Text

Independent Spent Fuel Storage Installation - Updated Annual Radioactive Effluent Release Report 2023
	ML24312A315
Person / Time
Site:	Palo Verde
Issue date:	11/05/2024
From:	Dilorenzo M; Arizona Power Services
To:	; Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk
References
	102-08880 MDD/MSG
	Download: ML24312A315 (1)
	v • d • e

Technical Specification 5.6.3 Technical Requirements Manual 3.7.102.4 A member of the STARS Alliance LLC Callaway

Diablo Canyon

Palo Verde

Wolf Creek Palo Verde Nuclear Generating Station PO Box 52034 Phoenix, AZ 85072 Mail Station 7636 Tel (623) 393-3495 102-08880 MDD/MSG November 5, 2024 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Palo Verde Nuclear Generating Station (PVNGS) Units 1, 2, 3, and Independent Spent Fuel Storage Installation Renewed Operating License Nos. NPF-41, NPF-51, and NPF-74 Docket Nos. STN 50-528, STN 50-529, STN 50-530, and STN 72-44 Updated Annual Radioactive Effluent Release Report 2023 Enclosed please find the updated PVNGS Units 1, 2, and 3 Annual Radioactive Effluent Release Report (ARERR) for 2023. Arizona Public Service Company (APS) is submitting this report pursuant to the PVNGS Technical Specification Reporting Requirement, Section 5.6.3. The report also includes details regarding radioactive effluent releases from the PVNGS Independent Spent Fuel Storage Installation.

PVNGS Technical Requirement Manual, Section 3.7.102.4, requires an annual report to be prepared and submitted if sealed source or fission detector leakage tests reveal the presence of greater than or equal to 0.005 microcuries of removable contamination. There were no events in 2023 that met this reporting threshold.

By letter number 102-08797, dated April 24, 2024 [Agencywide Documents Access and Management System (ADAMS) Accession Number ML24116A208], Arizona Public Service Company (APS) submitted the original ARERR. Upon receipt of the initial report, the Nuclear Regulatory Commission identified a possible error with the information provided in Table 46 of the report. As a result, APS corrected this information, which is provided in the attached revised report.

No new commitments are being made to the Nuclear Regulatory Commission by this letter.

Should you need further information regarding this submittal, please contact me at (623) 393-3495.

Sincerely, Michael D. DiLorenzo Department Leader Nuclear Regulatory Affairs MDD/MSG/cr

Enclosure:

Palo Verde Nuclear Generating Station Units 1, 2, and 3 Updated 2023 Annual Radioactive Effluent Release Report Dilorenzo, Michael D(Z99838)

Digitally signed by Dilorenzo, Michael D(Z99838)

Date: 2024.11.05 17:28:25 -07'00'

102-08880 MDD/MSG ATTN: Document Control Desk U.S. Nuclear Regulatory Commission PVNGS Updated Annual Radioactive Effluent Release Report 2023 Page 2 cc:

J. Monninger NRC Region IV Regional Administrator W. T. Orders NRC NRR Project Manager for PVNGS L. N. Merker NRC Senior Resident Inspector for PVNGS B. Goretzki Arizona Department of Health Services - Bureau of Radiation Control

Enclosure Palo Verde Nuclear Generating Station Units 1, 2, and 3 Updated 2023 Annual Radioactive Effluent Release Report

2023 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT USNRC Docket No. STN 50-528/529/530 RCTSAI 1566 Prepared by:

Reviewed by:

Approved by:

PALO VERDE NUCLEAR GENERATING STATION UNITS 1, 2 AND 3 Michaelson, Thomas (Z18156)

Digitally signed by Michaelson, Thomas (Z18156)

Date: 2024.09.10 08:51:37 -07'00' Donnelly, Patrick T(Z32986)

Digitally signed by Donnelly, Patrick T(Z32986)

Date: 2024.09.10 09:20:00 -07'00' Simon, Erik (Z17539)

Digitally signed by Simon, Erik (Z17539)

Date: 2024.09.10 12:59:50 -07'00'

PVNGS ARERR 2023 Page 0 TABLE OF CONTENTS INTRODUCTION................................................................................................................................................... 2 BIBLIOGRAPHY.................................................................................................................................................... 3 APPENDIX A: EFFLUENT AND WASTE DISPOSAL REPORTS.................................................................................. 5 1.0 REGULATORY LIMITS............................................................................................................................ 6 2.0 MAXIMUM PERMISSIBLE CONCENTRATIONS...................................................................................... 8 3.0 AVERAGE ENERGY................................................................................................................................ 8 4.0 MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIOACTIVITY IN GASEOUS EFFLUENTS........ 8 5.0 BATCH RELEASES.................................................................................................................................. 8 6.0 ABNORMAL RELEASES.......................................................................................................................... 8 7.0 OFFSITE DOSE CALCULATION MANUAL AND PROCESS CONTROL PROGRAM (PCP) REVISIONS......... 8 8.0 EFFLUENTS AND SOLID WASTES.......................................................................................................... 8 9.0 MISCELLANEOUS INFORMATION......................................................................................................... 9 10.0 METEOROLOGICAL DATA................................................................................................................... 10 11.0 DISCUSSION........................................................................................................................................ 11 APPENDIX B: DOSE CALCULATIONS................................................................................................................... 60 APPENDIX C: NEI 07-07 GROUNDWATER PROTECTION INITIATIVE SAMPLING................................................ 68 APPENDIX D: ADJUSTED PERMITS..................................................................................................................... 73 LIST OF TABLES Table 1: Evaporation Pond Data....................................................................................................................... 14 Table 2: Batch Release Data............................................................................................................................. 14 Table 3: Units 1, 2, and 3 Gaseous Effluents Average Lower Limit of Detection (Ci/cc)............................... 15 Table 4: Unit 1 Gaseous Effluents (Summation Of All Releases)..................................................................... 16 Table 5: Unit 1 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines........... 17 Table 6: Unit 1 Gaseous Effluents-Ground Level Release-Continuous - Particulates.................................... 18 Table 7: Unit 1 Gaseous Effluents - Ground Level Releases-Batch - Fission Gases and Iodines..................... 19 Table 8: Unit 1 Gaseous Effluents - Ground Level Releases - Batch - Particulates.......................................... 20 Table 9: Unit 1 Gaseous Effluents-Continuous and Batch-Fission Gases and Iodines................................... 21 Table 10: Unit 1 Gaseous Effluents - Continuous and Batch - Particulates..................................................... 22 Table 11: Unit 1 Radiation Doses At And Beyond The Site Boundary.............................................................. 23 Table 12: Unit 2 Gaseous Effluents - Summation of All Releases.................................................................... 24 Table 13: Unit 2 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines......... 25 Table 14: Unit 2 Gaseous Effluents - Ground Level Releases - Continuous - Particulates................................ 26 Table 15: Unit 2 Gaseous Effluents - Ground Level Releases - Batch - Fission Gases and Iodines.................. 27 Table 16: Unit 2 Gaseous Effluents - Ground Level Releases - Batch - Particulates........................................ 28 Table 17: Unit 2 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines............................... 29 Table 18: Unit 2 Gaseous Effluents - Continuous and Batch - Particulates..................................................... 30 Table 19: Unit 2 Radiation Doses at And Beyond The Site Boundary.............................................................. 31 Table 20: Unit 3 Gaseous Effluents - Summation Of All Releases.................................................................... 32 Table 21: Unit 3 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines......... 33 Table 22: Unit 3 Gaseous Effluents - Ground Level Releases - Continuous Particulates................................. 34 Table 23: Unit 3 Gaseous Effluents - Ground Level Releases - Batch - Fission Gases and Iodines.................. 35 Table 24: Unit 3 Gaseous Effluents - Ground Level Releases - Batch - Particulates........................................ 36 Table 25: Unit 3 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines............................... 37 Table 26: Unit 3 Gaseous Effluents - Continuous and Batch - Particulates..................................................... 38 Table 27: Unit 3 Radiation Doses at And Beyond the Site Boundary............................................................... 39

PVNGS ARERR 2023 Page 1 Table 28: Units 1, 2, and 3 Gaseous Effluents - Continuous - Fission Gases and Iodines - Total by Quarter.. 40 Table 29: Units 1, 2, and 3 Gaseous Effluents - Continuous - Particulates - Total by Quarter........................ 41 Table 30: Units 1, 2, and 3 Gaseous Effluents - Batch - Fission Gases and Iodines - Total by Quarter............ 42 Table 31: Units 1, 2, and 3 Gaseous Effluents - Batch - Particulates - Total by Quarter.................................. 43 Table 32: Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines - Total by Quarter.............................................................................................................................................................. 44 Table 33: Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Particulates - Total by Quarter....... 45 Table 34: Units 1, 2, and 3 Gaseous Effluents-Continuous - Fission Gases and Iodine -Total by Unit............ 46 Table 35: Units 1, 2, and 3 Gaseous Effluents-Continuous - Particulates - Total by Unit............................... 47 Table 36: Units 1, 2, and 3 Gaseous Effluents-Batch - Fission Gases and Iodine - Total by Unit.................... 48 Table 37: Units 1, 2, and 3 Gaseous Effluents-Batch - Particulates - Total by Unit......................................... 49 Table 38: Units 1, 2, and 3 Gaseous Effluents-Continuous and Batch - Fission Gases and Iodine - Total by Unit.................................................................................................................................................................... 50 Table 39: Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Particulates - Total by Unit............. 51 Table 40: Estimation of Total Percent Error..................................................................................................... 52 Table 41: Effluent Monitoring Instrumentation Out of Service Greater Than 30 Days................................... 52 Table 42: Solid Waste Summary...................................................................................................................... 53 Table 43: Doses to Special Location................................................................................................................. 62 Table 44: Integrated Population Dose............................................................................................................ 63 Table 45: Summary of Individual Doses.......................................................................................................... 68 Table 46: 2023 NEI 07-07 Ground Water Protection Initiative PVNGS Well Data........................................... 71 Table 47: Adjusted Permits.............................................................................................................................. 74 LIST OF FIGURES Figure 1: Onsite Well Locations & Groundwater Contours of March 2023...................................................... 69 Figure 2: Onsite Well Locations & Groundwater Contours of September 2023.............................................. 70

PVNGS ARERR 2023 Page 2 INTRODUCTION This report summarizes the effluent and waste disposal source term data, meteorological data, and doses from radioactive effluents for the Palo Verde Nuclear Generating Station (PVNGS) for the period of January through December 2023. The data presented meets the format provided in Regulatory Guide 1.21 (Revision 1, June 1974) of the U.S. Nuclear Regulatory Commission. The report summarizes the quantities of gaseous effluents released from each PVNGS unit and waste disposed of from PVNGS. Because PVNGS does not have a liquid effluent pathway, no liquid effluents are summarized.

PVNGS ARERR 2023 Page 3 IBLIOGRAY BIBLIOGRAPHY U.S. Nuclear Regulatory Commission, 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, 1974 & Revision 2, 2009.

U.S. Nuclear Regulatory Commission, Regulatory Guide 1.23 (Safety Guide 23), Onsite Meteorological Programs, 1972.

U.S. Nuclear Regulatory Commission, NUREG/CR-2919, XOQDOQ: Computer Program for the Meteorological Evaluation of Routine Effluent Releases at Nuclear Power Stations, 1982.

U.S. Nuclear Regulatory Commission, NUREG-0579, Users Guide to GASPAR Code, June 1980.

U.S. Nuclear Regulatory Commission, Regulatory Guide 1.109, Calculations of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR 50, Appendix I, Revision 1, 1977.

U.S. Nuclear Regulatory Commission, NUREG-0172, Age-specific Radiation Dose Commitment Factors for a One-Year Chronic Intake, 1977.

U.S. Nuclear Regulatory Commission, NUREG-0133, Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants, 1978.

Technical Specifications, Palo Verde Nuclear Generating Station, Units 1, 2 and 3, Docket No. 50-528/529/530.

Bechtel Power Corp., Cooling Tower Blowdown System Solar Evaporation Pond, Sept. 1980.

Generation Engineering, Geotechnical Exploration for Evaporation Pond #2, Oct. 1986 Letter No. 212-00789-WFQ/RHM, 1989 PVNGS Evaporation Pan Data, Jan. 1989.

Offsite Dose Calculation Manual Palo Verde Nuclear Generating Station Units 1, 2 and 3, Rev. 31.

NEI 07-07, Nuclear Energy Institute, Industry Ground Water Protection Initiative - Final Guidance Document, Rev. 1 March 2019.

Calculation 13-NC-CH-0200, Rev 7, FSAR - Primary Coolant Activities (PCA)

PVNGS Emergency Plan, Palo Verde Nuclear Generating Station, Units 1, 2 and 3, Rev. 75, December 2023.

PVNGS ARERR 2023 Page 4 Environmental Report Operating License Stage, Palo Verde Nuclear Generating Station, December 1981.PPENDIX A: EFFLUENT AND WASTE DISPOSAL REPORTS

PVNGS ARERR 2023 Page 5 APPENDIX A: EFFLUENT AND WASTE DISPOSAL REPORTS

PVNGS ARERR 2023 Page 6 1.0 REGULATORY LIMITS 1.1 Liquid Releases 1.1.1 PVNGS ODCM Requirement 3.2 The concentration of radioactive material discharged from secondary system liquid waste to the circulating water system shall be limited to:

5.0E-07 Ci/ml for principal gamma emitters (except Ce-144) 3.0E-06 Ci/ml for Ce-144 1.0E-06 Ci/ml for I-131 1.0E-03 Ci/ml for H-3 The concentration of radioactive material discharged from secondary system liquid waste to the onsite evaporation ponds shall be limited to:

2.0E-06 Ci/ml for Cs-134 2.0E-06 Ci/ml for Cs-137 The concentrations specified in 10 CFR Part 20.1001-20.2402, Appendix B, Table 2, Column 2, for all other isotopes.

1.1.2 PVNGS ODCM Requirement 4.4 The dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluents released, from each reactor unit to areas at and beyond the SITE BOUNDARY 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.

1.2 Gaseous Releases 1.2.1 PVNGS ODCM Requirement 3.1 The dose rate due to radioactive materials released in gaseous effluents from the site shall be limited to the following:

a.

For noble gases: Less than or equal to 500 mrem/yr. to the total body and less than or equal to 3,000 mrem/yr. to the skin, and

b.

For I-131 and I-133, for tritium, and for all radionuclides in particulate form with half-lives greater than 8 days: Less than or equal to 1,500 mrem/yr. to any organ.

PVNGS ARERR 2023 Page 7 1.2.2 PVNGS ODCM Requirement 4.1 The air dose due to noble gases released in gaseous effluents, from each reactor unit to areas at and beyond the SITE BOUNDARY 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.

1.2.3 PVNGS ODCM Requirement 4.2 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, from each reactor unit to areas at and beyond the SITE BOUNDARY 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.

1.2.4 PVNGS ODCM Requirement 4.3 The GASEOUS RADWASTE SYSTEM and the VENTILATION EXHAUST TREATMENT SYSTEM shall be used to reduce radioactive materials in gaseous waste prior to their discharge when the projected gaseous effluent air doses due to gaseous effluent releases, from each reactor unit, from the site, when averaged over 31 days, would exceed 0.2 mrad for gamma radiation and 0.4 mrad for beta radiation.

The VENTILATION EXHAUST TREATMENT SYSTEM shall be used to reduce radioactive materials in gaseous waste prior to their discharge when the projected doses due to gaseous effluent releases, from each reactor unit to areas at and beyond the SITE BOUNDARY when averaged over 31 days, would exceed 0.3 mrem to any organ of a MEMBER OF THE PUBLIC.

1.3 Total Dose 1.3.1 PVNGS ODCM Requirement 5.1 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.

PVNGS ARERR 2023 Page 8 2.0 MAXIMUM PERMISSIBLE CONCENTRATIONS Air: Release Concentrations are limited to dose rate limits described in section 1.2.1 of this report.

3.0 AVERAGE ENERGY The average energy () of the radionuclide mixture in releases of fission and activation gases is not applicable to PVNGS.

4.0 MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIOACTIVITY IN GASEOUS EFFLUENTS For continuous releases, sampling is in accordance with PVNGS ODCM Table 3-1. Particulate and iodine radionuclides are sampled continuously at the Plant Vent and Fuel Building exhaust points. The particulate filters and charcoal cartridges are exchanged for analysis at least four times per month. Noble gas and tritium are sampled at least once per 31 days.

The hourly average Radiation Monitoring System (RMS) effluent monitor readings are used, when available, to account for increases and decreases in noble gas concentrations between noble gas grab samples. The tritium concentration is assumed constant between sampling periods.

For batch releases, sampling is also in accordance with PVNGS ODCM Table 3-1. For containment purges, the noble gas concentration may be adjusted to account for decreases or increases in concentration during the purge using RMS readings. The volume of air released during the purge is determined using the exhaust fan rated flow rate. For Waste Gas Decay Tank releases, the volume released is corrected to standard pressure.

Effective January 1, 2004, Containment Purge release permits are updated by removing the permit pre-release particulate and iodine activity. This eliminates double accounting for the Containment Purge particulate and iodine activity at the Plant Vent but allows the particulate and iodine activity to be included in the Containment Purge pre-release dose projection.

The Lower Limit of Detection (LLD) of a measurement system is defined in Table 3 - 1 of the PVNGS ODCM. An average LLD for each radionuclide is provided in Table 3.

5.0 BATCH RELEASES 5.1 Gaseous Batch release durations are presented in Table 2.

5.2 Liquid None.

6.0 ABNORMAL RELEASES None.

7.0 ODCM AND PCP REVISIONS 7.1 There were no revisions to the Offsite Dose Calculation Manual (ODCM) in 2023.

7.2 There were no revisions to the Radwaste Process Control Program (PCP) in 2023.

8.0 EFFLUENTS AND SOLID WASTES 8.1 Gaseous Effluents

PVNGS ARERR 2023 Page 9 Gaseous effluent information is presented in Table 1 through Table 41. Included in these tables are summaries of the effluents and estimated total error.

8.2 Liquid Effluents There were no liquid effluent releases beyond the site boundary from PVNGS.

8.3 Solid Waste Solid Waste Shipments are summarized in Appendix A.

9.0 MISCELLANEOUS INFORMATION 9.1 EVAPORATION PONDS Releases made to the Evaporation Ponds are limited to the concentrations specified in PVNGS ODCM Requirement 3.2. The Evaporation Ponds were monitored in accordance with PVNGS ODCM Requirement 6.1.

The historical average evaporation rate is approximately 12 inches per pond for the first and fourth quarters, and 33 inches per pond for the second and third quarters.

Evaporation Pond One is approximately 261 acres which is divided into three segments:

Pond 1A (131 acres), Pond 1B (77.5 acres) and Pond 1C (52.5 acres). This equates to a quarterly evaporation rate from Pond One of 3.22E+11 cc for the first and fourth quarters, and 8.85E+11 cc evaporated for the second and third quarters.

Evaporation Pond Two is approximately 232 acres which is divided into three segments:

Pond 2A (117 acres), Pond 2B (87 acres) and Pond 2C (30 acres). The quarterly evaporation rate from Pond Two is 2.89E+11 cc for the first and fourth quarters, and 7.97E+11 cc for the second and third quarters.

Evaporation Pond Three is constructed of two smaller ponds of 90 acres each (3A and 3B). The quarterly evaporation rate from Pond Three is 2.20E+11 cc for the first and fourth quarters, and 6.04E+11 cc for the second and third quarters.

Using a site boundary X/Q of 5.0E-05 sec/m3 for the evaporation ponds and equation 4-3 from the ODCM, the dose from the evaporation ponds to a hypothetical individual at the site boundary, for all pathways, is summarized in Table 1.

PVNGS ARERR 2023 Page 10 9.2 RADIATION MONITORING SYSTEM SETPOINT VERIFICATION Current effluent monitor noble gas channel alert alarm set points are based on an assumed one percent failed fuel source term. The current method used for the set point values are more reliable than basing the set points upon the constantly varying values of the actual noble gas source term presented in Table 38.

9.3 RCS RADIOIODINE (TRM T5.0.600)

There were no cases where primary coolant specific activity exceeded the Technical Specification 3.4.17 limits during the reporting period.

INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI)

There are no radioactive effluents from the NAC-UMS System. Direct dose at the Site Boundary is reported in the Annual Radiological Environmental Operating Report.

9.4 MAJOR CHANGES TO THE RADIOACTIVE WASTE SYSTEMS (liquid, gaseous, and solid).

None.

9.5 NEI 07-07, Industry Groundwater Protection Initiative Sample results from the groundwater wells that are not described in the ODCM as part of the REMP (NEI 07-07, Industry Groundwater Protection Initiative, August 2007), are included in Appendix C. This initiative provides added assurance that ground water will not be adversely affected by PVNGS operations.

There were no NEI 07-07 reportable leaks or spills. There were no positive sample results, and all samples results were below the Lower Limit of Detection.

9.6 REPORT ADDENDUM None.

10.0 METEOROLOGICAL DATA The data recovery for the reporting period was 100.0 percent. The predominant wind direction was from the southwest approximately 22.6 percent of the time. The predominant stability class was stability class "F" approximately 19.1 percent of the time. Average wind speed during the reporting period was approximately 7.1 miles per hour at the 35-foot elevation.

The annual meteorological data (Hourly Average Data or Joint Frequency Distribution) will be maintained on site in a file that shall be provided to the NRC upon request.

PVNGS ARERR 2023 Page 11 11.0 DISCUSSION 11.1 Unit One Unit One operated with a refueling outage (1R24-A) from October 7, 2023, to November 17, 2023.

Maintenance outages:

x 1M24A from April 4, 2023, to April 13, 2023.

Estimated Number of Fuel Defects1 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0

0 0

0 11.2 Unit Two Unit Two operated with a refueling outage (2R24-A) from April 8, 2023, to May 13, 2023.

Maintenance outages:

x 2M25A from May 22, 2023, to May 29, 2023.

x 2M25B from June 2, 2023, to June 4, 2023.

Estimated Number of Fuel Defects1 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0

0 0

0 11.3 Unit Three Unit Three operated without a refueling outage.

Maintenance outages:

None.

Estimated Number of Fuel Defects1 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0

0 0

0 1 Source: Institute of Nuclear Power (INPO), Industry Reporting Information System (IRIS)

PVNGS ARERR 2023 Page 12 11.4 Carbon-14 Carbon-14 is formed naturally in the upper atmosphere, and it is also formed in operating nuclear reactors.

Carbon-14 is not a new power plant effluent. The overall quantity of radioactive releases has steadily decreased due to improvements in power plant operations.

Based on the decline in other radionuclides released, Carbon-14 has the potential to achieve the status of a principal radionuclide as defined in Regulatory Guide 1.21.

The dose received by a member of the public from Carbon-14 from nuclear power plant effluents is much lower than regulatory limits, and has been a very small contributor to the total radiation dose received each year from natural and manmade sources.

Studies by the United Nations Scientific Committee on the Effects of Atomic Radiation, the National Research Council report on the Biological Effects of Ionizing Radiation (BEIR VII), and the National Council on Radiation Protection and Measurements all show that the risk associated with low-dose radiation from natural and man-made sources, including nuclear power plants, is negligible.

The average member of the public in the United States is exposed to 620 mrem every year, of which approximately 311 mrem of this comes from natural sources. The majority of the remaining dose (approximately 300 mrem) comes from medical procedures (such as, x-Rays, CAT scans, etc.). Less than one-tenth of a percent of all non-occupational radiation exposure is from nuclear facilities.2 The PVNGS calculated Carbon-14 production rate is 18.5 curies per operating cycle (500 days) or 13.5 curies per year. The production rate of 13.5 curies will be divided equally between each quarter, 3.38 curies per reactor, and the estimated Carbon-14 activity is included in the inhalation and ingestion dose calculations.

11.5 Tritium PVNGS does not have a liquid release pathway. Removal of tritium is performed by operation of the Boric Acid Concentrator (BAC) in the release mode. Comparison of PVNGS annual tritium curies released to other utilities should be made only after summing both liquid and gaseous tritium curies released.

2 Source: National Council on Radiation Protection and Measurements NCRP Report No. 160, Table 1.1.

PVNGS ARERR 2023 Page 13 11.6 Dose Summary Dose for 2023 was primarily due to the release of tritium. The calculated tritium production rate for each PVNGS reactor is estimated to be approximately 1150 curies per year; however, a large fraction of the tritium produced does not become part of the reactor coolant source term. The tritium produced in the coolant contributes immediately to the overall tritium source term, but the tritium produced by fission and neutron capture in the Core Element Assembly and borated shim rods only contributes to the reactor coolant source term if it is released through the cladding. To control in-plant tritium concentrations, tritium releases account for tritium production that enters the reactor coolant. For 2023, the total tritium released from PVNGS was 2.81E+03 curies (see Table 39).

PVNGS ARERR 2023 Page 14 Table 1: Evaporation Pond Data Table 1: Evaporation Pond Data Evaporation Pond 1(1A, 1B, 1C)

Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Historical Evaporation (ml) 3.22E+11 8.85E+11 8.85E+11 3.22E+11 Tritium Concentration (Ci/cc) 7.51E-07 8.04E-07 7.91E-07 9.56E-07 Tritium Curies 2.42E-01 7.11E-01 7.00E-01 3.08E-01 1.96E+00 Evaporation Pond 2 (2A and 2B)

Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Historical Evaporation (ml) 2.52E+11 6.92E+11 6.92E+11 2.52E+11 Tritium Concentration (Ci/cc) 8.89E-07 8.39E-07 6.33E-07 7.36E-07 Tritium Curies 2.24E-01 5.81E-01 4.38E-01 1.85E-01 1.43E+00 Evaporation Pond 3 (3A and 3B)

Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Historical Evaporation (ml) 2.20E+11 6.04E+11 6.04E+11 2.20E+11 Tritium Concentration (Ci/cc) 2.81E-07 2.81E-07

<LLD 2.20E-07 Tritium Curies 6.16E-02 1.69E-01

<LLD 4.82E-02 2.79E-01 Dose (mrem)

Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Pond 1 3.35E-03 9.87E-03 9.71E-03 4.27E-03 2.72E-02 Pond 2 3.10E-03 8.06E-03 6.07E-03 2.57E-03 1.98E-02 Pond 3 8.54E-04 2.35E-03

<LLD 6.68E-04 3.87E-03 Total 7.31E-03 2.03E-02 1.58E-02 7.51E-03 5.09E-02 (1) Evaporation Pond 3A has no plant related influent, no detectable tritium, and is excluded from sampling.

Note - All 2023 samples are included. For some other data points, conservative or best estimates are used.

Trending is carried out continuously to verify the estimated data points as new samples are recorded.

Table 2: Batch Release Data Table 2: Batch Release Data All times are in hours Unit 1 Unit 2 Unit 3 January - June Number of batch releases 23 41 23 Total time period for batch releases 713.11 2243.58 189.798 Maximum time period for a batch release 168.00 168.00 141.53 Average time period for a batch release 31.00 54.72 8.25 Minimum time period for a batch release 0.63 0.05 0.65 July - December Number of batch releases 34 17 36 Total time period for batch releases 1612.85 301.84 1054.50 Maximum time period for a batch release 168.00 168.00 168.00 Average time period for a batch release 47.44 17.76 29.29 Minimum time period for a batch release 0.10 0.60 0.58 January - December Number of batch releases 57 58 59 Total time period for batch releases 2325.96 2545.42 1244.30 Maximum time period for a batch release 168.00 168.00 168.00 Average time period for a batch release 40.81 43.89 21.09 Minimum time period for a batch release 0.10 0.05 0.58

PVNGS ARERR 2023 Page 15 ble 3: Units 1, 2, and 3 Gaseous Effluents Average Lower Limit of Detection (Ci/cc)

Table 3:

Units 1, 2, and 3 Gaseous Effluents Average Lower Limit of Detection (Ci/cc)

Nuclide Continuous Batch Nuclide Continuous Batch Antimony-122 2.20E-13 1.90E-11 Argon-41 4.50E-08 4.50E-08 Antimony-124 8.40E-14 1.70E-11 Krypton-85 7.40E-06 7.40E-06 Barium-140 3.40E-13 5.70E-11 Krypton-85m 2.20E-08 2.20E-08 Bromine-82 3.30E-13 1.40E-11 Krypton-87 5.70E-08 5.70E-08 Cerium-141 8.70E-14 3.10E-11 Krypton-88 7.40E-08 7.40E-08 Cerium-144 3.60E-13 6.50E-11 Xenon-125 2.20E-08 2.20E-08 Cesium-134 1.00E-13 2.60E-11 Xenon-127 2.10E-08 2.10E-08 Cesium-137 8.10E-14 1.70E-11 Xenon-131m 9.10E-07 9.10E-07 Cesium-138 5.20E-10 7.30E-10 Xenon-133 6.30E-08 6.30E-08 Chromium-51 6.90E-13 1.40E-10 Xenon-133m 1.90E-07 1.90E-07 Cobalt-58 8.50E-14 1.70E-11 Xenon-135 2.00E-08 2.00E-08 Cobalt-60 1.00E-13 1.90E-11 Xenon-135m 8.90E-08 8.90E-08 Iron-59 1.70E-13 3.20E-11 Xenon-138 2.00E-07 2.00E-07 Lanthanum-140 2.80E-13 2.10E-11 Iodine-131 8.00E-14 7.00E-12 Manganese-54 8.30E-14 1.70E-11 Iodine-132 6.60E-12 1.90E-11 Molybdenum-99 2.40E-13 2.80E-11 Iodine-133 4.70E-13 1.10E-11 Niobium-95 8.70E-14 1.80E-11 Iodine-134 5.90E-11 8.20E-11 Rubidium-88 1.90E-08 1.90E-08 Iodine-135 7.00E-12 5.50E-11 Ruthenium-103 7.40E-14 1.50E-11 Strontium-89 2.15E-15 (1)

Strontium-90 5.60E-16 (1)

Tellurium-123m 6.60E-14 1.50E-11 Tritium 3.80E-07 3.80E-07 Zinc-65 1.90E-13 3.80E-11 Zirconium-95 1.80E-13 4.10E-11 Gross Alpha 3.60E-15 (1)

(1) Not required for batch releases.

PVNGS ARERR 2023 Page 16 Table 4: Unit 1 Gaseous Effluents (Summation Of All Releases)

Table 4:

Unit 1 Gaseous Effluents (Summation Of All Releases)

Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Est. Total Error (%) (1)

A. Fission & activation gases

1. Total release Ci 4.21E-02 3.32E-02 1.23E-01 2.19E-01 4.17E-01 3.54E+01

2. Average release rate for period Ci/sec 5.42E-03 4.22E-03 1.55E-02 2.75E-02 1.32E-02

3. Percent of ODCM Requirement limit NA (2)

NA (2)

B. Iodine 131

1. Total Iodine 131 Ci

<LLD

<LLD 7.32E-07 7.32E-07 3.32E+01

2. Average release rate for period Ci/sec

<LLD

<LLD 9.21E-08 2.32E-08

3. Percent of ODCM Requirement limit NA (2)

NA (2)

C. Particulates

1. Particulates with half-lives > 8 days Ci

<LLD 5.51E-06 5.96E-05 2.93E-03 3.00E-03 3.43E+01

2. Average release rate for period Ci/sec

<LLD 7.01E-07 7.50E-06 3.69E-04 9.51E-05

3. Percent of ODCM Requirement limit NA (2)

NA (2)

4. Gross Alpha radioactivity Ci

< LLD

< LLD D. Tritium

1. Total release Ci 7.26E+01 3.38E+02 3.63E+02 1.24E+02 8.97E+02 3.85E+01

2. Average release rate for period Ci/sec 9.34E+00 4.29E+01 4.57E+01 1.56E+01 2.84E+01

3. Percent of ODCM Requirement limit NA (2)

NA (2)

(1) Estimated total error methodology is presented in Table 40.

(2) See Table 11 for percent of ODCM Requirement limits.

PVNGS ARERR 2023 Page 17 Table 5: Unit 1 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines Table 5: Unit 1 Gaseous Effluents - Ground Level Releases - Continuous -

Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci

<LLD

<LLD Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci

<LLD

2. Iodines I-131 Ci

<LLD

<LLD 6.34E-07 6.34E-07 I-132 Ci

<LLD

<LLD I-133 Ci

<LLD

<LLD 2.55E-06 2.55E-06 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD

<LLD 3.19E-06 3.19E-06

PVNGS ARERR 2023 Page 18 Table 6: Unit 1 Gaseous Effluents-Ground Level Release-Continuous - Particulates Table 6:

Unit 1 Gaseous Effluents - Ground Level Releases - Continuous - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD 6.46E-07 6.46E-07 Ba-140 Ci

<LLD

<LLD 2.87E-03 2.87E-03 Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD 8.73E-06 8.73E-06 Co-60 Ci

<LLD 5.51E-06 1.42E-05 1.65E-05 3.62E-05 Cr-51 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD 5.48E-04 5.48E-04 Fe-59 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD 5.99E-04 5.99E-04 Mn-54 Ci

<LLD

<LLD 2.10E-07 2.10E-07 Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD

<LLD Os-191 Ci

<LLD

<LLD 2.56E-06 2.56E-06 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD 4.09E-07 4.09E-07 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD 1.12E-05 1.12E-05 Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD 5.67E-07 5.67E-07 Total Ci

<LLD 5.51E-06 1.42E-05 4.06E-03 4.08E-03

4. Tritium H-3 Ci 1.88E+01 1.93E+01 2.57E+01 2.82E+01 9.20E+01

PVNGS ARERR 2023 Page 19 Table 7: Unit 1 Gaseous Effluents - Ground Level Releases-Batch - Fission Gases and Iodines Table 7:

Unit 1 Gaseous Effluents - Ground Level Releases-Batch - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 4.21E-02 3.32E-02 1.23E-01 3.13E-02 2.30E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD 3.93E-05 3.93E-05 Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD 1.90E-03 1.90E-03 Xe-133 Ci

<LLD

<LLD 1.84E-01 1.84E-01 Xe-133m Ci

<LLD

<LLD 1.53E-03 1.53E-03 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 4.21E-02 3.32E-02 1.23E-01 2.19E-01 4.17E-01

2. Iodines I-131 Ci

<LLD

<LLD 9.76E-08 9.76E-08 I-132 Ci

<LLD

<LLD 1.71E-05 1.71E-05 I-133 Ci

<LLD

<LLD 1.28E-07 1.28E-07 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD

<LLD 1.73E-05 1.73E-05

PVNGS ARERR 2023 Page 20 Table 8: Unit 1 Gaseous Effluents - Ground Level Releases - Batch - Particulates Table 8:

Unit 1 Gaseous Effluents - Ground Level Releases - Batch - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD 4.54E-05

<LLD 4.54E-05 Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD

<LLD 5.30E-06 5.30E-06 Ce-141 Ci

<LLD

<LLD 1.08E-08 1.08E-08 Ce-144 Ci

<LLD

<LLD 4.53E-07 4.53E-07 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD 4.46E-06 4.46E-06 Co-60 Ci

<LLD

<LLD 1.01E-05 1.01E-05 Cr-51 Ci

<LLD

<LLD 1.32E-06 1.32E-06 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD 3.07E-08 3.07E-08 Mn-54 Ci

<LLD

<LLD 2.43E-07 2.43E-07 Mo-99 Ci

<LLD

<LLD 1.66E-07 1.66E-07 Nb-95 Ci

<LLD

<LLD 1.74E-07 1.74E-07 Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Sr-90 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Tc-99m Ci

<LLD

<LLD 7.09E-09 7.09E-09 Te-123m Ci

<LLD

<LLD 4.76E-08 4.76E-08 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Total Ci

<LLD

<LLD 4.54E-05 2.23E-05 6.77E-05 4.Tritium H-3 Ci 5.38E+01 3.18E+02 3.37E+02 9.56E+01 8.05E+02 Note 1 - Not required for batch releases.

PVNGS ARERR 2023 Page 21 Table 9: Unit 1 Gaseous Effluents-Continuous and Batch-Fission Gases and Iodines Table 9:

Unit 1 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 4.21E-02 3.32E-02 1.23E-01 3.13E-02 2.30E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD 3.93E-05 3.93E-05 Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD 1.90E-03 1.90E-03 Xe-133 Ci

<LLD

<LLD 1.84E-01 1.84E-01 Xe-133m Ci

<LLD

<LLD 1.53E-03 1.53E-03 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 4.21E-02 3.32E-02 1.23E-01 2.19E-01 4.17E-01

2. Iodines I-131 Ci

<LLD

<LLD 7.32E-07 7.32E-07 I-132 Ci

<LLD

<LLD 1.71E-05 1.71E-05 I-133 Ci

<LLD

<LLD 2.68E-06 2.68E-06 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD

<LLD 2.05E-05 2.05E-05

PVNGS ARERR 2023 Page 22 Table 10: Unit 1 Gaseous Effluents - Continuous and Batch - Particulates Table 10:

Unit 1 Gaseous Effluents - Continuous and Batch - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD 4.54E-05 6.46E-07 4.60E-05 Ba-140 Ci

<LLD

<LLD 2.87E-03 2.87E-03 Br-82 Ci

<LLD

<LLD 5.30E-06 5.30E-06 Ce-141 Ci

<LLD

<LLD 1.08E-08 1.08E-08 Ce-144 Ci

<LLD

<LLD 4.53E-07 4.53E-07 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD 1.32E-05 1.32E-05 Co-60 Ci

<LLD 5.51E-06 1.42E-05 2.66E-05 4.63E-05 Cr-51 Ci

<LLD

<LLD 1.32E-06 1.32E-06 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD 5.48E-04 5.48E-04 Fe-59 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD 5.99E-04 5.99E-04 Mn-54 Ci

<LLD

<LLD 4.53E-07 4.53E-07 Mo-99 Ci

<LLD

<LLD 1.66E-07 1.66E-07 Nb-95 Ci

<LLD

<LLD 1.74E-07 1.74E-07 Os-191 Ci

<LLD

<LLD 2.56E-06 2.56E-06 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD 4.09E-07 4.09E-07 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD 1.12E-05 1.12E-05 Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD 7.09E-09 7.09E-09 Te-123m Ci

<LLD

<LLD 4.76E-08 4.76E-08 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD 5.67E-07 5.67E-07 Total Ci

<LLD 5.51E-06 5.96E-05 4.08E-03 4.15E-03 Total > 8 days Ci

<LLD 5.51E-06 5.96E-05 2.93E-03 3.00E-03

4. Tritium H-3 Ci 7.26E+01 3.38E+02 3.63E+02 1.24E+02 8.97E+02

PVNGS ARERR 2023 Page 23 Table 11: Unit 1 Radiation Doses At And Beyond The Site Boundary Table 11:

Unit 1 Radiation Doses At And Beyond The Site Boundary Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Gamma Air Dose mrad 9.28E-05 7.31E-05 2.72E-04 8.36E-05 5.21E-04 ODCM Req. 4.1 Limit mrad 5.00E+00 5.00E+00 5.00E+00 5.00E+00 1.00E+01

% ODCM Limit 1.86E-03 1.46E-03 5.43E-03 1.67E-03 5.21E-03 Beta Air Dose mrad 3.27E-05 2.58E-05 9.58E-05 8.97E-05 2.44E-04 ODCM Req. 4.1 Limit mrad 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01

% ODCM Limit 3.27E-04 2.58E-04 9.58E-04 8.97E-04 1.22E-03 Maximum Organ Dose (excluding skin) mrem 2.87E-02 1.06E-01 1.14E-01 4.27E-02 2.88E-01 Age Child Teen Teen Teen Teen Organ Bone Lung Lung Lung Lung ODCM Req. 4.2 Limit mrem 7.50E+00 7.50E+00 7.50E+00 7.50E+00 1.50E+01

% ODCM Limit 3.83E-01 1.41E+00 1.51E+00 5.70E-01 1.92E+00 Calculations are based on parameters and methodologies of the ODCM using historical meteorology. Dose is calculated to a hypothetical individual. In contrast, Appendix C dose calculations are based on concurrent meteorology, a real individual, and only the actual pathways present.

T

PVNGS ARERR 2023 Page 24 Table 12: Unit 2 Gaseous Effluents - Summation of All Releases Table 12:

Unit 2 Gaseous Effluents - Summation of All Releases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Est. Total Error (%) (1)

A. Fission & activation gases

1. Total release Ci 1.03E-01 6.72E-01 4.06E-02 3.46E-02 8.50E-01 3.54E+01

2. Average release rate for period Ci/sec 1.32E-02 8.55E-03 5.11E-03 4.35E-03 2.70E-02

3. Percent of ODCM Requirement limit NA (2)

NA (2)

B. Iodine 131

1. Total Iodine 131 Ci

<LLD 3.45E-06

<LLD

<LLD 3.45E-06 3.32E+01

2. Average release rate for period Ci/sec

<LLD 4.39E-07

<LLD

<LLD 1.10E-07

3. Percent of ODCM Requirement limit NA (2)

NA (2)

C. Particulates

1. Particulates with half-lives > 8 days Ci 3.97E-06 1.06E-02 8.23E-06 1.66E-06 1.07E-02 3.43E+01

2. Average release rate for period Ci/sec 5.10E-07 1.35E-03 1.04E-06 2.09E-07 3.38E-04

3. Percent of ODCM Requirement limit NA (2)

NA (2)

4. Gross Alpha radioactivity Ci

< LLD

< LLD D. Tritium

1. Total release Ci 6.85E+02 3.30E+02 1.95E+01 5.89E+01 1.09E+03 3.85E+01

2. Average release rate for period Ci/sec 8.81E+01 4.20E+01 2.46E+00 7.41E+00 3.47E+01

3. Percent of ODCM Requirement limit NA (2)

NA (2)

(1) Estimated total error methodology is presented in Table 40.

(2) See Table 19 for percent of ODCM Requirement limits.

PVNGS ARERR 2023 Page 25 Table 13: Unit 2 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines Table 13:

Unit 2 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci

<LLD

<LLD Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci

<LLD

2. Iodines I-131 Ci

<LLD 1.05E-06

<LLD

<LLD 1.05E-06 I-132 Ci

<LLD

<LLD I-133 Ci

<LLD

<LLD I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD 1.05E-06

<LLD

<LLD 1.05E-06

PVNGS ARERR 2023 Page 26 Table 14: Unit 2 Gaseous Effluents - Ground Level Releases - Continuous - Particulates Table 14:

Unit 2 Gaseous Effluents - Ground Level Releases - Continuous - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD 3.98E-07

<LLD

<LLD 3.98E-07 Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD 1.25E-04 1.53E-06

<LLD 1.27E-04 Co-60 Ci 3.97E-06 8.03E-05 3.45E-06 1.35E-06 8.90E-05 Cr-51 Ci

<LLD 2.56E-04

<LLD

<LLD 2.56E-04 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD 1.03E-06

<LLD

<LLD 1.03E-06 La-140 Ci

<LLD

<LLD Mn-54 Ci

<LLD 1.05E-05

<LLD

<LLD 1.05E-05 Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD 1.40E-04 2.31E-06

<LLD 1.42E-04 Os-191 Ci

<LLD

<LLD 3.12E-07 3.12E-07 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 8.60E-05 9.45E-07

<LLD 8.70E-05 Total Ci 3.97E-06 7.00E-04 8.23E-06 1.66E-06 7.13E-04

4. Tritium H-3 Ci 2.06E+01 2.08E+01 1.95E+01 1.94E+01 8.03E+01

PVNGS ARERR 2023 Page 27 Table 15: Unit 2 Gaseous Effluents - Ground Level Releases - Batch - Fission Gases and Iodines Table 15:

Unit 2 Gaseous Effluents - Ground Level Releases - Batch - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 9.86E-02 2.15E-01 4.01E-02 3.41E-02 3.88E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD 4.50E-04

<LLD

<LLD 4.50E-04 Xe-133 Ci 4.44E-03 4.56E-01 5.58E-04 4.11E-04 4.62E-01 Xe-133m Ci

<LLD 3.82E-04

<LLD

<LLD 3.82E-04 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 1.03E-01 6.72E-01 4.06E-02 3.46E-02 8.50E-01

2. Iodines I-131 Ci

<LLD 2.41E-06

<LLD

<LLD 2.41E-06 I-132 Ci

<LLD 2.90E-04

<LLD

<LLD 2.90E-04 I-133 Ci

<LLD

<LLD I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD 2.92E-04

<LLD

<LLD 2.92E-04

PVNGS ARERR 2023 Page 28 Table 16: Unit 2 Gaseous Effluents - Ground Level Releases - Batch - Particulates Table 16:

Unit 2 Gaseous Effluents - Ground Level Releases - Batch - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD 2.82E-05

<LLD

<LLD 2.82E-05 Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD 3.99E-05

<LLD

<LLD 3.99E-05 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD 3.17E-03

<LLD

<LLD 3.17E-03 Co-60 Ci

<LLD 6.77E-04

<LLD

<LLD 6.77E-04 Cr-51 Ci

<LLD 2.96E-03

<LLD

<LLD 2.96E-03 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD 4.41E-07

<LLD

<LLD 4.41E-07 Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD 6.56E-05

<LLD

<LLD 6.56E-05 La-140 Ci

<LLD

<LLD Mn-54 Ci

<LLD 9.61E-05

<LLD

<LLD 9.61E-05 Mo-99 Ci

<LLD 1.34E-03

<LLD

<LLD 1.34E-03 Nb-95 Ci

<LLD 9.30E-04

<LLD

<LLD 9.30E-04 Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD 8.20E-06

<LLD

<LLD 8.20E-06 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Sr-90 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Tc-99m Ci

<LLD 3.61E-06

<LLD

<LLD 3.61E-06 Te-123m Ci

<LLD 1.89E-06

<LLD

<LLD 1.89E-06 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 6.59E-04

<LLD

<LLD 6.59E-04 Total Ci

<LLD 9.98E-03

<LLD

<LLD 9.98E-03

4. Tritium H-3 Ci 6.65E+02 3.10E+02 7.26E-03 3.96E+01 1.01E+03 Note 1 - Not required for batch releases.

PVNGS ARERR 2023 Page 29 Table 17: Unit 2 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines Table 17:

Unit 2 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 9.86E-02 2.15E-01 4.01E-02 3.41E-02 3.88E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD 4.50E-04

<LLD

<LLD 4.50E-04 Xe-133 Ci 4.44E-03 4.56E-01 5.58E-04 4.11E-04 4.62E-01 Xe-133m Ci

<LLD 3.82E-04

<LLD

<LLD 3.82E-04 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 1.03E-01 6.72E-01 4.06E-02 3.46E-02 8.50E-01

2. Iodines I-131 Ci

<LLD 3.45E-06

<LLD

<LLD 3.45E-06 I-132 Ci

<LLD 2.90E-04

<LLD

<LLD 2.90E-04 I-133 Ci

<LLD

<LLD I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD 2.93E-04

<LLD

<LLD 2.93E-04

PVNGS ARERR 2023 Page 30 Table 18: Unit 2 Gaseous Effluents - Continuous and Batch - Particulates Table 18:

Unit 2 Gaseous Effluents - Continuous and Batch - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD 3.98E-07

<LLD

<LLD 3.98E-07 Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD 2.82E-05

<LLD

<LLD 2.82E-05 Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD 3.99E-05

<LLD

<LLD 3.99E-05 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD 3.30E-03 1.53E-06

<LLD 3.30E-03 Co-60 Ci 3.97E-06 7.57E-04 3.45E-06 1.35E-06 7.66E-04 Cr-51 Ci

<LLD 3.22E-03

<LLD

<LLD 3.22E-03 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD 4.41E-07

<LLD

<LLD 4.41E-07 Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD 6.67E-05

<LLD

<LLD 6.67E-05 La-140 Ci

<LLD

<LLD Mn-54 Ci

<LLD 1.07E-04

<LLD

<LLD 1.07E-04 Mo-99 Ci

<LLD 1.34E-03

<LLD

<LLD 1.34E-03 Nb-95 Ci

<LLD 1.07E-03 2.31E-06

<LLD 1.07E-03 Os-191 Ci

<LLD

<LLD 3.12E-07 3.12E-07 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD 8.20E-06

<LLD

<LLD 8.20E-06 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD 3.61E-06

<LLD

<LLD 3.61E-06 Te-123m Ci

<LLD 1.89E-06

<LLD

<LLD 1.89E-06 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 7.45E-04 9.45E-07

<LLD 7.46E-04 Total Ci 3.97E-06 1.07E-02 8.23E-06 1.66E-06 1.07E-02 Total > 8 days Ci 3.97E-06 1.06E-02 8.23E-06 1.66E-06 1.07E-02

4. Tritium H-3 Ci 6.85E+02 3.30E+02 1.95E+01 5.89E+01 1.09E+03 Table 19: Unit 2 Radiation Doses at And Beyond The Site Boundary

PVNGS ARERR 2023 Page 31 Table 19:

Unit 2 Radiation Doses at And Beyond the Site Boundary Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Gamma Air Dose mrad 2.30E-04 5.38E-04 9.34E-05 7.96E-05 9.41E-04 ODCM Req. 4.1 Limit mrad 5.00E+00 5.00E+00 5.00E+00 5.00E+00 1.00E+01

% ODCM Limit 4.60E-03 1.08E-02 1.87E-03 1.59E-03 9.41E-03 Beta Air Dose mrad 8.26E-05 3.46E-04 3.31E-05 2.82E-05 4.90E-04 ODCM Req. 4.1 Limit mrad 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01

% ODCM Limit 8.26E-04 3.46E-03 3.31E-04 2.82E-04 2.45E-03 Maximum Organ Dose (excluding skin) mrem 2.23E-01 1.13E-01 3.04E-02 3.04E-02 3.69E-01 Age Teen Teen Child Child Teen Organ Lung Lung Bone Bone Lung ODCM Req. 4.2 Limit 7.50E+00 7.50E+00 7.50E+00 7.50E+00 1.50E+01

% ODCM Limit 2.97E+00 1.51E+00 4.05E-01 4.05E-01 2.46E+00 Calculations are based on parameters and methodologies of the ODCM using historical meteorology. Dose is calculated to a hypothetical individual. In contrast, Appendix C dose calculations are based on concurrent meteorology, a real individual, and only the actual pathways present.

PVNGS ARERR 2023 Page 32 Table 20: Unit 3 Gaseous Effluents - Summation Of All Releases Table 20:

Unit 3 Gaseous Effluents - Summation of All Releases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Est. Total Error (%)(1)

A. Fission & activation gases

1. Total release Ci 7.41E-02 8.66E-02 8.27E-02 1.04E-01 3.48E-01 3.54E+01

2. Average release rate for period Ci/sec 9.53E-03 1.10E-02 1.04E-02 1.31E-02 1.10E-02

3. Percent of ODCM Requirement limit NA (2)

NA (2)

B. Iodine 131

1. Total Iodine 131 Ci

<LLD

<LLD 3.32E+01

2. Average release rate for period Ci/sec

<LLD

3. Percent of ODCM Requirement limit NA (2)

NA (2)

C. Particulates

1. Particulates with half-lives > 8 days Ci

<LLD

<LLD 3.43E+01

2. Average release rate for period Ci/sec

<LLD

3. Percent of ODCM Requirement limit NA (2)

NA (2)

4. Gross Alpha radioactivity Ci

< LLD

< LLD D. Tritium

1. Total release Ci 9.19E+01 5.95E+01 1.88E+02 4.77E+02 8.16E+02 3.85E+01

2. Average release rate for period Ci/sec 1.18E+01 7.56E+00 2.37E+01 6.00E+01 2.59E+01

3. Percent of ODCM Requirement limit NA (2)

NA (2)

(1) Estimated total error methodology is presented in Table 40.

(2) See Table 27 for percent of ODCM Requirement limits.

Table U

PVNGS ARERR 2023 Page 33 Table 21: Unit 3 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines Table 21:

Unit 3 Gaseous Effluents - Ground Level Releases - Continuous - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci

<LLD

<LLD Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci

<LLD

2. Iodines I-131 Ci

<LLD

<LLD I-132 Ci

<LLD

<LLD I-133 Ci

<LLD

<LLD I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD

PVNGS ARERR 2023 Page 34 Table 22: Unit 3 Gaseous Effluents - Ground Level Releases - Continuous Particulates Table 22:

Unit 3 Gaseous Effluents - Ground Level Releases - Continuous - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Year Total

3. Particulates Ag-110m Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Co-60 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD Mn-54 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD

<LLD Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Total Ci

<LLD

4. Tritium H-3 Ci 2.11E+01 5.94E+01 3.42E+01 6.51E+01 1.80E+02

PVNGS ARERR 2023 Page 35 Table 23: Unit 3 Gaseous Effluents - Ground Level Releases - Batch - Fission Gases and Iodines Table 23:

Unit 3 Gaseous Effluents - Ground Level Releases - Batch - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Year Total

1. Fission gases Ar-41 Ci 7.41E-02 8.66E-02 8.25E-02 1.04E-01 3.47E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD 1.29E-04 1.08E-04 2.38E-04 Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 7.41E-02 8.66E-02 8.27E-02 1.04E-01 3.48E-01

2. Iodines I-131 Ci

<LLD

<LLD I-132 Ci

<LLD

<LLD I-133 Ci

<LLD

<LLD I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD

PVNGS ARERR 2023 Page 36 Table 24: Unit 3 Gaseous Effluents - Ground Level Releases - Batch - Particulates l

Table 24:

Unit 3 Gaseous Effluents - Ground Level Releases - Batch - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Co-60 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD Mn-54 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD

<LLD Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Sr-90 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Total Ci

<LLD

4. Tritium H-3 Ci 7.08E+01 1.85E-02 1.54E+02 4.12E+02 6.36E+02 Note 1 - Not required for batch releases.

PVNGS ARERR 2023 Page 37 Table 25: Unit 3 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines Table 25:

Unit 3 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 7.41E-02 8.66E-02 8.25E-02 1.04E-01 3.47E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD 1.29E-04 1.08E-04 2.38E-04 Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 7.41E-02 8.66E-02 8.27E-02 1.04E-01 3.48E-01

2. Iodines I-131 Ci

<LLD

<LLD I-132 Ci

<LLD

<LLD I-133 Ci

<LLD

<LLD I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD

PVNGS ARERR 2023 Page 38 Table 26: Unit 3 Gaseous Effluents - Continuous and Batch - Particulates Table 26:

Unit 3 Gaseous Effluents - Continuous and Batch - Particulates Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Co-60 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD Mn-54 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD

<LLD Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Total Ci

<LLD

<LLD Total > 8 days Ci

<LLD

4. Tritium H-3 Ci 9.19E+01 5.95E+01 1.88E+02 4.77E+02 8.16E+02

PVNGS ARERR 2023 Page 39 Table 27: Unit 3 Radiation Doses at And Beyond the Site Boundary Table 27:

Unit 3 Radiation Doses at And Beyond the Site Boundary Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Gamma Air Dose mrad 1.95E-04 2.27E-04 2.17E-04 2.73E-04 9.12E-04 ODCM Req. 4.1 Limit mrad 5.00E+00 5.00E+00 5.00E+00 5.00E+00 1.00E+01

% ODCM Limit 3.89E-03 4.55E-03 4.34E-03 5.47E-03 9.12E-03 Beta Air Dose mrad 6.87E-05 8.02E-05 7.65E-05 9.64E-05 3.22E-04 ODCM Req. 4.1 Limit mrad 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01

% ODCM Limit 6.87E-04 8.02E-04 7.65E-04 9.64E-04 1.61E-03 Maximum Organ Dose (excluding skin) mrem 3.77E-02 3.43E-02 7.23E-02 1.76E-01 3.12E-01 Age Teen Child Teen Teen Teen Organ T. Body Bone T. Body T. Body T. Body ODCM Req. 4.2 Limit mrem 7.50E+00 7.50E+00 7.50E+00 7.50E+00 1.50E+01

% ODCM Limit 5.03E-01 4.57E-01 9.64E-01 2.35E+00 2.08E+00 Calculations are based on parameters and methodologies of the ODCM using historical meteorology. Dose is calculated to a hypothetical individual. In contrast, Appendix C dose calculations are based on concurrent meteorology, a real individual, and only the actual pathways present.

PVNGS ARERR 2023 Page 40 Table 28: Units 1, 2, and 3 Gaseous Effluents - Continuous - Fission Gases and Iodines - Total by Quarter Table 28:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Continuous - Fission Gases and Iodines - Total by Quarter Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci

<LLD

<LLD Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci

<LLD

2. Iodines I-131 Ci

<LLD 1.05E-06

<LLD 6.34E-07 1.68E-06 I-132 Ci

<LLD

<LLD I-133 Ci

<LLD

<LLD 2.55E-06 2.55E-06 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD 1.05E-06

<LLD 3.19E-06 4.24E-06

PVNGS ARERR 2023 Page 41 Table 29: Units 1, 2, and 3 Gaseous Effluents - Continuous - Particulates - Total by Quarter Table 29:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Continuous - Particulates - Total by Quarter Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD 3.98E-07

<LLD 6.46E-07 1.04E-06 Ba-140 Ci

<LLD

<LLD 2.87E-03 2.87E-03 Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD 1.25E-04 1.53E-06 8.73E-06 1.35E-04 Co-60 Ci 3.97E-06 8.58E-05 1.77E-05 1.78E-05 1.25E-04 Cr-51 Ci

<LLD 2.56E-04

<LLD

<LLD 2.56E-04 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci

<LLD

<LLD 5.48E-04 5.48E-04 Fe-59 Ci

<LLD 1.03E-06

<LLD

<LLD 1.03E-06 La-140 Ci

<LLD

<LLD 5.99E-04 5.99E-04 Mn-54 Ci

<LLD 1.05E-05

<LLD 2.10E-07 1.07E-05 Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD 1.40E-04 2.31E-06

<LLD 1.42E-04 Os-191 Ci

<LLD

<LLD 2.87E-06 2.87E-06 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD 4.09E-07 4.09E-07 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD 1.12E-05 1.12E-05 Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 8.60E-05 9.45E-07 5.67E-07 8.75E-05 Total Ci 3.97E-06 7.05E-04 2.25E-05 4.06E-03 4.80E-03

4. Tritium H-3 Ci 6.05E+01 9.95E+01 7.94E+01 1.13E+02 3.52E+02

PVNGS ARERR 2023 Page 42 Table 30: Units 1, 2, and 3 Gaseous Effluents - Batch - Fission Gases and Iodines - Total by Quarter Table 30:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Batch - Fission Gases and Iodines - Total by Quarter Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 2.26E-01 3.35E-01 2.46E-01 1.58E-01 9.65E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD 3.93E-05 3.93E-05 Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD 4.50E-04

<LLD 1.90E-03 2.35E-03 Xe-133 Ci 4.44E-03 4.56E-01 6.88E-04 1.85E-01 6.46E-01 Xe-133m Ci

<LLD 3.82E-04

<LLD 1.53E-03 1.91E-03 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 2.31E-01 7.92E-01 2.47E-01 3.46E-01 1.62E+00

2. Iodines I-131 Ci

<LLD 2.41E-06

<LLD 9.76E-08 2.50E-06 I-132 Ci

<LLD 2.90E-04

<LLD 1.71E-05 3.07E-04 I-133 Ci

<LLD

<LLD 1.28E-07 1.28E-07 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD 2.92E-04

<LLD 1.73E-05 3.09E-04

PVNGS ARERR 2023 Page 43 Table 31: Units 1, 2, and 3 Gaseous Effluents - Batch - Particulates - Total by Quarter r

Table 31:

Units 1, 2, and 3 Gaseous Effluents - Batch - Particulates - Total by Quarter Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD

<LLD 4.54E-05

<LLD 4.54E-05 Ba-140 Ci

<LLD

<LLD Br-82 Ci

<LLD 2.82E-05

<LLD 5.30E-06 3.35E-05 Ce-141 Ci

<LLD

<LLD 1.08E-08 1.08E-08 Ce-144 Ci

<LLD 3.99E-05

<LLD 4.53E-07 4.04E-05 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD 3.17E-03

<LLD 4.46E-06 3.18E-03 Co-60 Ci

<LLD 6.77E-04

<LLD 1.01E-05 6.87E-04 Cr-51 Ci

<LLD 2.96E-03

<LLD 1.32E-06 2.96E-03 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD 4.41E-07

<LLD

<LLD 4.41E-07 Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD 6.56E-05

<LLD

<LLD 6.56E-05 La-140 Ci

<LLD

<LLD 3.07E-08 3.07E-08 Mn-54 Ci

<LLD 9.61E-05

<LLD 2.43E-07 9.64E-05 Mo-99 Ci

<LLD 1.34E-03

<LLD 1.66E-07 1.34E-03 Nb-95 Ci

<LLD 9.30E-04

<LLD 1.74E-07 9.31E-04 Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD 8.20E-06

<LLD

<LLD 8.20E-06 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Sr-90 Ci Note 1 Note 1 Note 1 Note 1 Note 1 Tc-99m Ci

<LLD 3.61E-06

<LLD 7.09E-09 3.62E-06 Te-123m Ci

<LLD 1.89E-06

<LLD 4.76E-08 1.94E-06 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 6.59E-04

<LLD

<LLD 6.59E-04 Total Ci

<LLD 9.98E-03 4.54E-05 2.23E-05 1.00E-02

4. Tritium H-3 Ci 7.89E+02 6.28E+02 4.91E+02 5.47E+02 2.46E+03 Note 1 - Not required for batch releases.

PVNGS ARERR 2023 Page 44 Table 32: Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines - Total by Quarter Table 32:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Continuous and Batch - Fission Gases and Iodines - Total by Quarter Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

1. Fission gases Ar-41 Ci 2.26E-01 3.35E-01 2.46E-01 1.58E-01 9.65E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD 3.93E-05 3.93E-05 Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD 4.50E-04

<LLD 1.90E-03 2.35E-03 Xe-133 Ci 4.44E-03 4.56E-01 6.88E-04 1.85E-01 6.46E-01 Xe-133m Ci

<LLD 3.82E-04

<LLD 1.53E-03 1.91E-03 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 2.31E-01 7.92E-01 2.47E-01 3.46E-01 1.62E+00

2. Iodines I-131 Ci

<LLD 3.45E-06

<LLD 7.32E-07 4.19E-06 I-132 Ci

<LLD 2.90E-04

<LLD 1.71E-05 3.07E-04 I-133 Ci

<LLD

<LLD 2.68E-06 2.68E-06 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci

<LLD 2.93E-04

<LLD 2.05E-05 3.14E-04

PVNGS ARERR 2023 Page 45 Table 33: Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Particulates - Total by Quarter Table 33:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Continuous and Batch - Particulates - Total by Quarter Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total

3. Particulates Ag-110m Ci

<LLD 3.98E-07 4.54E-05 6.46E-07 4.64E-05 Ba-140 Ci

<LLD

<LLD 2.87E-03 2.87E-03 Br-82 Ci

<LLD 2.82E-05

<LLD 5.30E-06 3.35E-05 Ce-141 Ci

<LLD

<LLD 1.08E-08 1.08E-08 Ce-144 Ci

<LLD 3.99E-05

<LLD 4.53E-07 4.04E-05 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD 3.30E-03 1.53E-06 1.32E-05 3.31E-03 Co-60 Ci 3.97E-06 7.63E-04 1.77E-05 2.79E-05 8.12E-04 Cr-51 Ci

<LLD 3.22E-03

<LLD 1.32E-06 3.22E-03 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD 4.41E-07

<LLD

<LLD 4.41E-07 Cs-138 Ci

<LLD

<LLD 5.48E-04 5.48E-04 Fe-59 Ci

<LLD 6.67E-05

<LLD

<LLD 6.67E-05 La-140 Ci

<LLD

<LLD 5.99E-04 5.99E-04 Mn-54 Ci

<LLD 1.07E-04

<LLD 4.53E-07 1.07E-04 Mo-99 Ci

<LLD 1.34E-03

<LLD 1.66E-07 1.34E-03 Nb-95 Ci

<LLD 1.07E-03 2.31E-06 1.74E-07 1.07E-03 Os-191 Ci

<LLD

<LLD 2.87E-06 2.87E-06 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD 8.20E-06

<LLD 4.09E-07 8.61E-06 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD 1.12E-05 1.12E-05 Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD 3.61E-06

<LLD 7.09E-09 3.62E-06 Te-123m Ci

<LLD 1.89E-06

<LLD 4.76E-08 1.94E-06 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 7.45E-04 9.45E-07 5.67E-07 7.46E-04 Total Ci 3.97E-06 1.07E-02 6.79E-05 4.09E-03 1.48E-02 Total > 8 days Ci 3.97E-06 1.07E-02 6.79E-05 2.93E-03 1.37E-02

4. Tritium H-3 Ci 8.50E+02 7.27E+02 5.71E+02 6.59E+02 2.81E+03

PVNGS ARERR 2023 Page 46 Table 34: Units 1, 2, and 3 Gaseous Effluents-Continuous - Fission Gases and Iodine -Total by Unit Table 34:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Continuous - Fission Gases and Iodine -Total by Unit Nuclides Released Unit Unit 1 Unit 2 Unit 3 Total

1. Fission gases Ar-41 Ci

<LLD

<LLD Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci

<LLD

2. Iodines I-131 Ci 6.34E-07 1.05E-06

<LLD 1.68E-06 I-132 Ci

<LLD

<LLD I-133 Ci 2.55E-06

<LLD

<LLD 2.55E-06 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci 3.19E-06 1.05E-06

<LLD 4.24E-06

PVNGS ARERR 2023 Page 47 Table 35: Units 1, 2, and 3 Gaseous Effluents-Continuous - Particulates - Total by Unit Table 35:

Units 1, 2, and 3 - Ground Level Releases Gaseous Effluents - Continuous - Particulates - Total by Unit Nuclides Released Unit Unit 1 Unit 2 Unit 3 Total

3. Particulates Ag-110m Ci 6.46E-07 3.98E-07

<LLD 1.04E-06 Ba-140 Ci 2.87E-03

<LLD

<LLD 2.87E-03 Br-82 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Co-57 Ci

<LLD

<LLD Co-58 Ci 8.73E-06 1.27E-04

<LLD 1.35E-04 Co-60 Ci 3.62E-05 8.90E-05

<LLD 1.25E-04 Cr-51 Ci

<LLD 2.56E-04

<LLD 2.56E-04 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Cs-138 Ci 5.48E-04

<LLD

<LLD 5.48E-04 Fe-59 Ci

<LLD 1.03E-06

<LLD 1.03E-06 La-140 Ci 5.99E-04

<LLD

<LLD 5.99E-04 Mn-54 Ci 2.10E-07 1.05E-05

<LLD 1.07E-05 Mo-99 Ci

<LLD

<LLD Nb-95 Ci

<LLD 1.42E-04

<LLD 1.42E-04 Os-191 Ci 2.56E-06 3.12E-07

<LLD 2.87E-06 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci 4.09E-07

<LLD

<LLD 4.09E-07 Sb-125 Ci

<LLD

<LLD Se-75 Ci 1.12E-05

<LLD

<LLD 1.12E-05 Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Te-123m Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD Zr-95 Ci 5.67E-07 8.70E-05

<LLD 8.75E-05 Total Ci 4.08E-03 7.13E-04

<LLD 4.80E-03

4. Tritium H-3 Ci 9.20E+01 8.03E+01 1.80E+02 3.52E+02

PVNGS ARERR 2023 Page 48 Table 36: Units 1, 2, and 3 Gaseous Effluents-Batch - Fission Gases and Iodine - Total by Unit Table 36:

Units 1, 2, and 3 Gaseous Effluents - Batch - Fission Gases and Iodine - Total by Unit Nuclides Released Unit Unit 1 Unit 2 Unit 3 Total

1. Fission gases Ar-41 Ci 2.30E-01 3.38E-01 3.47E-01 9.65E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci 3.93E-05

<LLD

<LLD 3.93E-05 Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci 1.90E-03 4.50E-04

<LLD 2.35E-03 Xe-133 Ci 1.84E-01 4.62E-01 2.38E-04 6.46E-01 Xe-133m Ci 1.53E-03 3.82E-04

<LLD 1.91E-03 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 4.17E-01 8.50E-01 3.48E-01 1.62E+00

2. Iodines I-131 Ci 9.76E-08 2.41E-06

<LLD 2.50E-06 I-132 Ci 1.71E-05 2.90E-04

<LLD 3.07E-04 I-133 Ci 1.28E-07

<LLD

<LLD 1.28E-07 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci 1.73E-05 2.92E-04

<LLD 3.09E-04

PVNGS ARERR 2023 Page 49 Table 37: Units 1, 2, and 3 Gaseous Effluents-Batch - Particulates - Total by Unit Table 37:

Units 1, 2, and 3 Gaseous Effluents - Batch - Particulates - Total by Unit Nuclides Released Unit Unit 1 Unit 2 Unit 3 Total

3. Particulates Ag-110m Ci 4.54E-05

<LLD

<LLD 4.54E-05 Ba-140 Ci

<LLD

<LLD Br-82 Ci 5.30E-06 2.82E-05

<LLD 3.35E-05 Ce-141 Ci 1.08E-08

<LLD

<LLD 1.08E-08 Ce-144 Ci 4.53E-07 3.99E-05

<LLD 4.04E-05 Co-57 Ci

<LLD

<LLD Co-58 Ci 4.46E-06 3.17E-03

<LLD 3.18E-03 Co-60 Ci 1.01E-05 6.77E-04

<LLD 6.87E-04 Cr-51 Ci 1.32E-06 2.96E-03

<LLD 2.96E-03 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD 4.41E-07

<LLD 4.41E-07 Cs-138 Ci

<LLD

<LLD Fe-59 Ci

<LLD 6.56E-05

<LLD 6.56E-05 La-140 Ci 3.07E-08

<LLD

<LLD 3.07E-08 Mn-54 Ci 2.43E-07 9.61E-05

<LLD 9.64E-05 Mo-99 Ci 1.66E-07 1.34E-03

<LLD 1.34E-03 Nb-95 Ci 1.74E-07 9.30E-04

<LLD 9.31E-04 Os-191 Ci

<LLD

<LLD Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci

<LLD 8.20E-06

<LLD 8.20E-06 Sb-125 Ci

<LLD

<LLD Se-75 Ci

<LLD

<LLD Sn-113m Ci

<LLD

<LLD Sr-89 Ci Note 1 Note 1 Note 1 Note 1 Sr-90 Ci Note 1 Note 1 Note 1 Note 1 Tc-99m Ci 7.09E-09 3.61E-06

<LLD 3.62E-06 Te-123m Ci 4.76E-08 1.89E-06

<LLD 1.94E-06 Zn-65 Ci

<LLD

<LLD Zr-95 Ci

<LLD 6.59E-04

<LLD 6.59E-04 Total Ci 6.77E-05 9.98E-03

<LLD 1.00E-02

4. Tritium H-3 Ci 8.05E+02 1.01E+03 6.36E+02 2.46E+03 Note 1 - Not required for batch releases.

PVNGS ARERR 2023 Page 50 Table 38: Units 1, 2, and 3 Gaseous Effluents-Continuous and Batch - Fission Gases and Iodine - Total by Unit Table 38:

Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Fission Gases and Iodine - Total by Unit Nuclides Released Unit Unit 1 Unit 2 Unit 3 Total

1. Fission gases Ar-41 Ci 2.30E-01 3.88E-01 3.47E-01 9.65E-01 Kr-83m Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci 3.93E-05

<LLD

<LLD 3.93E-05 Kr-89 Ci

<LLD

<LLD Kr-90 Ci

<LLD

<LLD Xe-131m Ci 1.90E-03 4.50E-04

<LLD 2.35E-03 Xe-133 Ci 1.84E-01 4.62E-01 2.38E-04 6.46E-01 Xe-133m Ci 1.53E-03 3.82E-04

<LLD 1.91E-03 Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-137 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci 4.17E-01 8.50E+01 3.48E-01 1.62E+00

2. Iodines I-131 Ci 7.32E-07 3.45E-06

<LLD 4.19E-06 I-132 Ci 1.71E-05 2.90E-04

<LLD 3.07E-04 I-133 Ci 2.68E-06

<LLD

<LLD 2.68E-06 I-134 Ci

<LLD

<LLD I-135 Ci

<LLD

<LLD Total Ci 2.05E-05 2.93E-04

<LLD 3.14E-04

PVNGS ARERR 2023 Page 51 Table 39: Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Particulates - Total by Unit Table 39:

Units 1, 2, and 3 Gaseous Effluents - Continuous and Batch - Particulates - Total by Unit Nuclides Released Unit Unit 1 Unit 2 Unit 3 Total

3. Particulates Ag-110m Ci 4.60E-05 3.98E-07

<LLD 4.64E-05 Ba-140 Ci 2.87E-03

<LLD

<LLD 2.87E-03 Br-82 Ci 5.30E-06 2.82E-05

<LLD 3.35E-05 Ce-141 Ci 1.08E-08

<LLD

<LLD 1.08E-08 Ce-144 Ci 4.53E-07 3.99E-05

<LLD 4.04E-05 Co-57 Ci

<LLD

<LLD Co-58 Ci 1.32E-05 3.30E-03

<LLD 3.31E-03 Co-60 Ci 4.63E-05 7.66E-04

<LLD 8.12E-04 Cr-51 Ci 1.32E-06 3.22E-03

<LLD 3.22E-03 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD 4.41E-07

<LLD 4.41E-07 Cs-138 Ci 5.48E-04

<LLD

<LLD 5.48E-04 Fe-59 Ci

<LLD 6.67E-05

<LLD 6.67E-05 La-140 Ci 5.99E-04

<LLD

<LLD 5.99E-04 Mn-54 Ci 4.53E-07 1.07E-04

<LLD 1.07E-04 Mo-99 Ci 1.66E-07 1.34E-03

<LLD 1.34E-03 Nb-95 Ci 1.74E-07 1.07E-03

<LLD 1.07E-03 Os-191 Ci 2.56E-06 3.12E-07

<LLD 2.87E-06 Rb-88 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ru-106 Ci

<LLD

<LLD Sb-122 Ci

<LLD

<LLD Sb-124 Ci 4.09E-07 8.20E-06

<LLD 8.61E-06 Sb-125 Ci

<LLD

<LLD Se-75 Ci 1.12E-05

<LLD

<LLD 1.12E-05 Sn-113m Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Tc-99m Ci 7.09E-09 3.61E-06

<LLD 3.62E-06 Te-123m Ci 4.76E-08 1.89E-06

<LLD 1.94E-06 Zn-65 Ci

<LLD

<LLD Zr-95 Ci 5.67E-07 7.46E-04

<LLD 7.46E-04 Total Ci 4.15E-03 1.07E-02

<LLD 1.48E-02 Total > 8 days Ci 3.00E-03 1.07E-02

<LLD 1.37E-02

4. Tritium H-3 Ci 8.97E+02 1.09E+03 8.16E+02 2.81E+03

PVNGS ARERR 2023 Page 52 Table 40: Estimation of Total Percent Error Table 40: Estimation of Total Percent Error Noble Gases Iodines Particulates Tritium Error 25 25 25 25 Sample counting error 10 10 10 10 Counting system calibration error 5

5 5

5 Counting system source error 20 N/A N/A N/A Temperature/volume correction error 10 10 10 10 Process flow measuring device (1)

N/A 15 15 15 Sample flow measuring device N/A 5

N/A N/A Iodine collection efficiency error N/A N/A 10 N/A Plate-out error N/A N/A N/A 20 Bubbler collection efficiency error N/A N/A N/A 2

Sample volume transfer error (pipette)

N/A N/A N/A 2

Sample volume error (graduate)

Note 1 - % of full scale.

The estimated total error is calculated as follows:

Total Percent Error = (

+

+ +

)

Where En = Percent error associated with each contributing parameter.

Parameters contributing to errors in the measurement of gaseous effluents include: process flow rates, sample collection, analytical counting and tank volumes. The values in Table 40 (%) were used for error calculations.

Table 41: Effluent Monitoring Instrumentation: Out of Service Greater Than 30 Days Ins trumentation Out of Service Greater Than 30 Days Unit Instrument Dates of Inoperability Cause of Inoperability Explanation None

PVNGS ARERR 2023 Page 53 Table 42: Solid Waste Summary Table 42: Solid Waste Summary 1.0 Solid Waste Shipped Offsite for Burial or Disposal (not irradiated fuel)

Table 1.c: Irradiated Components Waste Class Volume (ft3)

Volume (m3)

Curies Shipped Percent Error None Table 1.a: Spent Resin, Filters, Sludge, Evaporator Bottoms, etc.

Waste Class Volume (ft3)

Volume (m3)

Curies Shipped Percent Error A

3.61E+03 1.02E+02 3.47E+01 2.50E+01 B

4.81E+02 1.36E+01 1.76E+02 2.50E+01 C

<LLD

<LLD N/A All 4.09E+03 1.16E+02 2.10E+02 2.50E+01 Table 1.b: Dry Compressible Waste, Contaminated Equipment, etc.

Waste Class Volume (ft3)

Volume (m3)

Curies Shipped Percent Error A

1.79E+04 5.07E+02 9.27E-01 2.50E+01 B

<LLD

<LLD N/A C

<LLD

<LLD N/A All 1.79E+04 5.07E+02 9.27E-01 2.50E+01 Table 1.d: Other Waste (Oil)

Waste Class Volume (ft3)

Volume (m3)

Curies Shipped Percent Error A

4.12E+03 1.17E+02 1.64E-02 2.50E+01 B

<LLD

<LLD N/A C

<LLD

<LLD N/A All 4.12E+03 1.17E+02 1.64E-02 2.50E+01 Table 1.e: Summary of All Waste Shipped Waste Class Volume (ft3)

Volume (m3)

Curies Shipped Percent Error A

2.56E+04 7.26E+02 3.56E+01 2.50E+01 B

4.81E+02 1.36E+01 1.76E+02 2.50E+01 C

<LLD

<LLD N/A All 2.61E+04 7.39E+02 2.11E+02 2.50E+01

PVNGS ARERR 2023 Page 54 2.0 Estimate of major nuclide composition Table 2.a: Spent Resin, Filters, Sludge, Evaporator Bottoms, etc.

Nuclide Percent Abundance Curies Percent Error H-3 6.52E-01 1.37E+00 2.50E+01 C-14 2.58E-01 5.42E-01 2.50E+01 Cr-51 2.11E-03 4.43E-03 2.50E+01 Mn-54 5.18E+00 1.09E+01 2.50E+01 Fe-55 1.89E+01 3.97E+01 2.50E+01 Fe-59 5.23E-04 1.10E-03 2.50E+01 Co-57 3.91E-01 8.23E-01 2.50E+01 Co-58 2.74E+00 5.76E+00 2.50E+01 Co-60 1.73E+01 3.64E+01 2.50E+01 Ni-59 3.27E-01 6.87E-01 2.50E+01 Ni-63 4.74E+01 9.96E+01 2.50E+01 Sr-89 8.08E-04 1.70E-03 2.50E+01 Sr-90 8.08E-02 1.70E-01 2.50E+01 Zr-95 6.18E-04 1.30E-03 2.50E+01 Nb-95 1.22E-03 2.56E-03 2.50E+01 Tc-99 6.13E-02 1.29E-01 2.50E+01 Ag-110m 2.06E-01 4.34E-01 2.50E+01 Sn-113 1.59E-01 3.35E-01 2.50E+01 Sb-124 8.37E-03 1.76E-02 2.50E+01 Sb-125 4.90E+00 1.03E+01 2.50E+01 Cs-137 1.42E+00 2.99E+00 2.50E+01 Ce-144 4.11E-02 8.65E-02 2.50E+01 Hf-181 2.32E-06 4.87E-06 2.50E+01 Pu-238 4.58E-04 9.63E-04 2.50E+01 Pu-239 1.26E-04 2.64E-04 2.50E+01 Pu-241 5.80E-03 1.22E-02 2.50E+01 Pu-242 6.33E-06 1.33E-05 2.50E+01 Am-241 4.19E-04 8.82E-04 2.50E+01 Am-243 5.99E-05 1.26E-04 2.50E+01 Cm-242 1.85E-04 3.90E-04 2.50E+01 Cm-243 3.30E-04 6.94E-04 2.50E+01 Total 2.10E+02 2.50E+01

PVNGS ARERR 2023 Page 55 Table 2.b: Dry Active Waste (DAW)

Nuclide Percent Abundance Curies Percent Error C-14 1.16E+00 1.08E-02 2.50E+01 Sc-46 1.26E-01 1.17E-03 2.50E+01 Cr-51 1.13E+01 1.05E-01 2.50E+01 Mn-54 2.02E+00 1.87E-02 2.50E+01 Fe-55 7.58E+00 7.03E-02 2.50E+01 Fe-59 3.72E-01 3.45E-03 2.50E+01 Co-57 5.78E-02 5.36E-04 2.50E+01 Co-58 1.38E+01 1.28E-01 2.50E+01 Co-60 2.34E+01 2.17E-01 2.50E+01 Ni-63 3.15E+00 2.92E-02 2.50E+01 Zn-65 4.54E-01 4.21E-03 2.50E+01 Sr-89 1.89E-02 1.75E-04 2.50E+01 Sr-90 1.38E-02 1.28E-04 2.50E+01 Zr-95 1.29E+01 1.20E-01 2.50E+01 Nb-95 2.19E+01 2.03E-01 2.50E+01 Tc-99 9.36E-04 8.68E-06 2.50E+01 Ag-110m 6.29E-02 5.83E-04 2.50E+01 Sn-113 2.78E-01 2.58E-03 2.50E+01 Sb-124 1.89E-01 1.75E-03 2.50E+01 Sb-125 6.91E-01 6.41E-03 2.50E+01 Te-123m 5.34E-03 4.95E-05 2.50E+01 Cs-137 4.46E-02 4.14E-04 2.50E+01 Ce-144 1.50E-01 1.39E-03 2.50E+01 Hf-181 2.73E-01 2.53E-03 2.50E+01 Pu-238 9.88E-06 9.16E-08 2.50E+01 Cm-242 1.11E-05 1.03E-07 2.50E+01 Total 9.27E-01 2.50E+01 Table 2.c: Irradiated Components Nuclide Percent Abundance Curies Percent Error None Table 2.d: Other Waste: Oil Nuclide Percent Abundance Curies Percent Error Co-60 5.02E-01 8.25E-05 2.50E+01 Ni-63 99.9E-01 1.63E-02 2.50E+01 Cs-137 3.78E-01 6.22E-05 2.50E+01 Total 1.64E-02 2.50E+01

PVNGS ARERR 2023 Page 56 Table 2.e: Summary of All Waste Shipped Nuclide Percent Abundance Curies Percent Error H-3 6.48E-01 1.37E+00 2.50E+01 C-14 2.62E-01 5.53E-01 2.50E+01 Sc-46 5.54E-04 1.17E-03 2.50E+01 Cr-51 5.16E-02 1.09E-01 2.50E+01 Mn-54 5.16E+00 1.09E+01 2.50E+01 Fe-55 1.88E+01 3.97E+01 2.50E+01 Fe-59 2.15E-03 4.55E-03 2.50E+01 Co-57 3.90E-01 8.23E-01 2.50E+01 Co-58 2.79E+00 5.89E+00 2.50E+01 Co-60 1.74E+01 3.67E+01 2.50E+01 Ni-59 3.25E-01 6.87E-01 2.50E+01 Ni-63 4.71E+01 9.96E+01 2.50E+01 Zn-65 1.99E-03 4.21E-03 2.50E+01 Sr-89 8.90E-04 1.88E-03 2.50E+01 Sr-90 8.09E-02 1.71E-01 2.50E+01 Zr-95 5.73E-02 1.21E-01 2.50E+01 Nb-95 9.75E-02 2.06E-01 2.50E+01 Tc-99 6.11E-02 1.29E-01 2.50E+01 Ag-110m 2.06E-01 4.35E-01 2.50E+01 Sn-113 1.60E-01 3.38E-01 2.50E+01 Sb-124 9.14E-03 1.93E-02 2.50E+01 Sb-125 4.92E+00 1.04E+01 2.50E+01 Te-123m 2.34E-05 4.95E-05 2.50E+01 Cs-137 1.42E+00 2.99E+00 2.50E+01 Ce-144 4.16E-02 8.79E-02 2.50E+01 Hf-181 1.20E-03 2.54E-03 2.50E+01 Pu-238 4.56E-04 9.63E-04 2.50E+01 Pu-239 1.25E-04 2.64E-04 2.50E+01 Pu-241 5.77E-03 1.22E-02 2.50E+01 Pu-242 6.30E-06 1.33E-05 2.50E+01 Am-241 4.17E-04 8.82E-04 2.50E+01 Am-243 5.96E-05 1.26E-04 2.50E+01 Cm-242 1.85E-04 3.90E-04 2.50E+01 Cm-243 3.29E-04 6.94E-04 2.50E+01 Total 2.11E+02 2.50E+01

PVNGS ARERR 2023 Page 57 3.0 Irradiated Fuel Shipments None.

4.0 Supplemental Information Table 4.a: Shipment Mode and Location Number of Shipments Mode of Transport Destination 10 Highway EnergySolutions, UT 23 Highway Waste Control Specialists, TX 6

Highway Perma-Fix of Florida Table 4.b: Shipping Container Characteristics Number of Containers Type of Waste Container Type Solidification Agent 16 DAW 20' Sealand None 1

DAW 10' Sealand None 4

DAW Metal Liner None 10 DAW Intermodal None 8

Resin Polyethylene Liner None 6

Concentrates Metal Liner None 16 Other: Oil Metal Liner None 1

Other: S/G Cleaning Solution ISO Tank None Table 4.c: Container Volume in m3 by Waste Class Type of Waste Class A Class B Class C Spent Resin, Filters, Sludge, Evaporator bottoms, etc.

1.02E+02 1.36E+01

<LLD DAW 5.07E+02

<LLD

<LLD Irradiated Components

<LLD

<LLD Other Waste: Oil 1.17E+02

<LLD

PVNGS ARERR 2023 Page 58 Table 4.d: Container Activity in Ci by Waste Class Type of Waste Class A Class B Class C Spent Resin, Filters, Sludge, Evaporator bottoms, etc.

3.47E+01 1.76E+02

<LLD DAW 9.27E+01

<LLD

<LLD Irradiated Components

<LLD

<LLD Other Waste: Oil 1.64E-02

<LLD

<LLD Table 4.e: Principal Radionuclides Refer to Tables 2.a - 2.e.

Table 4.f Source of Waste and Processing Employed Type of Waste Source Spent Resin, Filters, Sludge, Evaporator bottoms, etc.

Mechanical filters: no processing; Concentrates as a liquid: no processing; Resin: dewatered prior to shipment.

DAW Non-compacted DAW: no processing employed Irradiated Components Irradiated Components: no processing employed Other Waste: Oil, S/G Cleaning Solution Oil: no processing employed; S/G Cleaning Solution: no processing employed.

PVNGS ARERR 2023 Page 59 Table 4.g Type of Container Type of Waste Type of Container Spent Resin, Filters, Sludge, Evaporator bottoms, etc.

(18) General Design Containers DAW (23) General Design Containers Irradiated Components N/A Other Waste: Oil, S/G Cleaning Solution (8) General Design Containers Table 4.h Solidification Agent or Absorbent Type of Waste Solidification Agent/Absorbent Spent Resin, Filters, Sludge, Evaporator bottoms, etc.

No solidification agents or absorbents used to process material DAW No solidification agents or absorbents used to process material Irradiated Components N/A Other Waste: Oil, Metal, S/G Cleaning Solution No solidification agents or absorbents used to process material

PVNGS ARERR 2023 Page 60 APPENDIX B: DOSE CALCULATIONS GASEOUS EFFLUENT DOSE CALCULATIONS Doses to the maximum individual and the surrounding population resulting from the release of radioactive material in gaseous effluents from the Palo Verde Nuclear Generating Station were calculated using the GASPAR computer program. The radionuclides considered in the dose calculations were Tritium, Iodine-131, Iodine-132, Iodine-133, Iodine-135, all noble gases, and particulates having a half-life greater than eight days and for which dose factors are contained in NUREG-0172. Locations selected for individual dose calculations included for each sector, the site boundary, and within five miles, if present, the nearest residence, the nearest garden, and the nearest milk animal. GASPAR implements the radiological dose models of Regulatory Guide 1.109 to determine the radiation exposure to man from four principal atmospheric exposure pathways:

plume, ground deposition, inhalation, and ingestion. Doses to the maximum individual and the population were calculated as a function of age group and pathway for significant body organs.

The Energy Information Center was relocated to an offsite location in 2011; however, Table 43 provides doses to the historical location of the Energy Information Center for comparison purposes.

Table 44 presents the Integrated Population Dose.

Table 45 summarizes the individual doses and compares the result to PVNGS ODCM Requirement limits. The site boundary and residence locations for which data are presented represent the highest annual doses.

Based on results obtained by placing TLDs on the site boundary in each sector, the net dose for this reporting period, from direct-radiation, (plume and ground deposition) from all three units was indistinguishable from preoperational values of 8 - 14 R/hr. (17 - 30 mR/Std Qtr.).

LIQUID EFFLUENT DOSE CALCULATIONS There were no liquid effluents associated with the operation of this facility.

DOSE CALCULATION MODELS The GASPAR computer code was used to evaluate the radiological consequences of the routine release of gaseous effluents. GASPAR implements the dose calculation methodologies of Regulatory Guide 1.109, Revision 1.

Source terms for each quarter are combined with station-specific demographic data and each quarters atmospheric diffusion estimates for gaseous dose calculations.

Atmospheric diffusion estimates are generated by the XOQDOQ computer code using onsite meteorological data as input. Additional input to GASPAR includes the following site-specific data:

0 to 5 mile nearest residence, milk animal and garden in each of the 16 compass sectors, based on the 2023 Land Use Census.

PVNGS ARERR 2023 Page 61 0 to 10 mile population from the PVNGS Emergency Plan, Rev 75.

The 10 to 50 mile population distribution from the PVNGS UFSAR, Figure 2.1-12.

The population distribution of metropolitan Phoenix, greater than 50 miles from PVNGS, is conservatively included in the 40 to 50 mile sectors Absolute humidity of 6 g/m3 from the PVNGS UFSAR, Table 2.3-16.

The fraction of the year that vegetables are grown (0.667) from the PVNGS ER-OL, Section 2.1.3.4, Table 2.1-8.

The fraction of daily feed derived from pasture while on pasture (0.35) and length of grazing season for milk animals beyond 5 miles (0.75) from the PVNGS ER-OL, Section 2.1.3.4.3.

The fraction of daily feed derived from pasture while on pasture (0.05) and length of grazing season for meat animals (0.25) from the PVNGS ER-OL, Section 2.1.3.4.4.

There were nine (9) sectors reported as containing milk animal (goat or cow) locations within five (5) miles. For calculation purposes these milk animals are assumed to be fed 100% on pasture grass during the year.

Other values used for input to GASPAR are default values from Regulatory Guide 1.109, Rev. 1.

PVNGS ARERR 2023 Page 62 Table 43: Doses to Special Location Table 43: Doses to Special Location (mrem)

T.BODY GI-TRACT BONE LIVER KIDNEY THYROID LUNG SKIN 1ST QUARTER ADULT 1.00E+00 1.00E+00 1.19E-03 1.00E+00 1.00E+00 1.00E+00 1.00E+00 1.01E+00 TEEN 1.01E+00 1.01E+00 1.19E-03 1.01E+00 1.01E+00 1.01E+00 1.01E+00 1.01E+00 CHILD 8.94E-01 8.95E-01 1.19E-03 8.94E-01 8.94E-01 8.94E-01 8.95E-01 8.95E-01 INFANT 5.15E-01 5.15E-01 1.19E-03 5.15E-01 5.15E-01 5.15E-01 5.15E-01 5.15E-01 2ND QUARTER ADULT 4.27E-01 4.27E-01 1.58E-02 4.27E-01 4.27E-01 4.27E-01 4.31E-01 4.30E-01 TEEN 4.29E-01 4.29E-01 1.58E-02 4.29E-01 4.29E-01 4.29E-01 4.35E-01 4.32E-01 CHILD 3.81E-01 3.81E-01 1.59E-02 3.81E-01 3.81E-01 3.81E-01 3.86E-01 3.84E-01 INFANT 2.26E-01 2.26E-01 1.58E-02 2.26E-01 2.26E-01 2.26E-01 2.29E-01 2.29E-01 1ST SEMI-ANNUAL ADULT 1.43E+00 1.43E+00 1.70E-02 1.43E+00 1.43E+00 1.43E+00 1.44E+00 1.44E+00 TEEN 1.44E+00 1.44E+00 1.70E-02 1.44E+00 1.44E+00 1.44E+00 1.45E+00 1.44E+00 CHILD 1.28E+00 1.28E+00 1.70E-02 1.28E+00 1.28E+00 1.28E+00 1.28E+00 1.28E+00 INFANT 7.41E-01 7.41E-01 1.70E-02 7.41E-01 7.41E-01 7.41E-01 7.44E-01 7.44E-01 3RD QUARTER ADULT 2.79E-01 2.79E-01 8.97E-04 2.79E-01 2.79E-01 2.79E-01 2.79E-01 2.79E-01 TEEN 2.80E-01 2.80E-01 8.98E-04 2.80E-01 2.80E-01 2.80E-01 2.80E-01 2.81E-01 CHILD 2.48E-01 2.48E-01 8.98E-04 2.48E-01 2.48E-01 2.48E-01 2.48E-01 2.49E-01 INFANT 1.43E-01 1.43E-01 8.97E-04 1.43E-01 1.43E-01 1.43E-01 1.43E-01 1.43E-01 4TH QUARTER ADULT 8.07E-01 8.08E-01 1.79E-03 8.07E-01 8.07E-01 8.07E-01 8.10E-01 8.07E-01 TEEN 8.12E-01 8.13E-01 1.83E-03 8.12E-01 8.12E-01 8.12E-01 8.17E-01 8.13E-01 CHILD 7.18E-01 7.18E-01 1.88E-03 7.18E-01 7.18E-01 7.18E-01 7.23E-01 7.19E+00 INFANT 4.14E-01 4.14E-01 1.83E-03 4.14E-01 4.14E-01 4.14E-01 4.18E-01 1.25E-01 2ND SEMI-ANNUAL ADULT 1.09E+00 1.09E+00 2.69E-03 1.09E+00 1.09E+00 1.09E+00 1.09E+00 1.09E+00 TEEN 1.09E+00 1.09E+00 2.73E-03 1.09E+00 1.09E+00 1.09E+00 1.10E+00 1.09E+00 CHILD 9.67E-01 9.67E-01 2.78E-03 9.67E-01 9.67E-01 9.67E-01 9.72E-01 9.68E-01 INFANT 5.57E-01 5.57E-01 2.73E-03 5.57E-01 5.57E-01 5.57E-01 5.61E-01 2.68E-01 ANNUAL ADULT 2.52E+00 2.52E+00 1.97E-02 2.52E+00 2.52E+00 2.52E+00 2.52E+00 2.52E+00 TEEN 2.53E+00 2.53E+00 1.97E-02 2.53E+00 2.53E+00 2.53E+00 2.54E+00 2.54E+00 CHILD 2.24E+00 2.24E+00 1.98E-02 2.24E+00 2.24E+00 2.24E+00 2.25E+00 2.25E+00 INFANT 7.03E-01 7.03E-01 8.39E-03 7.03E-01 7.03E-01 7.03E-01 7.04E-01 6.27E-01

PVNGS ARERR 2023 Page 63 Table 44: Integrated Population Dose Table 44: Integrated Population Dose ()

January to March Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 1.12E-04 1.12E-04 1.12E-04 1.12E-04 1.12E-04 1.12E-04 1.12E-04 2.04E-04 0.00%

0.00%

60.48%

0.00%

Ground 7.35E-05 7.35E-05 7.35E-05 7.35E-05 7.35E-05 7.35E-05 7.35E-05 8.65E-05 0.00%

0.00%

39.52%

0.00%

Inhalation 4.46E+0 0

4.46E+00 0.00E-00 4.46E+00 4.46E+00 4.46E+00 4.46E+00 4.46E+00 38.62%

38.62%

0.00%

38.62%

Vegetation 6.13E+0 0

6.13E+00

<LLD 6.13E+00 6.13E+00 6.13E+00 6.13E+00 6.13E+00 53.03%

53.03%

00.00%

53.03%

Cow Milk 6.25E-01 6.25E-01

<LLD 6.25E-01 6.25E-01 6.25E-01 6.25E-01 6.25E-01 5.64%

5.64%

00.00%

5.64%

Meat 3.11E-01 3.11E-01

<LLD 3.11E-01 3.11E-01 3.11E-01 3.11E-01 3.11E-01 2.69%

2.69%

00.00%

2.69%

Total 1.16E+0 1

1.16E+01 1.86E-04 1.16E+01 1.16E+01 1.16E+01 1.16E+01 1.16E+01 Per Capita Dose (rem) (1) 5.92E-06 5.92E-06 9.49E-11 5.92E-06 5.92E-06 5.92E-06 5.92E-06 5.92E-06 April through June Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 1.04E-04 1.04E-04 1.04E-04 1.04E-04 1.04E-04 1.04E-04 1.04E-04 1.85E-04 0.0%

0.0%

0.46%

0.0%

Ground 2.17E-02 2.17E-02 2.17E-02 2.17E-02 2.17E-02 2.17E-02 2.17E-02 2.55E-02 0.21%

0.21%

95.92%

0.21%

0.25%

Inhalation 5.23E+00 5.23E+00 8.05E+04 5.23E+00 5.23E+00 5.23E+00 5.26E+00 5.23E+00 50.88%

50.88%

3.56%

50.88%

51.03%

50.86%

Vegetation 4.11E+00 4.11E+00 1.30E-05 4.11E+00 4.11E+00 4.11E+00 4.11E+00 4.11E+00 40.00%

40.00%

0.06%

40.00%

39.87%

39.98%

Cow Milk 7.50E-01 7.50E-01 7.76E-07 7.50E-01 7.50E-01 7.50E-01 7.50E-01 7.50E-01 7.30%

7.29%

0.00%

7.30%

7.27%

7.29%

Meat 1.66E-01 1.66E-01 3.11E-07 1.66E-01 1.66E-01 1.66E-01 1.66E-01 1.66E-01 1.61%

1.61%

0.00%

1.61%

Total 1.03E+01 1.03E+01 2.26E-02 1.03E+01 1.03E+01 1.03E+01 1.03E+01 1.03E+01 Per Capita Dose (rem) (1) 5.26E-06 5.26E-06 1.15E-08 5.26E-06 5.26E-06 5.26E-06 5.26E-06 5.26E-06

PVNGS ARERR 2023 Page 64 Table 44: Integrated Population Dose January through June Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 2.17E-04 2.17E-04 2.17E-04 2.17E-04 2.17E-04 2.17E-04 2.17E-04 3.89E-04 0.00%

0.00%

0.95%

0.00%

Ground 2.18E-02 2.18E-02 2.18E-02 2.18E-02 2.18E-02 2.18E-02 2.18E-02 2.56E-02 0.10%

0.10%

95.46%

0.10%

0.12%

Inhalation 9.69E+00 9.70E+00 8.05E-05 9.69E+00 9.69E+00 9.69E+00 9.72E+00 9.69E+00 44.39%

44.40%

3.53%

44.40%

44.39%

44.48%

44.39%

Vegetation 1.02E+01 1.02E+01 1.30E-05 1.02E+01 1.02E+01 1.02E+01 1.02E+01 1.02E+01 46.90%

41.11%

0.07%

46.90%

46.83%

46.89%

Cow Milk 1.40E+00 3.53E-01 2.75E-07 3.53E-01 1.40E+00 1.40E+00 1.40E+00 1.40E+00 6.42%

6.51%

0.00%

6.51%

6.42%

6.41%

6.42%

Meat 4.77E-01 8.77E-01 3.11E-07 4.77E-01 4.77E-01 4.77E-01 4.77E-01 4.77E-01 2.19%

2.19%

0.00%

2.19%

2.18%

Total 2.18E+01 2.18E+01 2.28E-02 2.18E+01 2.18E+01 2.18E+01 2.19E+01 2.18E+01 Per Capita Dose (rem) (1) 1.11E-05 1.11E-05 1.16E-08 1.11E-05 1.11E-05 1.11E-05 1.12E-05 1.11E-05 July through September Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 1.29E-04 1.29E-04 1.29E-04 1.29E-04 1.29E-04 1.29E-04 1.29E-04 2.30E-04 0.00%

0.00%

15.66%

0.00%

0.01%

Ground 6.94E-04 6.94E-04 6.94E-04 6.94E-04 6.94E-04 6.94E-04 6.94E-04 8.15E-04 0.02%

0.02%

84.14%

0.02%

Inhalation 1.79E+00 1.79E+00 8.98E-07 1.79E+00 1.79E+00 1.79E+00 1.79E+00 1.79E+00 43.81%

43.81%

0.11%

43.81%

43.82%

43.81%

Vegetation 1.98E+00 1.98E+00 3.41E-07 1.98E+00 1.98E+00 1.98E+00 1.98E+00 1.98E+00 48.37%

48.37%

0.04%

48.37%

48.36%

48.37%

Cow Milk 2.31E-01 2.31E-01 3.77E-07 2.31E-01 2.31E-01 2.31E-01 2.31E-01 2.31E-01 5.64%

5.65%

0.05%

5.64%

Meat 8.81E-02 8.81E-02 1.28E-08 8.81E-02 8.81E-02 8.81E-02 8.81E-02 8.81E-02 2.15%

2.15%

0.00%

2.15%

Total 4.09E+00 4.09E+00 8.25E-04 4.09E+00 4.09E+00 4.09E+00 4.09E+00 4.09E+00 Per Capita Dose (rem) (1) 2.09E-06 2.09E-06 4.21E-10 2.09E-06 2.09E-06 2.09E-06 2.09E-06 2.09E-06

PVNGS ARERR 2023 Page 65 Table 44 Integrated Population Dose October through December Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 6.11E-05 6.11E-05 6.11E-05 6.11E-05 6.11E-05 6.11E-05 6.11E-05 1.09E-04 0.00%

0.00%

3.59%

0.00%

Ground 5.14E-04 5.14E-04 5.14E-04 5.14E-04 5.14E-04 5.14E-04 5.14E-04 6.03E-04 0.00%

0.00%

30.19%

0.00%

Inhalation 5.00E+00 5.00E+00 3.93E-04 5.00E+00 5.00E+00 5.00E+00 5.00E+00 5.00E+00 39.58%

39.58%

23.08%

39.58%

39.64%

38.58%

Vegetation 6.59E+00 6.59E+00 7.30E-04 6.59E+00 6.59E+00 6.59E+00 6.59E+00 6.59E+00 52.17%

52.16%

42.86%

52.17%

52.11%

52.16%

Cow Milk 7.24E-01 7.24E-01 4.61E-06 7.24E-01 7.24E-01 7.24E-01 7.24E-01 7.24E-01 5.73%

5.73%

0.27%

5.73%

Meat 3.19E-01 3.19E-01 2.26E-07 3.19E-01 3.19E-01 3.19E-01 3.19E-01 3.19E-01 2.52%

2.52%

0.01%

2.52%

Total 1.26E+01 1.26E+01 1.70E-03 1.26E+01 1.26E+01 1.26E+01 1.26E+01 1.26E+01 Per Capita Dose (rem) (1) 6.43E-06 6.43E-06 8.68E-10 6.43E-06 6.43E-06 6.43E-06 6.43E-06 6.43E-06 July through December Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 1.90E-04 1.90E-04 1.90E-04 1.90E-04 1.90E-04 1.90E-04 1.90E-04 3.39E-04 0.00%

0.00%

7.53%

0.00%

0.0%

0.00%

Ground 1.21E-03 1.21E-03 1.21E-03 1.21E-03 1.21E-03 1.21E-03 1.21E-03 1.42E-03 0.01%

0.01%

47.80%

0.01%

Inhalation 6.79E+00 6.79E+00 3.94E-04 6.79E+00 6.79E+00 6.79E+00 6.81E+00 6.79E+00 40.61%

40.62%

15.58%

40.61%

40.66%

40.61%

Vegetation 8.57E+00 8.57E+00 7.30E-04 8.57E+00 8.57E+00 8.57E+00 8.57E+00 8.57E+00 51.24%

51.23%

28.89%

51.24%

51.20%

51.24%

Cow Milk 9.55E-01 9.55E-01 4.98E-06 9.55E-01 9.55E-01 9.55E-01 9.55E-01 9.55E-01 5.71%

5.71%

0.20%

5.71%

Meat 4.07E-01 4.07E-01 2.39E-07 4.07E-01 4.07E-01 4.07E-01 4.07E-01 4.07E-01 2.43%

2.43%

0.01%

2.43%

Total 1.67E+01 1.67E+01 2.53E-03 1.67E+01 1.67E+01 1.67E+01 1.67E+01 1.67E+01 Per Capita Dose (rem) (1) 8.52E-06 8.52E-06 1.29E-09 8.52E-06 8.52E-06 8.52E-06 8.52E-06 8.52E-06

PVNGS ARERR 2023 Page 66 Table 44: Integrated Population Dose January through December Pathway Total Body GI-Tract Bone Liver Kidney Thyroid Lung Skin Plume 4.07E-04 4.07E-04 4.07E-04 4.07E-04 4.07E-04 4.07E-04 4.07E-04 7.28E-04 0.00%

0.00%

1.61%

0.00%

Ground 2.30E-02 2.30E-02 2.30E-02 2.30E-02 2.30E-02 2.30E-02 2.30E-02 2.70E-02 0.06%

0.06%

90.70%

0.06%

0.07%

Inhalation 1.65E+01 1.65E+01 1.20E-03 1.65E+01 1.65E+01 1.65E+01 1.65E+01 1.65E+01 42.75%

42.76%

4.74%

42.75%

42.82%

42.75%

Vegetation 1.88E+01 1.88E+01 7.34E-04 1.88E+01 1.88E+01 1.88E+01 1.88E+01 1.88E+01 48.78%

48.78%

2.94%

48.78%

48.72%

48.77%

Cow Milk 2.36E+00 2.36E+00 5.76E-06 2.36E+00 2.36E+00 2.36E+00 2.36E+00 2.36E+00 6.11%

6.11%

0.02%

6.11%

Meat 8.84E-01 8.84E-01 5.50E-07 8.84E-01 8.84E-01 8.84E-01 8.84E-01 8.84E-01 2.29%

2.29%

0.00%

2.29%

Total 3.86E+01 3.86E+01 2.53E-02 3.86E+01 3.86E+01 3.86E+01 3.86E+01 3.86E+01 Per Capita Dose (rem) (1) 1.97E-05 1.97E-05 1.29E-08 1.97E-05 1.97E-05 1.97E-05 1.97E-05 1.97E-05 Note 1 - Person-rem total divided by 50-mile population of 4,716,000.

PVNGS ARERR 2023 Page 67

PVNGS ARERR 2023 Page 68 Table 45: Summary of Individual Doses APPENDIX C: NEI 07-07 GROUNDWATER PROTECTION INITIATIVE SAMPLING

PVNGS ARERR 2023 Page 69 Figure 1. Onsite Well Locations and Groundwater Contours of March 2023

PVNGS ARERR 2023 Page 70 Figure 2. Onsite Well Locations and Groundwater Contours of September 2023

PVNGS ARERR 2023 Page 71 Table 46: 2023 NEI 07-07 Ground Water Protection Initiative PVNGS Well Data Monitoring Well ID Sample ID Sample Date Radionuclide Concentration (pCi/L)

APP-10 PV-APP-10-0323 03/22/2023 Tritium

<359 APP-10 PV-APP-10-0522 06/27/2023 Tritium

<354 APP-10 PV-APP-10-0923 09/12/2023 Tritium

<425 APP-10 PV-APP-10-1123 11/14/2023 Cesium-134

<2.54 APP-10 PV-APP-10-1123 11/14/2023 Cesium-137

<6.09 APP-10 PV-APP-10-1123 11/14/2023 Cobalt-60

<5.95 APP-10 PV-APP-10-1123 11/14/2023 Tritium

<358 APP-12 PV-APP-12-0323 03/22/2023 Tritium

<359 APP-12 PV-APP-12-0623 06/27/20023 Tritium

<355 APP-12 PV-APP-12-0923 09/12/2023 Tritium

<424 APP-12 PV-APP-12-1123 11/14/2023 Cesium-134

<5.29 APP-12 PV-APP-12-1123 11/14/2023 Cesium-137

<8.52 APP-12 PV-APP-12-1123 11/14/2023 Cobalt-60

<8.76 APP-12 PV-APP-12-1123 11/14/2023 Tritium

<358 APP-15 PV-APP-15-1120 (1)

Cesium-134 (1)

APP-15 PV-APP-15-1120 (1)

Cesium-137 (1)

APP-15 PV-APP-15-1120 (1)

Cobalt-60 (1)

APP-15 PV-APP-15-1120 (1)

Tritium (1)

APP-22 PV-APP-22-1123 11/13/2023 Cesium-134

<5.21 APP-22 PV-APP-22-1123 11/13/2023 Cesium-137

<6.27 APP-22 PV-APP-22-1123 11/13/2023 Cobalt-60

<6.05 APP-22 PV-APP-22-1123 11/13/2023 Tritium

<358 APP-9 PV-APP-9-0323 03/22/2023 Tritium

<360 APP-9 PV-APP-9-0623 06/27/2023 Tritium

<352 APP-9 PV-APP-9-0923 09/12/2023 Tritium

<424 APP-9 PV-APP-9-1123 11/14/2023 Cesium-134

<5.15 APP-9 PV-APP-9-1123 11/14/2023 Cesium-137

<7.56 APP-9 PV-APP-9-1123 11/14/2023 Cobalt-60

<6.55 APP-9 PV-APP-9-1123 11/14/2023 Tritium

<354 PV-14H PV-PV-14H-1123 11/13/2023 Cesium-134

<2.72 PV-14H PV-PV-14H-1123 11/13/2023 Cesium-137

<3.62 PV-14H PV-PV-14H-1123 11/13/2023 Cobalt-60

<3.18 PV-14H PV-PV-14H-1123 11/13/2023 Tritium

<358 PV-34H PV-PV-34H-1223 (1)

Cesium-134 (1)

PV-34H PV-PV-34H-1223 (1)

Cesium-137 (1)

PV-34H PV-PV-34H-1223 (1)

Cobalt-60 (1)

PV-34H PV-PV-34H-1223 (1)

Tritium (1)

PV-R2AR PV-PV-R2AR-0623 06/28/2023 Cesium-134

<4.94 PV-R2AR PV-PV-R2AR-0623 06/28/2023 Cesium-137

<8.49 PV-R2AR PV-PV-R2AR-0623 06/28/2023 Cobalt-60

<9.15 PV-R2AR PV-PV-R2AR-0623 06/28/2023 Tritium

<355 (1) - Pump failure, no sample obtained.

PVNGS ARERR 2023 Page 72 Table 46: 2023 NEI 07-07 Ground Water Protection Initiative PVNGS Well Data Monitoring Well ID Sample ID Sample Date Radionuclide Concentration (pCi/L)

PV-R2AR PV-PV-R2AR-1123 11/15/2023 Cesium-134

<5.31 PV-R2AR PV-PV-R2AR-1123 11/15/2023 Cesium-137

<8.52 PV-R2AR PV-PV-R2AR-1123 11/15/2023 Cobalt-60

<7.84 PV-R2AR PV-PV-R2AR-1123 11/15/2023 Tritium

<357 APP-4R PV-APP-4R-1123 11/13/2023 Cesium-134

<6.61 APP-4R PV-APP-4R-1123 11/13/2023 Cesium-137 8.18 APP-4R PV-APP-4R-1123 11/13/2023 Cobalt-60

<5.18 APP-4R PV-APP-4R-1123 11/13/2023 Tritium

<360

PVNGS ARERR 2023 Page 73 APPENDIX D: ADJUSTED 2023 PERMITS

PVNGS ARERR 2023 Page 74 Table 47:

Table 47: Adjusted Permits Permit Reason for Adjustment Various Batch permits with greater than 216 hours0.0025 days 0.06 hours 3.571429e-4 weeks 8.2188e-5 months were considered continuous releases.

20232032 The tritium activity listed on Plant Vent permit 20232030 was excluded because it was the result of BAC operations accounted for on BAC batch permit 20232032.

20232048 The Ar-41 activity listed on batch permit 20232048 was adjusted from 12.45 Curies to 1.87E-1 Curies to account for 11.11 hours1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months of decay (reactor shutdown to release start) and one volume of containment 2.6E6 ft3).

20232051 Activity on Plant Vent Permit 20232051 was excluded because it was accounted for on Refueling Purge Permit 20232053.

20232058 Activity on Refueling Purge Permit 20232058 was excluded because it was accounted for on Plant Vent Permit 20232057.

20232061 Activity on Refueling Purge Permit 20232061 was excluded because it was accounted for on Plant Vent Permit 20232060.

ML24312A315

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