ML13205A003
| ML13205A003 | |
| Person / Time | |
|---|---|
| Site: | Kewaunee  |
| Issue date: | 07/15/2013 |
| From: | Heacock D Dominion Nuclear Connecticut, Dominion Energy Kewaunee |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 13-402 | |
| Download: ML13205A003 (3) | |
Text
Dominion Nuclear Connecticut, Inc.-
Dominion 5000 Dominion Boulevard, Glen Mien, VA 23060 Web Address: www.dom.coni
-July 15, 2013 U.S. Nuclear Regulatory Commission Serial No.13-402 Attention: Document Control Desk NL&OS/WDC RO Washington, DC 20555 Docket No.
50-305 License No.
DPR-43 DOMINION ENERGY KEWAUNEE, INC.
KEWAUNEE POWER STATION OFFSITE DOSE ASSESSMENT CAPABILITY DURING AN EVENT INVOLVING MULTIPLE RELEASE SOURCES By letter dated February 25, 2013, Dominion Energy Kewaunee, Inc. (DEK) informed the NRC of its intention to permanently cease operation of Kewaunee Power Station (KPS) on May 7, 2013. In a letter to the Nuclear Energy Institute (NEI) from the NRC dated February 27, 2013 (ML13029A632), the NRC requested additional detailed information regarding licensee's site-specific, current or planned, multi-unit dose assessment capabilities.
In response to the Director, Nuclear Security and Incident Response, dated March 14, 2013 (ML13073A522), NEI notified the NRC that licensees would provide letters directly to the NRC describing multi-unit/multi-source dose assessment capability. Subsequently, by letter dated May 14, 2013, DEK submitted a certification of permanent removal of fuel from the reactor vessel pursuant to 10 CFR 50.82(a)(1)(ii).
Therefore, as specified in 10 CFR 50.82(a)(2), the 10 CFR Part 50 license for KPS no longer authorizes operation of the reactor or emplacement or retention of fuel into the reactor vessel.
Since KPS is a single unit and presently without possibility of any regulatory significant, concurrent releases from reactor containment and the spent fuel pool, DEK considers the subject NEI commitment to be non-applicable to permanently shutdown and defueled licensees.
However, DEK provides the following information regarding the present capability to perform offsite dose assessment at KPS.
Currently, KPS uses Meteorological Information Dose Assessment System (MIDAS) software from ABS Consulting, Inc., as its dose calculation model. MIDAS is a personal computer based program for rapidly assessing the radiological impact of accidents at nuclear power plants. It calculates total effective dose equivalent and thyroid doses.
Source term information is derived from plant effluent monitors, reactor coolant system or containment samples, field monitoring teams, or a default design basis accident scenario. For a set of events involving multiple sources, individual dose assessment results can be summed to determine a total offsite dose assessment result.
Since KPS is no longer an operating plant, but is rather a non-operating licensee in a permanently shutdown and defueled condition, no enhancements are planned for multi-source dose assessment capability.
Serial No.13-402 Docket No. 50-305 Page 2 of 3 If you have any questions regarding this information, please contact Craig Sly at (804) 273-2784.
Sincerely, David A. Heacock President and Chief Nuclear Officer Dominion Energy Kewaunee, Inc.
Commitments made in this letter: None COMMONWEALTH OF VIRGINIA
)
COUNTY OF HENRICO
)
The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by David A. Heacock, who is President and Chief Nuclear Officer of Dominion Energy Kewaunee, Inc.
He has affirmed before me that he is duly authorized to execute and file the foregoing document in behalf of that company, and that the statements in the document are true to the best of his knowledge and belief.
Acknowledged before me this 1,*1ý day of j,2013.
My Commission Expires:
cv,,-ar 51) io.ofb CRAIG D SLY Notary Public Commonwealth of Virginia My Reg. # 7518653 Commission Expires December3 onlub
Serial No.13-402 Docket No. 50-305 Page 3 of 3 cc:
Director, Office of Nuclear Reactor Regulation One White Flint North Mail Stop 13H16 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission, Region III Regional Administrator 2443 Warrenville Road Suite 210 Lisle, Illinois 60532-4352 K. D. Feintuch Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 08 D-1 5 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Kewaunee Power Station