Essential Raw Cooling Water ESF - Engineered Safety Feature FI - Flow Indicator FSAR - Final Safety Analysis Report GRTS - Gaseous Radwaste Treatment System GWS- Groundwater Sump HCT - High Crud Tanks HEPA - High Efficiency Particulate Air LLD - Lower Limit of Detection LM - Local Monitor LPF - Loop Flow LRTS - Liquid Radwaste Treatment System NIST - National Institute of Standards and Technology NRC - Nuclear Regulatory Commission NRWT - Non-Reclaimable Waste Tank ODCM - Offsite Dose Calculation Manual PM - Perimeter Monitor PWS - Public Water Supply REMP - Radiological Environmental Monitoring Program RE - Radiation Element RM - Remote Monitor SGBD - Steam Generator Blowdown SQN - Sequoyah Nuclear Plant SR - Surveillance Requirement SSP - Site Standard Practice TBS - Turbine Building Sump TRM - Tennessee River Mile TS - Technical Specifications TWST - Tritiated Water Storage Tank WBN - Watts Bar Nuclear Plant WGDT - Waste Gas Decay Tank WBL-23-19 E2-195 of 207

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List of Units The following units are used consistently throughout the WBN ODCM. The table is included to provide the reader with the unit corresponding to each abbreviation used.

cc cubic centimeters cfs cubic feet per second Ci Curie cpm counts per minute d day g gram gpm gallons per minute h hour kg kilogram L liter lb pound m meters

µCi microcurie mi mile min minute ml milliliter mrad millirad mrem millirem pCi picocurie s second y year Other Notes:

Equations in the text of the WBN ODCM are numbered by section, i.e., equations in Section 6.0 are numbered as 6.1, 6.2, etc. Only final equations are numbered; any equations which are reproduced from Regulatory Guides or NUREGs and used to derive a WBN specific equation are not numbered.

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NOTE: All future deviations to the guidance provided in NUREG-1301 will be documented in the ODCM revision log.

1. Controls 1.0.1 and 1.0.2 and Surveillance Requirements 2.0.1-2.0.4 have been replaced by the most recent WBN LCOs 3.0.1 and 3.0.2 and SRs 3.0.1-3.0.4. This has been done to ensure consistency between the WBN TS and the WBN ODCM.

2. Control 1/2.1.1 NUREG-1301 does not list the applicability for liquid monitoring instrumentation.

Applicability for WBN liquid effluent instrumentation is defined in Table 1.1-1 to match the requirements provided in the ACTION statements associated with the table.

Table 2.1 Channel calibration for the Diffuser Discharge Flow Indicator is changed to yearly due to requirements in the NPDES permit. This is more conservative than required by NUREG-1301.

Table 2.1 The Channel Operational Test Frequency for items 3.a (Radwaste Flow), 3.b (Steam Generator Blowdown Flow), and 3.c (Condensate Demineralizer Flow) are N/A. These items do not have an associated alarm, interlock, and/or trip setpoint, therefore a Channel Operational Test cannot be performed for these items.

Table 2.1 Footnote 1 is deleted from Items 1.b (Steam Generator Blowdown Radiation) and 1.c (Condensate Demineralizer radiation). Item 1.b and 1.c generate an automatic isolation on level above the alarm/trip setpoint, not instrument malfunction.

Table 2.1 The circuit failure test associated with the channel operational test (COT) has been deleted. By definition a COT verifies the channel can process an input signal and actuate output devices and that there are no circuit failures that impact the required functions. The notes in Tables 2.1-2 which supplement the COT definition require tests to verify operation of specific features that alert the operator of a malfunction. These include downscale failure (loss of counts), controls not in operate mode (switch mispositioned), and loss of sample flow. Circuit failure could be caused by any number of subcomponent failures. There is not a specific circuit that is monitoring for each of those subcomponent failures.

3. Control 1/2.1.2 - Table 1.1-2 limits operability for WGDT release instrumentation to periods of release.

Table 1.1 Includes operability requirements for heat trace on iodine/particulate sample lines for Condenser Vacuum Exhaust and Shield Building Exhaust.

Tables 1.1-2 and 2.1-2 require that both Unit 1 and 2 Shield Building Exhaust monitors must meet operability requirements to operate either unit. This is because releases through the ABGTS may exit from either unit's Shield Building Vent.

Table 1.1 Wording is added to clarify the Shield Building Vent monitor noble gas channel operability requirements. This monitor has the capability to read in units of µCi/cc or µCi/s. The usual channel will read in µCi/s, but this wording allows the monitor to be switched to read in µCi/cc if the flow channel becomes inoperable to eliminate the need for compensatory samples.

Table 1.1 The Applicability for Items 2.a, c , and d (Condenser Vacuum Exhaust (CVE) radiation monitors and flow instruments) is MODES 1, 2, 3, and 4 and during MODES 5 and 6 with CVE System in operation. The radiation monitoring instrumentation does not have to be operable if the Exhaust system is not in operation.

Table 1.1 Items 3.f and 4.e were added as part of the changes associated with operating with a TPBAR core.

Table 2.1 Includes surveillance requirements for heat trace on iodine/particulate sample lines for Condenser Vacuum Exhaust and Shield Building Exhaust.

Table 2.1 The channel operational test frequency for 3.b (Shield Building Exhaust Iodine and Particulate Sampler), and 4.b (Auxiliary Building Exhaust Iodine and Particulate Sampler) of Table 2.1-2 are N/A. These items have no associated alarm, interlock, and/or trip setpoint, therefore a Channel Operational Test cannot be performed.

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Table 2.1 The channel check requirements for all iodine and particulate samplers are N/A. A CHANNEL CHECK is defined as verifying indication of flow during periods of release. The channel check requirement is intended to demonstrate that the sampler is operable. An indication of flow through the sampler verifies its operability. The daily channel check for the sampler flow(s) and the weekly sampler filter changeout required by the sampling and analysis program in Table 2.2-2 provide this indication of operability, therefore a channel check requirement in this Table is redundant.

Table 2.1 The circuit failure test associated with the channel operational test (COT) has been deleted. By definition a COT verifies the channel can process an input signal and actuate output devices and that there are no circuit failures that impact the required functions. The notes in Tables 2.1-2 which supplement the COT definition require tests to verify operation of specific features that alert the operator of a malfunction. These include downscale failure (loss of counts), controls not in operate mode (switch mispositioned), and loss of sample flow. Circuit failure could be caused by any number of subcomponent failures. There is not a specific circuit that is monitoring for each of those subcomponent failures.

CHANNEL OPERATIONAL TEST frequencies may be extended if justified. The justification includes meeting a 95/95 confidence acceptance criterion based on hardware of similar design.

4. Control 1/2.1.3 is added to place the meteorological monitoring requirements in the ODCM.

5. Control 1/2.2.1.1 - Table 2.2-1, the requirements for sampling of continuous liquid release pathways (TBS and SGBD) are for daily grab samples rather than a continuous sampler. This is consistent with the requirements of the NRC approved SER and SSER 16 for WBN and the WBN Unit 1 ODCM, Revision 3 (i.e., SER 9407280068, dated July 26, 1994). The definition of a composite liquid effluent sample is somewhat different than that given in NUREG-1301 (WBN will be creating the composite in the lab from the grab samples, the NUREG is referring to a composite sample from a continuous sampler). The analyses for these daily grab samples are daily, rather than weekly. Each sample will be analyzed, rather than compositing the samples for the week.

Table 2.2 Footnote 6 is added to require that the continuous liquid release points be sampled only if primary to secondary leakage is identified, and either the monitor must be set to two times background OR compensatory samples are being collected. This is consistent with requirements in the SQN effluent control program. The activity determination is clarified to state that principal gamma emitters will be used for the determination.

6. Control 1/2.2.2.1:

Table 2.2-2 is reformatted from the NUREG version to place more of the requirements in the table itself, and eliminate some of the footnotes. This allows easier implementation of the sampling requirements in plant procedures.

a. Table 2.2-2 requires sampling of containment purge and vent following shutdown, startup, or a thermal power change exceeding 15% of RATED THERMAL POWER within a 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months period. This is consistent with the NUREG, but WBN goes further to state that this does not need to be done if analysis shows that the DEI has not increased by a factor of 3 or more, AND if the lower containment noble gas monitor does not show an increase of a factor of 3 or more. This is consistent with the NRC approved SER and SSER 16 for WBN and the WBN Unit 1 ODCM, Revision 3 (i.e., SER 9407280068, dated July 26, 1994).

b. Table 2.2-2, Footnote 8 details applicability and timing requirements for sampling of the containment for purges. This note is consistent with one in the SQN ODCM, except that MODE requirements and times are different.

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c. Table 2.2-2, Footnote 8 details applicability and timing requirements for sampling for incore instrument room purges. This note is consistent with one in the SQN ODCM, except that MODE requirements and times are different.

d. Table 2.2-2, Footnote 10 details applicability requirements for sampling of the containment for venting. This note is consistent with one in the SQN ODCM, but details are different.

e. Table 2.2-2, the Shield Building Exhaust is excluded from the monthly requirement for grab sampling to analyze for noble gas and tritium, since all releases through this point will have been quantified previously.

f. Table 2.2-2, Footnote 11 excludes the Condenser Vacuum Exhaust from the requirements for sampling until a primary to secondary leak is identified. The activity determination is clarified to state that principal gamma emitters will be used for the determination.

g. Table 2.2-2, the table limits the principal gamma emitters for grab samples to the noble gas nuclides to clarify that particulate releases are quantified from filter analyses.

h. Table 2.2 Footnotes 3 and 7 allow compensatory grab samples to be used to determine if activity levels have increased during periods of radiation monitor inoperability.

i. Table 2.2 Requirements for continuous tritium sampling were added for the Auxiliary Building Exhaust, Unit 1 Shield Building, and Unit 2 Shield Building Exhaust to quantify releases during the irradiation and storage of TPBARs. Since tritium samples will be collected continuously footnotes 4 and 5, which required tritium grab samples, were removed. The use of continuous tritium samplers provides a more accurate account of the tritium released than grab samples.

j. Footnotes 8 and 10 clarifies that only the containment compartment to be released needs to be sampled. This will eliminate unnecessary sampling.

k. Table 2.2 Prior to release each Waste Gas Decay Tank will require tritium analysis as part of the changes associated with operating with a TPBAR core.

7. Control 1/2.3.1:

a. Table 2.3 the drinking water control sample location is defined in footnote 9 to be the upstream surface water sample.

b. Requirements for drinking water sample analysis differ from NUREG-1301. Due to the large downstream distance of the first public water supply (> 10 miles) and the volume of dilution water available, doses due to water ingestion will be very low under normal circumstances. This situation applies at both SQN and BFN and is reflected in their Environmental Monitoring Programs.

c. Text is added to Table 2.3-1 footnote 8 to state that the hydraulic gradient of the groundwater at the WBN site is such that the groundwater will move from the site toward the river, therefore groundwater sampling is not required.

d. Table 2.3-1 footnote 3 is added to clarify identification of control samples for iodine and particulate airborne monitoring.

e. Table 2.3-1, The invertebrate sampling requirements have been relocated to the waterborne section of the Table to more accurately reflect the purpose of these samples. There is negligible ingestion of invertebrates from the Tennessee River.

8. BASES 1/2.1.3 - Bases for the meteorological monitoring instrumentation Control are in the ODCM.

9. BASES 1/2.2.1.1 - An additional reference is given for further LLD discussion (ARH-SA-215, June 1975). Allocation of activity between the reactor units for dose calculation purposes is discussed in more detail.

10. BASES 1/2.2.1.2 - Text is added to explain that the dose for composited nuclides will be calculated using the values from the previous compositing period.

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11. Not used.

12. BASES 1/2.2.2.1 - An additional reference is given for further LLD discussion (ARH-SA-215, June 1975). Allocation of activity between the reactor units for dose calculation purposes is discussed in more detail.

13. BASES 1/2.2.2.2 and 1/2.2.2.4 - Allocation of activity between the reactor units for dose calculation purposes is discussed in more detail.

14. BASES 1/2.3.1 - An additional reference is given for further LLD discussion (ARH-SA-215, June 1975).

15. The definitions of Member of the Public and Restricted area are not consistent with those given in NUREG-1301. This is due to the revision to 10 CFR 20 implemented by TVA on 1/1/94. The definitions are consistent with that regulation. Similar changes are made to the BASES sections to clarify the wording where these definitions are used. Figure 3.1 shows the locations of these boundaries and areas. A calculation is given in Section 7.7.6 for a member of the public inside the SITE BOUNDARY demonstrating that the location of the unrestricted area boundary on the opposite side of the Tennessee River meets the intent of the regulation.

16. The Source Check definition is changed to reflect changes made in the definition for SQN (revision 27). The new definition will allow the use of internal test circuits in lieu of a radioactive source (some monitors use an LED light source to provide the check signal to the photomultiplier tube).

17. The Operational Modes Table (Table 3.2) is consistent with the WBN TS.

18. NUREG-1301 provides guidance for sampling and/or monitoring of specific media, which includes invertebrates. TVA has determined that within the vicinity of WBN, there are no invertebrates that are harvested for commercial or recreational consumption. Therefore, TVA has deleted all requirements regarding invertebrate sampling and/or monitoring for WBN.

19. NUREG-1301 provides guidance for CHANNEL OPERATIONAL TEST (COT) frequency. TVA has extended the COT frequency guidance of NUREG-1301 based on the results of TVA calculation WBN-EBB-EDQ-1090-99005, Extending Channel Operational Test Frequency for Radiation Monitors. The COT frequency was evaluated utilizing the binomial density function referenced in NUREG-1475 to analyze the work orders against 95/95 criteria. The radiation monitoring loops (and subsequent work orders) were divided into four categories due to differing radiation monitoring equipment function, and calibration frequency. Each category was analyzed separately to the 95/95 probability and confidence that the attribute of interest is indicative of the population. The attribute of interest for this statistical test is the as-left band.

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This Appendix establishes the minimum requirements for preparation, review, and approval of the Watts Bar Nuclear Plant Offsite Dose Calculation Manual. This Appendix also implements the requirements of ODCM Section 5.3 and WBN TS 5.7.2.3.

1.0 Reviewer Responsibilities 1.1 Affected Organization Review (AOR)

The identification of affected organizations is the responsibility of the Sponsor and applies to all revisions of the ODCM.

The affected organizations shall ensure that their reviewers have adequate understanding of the requirements and intent of the ODCM and access to pertinent background information.

The AO reviews the draft for impact on the organization and adequate interface - not technical content.

1.2 Independent Qualified Review (IQR)

An independent qualified review (IQR) is the process of performing an independent technical review by Qualified Reviewers (QR) of activities potentially affecting nuclear safety.

The IQR shall NOT include the person who prepared the ODCM revision.

An IQR is performed by QRs designated by responsible department level managers to perform an independent technical review of activities potentially affecting nuclear safety.

1.3 Cross Disciplinary Review (CDR)

The need for a CDR is determined by the IQR.

CDR is a technical review by disciplines other than those responsible for the document reparation.

The CDR is responsible for only the technical aspects of the areas specified by the IQR and any portions of the document that support or justify those areas.

Persons performing CDR do not have to be IQR qualified.

1.4 Plant Operations Review Committee (PORC) Review The PORC reviews and recommends final approval of the ODCM.

1.5 Approval Authority The Plant Manager will approve all revisions to the ODCM as required by Technical Specifications.

Signature authority shall not be delegated to a lower level manager.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 200 of 205 APPENDIX C - WBN ODCM REVISION PROCESS (Page 2 of 7) 2.0 Processing ODCM Revisions 2.1 Requestor (If other than the Sponsor)

Identify the need for an ODCM improvement.

Prepare a justification for the ODCM revision.

Attach a marked-up copy of the existing ODCM.

Forward the requested ODCM revision to the sponsoring organization.

2.2 ODCM Sponsor Evaluate requested changes and determine if necessary.

If the requested change is not necessary, return the request to the requestor with explanation why the change is not needed.

Incorporate all changes in a draft revision in ECM.

Identify the organizations to perform AOR and complete the top portion of Attachment A for each organization.

Distribute Attachment A to each Affected Organization and request completion of the review prior to expected PORC review date.

Obtain appropriate reviews of the ODCM revision in ECM.

2.3 Reviews 2.3.1 IQR Review the ODCM using all questions on Attachment B as a guideline and forward comments to the Sponsor.

Identify discipline or organization to perform CDR, if needed.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 201 of 205 APPENDIX C - WBN ODCM REVISION PROCESS (Page 3 of 7) 2.3.2 Affected Organization Reviewer Review the proposed changes and provide comments to the ODCM Sponsor.

Review the ODCM for impact on assigned organization, identify procedures/documents which require revision to implement the ODCM revision on the Attachment A, and return the Attachment A to the ODCM Sponsor.

2.4 Sponsor Resolve comments and obtain reviewers concurrence in ECM. Escalate any unresolved comments to appropriate management.

Ensure ODCM has been reviewed by sponsor and IQR in accordance with Attachment B.

Ensure all Affected Organizations have reviewed the ODCM change and have identified the affected procedures on Attachment A.

Ensure all IQR, and CDR review requirements have been met.

Assign an Effective Date typically 60 calendar days forward UNLESS there is reasonable justification for making it effective earlier, such as plant operating conditions, test schedules, commitment or corrective action deadlines, or implementation of upper-tier requirements, or lack of affected procedures identified on Attachment A.

2.5 PORC Review changes and Attachment B. Document recommendation for approval in ECM.

2.6 Plant Manager Approve the ODCM revision in ECM.

3.7 ODCM Sponsor Record the ODCM approval date and implementation date on each completed Attachment A provided by the affected organizations.

Return the Attachment A to each affected organization.

3.8 Affected Organization Revise procedures identified on the Attachment A and assign an effective date which matches that of the ODCM revision.

Complete the Attachment A and return to the ODCM Sponsor.

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WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 202 of 205 APPENDIX C - WBN ODCM REVISION PROCESS (Page 4 of 7) 3.9 ODCM Sponsor Ensure all Affected Organizations have completed and returned Attachment A prior to the effective date of the ODCM.

Forward the approved ODCM change to Management Services at least three working days before the implementation date.

The completed Attachments A and B are QA records, and are handled in accordance with the Document Control and Records Management Program.

Forward a completed copy of each revision to Licensing to be filed and forwarded to the NRC in the Annual Radiological Effluent Release Report.

3.10 Management Services Issue the ODCM and implementing procedures on the effective date of the ODCM revision.

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Attachment A ODCM Affected Organization Review/Implementation Proposed ODCM Revision No. __________

Expected PORC Review Date: _______________

Expected Effective Date: _______________

Affected Organization: [ ] Operations [ ] RADCON

[ ] Chemistry [ ] Maintenance

[ ] Technical Support [ ] Scheduling

[ ] Engineering [ ] Licensing

[ ] Other _______________________

The following procedures/documents will require revision to implement this ODCM change:

PROCEDURE/DOCUMENT PROCEDURE/DOCUMENT ODCM Approval Date: _______________

ODCM Effective Date: _______________

The required procedure/document revisions to support this ODCM revision have been completed and have an implementation date which matches that given above for the ODCM revision.

_________________________/__________

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Attachment B ODCM Review Checklist All questions of this checklist are considered by the ODCM preparer and reviewed by the Independent Qualified Reviewer (IQR). Only the revised portion of the ODCM should be evaluated.

Changes to Section(s) 1.0-5.0 YES NO N/A

1. Does the revision meet the intent of the guidance provided in NUREG-1301 for radiological effluent and environmental monitoring controls/surveillance requirements?

2. Do definitions in Section 3.0 match those provided in the WBN TS, NUREG-1301, or other NRC guidance?

3. Do Administrative Controls in Section 5.0 match those provided in WBN TS, NUREG-1301, or other NRC guidance?

4. Does the ODCM fulfill the requirements of TVA, Federal or State Laws, WBN FSAR, and any other referenced requirements documents?

5. Does the numbering of the Control and its accompanying Surveillance Requirement correspond?

6. Are instrument/equipment numbers and units of measure an exact match with those on the equipment?

7. Does nomenclature accurately describe the equipment and correspond to label identifiers?

8. Are referenced documents applicable, valid, and listed in the reference section?

9. Does this change maintain the level of radioactive effluent control required by 10 CFR Part 20.1302, 40 CFR Part 190, 10 CFR Part 50.36a, and Appendix I to 10 CFR Part 50? Provide justification for answer:

___________________/_______

Preparer Date

__________________/_______

IQR Date WBL-23-19 E2-206 of 207

WBN TWO-UNIT OFFSITE DOSE CALCULATION Revision 6 0 MANUAL (ODCM) Page 205 of 205 APPENDIX C - WBN ODCM REVISION PROCESS (Page 7 of 7)

Attachment B ODCM Review Checklist (continued)

Changes to Section(s) 6.0-11.0 YES NO N/A

10. Are there methodologies given in Sections 6.0 through 9.0 which implement the applicable ODCM Controls?

11. Are references to ODCM Controls and Surveillance Requirements accurate and correct?

12. Are changes to setpoint calculation methodologies consistent with the guidance provided in NUREG-0133?

13. Are changes to liquid effluent concentration compliance methodologies consistent with the guidance provided in NUREG-0133 and 10 CFR Part 20?

14. Are changes to gaseous effluent dose rate calculation/compliance methodologies consistent with the guidance provided in NUREG-0133 and/or Regulatory Guide 1.109?

15. Are changes to dose or dose projection calculation/compliance methodologies consistent with the guidance provided in NUREG-0133 and/or Regulatory Guide 1.109?

16. Are instrument/equipment numbers and units of measure an exact match with those on the equipment?

17. Are referenced documents applicable, valid, and listed in the references?

18. Are ODCM Sections numbered consistently and consecutively?

19. Are references to other ODCM Sections correct?

20. Are references to ODCM Tables and Figures accurate and correct?

21. Are any new acronyms defined in Appendix A?

22. Are equations numbered consecutively?

23. Does dimensional analysis yield the correct units for equations?

24. Are terms used in equations defined after the equation (and in Appendix A) and the proper units given for that term?

25. Do units on equation terms which reference tables match the units used for that term in the Table?

26. Are references given for table and other values correct and accurate?

27. Do data values given match those in the reference?

28. Do text descriptions of release/discharge points in Sections 6.0 and 7.0 correspond with the Figures referenced in those sections?

29. Will change affect the NOUE and ALERT calculation values in WBNTSR115?

30. The change does not adversely impact the accuracy or reliability of effluent, dose, or setpoint calculations? Provide justification for answer:

____________________/_______

Preparer Date

____________________/_______

IQR Date WBL-23-19 E2-207 of 207

WBL-23-019, Annual Radioactive Effluent Release Report

Contents

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1.0 INTRODUCTION

10.0 REFERENCES

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WBL-23-019, Annual Radioactive Effluent Release Report

Text

Subject:

1.0 INTRODUCTION

10.0 REFERENCES

1.0 INTRODUCTION

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10.0 REFERENCES

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