ML20210B051

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Informs That Investigation Into Design & Operation of Min Flow Recirculation Valves in Eccs,Per IE Bulletin 86-003 Re Potential Failure of ECCS Pumps,Continuing.Results Will Be Submitted by 870115
ML20210B051
Person / Time
Site: Surry, North Anna, 05000000
Issue date: 12/15/1986
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Grace J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
86-677A, IEB-86-003, IEB-86-3, NUDOCS 8702090064
Download: ML20210B051 (2)


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VINGINIA l$LECTHIC AND l'OWEH COMI%NY llICIIMOND, VINGINIA 200 61 December 15, 1986 c r g L. O y ge f r.a U **

W. I.. STEWAltT VarB l'BEfBIDENT Nos Laam oramarsomas Dr. J. Nelson Grace Serial No.

86-677A Regional Administrator N0/RCB:dmk Reb on II Docket Nos.

50-280 i

U. S. Nuclear Regulatory Commission 50-281 Suite 2900 50-338 101 Marietta St., N. W.

50-339 Atlanta, Georgia 30323 License Nos.

DPR-32 DPR-37 NPF-4 NPF-7

Dear Dr. Grace:

VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 NORTH ANNA POWER STATION UNITS 1 AND 2 1.E. COMPLIANCE BULLETIN 86-03 POTENTIAL FAILURE OF MULTIPLE ECCS PUMPS DUE TO SINGLE FAILURE OF AIR-OPERATED VALVE IN MINIMUM FLOW RECIRCULATTON LINE In our letter serial number 86-677 dated November 12, 1986, we reported that we were continuing our investigation into the design and operation of the minimum flow recirculation valves in the Emergency Core Cooling System. We further stated that the investigation would take about 30 days and that we would report results by December 15, 1986.

As discussed with the Project Managers on December 12, 1986 and with a member of your staff on December 15, 1986, our investigation has not yet been completed.

We anticipate that the investigation will be completed in the near future and our intent is to subnit the results by January 15, 1987.

If you have any questions concerning this matter, please do not hesitate to contact me.

Very truly yours, N

k.

L. Stewart 1

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Mr. Lester S..Rubenstein, Director PWR Project Directorate No. 2 Division of PWR Licensing-A Mr. W. E. Holland NRC Resident Inspector Surry Power Station Mr. J. L. Caldwell NRC Senior Resident Inspector North Anna Power Station Mr. Chandu P. Patel NRC Surry Project Manager PWR Project Directorate No. 2 Division of PWR. Licensing No. 2 Mr. Leon B. Engle NRC North Anna Project Manager PWR Project Directorate No. 2 Division of PWR Licensing-A 4

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