W3F1-2021-0037, Submittal of 2020 Annual Radioactive Effluent Release Report

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Submittal of 2020 Annual Radioactive Effluent Release Report
ML21119A376
Person / Time
Site: Waterford Entergy icon.png
Issue date: 04/29/2021
From: Wood P
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
W3F1-2021-0037
Download: ML21119A376 (37)
v • d • e


Text

Entergy Operations, Inc.

17265 River Road Killona, LA 70057-3093 Tel 504 464 3786 Paul Wood Manager - Regulatory Assurance Waterford 3 W3F1-2021-0037 April 29, 2021 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

Annual Radioactive Effluent Release Report - 2020 Waterford Steam Electric Station, Unit 3 (Waterford 3)

Docket No. 50-382 Renewed Facility Operating License No. NPF-38 Attached is the Annual Radioactive Effluent Release Report for the period of January 1 through December 31, 2020. This report is submitted pursuant to the Requirements of Waterford 3 Technical Specification Sections 6.9.1.8 and 6.14.2.c.

This report contains no new commitments. Please contact Paul Wood, Regulatory Assurance Manager, at (504) 464-3786 if you have questions regarding this information.

Respectfully, Paul Wood j Digitally signed by Paul Wood Date: 2021.04.29 19:32:07 -05'00' PW/llb

Attachment:

Annual Radioactive Effluent Release Report - 2020 cc: NRC Region IV Regional Administrator NRC Senior Resident Inspector - Waterford Steam Electric Station Unit NRC Project Manager Entergy Legal, General Sr Councel

Attachment to W3F1-2021-0037 Annual Radioactive Effluent Release Report (35 pages)

2020 Annual Radioactive Effluent Release Report Waterford 3 Document Number: 50-382 Author:

- - - - -Mich -- -------- Date: L-f/Io//2- f e 11 e Beavers Effluent Specialist

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Thomas House Chemistry Supervisor Reviewer:

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Paul Moritzky

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I Radiation Protection Supervisor

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/ ~ Roger Tolbert ChemStaff Senior Consultant Approved ,d~ I I~.-;) .-_

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Page 1 of 34 Plant: Waterford 3 YEAR: 2020 Document Number: 50-382 Annual Radioactive Effluent Release Report

Waterford 3 Year: 2020 Page 2 of 34 Annual Radioactive Effluent Release Report TABLE OF CONTENTS

1.0 INTRODUCTION

.......................................................................................................................... 3 2.0 SUPPLEMENTAL INFORMATION ............................................................................................... 4 3.0 GASEOUS EFFLUENTS ............................................................................................................ 13 4.0 LIQUID EFFLUENTS .................................................................................................................. 15 5.0 SOLID WASTE

SUMMARY

........................................................................................................ 18 6.0 RADIOLOGICAL IMPACT TO MAN ........................................................................................... 21 7.0 METEOROLOGICAL DATA........................................................................................................ 24 ATTACHMENTS - Revised Offsite Dose Calculation Manual ...................................................................... 32 - Revised Process Control Program ................................................................................. 33 - Errata/Corrections to Previous ARERRs ........................................................................ 34

Waterford 3 Year: 2020 Page 3 of 34 Annual Radioactive Effluent Release Report

1.0 INTRODUCTION

Waterford 3 is a single unit Combustion Engineering nuclear steam supply plant. Both liquid and gaseous effluents are released in accordance with the Offsite Dose Calculation Manual (ODCM). The Annual Radioactive Effluent Release Report is submitted as required by Waterford 3 Technical Specification 6.9.1.8. It covers the period from January 1, 2020 through December 31, 2020, where the plant had an average power level of 86.67%.

Information in this report is presented in the format outlined in Appendix B of Regulatory Guide 1.21 and in Section 5.8.1 of the Offsite Dose Calculation Manual (UNT-005-014).

The information contained in this report includes:

  • A summary of the quantities of radioactive liquid and gaseous effluents and solid wastes released from the plant during the reporting period.
  • A summary of the meteorological data collected during 2020.
  • Assessment of radiation doses due to liquid and gaseous radioactive effluents released during 2020.
  • A discussion of Unplanned/Abnormal releases that occurred during the reporting period.
  • A discussion of why required radioactive effluent monitoring instrumentation was not returned to service within the time specified.
  • A discussion of any instances in which effluent samples were not collected within the required frequency. (not applicable for 2020)

Waterford 3 Year: 2020 Page 4 of 34 Annual Radioactive Effluent Release Report 2.0 SUPPLEMENTAL INFORMATION 2.1 Regulatory Limits The ODCM (by reference) and the Technical Requirements Manual (TRM) (directly) contain the limits to which Waterford 3 must adhere. Because of the "as low as reasonably achievable" (ALARA) philosophy at Waterford 3, actions are taken to reduce the amount of radiation released to the environment. Liquid and gaseous release data show that the dose from Waterford 3 is considerably below the ODCM/TRM limits. This data reveals that the radioactive effluents have an overall minimal dose contribution to the surrounding environment. The following are the limits required by the ODCM:

1. Fission and activation gases:
a. Noble gases dose rate due to radioactive materials released in gaseous effluents from the areas at and beyond the site boundary shall be limited to the following:
  • Less than or equal to 500 mrem/year to the total body
  • Less than or equal to 3000 mrem/year to the skin
b. Noble gas air dose due to noble gases released in gaseous effluents to areas at and beyond the site boundary shall be limited to the following:
1) Quarterly
  • Less than or equal to 5 mrads gamma
  • Less than or equal to 10 mrads beta
2) Yearly
  • Less than or equal to 10 mrads gamma
  • Less than or equal to 20 mrads beta
2. Iodine, tritium, and all radionuclides in particulate form with half-lives greater than 8 days:
a. The dose rate for Iodine-131, Iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released to areas at and beyond the site boundary shall be limited to the following:
  • Less than or equal to 1500 mrem/yr to any organ
b. The dose to a MEMBER OF THE PUBLIC from Iodine-131, Iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released to areas at and beyond the site boundary shall be limited to the following:
1) Quarterly
  • Less than or equal to 7.5 mrem to any organ
2) Yearly
  • Less than or equal to 15 mrem to any organ

Waterford 3 Year: 2020 Page 5 of 34 Annual Radioactive Effluent Release Report

3. Liquid Effluents Dose
a. The dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluents released to unrestricted areas shall be limited to the following:
1) Quarterly
  • Less than or equal to 1.5 mrem total body
  • Less than or equal to 5 mrem any organ
2) Yearly
  • Less than or equal to 3 mrem total body
  • Less than or equal to 10 mrem any organ
4. Total Dose (40CFR190)
a. The annual dose or dose commitment to any MEMBER OF THE PUBLIC due to releases of radioactivity and to radiation from uranium fuel cycle sources shall be limited to the following:
  • Less than or equal to 25 mrem, total body or any organ except thyroid.
  • Less than or equal to 75 mrem, thyroid 2.2 Maximum Permissible Concentrations
1. Fission & Activation Gases, Iodines, and Particulates with Half Lives > Eight (8) Days For gaseous effluents, maximum permissible concentrations are not directly used in release rate calculations since the applicable limits are expressed in terms of dose rate at the site boundary.
2. Liquid Effluents The concentration of radioactive material released from the site to unrestricted areas shall be limited to ten times the concentration specified in 10 CFR 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases.

For dissolved or entrained noble gases, the total concentration released shall be limited to 2.0E-4 microcuries/ml.

2.3 Average Energy

1. This is not applicable to Waterford 3 effluent specifications. The average energy (E-Bar) is not required to be calculated from effluent release data. E-Bar for the Reactor Coolant System (RCS) is supplied as additional information in the report further below.

Waterford 3 Year: 2020 Page 6 of 34 Annual Radioactive Effluent Release Report 2.4 Measurements & Approximations of Total Radioactivity

1. The quantification of radioactivity in liquid and gaseous effluents was accomplished by performing the sampling and radiological analysis of effluents in accordance with the requirements of Tables 4.11-1 and 4.11-2 of the Technical Requirements Manual (TRM).
a. Fission & activation gases For continuous releases, a gas grab sample was analyzed at least monthly for noble gases using gamma spectroscopy. Each week a Gas Ratio (GR) was calculated according to the following equation:

Average Weekly Noble Gas Monitor Reading GR =

Monitor Reading During Noble Gas Sampling The monthly sample analysis and weekly Gas Ratio were then used to determine noble gases discharged continuously for the previous week. For gas decay tank and containment purge batch releases, a gas grab sample was analyzed prior to release to determine noble gas concentrations in the batch. In all cases, the total radioactivity in gaseous effluents was determined from measured concentrations of each radionuclide present and the total volume discharged.

b. Iodines and Particulates Iodines and particulates discharged were sampled using a continuous sampler which contained a charcoal cartridge and a particulate filter. Each week the charcoal cartridge and particulate filter were analyzed for gamma emitters using gamma spectroscopy. The determined radionuclide concentrations and effluent volumes discharged were used to calculate the previous week's activity released.

The particulate samples were composited and analyzed quarterly for Sr-89 and Sr-90 by a contract laboratory (Teledyne Brown Engineering). Particulate gross alpha activity was measured weekly using gas-flow proportional counting techniques. The determined activities were used to estimate effluent concentrations in subsequent releases until the next scheduled analysis was performed.

c. Tritium Tritium is collected by passing a known volume of the sample stream through a bubbler. The collected samples are analyzed by liquid scintillation. Grab samples of continuous releases were analyzed at least monthly, and containment purge batch releases are analyzed prior to release. The determined concentrations were used to estimate tritium activity in subsequent releases until the next scheduled analysis was performed.
d. Carbon-14 Carbon-14 release rates were estimated using the annual Carbon-14 production rate obtained from the Waterford 3 Final Safety Analysis Report (FSAR), a gaseous release fraction of 98%, a Carbon-14 carbon dioxide fraction of 30%,

and 316.88 (87.1%) days equivalent full power operation. Release of Carbon-14 was assumed to be continuous.

Waterford 3 Year: 2020 Page 7 of 34 Annual Radioactive Effluent Release Report

e. Liquid Effluents For continuous releases, samples were collected weekly and analyzed using gamma spectroscopy. The measured concentrations were used to determine radionuclide concentrations in the following weeks releases. For batch releases, gamma analysis was performed on the sample prior to release.

For both continuous and batch releases, composite samples were analyzed quarterly by a contract laboratory (Teledyne Brown Engineering) for Sr-89, Sr-90, and Fe-55. Samples were composited and analyzed monthly for tritium and gross alpha using liquid scintillation and gas flow proportional counting techniques, respectively. For radionuclides measured in the composite samples, the measured concentrations in the composite samples from the previous month or quarter were used to estimate released quantities of these isotopes in liquid effluents during the current month or quarter when the analysis results became available.

The total radioactivity in liquid effluent releases was determined from the measured and estimated concentrations of each radionuclide present and the total volume of the effluent discharged.

f. Estimated Total Error Present Estimates of measurement and analytical error for gaseous and liquid effluents are calculated (bound by a conservative estimate of 25%) as follows:

= [(1 )2 + (2 )2 + ( )2 ]

Where: ET = total percent error E1 ... En = percent error due to calibration standards, Laboratory analysis, instruments, sample flow, etc.

Waterford 3 Year: 2020 Page 8 of 34 Annual Radioactive Effluent Release Report 2.5 Batch Releases:

2.5.1 Liquid

1. Number of batch releases: 85
2. Total time period for all batch releases: 24510 min
3. Maximum time period for a batch release: 365 min
4. Average time period for a batch release: 288.4 min
5. Minimum time period for a batch release: 160 min
6. Average stream flow during periods of effluent release into flowing streams:

759534.6 f3/s 2.5.2 Gaseous

1. Number of batch releases: 7
2. Total time period for all batch releases: 2724 min
3. Maximum time period for a batch release: 1120 min
4. Average time period for a batch release: 389.1 min
5. Minimum time period for a batch release: 5 min 2.6 Abnormal Releases 2.6.1 There were no abnormal releases during the reporting period.

2.6.2 Liquid

1. Number of releases: 0
2. Total Activity (Ci) released: N/A 2.6.3 Gaseous
1. Number of releases: 0
2. Total Activity (Ci) released: N/A 2.7 Non-routine, Planned Discharges
1. There were no non-routine, planned discharges for the reporting period.

2.8 Radioactive Waste Treatment System Changes

1. During the reporting period, no major changes were made to any Radioactive Waste Systems. All major changes to Radioactive Waste Systems are included in Waterford 3s FSAR updates.

Waterford 3 Year: 2020 Page 9 of 34 Annual Radioactive Effluent Release Report 2.9 Land Use Census Changes A land use census performed in 2020 did not identify the need for any changes to locations being used for effluent dose calculations or radiological environmental sampling. Milk sampling is no longer available for the REMP program due to owner getting rid of milking cows. The ODCM is in process of being revised. The milk control sample will be collected until the ODCM is revised. With broad leaf sampling in place in accordance with TRM 3/4.12.1 Table 3.12-1 Radiological Environmental Monitoring Program, Waterford 3 meets TRM requirements, having three broad leaf sampling sites in the place of milk samples if milk samples became unavailable.

2.10 Effluent Monitor Instrument Inoperability Technical Requirements Manual (TRM) Specifications 3.3.3.10 and 3.3.3.11 require reporting in the Annual Radioactive Effluent Release Report of why designated inoperable effluent monitoring instrumentation was not restored to operability within the time specified in the Action Statement. Waterford 3 did not have any effluent radiation monitors inoperable greater than the time specified in the action statement of the TRM.

Gaseous Waste System (GWM) Radiation Monitor (PRMIRE0648)

Time Required by Specifications to Restore Operability: 30 Days if release is occuring Period of Inoperability: 7/26/2019 to 6/1/2020 (311 days)

Batch releases performed with monitor out of services: None.

Cause of Inoperability: On 7/26/2019, the radiation monitor exhibited an Operate Failure locked in due to flow issues. The lack of flow through the Moisture Control Unit caused the GWM Rad monitor pump to trip on low flow during an attempted release. No releases have occurred during this period of inoperability; therefore, there was no TRM entry during the time in inoperability.

2.11 Offsite Dose Calculation Manual Changes

1. There were no changes to the Offsite Dose Calculation Manual, UNT-005-014, in 2020.

2.12 Process Control Program (PCP) Changes

1. There were no changes to the Process Control Program, EN-RW-105, in 2020.

2.13 NON-REMP Groundwater Monitoring Results (NEI 07-07)

1. Groundwater wells were monitored at Waterford 3 during 2020 as part of the NEI Groundwater Protection Initiative; these samples are not part of the Radiological Environmental Monitoring Program. Sampling of the ten installed wells was conducted on a quarterly basis. All results were less than minimum detectable activity for gamma emitters and tritium during 2020.

A summary of all groundwater monitoring well sample results for 2020 is presented below:

Waterford 3 Year: 2020 Page 10 of 34 Annual Radioactive Effluent Release Report Groundwater Well Results (pCi/l)

Sample Date Time well Tritium Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 I-131 Cs-134 Cs-137 Ba-140 La-140 3/6/2020 7:52 MW-3 < 484.00 < 6.49 < 6.36 < 15.00 < 5.94 < 14.30 < 7.50 < 12.70 < 10.60 < 6.49 < 7.68 < 36.90 < 11.40 5/28/2020 16:46 MW-3 < 509.00 < 7.50 < 8.93 < 14.90 < 9.06 < 13.70 < 8.41 < 14.60 < 14.50 < 7.97 < 7.62 < 36.50 < 13.60

+

9/9/2020 9:35 MW-3 < 480.00 < 6.61 < 6.00 < 15.40 < 7.12 < 15.00 < 7.04 < 12.30 < 9.64 < 5.93 < 6.64 < 26.60 < 10.30 11/18/2020 8:10 MW-3 < 539.00 < 6.80 < 7.64 < 17.60 < 9.48 < 13.70 < 7.94 < 12.40 < 8.65 < 8.42 < 6.30 < 31.00 < 12.10

+

3/6/2020 8:35 MW-4 < 488.00 < 5.62 < 7.03 < 15.80 < 7.65 < 18.80 < 7.16 < 12.80 < 12.50 < 6.82 < 7.02 < 38.10 < 9.39

+

5/28/2020 15:45 MW-4 < 485.00 < 5.81 < 6.18 < 11.00 < 7.04 < 6.92 < 5.49 < 10.80 < 9.79 < 6.47 < 6.63 < 28.50 < 10.60 9/9/2020 10:25 MW-4 < 475.00 < 5.86 < 7.12 < 14.40 < 6.92 < 14.70 < 6.65 < 11.00 < 9.19 < 6.71 < 8.32 < 28.90 < 10.10 11/18/2020 9:05 MW-4 < 538.00 < 7.24 < 7.38 < 16.10 < 7.27 < 5.65 < 5.90 < 8.03 < 9.10 < 7.93 < 7.72 < 34.60 < 11.70 11/18/2020 9:40 MW-4 DUP < 549.00 < 6.37 < 4.50 < 9.96 < 4.25 < 13.40 < 5.05 < 10.40 < 9.37 < 6.34 < 5.42 < 22.10 < 7.62 3/6/2020 10:05 MW-5 < 479.00 < 6.64 < 7.35 < 17.20 < 7.20 < 18.80 < 7.64 < 14.40 < 12.80 < 6.43 < 8.68 < 40.90 < 14.10 5/28/2020 10:45 MW-5 < 493.00 < 4.93 < 5.72 < 12.40 < 7.86 < 13.40 < 7.61 < 12.20 < 11.30 < 8.09 < 6.26 < 29.30 < 12.80 9/9/2020 11:25+MW-5 < 470.00 < 8.04 < 4.42 < 8.08 < 7.97 < 12.30 < 7.47 < 11.10 < 11.10 < 8.30 < 7.65 < 34.30 < 7.69 9/9/2020 12:05 MW-5 DUP < 488.00 < 3.17 < 6.98 < 11.50 < 6.64 < 11.60 < 6.94 < 9.26 < 8.91 < 5.54 < 7.05 < 32.90 < 9.24

+

11/18/2020 10:45 MW-5 < 531.00 < 6.45 < 5.71 < 13.10 < 6.49 < 13.70 < 8.49 < 10.90 < 10.10 < 8.18 < 7.19 < 27.30 < 9.37 3/5/2020 16:00 MW-6 < 492.00 < 7.25 < 6.87 < 18.50 < 5.38 < 16.30 < 9.52 < 12.90 < 12.90 < 8.69 < 8.99 < 38.20 < 5.97 5/28/2020 8:45 MW-6 < 481.00 < 5.44 < 4.48 < 11.00 < 4.75 < 10.80 < 5.80 < 9.06 < 7.35 < 5.98 < 5.83 < 26.50 < 8.74 5/28/2020 9:25 MW-6 DUP < 475.00 < 4.88 < 4.57 < 9.82 < 4.73 < 9.56 < 4.31 < 7.37 < 8.07 < 5.28 < 4.50 < 21.00 < 6.91 9/9/2020 13:05 MW-6 < 484.00 < 7.32 < 7.00 < 13.70 < 6.78 < 11.50 < 6.43 < 12.80 < 11.50 < 7.99 < 6.90 < 32.90 < 9.13 11/18/2020 11:50 MW-6 < 543.00 < 6.09 < 5.44 < 12.40 < 6.16 < 12.10 < 7.23 < 10.70 < 9.28 < 5.16 < 6.63 < 24.10 < 8.40

+

3/5/2020 15:12 MW-7 < 495.00 < 5.88 < 6.47 < 15.10 < 6.33 < 12.90 < 7.20 < 10.60 < 11.70 < 6.49 < 6.22 < 33.70 < 9.36

+

5/27/2020 7:40 MW-7 < 493.00 < 5.87 < 5.38 < 11.80 < 5.54 < 13.50 < 5.78 < 9.96 < 9.45 < 6.34 < 5.86 < 26.00 < 9.50 9/9/2020 8:25 MW-7 < 481.00 < 5.37 < 4.56 < 11.00 < 5.93 < 9.42 < 4.92 < 10.40 < 10.00 < 4.74 < 4.93 < 28.00 < 9.94 11/18/2020 13:10 MW-7 < 537.00 < 6.36 < 6.59 < 15.40 < 5.99 < 14.20 < 6.65 < 10.50 < 10.30 < 7.04 < 6.19 < 29.20 < 10.20 3/5/2020 14:00 MW-8 < 493.00 < 4.37 < 7.23 < 17.10 < 5.93 < 16.30 < 7.73 < 12.00 < 10.90 < 8.91 < 6.88 < 30.70 < 12.40 5/27/2020 18:05 MW-8 < 485.00 < 4.34 < 4.80 < 10.40 < 6.39 < 8.67 < 5.95 < 8.08 < 8.84 < 5.98 < 5.59 < 22.40 < 8.96 9/9/2020 14:25 MW-8 < 482.00 < 6.40 < 6.47 < 12.10 < 5.74 < 13.80 < 6.74 < 9.23 < 10.00 < 7.23 < 6.04 < 25.00 < 10.60 11/18/2020 14:15 MW-8 < 547.00 < 4.78 < 6.68 < 12.80 < 5.49 < 8.28 < 6.10 < 9.77 < 7.03 < 7.44 < 5.68 < 23.20 < 8.50

+

+

3/5/2020 13:10 MW-9 < 487.00 < 5.41 < 5.90 < 12.90 < 5.43 < 13.60 < 5.65 < 10.60 < 8.65 < 6.08 < 6.75 < 30.80 < 14.40 3/5/2020 13:20 MW-9 DUP < 489.00 < 6.85 < 6.18 < 12.50 < 11.10 < 13.40 < 6.09 < 10.70 < 13.80 < 7.82 < 8.01 < 29.50 < 10.40 5/27/2020 17:14 MW-9 < 501.00 < 4.17 < 4.08 < 7.76 < 4.68 < 9.59 < 4.60 < 7.42 < 7.46 < 5.11 < 4.37 < 22.60 < 5.46 9/9/2020 15:50 MW-9 < 468.00 < 7.72 < 7.11 < 13.60 < 7.67 < 14.80 < 7.26 < 10.40 < 9.48 < 7.23 < 5.86 < 26.30 < 8.53 11/18/2020 15:00 MW-9 < 549.00 < 6.13 < 8.54 < 12.40 < 6.79 < 14.40 < 6.49 < 11.40 < 9.43 < 8.04 < 7.31 < 32.90 < 7.27 3/5/2020 18:05 MW-10 < 490.00 < 9.12 < 6.75 < 15.90 < 6.53 < 11.90 < 7.55 < 11.40 < 13.00 < 7.22 < 6.99 < 32.20 < 9.86 5/28/2020 14:55 MW-10 < 483.00 < 6.65 < 7.62 < 14.20 < 7.70 < 11.20 < 6.94 < 12.00 < 12.40 < 8.30 < 5.07 < 34.00 < 8.84 9/8/2020 14:10 MW-10 < 462.00 < 7.53 < 6.71 < 13.70 < 7.26 < 8.76 < 6.59 < 12.00 < 11.60 < 7.82 < 7.48 < 29.50 < 7.50 11/17/2020 16:35 MW-10 < 536.00 < 6.50 < 5.64 < 12.60 < 8.37 < 10.90 < 6.04 < 11.10 < 12.00 < 5.96 < 6.50 < 26.50 < 13.80

Waterford 3 Year: 2020 Page 11 of 34 Annual Radioactive Effluent Release Report Groundwater Well Results (pCi/l)

Sample Date Time well Tritium Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 I-131 Cs-134 Cs-137 Ba-140 La-140 3/5/2020 17:10+MW-11 < 499 < 6.11 < 7.39 < 15.50 < 5.30 < 10.00 < 7.48 < 9.56 < 10.10 < 8.30 < 5.83 < 24.10 < 14.70 5/28/2020 13:25 MW-11 < 493 < 5.43 < 5.16 < 13.20 < 5.24 < 11.30 < 6.43 < 8.84 < 10.80 < 6.28 < 5.53 < 22.70 < 10.10

+

9/8/2020 17:40 MW-11 < 459 < 5.82 < 6.83 < 12.10 < 6.81 < 13.40 < 7.18 < 12.20 < 8.05 < 7.22 < 4.47 < 22.60 < 7.29 11/17/2020 15:00 MW-11 < 551 < 7.44 < 6.78 < 13.10 < 5.04 < 15.30 < 6.59 < 12.90 < 9.78 < 7.07 < 6.91 < 22.40 < 11.40 3/5/2020 11:30 MW-12 < 476.00 < 6.81 < 7.92 < 15.50 < 3.90 < 13.90 < 8.21 < 12.50 < 12.80 < 7.77 < 8.57 < 38.30 < 8.88 5/27/2020 15:30 MW-12 < 502.00 < 4.19 < 5.07 < 9.41 < 4.08 < 10.50 < 5.22 < 7.88 < 8.41 < 4.74 < 4.44 < 21.60 < 7.04 9/8/2020 13:15 MW-12 < 456.00 < 6.47 < 5.62 < 13.20 < 6.90 < 16.80 < 7.42 < 11.60 < 11.00 < 7.87 < 7.01 < 35.70 < 8.44 11/17/2020 13:25 MW-12 < 543.00 < 6.99 < 7.19 < 12.30 < 6.18 < 13.30 < 7.08 < 11.30 < 10.00 < 6.29 < 7.84 < 31.90 < 8.02 2.14 Unprotected Outside Storage Tank Radioactivity Limit

1. Technical Specification 3/4.11.2.6 specifies that the quantity of radioactivity contained in each unprotected outdoor storage tank be maintained less than or equal to 7.85E-04 Curies (excluding tritium and dissolved and entrained noble gases). At no time during the reporting period was this value exceeded.

2.15 Gaseous Storage Tank Total Radioactivity Limit

1. Technical Specification 3/4.11.2.6 specifies that the quantity of radioactivity contained in each gas storage tank be maintained less than or equal to 8.5E+04 Curies noble gas (considered as Xe-133 equivalent). At no time during the reporting period was this value exceeded.

2.16 Errata/Corrections to Previous ARERRs

1. The 2019 ARERR had an error on page 13. In Section 2.17.4, Reactor Coolant System Average Energy (E-Bar), read Reactor Coolant System E-Bar calculations were performed on 7/14/2019 and 12/15/2019. These dates are incorrect. The correct dates are 7/4/2019 and 12/15/2019. The affected page in its entirety is in Attachment 3 of this report.

2.17 Other Information

1. Unavailability of REMP Milk Samples Due to the unavailability of three milk sampling locations within five kilometers of the plant, Broad Leaf sampling is performed in accordance with Technical Requirements Manual (TRM) Table 3.12-1. Milk is collected, when available, from the control location and one identified sampling location as indicated in UNT-005-014, Offsite Dose Calculation Manual, Attachment 7.13.
2. Activity Released Via Secondary Pathways The following secondary release paths were continuously monitored for radioactivity:
  • The Hot Machine Shop Exhaust (AH-35)
  • Decontamination Shop Exhaust (AH-34)
  • The RAB H&V Equipment Room Ventilation System Exhaust (E-41A and E-41B)
  • The Switchgear/Cable Vault Area Ventilation System (AH-25)

Waterford 3 Year: 2020 Page 12 of 34 Annual Radioactive Effluent Release Report Continuous sampling for these areas is maintained to demonstrate the operability of installed treatment systems and to verify integrity of barriers separating primary and secondary ventilation systems. Sampling for these areas was limited to continuous particulate and iodine sampling and monthly noble gas grab sampling. The activity released via these secondary pathways resulted from routine operations and remained below significant levels.

3. Missed Effluent Samples No effluent samples were missed in 2020.
4. Reactor Coolant System Average Energy (E-Bar)

Reactor Coolant System E-Bar calculations were performed on 4/10/2020 and 8/27/2020 with values of 0.0140 and 0.0962 Mev/disintegration, respectively. Reactor Coolant System E-Bar is supplied for information only and is not used for effluent dose calculations.

Waterford 3 Year: 2020 Page 13 of 34 Annual Radioactive Effluent Release Report 3.0 GASEOUS EFFLUENTS 3.1 Gas Effluent and Waste Disposal Report Table 1, Gaseous Effluents-Summation of All Releases - Waterford 3 A. Fission & Activation Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Est. Total Error %

1. Total Release Ci 0.00E+00 0.00E+00 2.87E-01 1.63E-01 2.50E+01
2. Average release rate for the period µCi/sec 0.00E+00 0.00E+00 3.61E-02 2.05E-02 B. Iodine
1. Total Iodine - 131 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.50E+01 I
2. Average release rate for the period µCi/sec 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C. Particulates
1. Particulates with half-lives > 8 days Ci 0.00E+00 0.00E+00 3.05E-07 8.13E-06 2.50E+01 I
2. Average release rate for the period µCi/sec 0.00E+00 0.00E+00 3.84E-08 1.02E-06 D. Tritium
1. Total Release Ci 1.24E+01 1.17E+01 9.04E+00 1.71E+01 2.50E+01 I
2. Average release rate for the period µCi/sec 1.58E+00 1.48E+00 1.14E+00 2.15E+00 E. Carbon-14
1. Total Release Ci 2.88E+00 2.87E+00 2.63E+00 1.75E+00
2. Average release rate for the period µCi/sec 3.66E-01 3.65E-01 3.31E-01 2.21E-01

% of limit is on the Radiological Impact on Man Table

Waterford 3 Year: 2020 Page 14 of 34 Annual Radioactive Effluent Release Report Table 2, Gaseous Effluents - Ground Level Release - Batch Mode - Waterford 3 Radionuclide Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Released Fission Gases Ar-41 Ci 0.00E+00 0.00E+00 2.76E-01 0.00E+00 2.76E-01 Xe-133 Ci 0.00E+00 0.00E+00 1.09E-02 1.57E-01 1.68E-01 Xe-133m Ci 0.00E+00 0.00E+00 0.00E+00 4.31E-03 4.31E-03 Xe-135 Ci 0.00E+00 0.00E+00 0.00E+00 2.31E-03 2.31E-03 Total for Period Ci 0.00E+00 0.00E+00 2.87E-01 1.63E-01 4.50E-01 lodines Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Particulates Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Tritium H-3 Ci 0.00E+00 0.00E+00 8.42E-01 0.00E+00 8.42E-01 Gross Alpha Alpha Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 3, Gaseous Effluents - Ground Level Release - Continuous Mode - Waterford 3 Radionuclide Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Released Fission Gases Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 lodines Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Particulates Co-58 Ci 0.00E+00 0.00E+00 0.00E+00 3.97E-07 3.97E-07 Co-60 Ci 0.00E+00 0.00E+00 0.00E+00 2.66E-06 2.66E-06 Cr-51 Ci 0.00E+00 0.00E+00 0.00E+00 1.54E-06 1.54E-06 Cs-137 Ci 0.00E+00 0.00E+00 3.05E-07 0.00E+00 3.05E-07 Nb-95 Ci 0.00E+00 0.00E+00 0.00E+00 3.01E-07 3.01E-07 Os-191 Ci 0.00E+00 0.00E+00 0.00E+00 3.23E-06 3.23E-06 Total for Period Ci 0.00E+00 0.00E+00 3.05E-07 8.13E-06 8.43E-06 Tritium H-3 Ci 1.24E+01 1.17E+01 8.20E+00 1.71E+01 4.94E+01

Waterford 3 Year: 2020 Page 15 of 34 Annual Radioactive Effluent Release Report 4.0 LIQUID EFFLUENTS 4.1 Liquid Effluent and Waste Disposal Report Table 4, Liquid Effluents-Summation of All Releases - Waterford 3 A. Fission & Activation Products Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Est. Total Error %

1. Total Release (not including tritium, gases or Ci 1.52E-03 1.62E-03 3.27E-03 1.38E-02 2.50E+01 alpha) 2 Average diluted concentration during period µCi/mL 7.35E-11 5.30E-11 6.02E-11 3.55E-10 B. Tritium
1. Total Release Ci 8.92E+01 6.49E+01 8.87E+02 4.80E+01 2.50E+01 I
2. Average diluted concentration during period. µCi/mL 4.30E-06 2.12E-06 1.63E-05 1.23E-06 C. Dissolved & Entrained Gases
1. Total Release Ci 3.00E-04 2.60E-04 4.39E-03 4.80E-06 2.50E+01 I
2. Average diluted concentration during period µCi/mL 1.45E-11 8.51E-12 8.08E-11 1.23E-13 D. Gross Alpha Activity
1. Total Release Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.50E+01 E. Volume Of Waste Released (prior to dilution) Liters 7.28E+06 8.39E+06 9.13E+06 1.50E+07 F. Volume Of Dilution Water Used During Period Liters 2.07E+10 3.05E+10 5.43E+10 3.89E+10

% of limit is on the Radiological Impact on Man Table

Waterford 3 Year: 2020 Page 16 of 34 Annual Radioactive Effluent Release Report Table 5, Batch Mode Liquid Effluents -Waterford 3 Nuclides Released Batch Mode Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ag-110m Ci 0.00E+00 0.00E+00 0.00E+00 1.59E-05 1.59E-05 Co-58 Ci 7.13E-05 2.27E-05 1.83E-05 1.74E-03 1.85E-03 Co-60 Ci 2.38E-04 2.24E-04 3.73E-04 9.30E-04 1.77E-03 Cr-51 Ci 0.00E+00 0.00E+00 0.00E+00 4.33E-03 4.33E-03 Fe-55 Ci 1.04E-03 2.77E-04 1.72E-03 5.34E-04 3.57E-03 Fe-59 Ci 0.00E+00 0.00E+00 0.00E+00 1.35E-04 1.35E-04 H-3 Ci 8.92E+01 6.48E+01 8.87E+02 4.78E+01 1.09E+03 Mn-54 Ci 1.98E-05 2.26E-05 1.54E-05 1.58E-04 2.16E-04 Na-24 Ci 0.00E+00 0.00E+00 0.00E+00 1.18E-05 1.18E-05 Nb-95 Ci 3.86E-05 0.00E+00 0.00E+00 1.02E-03 1.06E-03 Ni-56 Ci 0.00E+00 1.64E-06 0.00E+00 7.99E-06 9.63E-06 Sb-122 Ci 0.00E+00 0.00E+00 0.00E+00 4.81E-05 4.81E-05 Sb-124 Ci 0.00E+00 0.00E+00 0.00E+00 5.85E-04 5.85E-04 Sb-125 Ci 8.88E-05 5.95E-04 1.76E-04 1.42E-03 2.28E-03 Sb-126 Ci 0.00E+00 0.00E+00 0.00E+00 5.66E-05 5.66E-05 Zr-95 Ci 1.69E-05 0.00E+00 0.00E+00 5.86E-04 6.03E-04 Total for Period Ci 8.92E+01 6.48E+01 8.87E+02 4.78E+01 1.09E+03 Xe-133 Ci 2.92E-04 2.25E-04 4.30E-03 4.80E-06 4.82E-03 Xe-135 Ci 7.33E-06 3.47E-05 9.59E-05 0.00E+00 1.38E-04 Total for Period Ci 2.99E-04 2.60E-04 4.40E-03 4.80E-06 4.96E-03

Waterford 3 Year: 2020 Page 17 of 34 Annual Radioactive Effluent Release Report Table 6, Continuous Mode Liquid Effluents - Waterford 3 Nuclides Released Continuous Mode Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ag-110m Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-57 Ci 0.00E+00 5.96E-07 3.29E-06 0.00E+00 3.89E-06 Co-58 Ci 1.50E-06 3.18E-05 8.27E-05 3.43E-04 4.59E-04 Co-60 Ci 6.23E-06 3.05E-04 6.37E-04 6.18E-04 1.57E-03 Cr-51 Ci 0.00E+00 0.00E+00 0.00E+00 3.25E-05 3.25E-05 Cs-137 Ci 4.53E-06 7.83E-05 1.12E-04 1.24E-03 1.43E-03 Fe-55 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 Ci 4.31E-02 1.21E-01 5.10E-02 2.16E-01 4.31E-01 Mn-54 Ci 0.00E+00 3.56E-05 8.34E-05 9.29E-06 1.28E-04 Na-24 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Nb-95 Ci 0.00E+00 1.36E-05 3.08E-05 0.00E+00 4.44E-05 Ni-56 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Sb-122 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Sb-124 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Sb-125 Ci 7.92E-08 9.69E-06 2.19E-05 0.00E+00 3.17E-05 Sb-126 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zr-95 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 4.31E-02 1.21E-01 5.20E-02 2.18E-01 4.35E-01 Xe-133 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Xe-135 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

Waterford 3 Year: 2020 Page 18 of 34 Annual Radioactive Effluent Release Report 5.0 SOLID WASTE

SUMMARY

5.1 Solid Waste Shipped Offsite for Burial or Disposal (Not Irradiated Fuel) 5.1.1 Types of Waste Table 7, Types of Solid Waste Summary - Waterford 3 Types of Waste Total Quantity (m3 ) Total Activity (Ci) Est. Total Error (%)

a. Spent resins, filter sludges, evaporator bottoms, etc. 4.36E+01 1.82E+02 2.50E+01 Waste Class A 3.84E+01 6.64E+01 B 5.21E+00 1.16E+02 C 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00
b. Dry compressible waste, contaminated equip, etc. 3.74E+02 2.50E-01 2.50E+01 Waste Class A 3.74E+02 2.50E-01 B 0.00E+00 0.00E+00 C 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00
c. Irradiated components, control rods, etc. 0.00E+00 0.00E+00 2.50E+01 Waste Class A 0.00E+00 0.00E+00 B 0.00E+00 0.00E+00 C 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00
d. Other - Used Oil 6.58E+00 3.07E-01 2.50E+01 Waste Class A 6.58E+00 3.07E-01 B 0.00E+00 0.00E+00 C 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00

Waterford 3 Year: 2020 Page 19 of 34 Annual Radioactive Effluent Release Report 5.1.2 Estimate of major nuclide composition (by waste type) only >1% [Note 1} are reported.

Table 8, Major Nuclides - Waterford 3 Major Nuclide Composition  % Curies

a. Spent resins, filter sludges, evaporator bottoms, etc.

Mn-54 2.53% 4.62E+00 Fe-55 30.09% 5.49E+01 Co-58 3.69% 6.74E+00 Co-60 19.66% 3.59E+01 Ni-63 33.96% 6.20E+01 Cs-137 7.51% 1.37E+01

b. Dry compressible waste, contaminated equip, etc.

Cr-51 26.56% 6.70E-02 Fe-55 28.42% 7.16E-02 Co-58 16.93% 4.27E-02 Co-60 5.26% 1.32E-02 Ni-63 9.02% 2.27E-02 Zr-95 3.9% 9.84E-03 Nb-95 5.21% 1.31E-02 Cs-137 1.18% 2.98E-03

c. Irradiated components, control rods, etc.

None N/A N/A

d. Other Fe-55 67.34% 2.07E-01 Co-58 1.82% 5.58E-03 Co-60 7.83% 2.41E-02 Ni-63 18.93% 5.82E-02 Cs-137 1.22% 3.76E-03

[Note 1] - Major" radionuclide is equivalent to a principle radionuclide, i.e. greater than 1 percent of total activity.

Waterford 3 Year: 2020 Page 20 of 34 Annual Radioactive Effluent Release Report 5.1.3 Solid Waste Disposition Table 9, Solid Waste Disposition (Specify Site or Unit)

Number of Mode of Transportation Destination Shipments 13 Hittman Transport Energy Solutions, Bear Creek Processing 2 Hittman Transport Energy Solutions, Gallaher Rd 1 Hittman Transport Resin Solutions, Erwin Table 10, Irradiated Fuel Shipments Disposition (Specify Site or Unit)

Number of Mode of Transportation Destination Shipments None N/A N/A

Waterford 3 Year: 2020 Page 21 of 34 Annual Radioactive Effluent Release Report 6.0 RADIOLOGICAL IMPACT TO MAN 6.1 10CFR Part50, Appendix I Evaluation Table 11, Dose Assessment - Waterford 3 Quarter 1 Quarter 2 Quarter 3 Quarter 4 Annual Liquid Effluent Dose Limit, Total 1.5 mrem 1.5 mrem 1.5 mrem 1.5 mrem 3 mrem Body Total Body Dose (mrem) 8.73E-05 1.80E-04 7.66E-04 2.64E-03 3.67E-03

% of Limit 5.82E-03 1.20E-02 5.11E-02 1.76E-01 1.22E-01 Liquid Effluent Dose Limit, Any 5 mrem 5 mrem 5 mrem 5 mrem 10 mrem Organ Maximum Organ Dose (mrem) 9.30E-05 2.52E-04 8.58E-04 4.00E-03 5.20E-03

% of Limit 1.86E-03 5.04E-03 1.72E-02 8.00E-02 5.20E-02 Gaseous Effluent Dose Limit, 5 mrad 5 mrad 5 mrad 5 mrad 10 mrad Gamma Air Gamma Air Dose (mrad) 0.00E+00 0.00E+00 1.63E-03 3.88E-05 1.67E-03

% of Limit 0.00E+00 0.00E+00 3.26E-02 7.76E-04 1.67E-02 Gaseous Effluent Dose Limit, 10 mrad 10 mrad 10 mrad 10 mrad 20 mrad Beta Air Beta Air Dose (mrad) 0.00E+00 0.00E+00 5.82E-04 1.12E-04 6.94E-04

% of Limit 0.00E+00 0.00E+00 5.82E-03 1.12E-03 3.47E-03 Gaseous Effluent Organ Dose Limit (Iodine, Tritium, 7.5 mrem 7.5 mrem 7.5 mrem 7.5 mrem 15 mrem Particulates with > 8 day half-life)

Gaseous Effluent Organ Dose (Iodine, Tritium, Particulates with 1.01E-02 9.47E-03 7.36E-03 1.40E-02 4.09E-02

> 8 day half-life) (mrem)

% of Limit 1.35E-01 1.26E-01 9.81E-02 1.87E-01 2.73E-01

Waterford 3 Year: 2020 Page 22 of 34 Annual Radioactive Effluent Release Report 6.2 Dose to Members of the Public Inside the Site Boundary The Member of the Public inside the site boundary expected to have the maximum exposure due to gaseous effluents, carbon-14, and direct shine would be an employee at the Waterford 1 and 2 fossil fuel plants, located in the NW sector at a distance of approximately 670 meters (0.42 miles) from the reactor building.

The doses for such an individual were determined by scaling the full-time occupancy doses due to airborne effluents, carbon-14, and direct shine by the occupancy time due to a normal working year. Based on an assumed occupancy of 25% (40-hour work week) and the fact that all employees are adults, the calculated doses were determined to be 5.88E-04 mrem to the skin 9.78E-03 mrem to the maximum exposed organ (liver) 8.01E-01 mrem to the Total Body All doses for receptors inside the site boundary were calculated according to the methodology described in the Waterford 3 Offsite Dose Calculation Manual considering only the inhalation and ground plane exposure pathways.

6.3 Dose to a Member of the Public due to Release of Radioactive Material in Groundwater There were no releases of radioactive material in groundwater during the reporting period; therefore, there was no additional dose to a MEMBER OF THE PUBLIC associated with off-site releases of licensed radioactive material via groundwater.

Waterford 3 Year: 2020 Page 23 of 34 Annual Radioactive Effluent Release Report 6.4 40CFR Part 190 Evaluation for an Individual in the Unrestricted Area Table 12, EPA 40 CFR PART 190 Evaluation Whole Body Thyroid Any Other Organ Dose Limit 25 mrem 75 mrem 25 mrem Dose (mrem) 8.88E-01 8.84E-01 2.76E+00

% of Limit 3.55E+00 1.18E+00 1.10E+01 Liquid dose, gaseous dose including C14, direct shine from each unit, ISFSI and any other nuclear power related facility within 5 miles of the station are considered when calculating dose compliance with 40 CFR 190 6.5 40CFR Part 190 Calculation Table 13, EPA 40 CFR Part 190 Calculation Unit Total Body Thyroid Max Organ Routine Airborne Effluents NG Dose WF3 1.58E-03 NA NA (mrem)

Particulate and Iodine Dose (mrem) WF3 4.09E-02 4.09E-02 4.09E-02 Routine Liquid Effluents (mrem) WF3 3.67E-03 7.66E-04 5.20E-03 Airborne Releases of C14 (mrem) WF3 4.67E-01 4.67E-01 2.34E+00 Ground Water & Storm Drain Totals WF3 0.00E+00 0.00E+00 0.00E+00 (mrem)

Direct Shine from areas such as dry cask storage, radwaste storage, WF3 3.75E-01 3.75E-01 3.75E-01 Equipment Mausoleums (mrem)

Total 40 CFR 190 Dose (mrem) WF3 8.88E-01 8.84E-01 2.76E+00

Waterford 3 Year: 2020 Page 24 of 34 Annual Radioactive Effluent Release Report 7.0 METEOROLOGICAL DATA 7.1 Joint Frequency Distributions

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 0 Table 14, Hours of Each Wind Speed and Direction -Stability A Wind Speed (m/s) 0.22- 0.51- 0.76- 2.1- 3.1- 7.1- 10.1-Wind Direction 1.1-1.5 1.6-2.0 5.1-7.0 >13.1 Total 0.50 0.75 1.0 3.0 5.0 10.0 13.0 N 0.00 0.00 0.00 0.00 1.00 6.00 10.00 8.00 0.00 0.00 0.00 25 NNE 0.00 0.00 0.00 0.00 3.00 6.00 4.00 2.00 0.00 0.00 0.00 15 NE 0.00 0.00 0.00 0.00 1.00 9.00 77.00 7.00 0.00 0.00 0.00 94 ENE 0.00 0.00 0.00 0.00 0.00 1.00 13.00 1.00 0.00 0.00 0.00 15 E 0.00 0.00 0.00 0.00 0.00 0.00 2.00 2.00 0.00 0.00 0.00 4 ESE 0.00 0.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00 0.00 0.00 2 SE 0.00 0.00 0.00 0.00 0.00 2.00 15.00 8.00 0.00 0.00 0.00 25 SSE 0.00 0.00 0.00 0.00 0.00 3.00 21.00 12.00 0.00 0.00 0.00 36 S 0.00 0.00 0.00 0.00 0.00 3.00 20.00 9.00 1.00 0.00 0.00 33 SSW 0.00 0.00 0.00 0.00 1.00 6.00 6.00 4.00 1.00 0.00 0.00 18 SW 0.00 0.00 0.00 0.00 2.00 7.00 13.00 4.00 0.00 0.00 0.00 26 WSW 0.00 0.00 0.00 0.00 1.00 1.00 3.00 0.00 0.00 0.00 0.00 5 W 0.00 0.00 0.00 0.00 1.00 2.00 4.00 1.00 0.00 0.00 0.00 8 WNW 0.00 0.00 0.00 0.00 0.00 0.00 5.00 0.00 0.00 0.00 0.00 5 NW 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3.00 0.00 0.00 0.00 3 NNW 0.00 0.00 0.00 0.00 0.00 7.00 10.00 5.00 0.00 0.00 0.00 22 Total 0 0 0 0 10 54 204 66 2 0 0 336

Waterford 3 Year: 2020 Page 25 of 34 Annual Radioactive Effluent Release Report

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 0 Table 15, Hours of Each Wind Speed and Direction -Stability B Wind Speed (m/s) 0.22- 0.51- 0.76- 2.1- 3.1- 7.1- 10.1-Wind Direction 1.1-1.5 1.6-2.0 5.1-7.0 >13.1 Total 0.50 0.75 1.0 3.0 5.0 10.0 13.0 N 0.00 0.00 0.00 0.00 2.00 12.00 20.00 7.00 2.00 0.00 0.00 43 NNE 0.00 0.00 0.00 1.00 2.00 7.00 8.00 2.00 0.00 0.00 0.00 20 NE 0.00 0.00 0.00 0.00 0.00 23.00 64.00 8.00 0.00 0.00 0.00 95 ENE 0.00 0.00 0.00 0.00 0.00 2.00 5.00 3.00 0.00 0.00 0.00 10 E 0.00 0.00 0.00 0.00 0.00 0.00 2.00 0.00 0.00 0.00 0.00 2 ESE 0.00 0.00 0.00 0.00 0.00 1.00 1.00 1.00 0.00 0.00 0.00 3 SE 0.00 0.00 0.00 0.00 0.00 2.00 16.00 12.00 0.00 0.00 0.00 30 SSE 0.00 0.00 0.00 0.00 0.00 5.00 11.00 6.00 1.00 0.00 0.00 23 S 0.00 0.00 0.00 1.00 1.00 14.00 19.00 3.00 1.00 0.00 0.00 39 SSW 0.00 0.00 0.00 1.00 5.00 10.00 14.00 4.00 0.00 0.00 0.00 34 SW 0.00 0.00 0.00 0.00 2.00 14.00 19.00 2.00 0.00 0.00 0.00 37 WSW 0.00 0.00 0.00 0.00 0.00 10.00 7.00 0.00 0.00 0.00 0.00 17 W 0.00 0.00 0.00 1.00 1.00 3.00 4.00 1.00 0.00 0.00 0.00 10 WNW 0.00 0.00 0.00 0.00 1.00 6.00 7.00 1.00 0.00 0.00 0.00 15 NW 0.00 0.00 0.00 1.00 1.00 1.00 6.00 6.00 0.00 0.00 0.00 15 NNW 0.00 0.00 0.00 0.00 1.00 4.00 7.00 3.00 0.00 0.00 0.00 15 Total 0 0 0 5 16 114 210 59 4 0 0 408

Waterford 3 Year: 2020 Page 26 of 34 Annual Radioactive Effluent Release Report

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 0 Table 16, Hours of Each Wind Speed and Direction -Stability C Wind Speed (m/s) 0.22- 0.51- 0.76- 2.1- 3.1- 7.1- 10.1-Wind Direction 1.1-1.5 1.6-2.0 5.1-7.0 >13.1 Total 0.50 0.75 1.0 3.0 5.0 10.0 13.0 N 0.00 0.00 0.00 1.00 5.00 18.00 25.00 9.00 2.00 0.00 0.00 60 NNE 0.00 0.00 1.00 1.00 4.00 4.00 5.00 6.00 2.00 0.00 0.00 23 NE 0.00 0.00 0.00 0.00 2.00 38.00 81.00 10.00 0.00 0.00 0.00 131 ENE 0.00 0.00 0.00 1.00 0.00 10.00 14.00 3.00 0.00 0.00 0.00 28 E 0.00 0.00 0.00 0.00 0.00 3.00 2.00 0.00 0.00 0.00 0.00 5 ESE 0.00 0.00 0.00 1.00 1.00 0.00 4.00 3.00 0.00 0.00 0.00 9 SE 0.00 0.00 0.00 0.00 0.00 4.00 17.00 20.00 1.00 0.00 0.00 42 SSE 0.00 0.00 0.00 0.00 0.00 9.00 25.00 8.00 5.00 0.00 0.00 47 S 0.00 0.00 0.00 1.00 1.00 8.00 15.00 8.00 2.00 1.00 0.00 36 SSW 0.00 0.00 0.00 3.00 3.00 12.00 21.00 8.00 0.00 2.00 0.00 49 SW 0.00 0.00 0.00 2.00 3.00 13.00 24.00 2.00 0.00 0.00 0.00 44 WSW 0.00 0.00 1.00 2.00 11.00 21.00 14.00 0.00 0.00 0.00 0.00 49 W 0.00 0.00 0.00 2.00 9.00 15.00 12.00 0.00 0.00 0.00 0.00 38 WNW 0.00 0.00 0.00 2.00 4.00 16.00 6.00 1.00 0.00 0.00 0.00 29 NW 0.00 0.00 0.00 3.00 8.00 4.00 10.00 2.00 0.00 0.00 0.00 27 NNW 0.00 0.00 0.00 1.00 7.00 15.00 24.00 7.00 0.00 0.00 0.00 54 Total 0 0 2 20 58 190 299 87 12 3 0 671

Waterford 3 Year: 2020 Page 27 of 34 Annual Radioactive Effluent Release Report

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 0 Table 17, Hours of Each Wind Speed and Direction -Stability D Wind Speed (m/s)

Wind Direction 0.22- 0.51- 0.76- 1.1- 1.6- 2.1-3.0 3.1-5.0 5.1- 7.1- 10.1- 13.1- Total 0.50 0.75 1.0 1.5 2.0 7.0 10.0 13.0 18.0 N 0.00 1.00 1.00 8.00 23.00 59.00 99.00 73.00 19.00 0.00 0.00 283 NNE 0.00 1.00 3.00 12.00 17.00 58.00 68.00 21.00 15.00 1.00 0.00 196 NE 0.00 0.00 1.00 10.00 21.00 156.00 243.00 49.00 16.00 0.00 0.00 496 ENE 0.00 0.00 2.00 4.00 8.00 25.00 82.00 76.00 19.00 0.00 0.00 216 E 0.00 0.00 0.00 2.00 6.00 12.00 30.00 13.00 0.00 0.00 0.00 63 ESE 0.00 0.00 0.00 1.00 1.00 6.00 34.00 35.00 5.00 0.00 0.00 82 SE 0.00 0.00 0.00 4.00 2.00 10.00 101.00 53.00 13.00 4.00 0.00 187 SSE 0.00 0.00 2.00 4.00 11.00 84.00 140.00 55.00 14.00 1.00 0.00 311 S 0.00 1.00 4.00 7.00 15.00 74.00 106.00 30.00 13.00 5.00 0.00 255 SSW 0.00 1.00 1.00 9.00 21.00 34.00 56.00 52.00 31.00 1.00 0.00 206 SW 0.00 0.00 3.00 6.00 19.00 45.00 80.00 10.00 0.00 0.00 0.00 163 WSW 0.00 1.00 6.00 7.00 21.00 46.00 27.00 0.00 0.00 0.00 0.00 108 W 0.00 3.00 3.00 12.00 18.00 38.00 36.00 1.00 0.00 0.00 0.00 111 WNW 0.00 1.00 1.00 10.00 18.00 27.00 23.00 4.00 0.00 0.00 0.00 84 NW 0.00 0.00 0.00 5.00 17.00 19.00 43.00 15.00 0.00 0.00 0.00 99 NNW 0.00 1.00 3.00 3.00 11.00 35.00 113.00 39.00 0.00 0.00 1.00 206 Total 0 10 30 104 229 728 1281 526 145 12 1 3066

Waterford 3 Year: 2020 Page 28 of 34 Annual Radioactive Effluent Release Report

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 0 Table 18, Hours of Each Wind Speed and Direction -Stability E Wind Speed (m/s) 0.22- 0.51- 0.76- 5.1- 7.1- 10.1-Wind Direction 1.1-1.5 1.6-2.0 2.1-3.0 3.1-5.0 >13.1 Total 0.50 0.75 1.0 7.0 10.0 13.0 N 1.00 3.00 3.00 17.00 30.00 70.00 58.00 22.00 0.00 0.00 0.00 204 NNE 0.00 0.00 4.00 16.00 31.00 102.00 73.00 11.00 0.00 0.00 0.00 237 NE 0.00 0.00 5.00 11.00 21.00 180.00 116.00 14.00 0.00 0.00 0.00 347 ENE 0.00 1.00 3.00 3.00 19.00 49.00 117.00 16.00 0.00 0.00 0.00 208 E 0.00 1.00 1.00 7.00 8.00 22.00 49.00 6.00 0.00 0.00 0.00 94 ESE 0.00 0.00 1.00 6.00 8.00 20.00 117.00 38.00 1.00 0.00 0.00 191 SE 0.00 0.00 1.00 6.00 11.00 33.00 105.00 23.00 0.00 0.00 0.00 179 SSE 0.00 0.00 3.00 10.00 43.00 129.00 50.00 7.00 1.00 0.00 0.00 243 S 0.00 1.00 6.00 50.00 81.00 83.00 58.00 5.00 1.00 0.00 0.00 285 SSW 2.00 7.00 20.00 46.00 54.00 40.00 15.00 6.00 4.00 0.00 0.00 194 SW 0.00 3.00 12.00 38.00 54.00 32.00 12.00 1.00 0.00 0.00 0.00 152 WSW 1.00 5.00 9.00 44.00 32.00 15.00 4.00 1.00 0.00 0.00 0.00 111 W 0.00 1.00 10.00 34.00 22.00 14.00 4.00 1.00 0.00 0.00 0.00 86 WNW 2.00 1.00 8.00 27.00 14.00 6.00 5.00 0.00 0.00 0.00 0.00 63 NW 0.00 4.00 3.00 13.00 16.00 27.00 6.00 0.00 0.00 0.00 0.00 69 NNW 0.00 0.00 2.00 6.00 12.00 30.00 20.00 0.00 0.00 0.00 0.00 70 Total 6 27 91 334 456 852 809 151 7 0 0 2733

Waterford 3 Year: 2020 Page 29 of 34 Annual Radioactive Effluent Release Report

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 0 Table 19, Hours of Each Wind Speed and Direction -Stability F Wind Speed (m/s) 0.22- 0.51- 0.76- 2.1- 3.1- 7.1- 10.1- 13.1-Wind Direction 1.1-1.5 1.6-2.0 5.1-7.0 Total 0.50 0.75 1.0 3.0 5.0 10.0 13.0 18.0 N 0.00 3.00 10.00 24.00 24.00 8.00 1.00 0.00 0.00 0.00 0.00 70 NNE 0.00 1.00 3.00 13.00 15.00 21.00 1.00 0.00 0.00 0.00 0.00 54 NE 0.00 4.00 0.00 3.00 10.00 60.00 6.00 0.00 0.00 0.00 0.00 83 ENE 1.00 4.00 2.00 4.00 5.00 3.00 4.00 0.00 0.00 0.00 0.00 23 E 0.00 0.00 1.00 3.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 5 ESE 0.00 2.00 3.00 4.00 0.00 3.00 4.00 0.00 0.00 0.00 0.00 16 SE 0.00 1.00 2.00 2.00 6.00 11.00 2.00 1.00 0.00 0.00 0.00 25 SSE 0.00 4.00 3.00 18.00 19.00 33.00 4.00 0.00 0.00 0.00 0.00 81 S 1.00 3.00 13.00 39.00 51.00 25.00 2.00 0.00 0.00 0.00 0.00 134 SSW 5.00 4.00 37.00 69.00 37.00 6.00 2.00 0.00 0.00 0.00 0.00 160 SW 1.00 16.00 32.00 48.00 19.00 2.00 0.00 0.00 0.00 0.00 0.00 118 WSW 5.00 13.00 15.00 18.00 8.00 2.00 0.00 0.00 0.00 0.00 0.00 61 W 3.00 13.00 25.00 37.00 5.00 1.00 0.00 0.00 0.00 0.00 0.00 84 WNW 3.00 3.00 12.00 20.00 9.00 0.00 0.00 0.00 0.00 0.00 0.00 47 NW 1.00 5.00 3.00 11.00 7.00 1.00 2.00 0.00 0.00 0.00 0.00 30 NNW 1.00 2.00 8.00 13.00 3.00 8.00 0.00 0.00 0.00 0.00 0.00 35 Total 21 78 169 326 219 184 28 1 0 0 0 1026

Waterford 3 Year: 2020 Page 30 of 34 Annual Radioactive Effluent Release Report

1. Period of Record: 01/01/2020 - 12/31/2020
2. Elevation: 10 m
3. Total period of calm hours: 2 Table 20, Hours of Each Wind Speed and Direction -Stability G Wind Speed (m/s) 0.22- 0.51- 0.76- 2.1- 3.1- 7.1- 10.1- 13.1-Wind Direction 1.1-1.5 1.6-2.0 5.1-7.0 Total 0.50 0.75 1.0 3.0 5.0 10.0 13.0 18.0 N 0.00 1.00 7.00 6.00 5.00 0.00 0.00 0.00 0.00 0.00 0.00 19 NNE 1.00 0.00 0.00 1.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 3 NE 0.00 1.00 1.00 0.00 2.00 0.00 0.00 0.00 0.00 0.00 0.00 4 ENE 0.00 0.00 0.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 E 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 ESE 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 SE 0.00 0.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1 SSE 1.00 1.00 3.00 2.00 10.00 8.00 1.00 0.00 0.00 0.00 0.00 26 S 2.00 4.00 3.00 25.00 20.00 0.00 0.00 0.00 0.00 0.00 0.00 54 SSW 0.00 8.00 8.00 43.00 9.00 1.00 0.00 0.00 0.00 0.00 0.00 69 SW 3.00 15.00 21.00 23.00 6.00 0.00 0.00 0.00 0.00 0.00 0.00 68 WSW 13.00 21.00 31.00 8.00 2.00 0.00 0.00 0.00 0.00 0.00 0.00 75 W 11.00 30.00 27.00 21.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 90 WNW 7.00 7.00 9.00 10.00 2.00 0.00 0.00 0.00 0.00 0.00 0.00 35 NW 5.00 7.00 11.00 4.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 27 NNW 2.00 5.00 7.00 8.00 2.00 0.00 0.00 0.00 0.00 0.00 0.00 24 Total 46 100 129 152 60 9 1 0 0 0 0 497

Waterford 3 Year: 2020 Page 31 of 34 Annual Radioactive Effluent Release Report 7.2 Stability Class Table 21, Classification of Atmospheric Stability Stability Condition Pasquill Categories Hours (Percentage)

Extremely Unstable A 3.85 Moderately Stable B 4.67 Slightly Unstable C 7.68 Neutral D 35.09 Slightly Stable E 31.28 Moderately Stable F 11.74 Extremely Stable G 5.69

Waterford 3 Year: 2020 Page 32 of 34 Annual Radioactive Effluent Release Report Attachment 1 Page 1 of 1 Revised Offsite Dose Calculation Manual N/A

Waterford 3 Year: 2020 Page 33 of 34 Annual Radioactive Effluent Release Report Attachment 2 Page 1 of 1 Revised Process Control Program N/A

Waterford 3 I Year: 2020 I Page 34 of 34 Annual Radioactive Effluent Release Report Page 1 of 1 Errata/Corrections to Previous ARERRs Plant: Waterfon:I 3 Year: 2019 Pa-ge 2.17 mher llnformalio111

1. Unavailability of REMP Milk Samples liJue to the u navailabilJty of three milk sampling locations within firve kilometers of the plant, Broad Leaf sampling is perfomied in accordance with Technical IReq;utrements Manual (TIRM) Table 3.12-1. Milk is c-0lleoted, when available, from the control location and one identified sampling location as indicated in UNT-005-014, Offsite Dose Ca!culation Manual, Attachmenl 7.13.
2. Adivity !Released Via Secondary Pathways lhe ftollowing secondary release paths were continuously monitored for radioacti~ty:
  • llle Hot Machine*Shop Exhaust (AH-35),
  • Decontammation Shop Exlhaust (AH-34),
  • Hie IRAB H&V Equipment Room V entilation System Exhaust (E-41 A and E-41 B);

and ,

  • Hie Switch;gea:r/Cable Vau'lt Area Ventllation System (AH-25).

Continuous samp'ling for these areas is maintained to demonstrate the operability of Iinstalled trerument systems and to verify integriit y of barriers separating primary and secondary ventilaUon systems. Sampling for ~hese areas was !limited to continuous particulate and iodine sampling andl monthly nobfe gas grab sampling_ The aciivity released via ~hese secondary pathways resulted from routine o;perations and remained bellow significanl levels.

3. IM1ssed Effluent Samples Per 1RM Sedion 4 .11 , c-0ntin:uous charcoal cartridge and particulate samp e is required weekly_Samples shall be changed at least once per seven days and analyses shall be completed w i~hin 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> aft.er changing or removal fmm sampl:er.

Pilant stack A and B particulate andl charcoal samples w ere collected on 4/30/2019 (fm week of 4123120m - 413-012019), and only Plant stack B was analyzed on 4/30/rn. On 51212019, it was discovered 111:at Plan! Stack B rad monitor did not have flow due to particulate p111mp replacement wo.Tk until 412612019; Plant Stack A dld have flow the

,entire time period. The .analysis for Plant stack A {removed firom sampler on 413-012019 at 11:21 ) was compl'e ted on 51212019 12:38, 49.3 lhours after bein;g removed from the sampl'e r vice the required 48 lhours. Both samples had no, detectable activity. Minimum detectable aciivmes w ere less the required LlDs per TRM.

4.  !Reactor Coolant System Average Energy ~E-Bar)

!Reactor Coolant System E-Bar calcula1tions were pertormed on 7/4/2019 and 12/1512019' with val:Ues of 0.0651 and 0.0257 Mev/disintegration, respectively. Reactor Coolant System E-Bar is supplied for information only and is not used for effluent dklse calculations.

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