ML20009H514

Deficiency Rept Re Closure Problems W/Westinghouse Emd 6,8, 10,12,14,16 & 18-inch Valves,In Addition to 3 & 4-inch Valves.Final Rept Will Be Sent at Time of Response to IE Bulletin 81-02 Suppl.Reported Per Part 21

ML20009H514
Person / Time
Site:	Summer
Issue date:	07/30/1981
From:	Nichols T SOUTH CAROLINA ELECTRIC & GAS CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-81 IEB-81-02, IEB-81-2, NUDOCS 8108100200
Download: ML20009H514 (2)

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<r, SOUTH CAROLINA ELECTRIC a GAS COMPANY"*~ ~

POST OFFICE BOK 784 CotuMsA, SOUTH CARou A 18 T. C. NICHOLs, Ja.

v.c.p.o . .. o.oo,cucorm July 30, 1981

• p c, noca o.a.r.ou 4 Mr. James P. O'Reilly, Director

'&% 9 E; AUG '0 7124 73 U. S. Nuclear Regulatory Commission u Region II, Suite 3100 g s/

101 Marietta Street, N. W. ,

Atlanta, Georgia 30303 s ,

Subject:

Virgil C. Summer nuclear Station Docket No. 50/395 Reportable Substantial Safety Hazard Westinghouse EMD 6, 8, 10, 12, 14, 16 and 18 Inch Valves Re: Westinghouse 3" Gate Valve Closure Letter to NRC dated November 25, 1980 Westinghouse 4" Gate Valve Closure Letter to NRC dated March 12, 1981 Westinghouse 3" and 4" Gate Valves Letter to NRC dated July 7, 1981 IE Bulletin 81-02 Letter to NRC dated July 7, 1981

Dear Mr. O'Reilly:

On June 30, 1981, Mr. Virgil Brownlee of NRC Region 11 was informed by means of a telephone call of a potential significant deficiency. The potential significant deficiency concerned predicted closure problems anticipated in Uestinghouse EMD 6, 8, 10, 12, 14, 16 and 18 inch valves in addition to the 3 and 4 inch valves previously reported and addressed in the above references.

These additional valves were identified to us by Westinghouse due to their con-tinuing evaloation of Westinghouse 3" and 4" valve c?osure. The Westinghouse evaluation of large valves, inasmuch as it is an outgrowth of the Westinghouse 3" and 4" gate valve closure evaluation, is also being reported as-a substantial safety hazard as defined by 10CFR21.

Westinghouse and SCE&G are working concurrently at the Summer Station on a solution. Discussions with the NRC have indicated that I&E will be issuing a supple-ment to I&E Bulletin 81-02, " Failure of Cate Type Valves to Close Against Differential Pressure," which will address the subject valves. This is an interim report and a final report will be sent at the time of our response to the IEB 81-02 supplement.

SP1 8108100200 5 PDR ADOCK 0 fpp S

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Mr. James P. O'Reilly July 30, 1981 Page Two If you have any questions, please contact us.

Very truly yours, /

T. C. Nichols, Jr.

RMC:TCN:glb cc: V. C. Summer G. H. Fischer T. C. Nichols, Jr.

II. N. Cyrus

0. W. Dixon, Jr.

D. A. Nauman W. A. Williams, Jr.

R. B. Clary O. S. Bradham i A. R..Koon A. A. Smith H. Radin M. N. Browne H. E. Yocom B. A. Bursey J. K. Skolds J. B. Knotts, Jr.

Dr. J. Ruoff I&E.(Washington)

! Document Management Branch

! (55e, 21, LER Only)

NPCF l

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