ML20303A219
| ML20303A219 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 10/29/2020 |
| From: | Mark D. Sartain Dominion Energy Nuclear Connecticut |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 20-387 | |
| Download: ML20303A219 (4) | |
Text
Dominion Energy Nuclear Connecticut, Inc.
5000 Dominion Boulevard, Glen Allen, VA 23060 Dominion Energy.com ATTN: Document Control Desk October 29, 2020 U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Dominion Energy 0
Serial No.:
20-387 NRA/SS:
RO Docket Nos.:
50-245 50-336 50-423 License Nos.:
DPR-21 DPR-65 NPF-49 DOMINION ENERGY NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNITS 1, 2 AND 3 REVISION TO EMERGENCY PLAN - REPORT OF CHANGE Pursuant to 10 CFR 50.54(q)(5) and 10 CFR 72.44(f), a summary of the change analysis for Revision 62 to the Millstone Power Station (MPS) Emergency Plan is provided in the attachment. The change to the Emergency Plan was effective on September 29, 2020.
The changes incorporated in this revision did not require prior NRG approval and do not implement actions that reduce the effectiveness of the MPS Emergency Plan.
The Emergency Plan continues to meet the standards of 10 CFR 50.47(b) and Appendix E.
If you have any questions or require additional information, please contact Shayan Sinha at (804) 273-4687.
Sincerely, Mark D. Sartain Vice President - Nuclear Engineering & Fleet Support Commitments made by this letter: None
Attachment:
Millstone Power Station Emergency Plan, Revision 62, 10 CFR 50.54(q)(5) Summary
cc:
Regional Administrator, Region I
- U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd, Suite 100 King of Prussia, Pennsylvania 19406-2713 ATTN: Document Control Desk Director, Division of Spent Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 R. V. Guzman NRC Senior Project Manager - Millstone Power Station U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 C2 11555 Rockville Pike Rockville, Maryland 20852-2738 Yen-Ju Chen NRC Senior Project Manager - ISFSls U. S. Nuclear Regulatory Commission Mail Stop 4834 Two White Flint North 11545 Rockville Pike Rockville, Maryland 20852-2738 NRC Senior Resident Inspector Millstone Power Station Serial No.: 20-387 Docket Nos.: 50-245/336/423 Page 2 of 2
ATTACHMENT Serial No.: 20-387 Docket No.: 50-245/336/423 Millstone Power Station Emergency Plan, Revision 62 10 CFR 50.54{g){5) Summary DOMINION ENERGY NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNITS 1, 2 AND 3
Serial No.: 20-387 Docket Nos.: 50-245/336/423 Attachment, Page 1 of 1 Millstone Power Station Emergency Plan, Revision 62, 10 CFR 50.54(q)(5) Summary The Millstone Power Station Emergency Plan was revised to reflect recent changes to the Millstone Power Station Unit 2 (MPS2) Technical Specifications, which were approved by the NRG under License Amendment 340 (ADAMS Accession No. ML20191A004, with correction letter ML20236Q327).
This change reduced the Reactor Coolant System and Secondary System specific activity limits required to meet the control room dose regulatory limits. The specific activity changes were based on evaluations to assess the radiological consequences following postulated design basis Main Steam Line Break and Steam Generator Tube Rupture accidents. Specifically, the Millstone Emergency Action Levels were revised to reflect a 50% decrease in Technical Specification limits for Reactor Coolant System Dose Equivalent Iodine Activity (from >60 µCi/gm to >30 µCi/gm) and the Dose Rate at One Foot from an Unpressurized RCS Sample (from ~2mR/hr/mL to ~1 mR/hr/mL).
The Millstone Emergency Plan required revision because the Emergency Action Levels are incorporated as an appendix. The means used for determining the magnitude of, and for continually assessing the impact of, the release of radioactive materials is not altered by implementation of the changes to the Emergency Action Levels. The means for communicating onsite and offsite radiation monitoring information via a standard scheme is maintained.
Regulations and commitments regarding Emergency Preparedness continue to be met.