ML19242A802

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Responds to IE Bulletin 79-01A Re Deficiencies in Environ Qualifications of Asco Solenoid Valves.Approx 200 Asco Valves Used in safety-related Sys.Replacements Being Ordered & Will Be Installed Upon Receipt
ML19242A802
Person / Time
Site: Beaver Valley
Issue date: 07/31/1979
From: Dunn C
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
NUDOCS 7908060354
Download: ML19242A802 (2)


Text

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435 Sath Avenue Pittsburgh, Pennsylvanes 15219 July 31, 1979 United States Nuclear Regulatory Commission Director, Division of Reactor Operations Inspection Of fice of Inspection and Enforcement Washington, D. C. 20555

Reference:

Beaver Valley Power Station, Unit No. 1 Docket No. 50-334 IE Bulletin 79-OlA Gentlemen:

We has. reviewed IE Bulletin 79-01A regarding deficiencies in the environmenta. qualifications of ASCO solenoid valves.

As a result of our investigations to date, we have determined the following:

1) approxinately 200 ASCO solenoid valves are used in safety-related systems at BVDS Unit 1.
2) as many as 44 of these are located inside containment in the following systens:

Ccaponent Cooling Water System Charging System Reactor Coolant System Instrument Air Systen Sampling System Reactor Plant Drains & Vents System

3) As reported in LER 79-24, the ASCO solenoid valves inside containment:

a) all have parts made of acetal plastic b) all contain BUNA "N" materials c) cost do not have Class "HT" or "HB" coils Replacement ASCO solenoid valves are being ordered and will b3 installed upon receipt, expected during the upcoming refueling outage. A preventive maintenance program will be developed at that time.

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Beaver Valley Power Station, Unit No. 1 Docket No. 50-334 Response to IE Bulletin 79-01A Page 2 Any additional interim measures which may be required are being reviewed by the station Onsite Safety Committee and will be addressed in a followup report for LER 79-24.

If you have any questions regarding this response, please contact my office.

Very truly yours, i

C. N. Dunn Vice President, Operations cc: United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 J' , . l o .,