BVY 21-015, 2020 Annual Radiological Environmental Operating Report
ML21147A157 | |
Person / Time | |
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Site: | Vermont Yankee ![]() |
Issue date: | 05/12/2021 |
From: | Daniels C Northstar Decommissioning Holdings |
To: | Document Control Desk, Office of Nuclear Reactor Regulation |
References | |
BVY 21-015 | |
Download: ML21147A157 (86) | |
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NorthStar Nuclear Decommissioning Co., LLC Vermont Yankee Nuclear Power Station 320 Governor Hunt Rd .
North Star Vernon, VT 05354 802-451-5354 Corey R. Daniels ISFSI Senior Manager 10 CFR 50, Appx I, SEC IV.B.2 and IV.B.3 BVY 21-015 May 12, 2021 ATTN: Document Control Desk, U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
2020 Annual Radiological Environmental Operating Report Vermont Yankee Nuclear Power Station Docket No. 50-271 License No. DPR-28
Dear Sir or Madam:
In accordance with 10 CFR 50, Appendix I, Sections IV.B.2 and IV.B.3 and the Vermont Yankee Off-site Dose Calculation Manual, please find enclosed a copy of the 2020 Annual Radiological Environmental Operating Report.
This letter contains no new regulatory commitments.
Should you have any questions concerning this letter, or require additional information, please contact Mr. Thomas B. Silko at (802) 451-5354, Ext 2506.
Sincerely, CRD/tbs
Enclosure:
Annual Radiological Environmental Operating Report for 2020.
BVY 21-015 / Page 2 of 2 cc: Regional Administrator, Region 1 U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd, Suite 100 King of Prussia, PA 19406-2713 Ms. June Tierney, Commissioner Vermont Department of Public Service 112 State Street - Drawer 20 Montpelier, Vermont 05602-2601 Massachusetts Department of Public Health Director, Radiation Control Program 529 Main Street, Suite 1 M2A Charlestown, MA 02129 Jim Montgomery, Commissioner Massachusetts Department of Conservation and Recreation 251 Causeway Street Boston, MA 02114
BVY 21-015 Docket No. 50-271 Enclosure Vermont Yankee Nuclear Power Station Annual Radiological Environmental Operating Report for 2020 (83 pages excluding this cover sheet)
BVY 21 -015 / Enclosure NORTHSTAR - VERMONT YANKEE Vermont Yankee Nuclear Power Station ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT Year 2020 1
Prepared by: _ _ _ __ f. __.__'Jf
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- - - -- -- -' 5/3/21 Pete Hollenbeck, Radiation Safety & Control Services Date Reviewed by:. _ _ _ _--=~ ..:::::;,~ ~- - - - - -- - -/ 5 .. '
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Date Date
BVY 21-015 / Enclosure TABLE OF CONTENTS
- 1. INTRODUCTION .... ........................................ ... ...... ............................. ... .. ..................... ... 4
- 2. BACKGROUND RADIOACTIVITY ................................................................. ....... ... .. .... 5 2.1 Naturally Occurring Background Radioactivity ........................... .. ................................. 5 2.2 Man-Made Background Radioactivity ............ ..... ... .......................... ...... ... ..... .. .. .... ... ..... . 6
- 3. GENERAL PLANT AND SITE INFORMATION ............................................................. 7
- 4. PROGRAM DESIGN ................ .. .................. ...... ................ ................. ...... ........... ... ........... 7 4.1 Monitoring Zones ......... .... .... ....... ........ ......... .. ........................... ......... .............................. 8 4.2 Pathways Monitored ..... ........ ..................... ......... .. ............... .. ... ....... ....... ... ....... ... ............ . 9 4.3 Descriptions of Monitoring Programs ... .... ..... ..... ...... .. .. .......... ...... ... ... .......... .. .... ... .... ..... . 9 4.3.1 Air Sampling ......... .......... ............. ..................................................................... ........................ 9 4.3.2 Charcoal Cartridge (Radioiodine) Sampling ...................... .......... ........................................... 10 4.3.3 River Water Sampling ........................................ ...... ...................... ......................................... 10 4.3.4 Ground Water (Deep Well Potable Water) Sampling ............................................................. 10 4.3.5 Sediment Sampling ....................... ................................................._. ........................................ 11 4.3.6 Milk Sampling ................................................................................................. ....................... 11 4.3.7 Silage (Chopped Corn or Grass) Sampling ............................................................................. 11 4.3.8 Mixed Grass Sampling ........................... ................... .............. ... ................ ............. ................ 11 4.3.9 Fish Sampling .. ............................................................................... ....... ................................. 11 4.3.10 TLD Monitoring .............................................. ........................ ............................................ 12
- 5. RADIOLOGICAL DATA
SUMMARY
TABLES ........................................................... 25
- 6. ANALYSIS OF ENVIRONMENTAL RESULTS ............. ..... ...... .. .. ..... ... ...... .................. 40 6.1 Sampling Program Deviations ............................................ ........... .... .... ........................ 40
- 7. Quality Assurance Program ....... .. ......... ............. .............................. ..... ...... .... .. ...... ....... .... 61 7 .1 Environmental Dosimetry Company Laboratory ... ............................................. ......... .. 61 7.2 Teledyne Brown Engineering Laboratory-Environmental Services (TBE-ES) .... .. ... . 75 7.2.1 Operational Quality Control Scope ................................ ............. ........... ......................... ........ 75 7.2.2 Analytical Services Quality Control Synopsis ................. .................... ......... .. ........................ 76
- 8. LAND USE CENSUS ..... ..... .... ............. ..... ... ..... ................. ............................................... 79
- 9.
SUMMARY
....................................................................................................................... 82
- 10. REFERENCES ........... .... ....... ....... ....... ... ...... ..................................................................... 83 VY 2020 AREOR Page 2 of 83
BVY 21-015 / Enclosure LIST OF TABLES Table 4.1 Radiological Environmental Monitoring Program ....................................................... 13 Table 4.2 Radiological Environmental Monitoring Locations (Non-TLD) In 2020 .................... 15 Table 4.3 Radiological Environmental Monitoring Locations (TLD) In 2020 ............................ 16 Table 4.4 Environmental Lower Limit Of Detection (LLD) Sensitivity Requirements ............... 17 Table 4.5 Reporting Levels for Radioactivity Concentrations in Environmental Samples .......... 18 Table 5.1 Sample Medium Analyses ............................................................................................ 27 Table 5.2 Environmental TLD Data Summary ............................................................................. 38 Table 5.3 Environmental TLD Measurements 2020 ..................................................................... 39 Table 6.1 Summary of Air Compressor Condensate and Manhole Water Tritium Concentrations*