ML081620243
| ML081620243 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 06/09/2008 |
| From: | Gerald Bichof Dominion, Dominion Nuclear Connecticut |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 08-0050B, TAC MD6115, TAC MD6116 | |
| Download: ML081620243 (4) | |
Text
Dominion Nuclear Connecticut, Inc.
~()()() Dominion Boulevard, Glen Allen, Virginia LIi)60 w...[, Address: www.dom.com June 9, 2008
~
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-' Dominion U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Serial No.
MPS Lic/GWJ Docket Nos.
License Nos.
08-0050B RO 50-336 50-423 DPR-65 NPF-49 DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNITS 2 AND 3 SUPPLEMENTAL INFORMATION REGARDING CONTROL ROOM HABITABILITY (TAC NOS. MD6115 AND MD6116)
On July 13, 2007, Dominion Nuclear Connecticut, Inc. (DNC) submitted a request for an amendment to the Technical Specifications (TSs) for Millstone Power Station Units 2 and 3 (MPS2 and MPS3)
(Serial No. 07-0440).
The proposed amendment would revise TS requirements related to control room envelope habitability consistent with the intent of NRC-approved Technical Specification Task Force (TSTF)
Standard Technical Specification Change
- Traveler, TSTF-448, "Control Room Habitability," Revision 3.
In response to requests for additional information (RAI), ONC submitted letters dated December 7, 2007 (Serial No. 07-0790), March 5, 2008 (Serial No.08-0050) and March 25, 2008 (Serial No. 08-0050A).
As discussed in a conference call between NRC staff and DNC on May 22, 2008, DNC is superseding its response to Question 3 in the March 25, 2008 letter (Serial No.08-0050A). This response clarifies the intent of DNC's application of the ASTM E741 testing methodology to nuclear power plant control room envelope integrity.
Should you have any further questions in regard to this submittal, please contact Mr. William D.
Bartron at (860) 444-4301.
Sincerely, Idt1£6 Gerald Bischof Vice President - Nuclear Engineering COMMONWEALTH OF VIRGINIA COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Gerald T. Bischof, who is Vice President - Nuclear Engineering of Dominion Nuclear Connecticut, 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 97J'day ofJ(;t1~,2008.
My Commission Expires:fi, 34';;1210 I'l~h'~ Mta Notary Public
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Serial No. 08-0050B Docket No. 50-336 50-423 Control Room Habitability Supplemental Information Page 2 of 2 Attachments: (1)
Control Room Habitability (TAC Nos. MD6115 and MD6116) - Revised Response to Question 3 in the March 25, 2008 letter (Serial No.08-0050A)
Commitments: (None) cc:
U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Mr. J. D. Hughey Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 08 B3 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station Director Bureau of Air Management Monitoring and Radiation Division CT Department of Environmental Protection 79 Elm St.
Hartford, CT 06106-5127
Serial No. 08-00508 ATTACHMENT CONTROL ROOM HABITABILITY (TAC NOS. MD6115 AND MD6116)
REVISED RESPONSE TO QUESTION 3 IN THE MARCH 25. 2008 LETTER DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNITS 2 AND 3
Serial No. 08-00508 Docket Nos. 50-336 50-423 Control Room Habitability Supplemental Information Attachment, Page 1 of 1 CONTROL ROOM HABITABILITY SUPPLEMENTAL INFORMATION As discussed in a conference call between NRC staff and ONC on May 22, 2008, ONC is superseding its response to Question 3 in the March 25, 2008 letter (Serial No.08-0050A). This response clarifies the intent of ONC's application of the ASTM E741 testing methodology to nuclear power plant control room envelope integrity.
NRC Question ONC references NEI 99-03, Revision 1, Appendix EE, in Attachment 1, Page 7 of 11 under "Exceptions" The NRC staff has not reviewed NEI 99-03, Revision 1.
Therefore, exceptions used in Appendix EE of NEI 99-03, Revision 1, have not been reviewed by the NRC staff.
Please identify alternate plant-specific ASTM E741 exceptions and provide a detailed explanation justifying the acceptability of these exceptions.
ONC Response The ASTM E741 test method was not written specifically for use in nuclear power plant control room envelope tests.
Exceptions referenced in ONC's submittal on July 13, 2007 (Serial No.
07-0440) are limited to those exceptions necessary to meet the intent of the ASTM E741 methodology when applying it to nuclear power plant control room envelope testing.
These exceptions are typically taken by test vendors and documented in test reports, as is the case for MPS3.
When CRE testing is performed at MPS2 without the use of a vendor, ONC will document the steps taken to appropriately apply the ASTM E741 test methodology in the surveillance.