ML18139A458
| ML18139A458 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/14/1980 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Varga S Office of Nuclear Reactor Regulation |
| References | |
| 612, NUDOCS 8007210435 | |
| Download: ML18139A458 (2) | |
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e Vni.oINIA ELECTRIC AND PowER COMPANY RrcHMOND,V:rRGXN.IA. 23261 July 14, 1980 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn:
Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Denton:
Serial No.
612 NO/FHT:baw Docket Nos: 50-280 50-281 License Nos: DPR-32 DPR-37 Asymmetric LOCA Loads on Reactor Pressure Vessels Surry Power Station Units 1 and 2 In response to Mr. Victor Stella's letter of January 25, 1978, Virginia Electric and Power Company became a participant in a Westinghouse Owners Group to resolve the subject issue.
Our letter of February 21, 1980, Serial No. 134, Docket Nos. 50-280 and 50-281, provided the status of the evalua-tions to that date and the commitment to provide the results of the Phase-C work (Reactor Vessel Internals) by July, 1980.
This letter is intended to update the status of the evaluation of this issue and reference the Phase-C results, WCAP-9748, submitted by Westinghouse letter NS-TMA-2266, dated June 30, 1980.
As a result of discussions with members of your staff (Mr. Steve Hosford, et. al.), the Owners Group has revised the Mechanistic Fracture Evaluation Study, WCAP-9558, to include consideration of weld metal.
Work in this area continues with the final results expected to be available by September, 1980.
As a partial response to your staff's concerns, Westinghouse has submitted Revision 1 to WCAP-9558 by their letter NS-TMA-2265, dated June 30, 1980.
This Revision 1 to WCAP-9558 responds to questions raised by your staff, with the exception of the evaluation of weld metal.
The evaluation of weld metal will be provided by an addendum to WCAP-9558 by September, 1980.
This completes the scope of work on Phase C of the subject program.
The Owners Group will forward the results of the Mechanistic Fracture Evalua-ll!J>
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VIRGINIA ELECTRIC AND POWER COMPANY TO Mr. Harold R. Denton 2
tion of weld metal as soon as it is available.
If you have questions or require additional information, please contact this office.
cc:
Mr. James P. O'Reilly Very truly yours, foe-~
B. R. S5flvia Director-Nuclear Operations and Maintenance