ML19208B610
| ML19208B610 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/16/1979 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7909210065 | |
| Download: ML19208B610 (2) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 2:si e 4i.4ooo Docket No. 50-277 Au6ust 16, 1979 Mr. Boyce H. Grier Office of Inspection and Enforcement Region 1 United States Nuclear Regulatory Cocmission 631 Park Avenue King of Prussia, PA 19h06
SUBJECT:
Specification and Doc'1 mentation Deficiency for Air Operated Valves in Seismically Qualified Systems
Dear Mr. Grier:
As part of an Engineering docu=entation review as: 'tated with Bulletin 79-1h, Philadelphia Electric Company has detern ed that various air operated valves in seismically qualified systems were purchased without requiring seismic qualification data.
Docu=entation of the seismic qualification of these valves is therefore not availsble.
The valves involved include a total of 12h air operated valves ranging in size from 2" to 3/h" in diameter. These valves serve as containment isolation valves, vent and drain lines on the BPCI & RCIC system, and emergency service water supply valves to various ECCS room coolers. Four 6" valves were also identified.
These serve as emergency service water outlet valves from the diesel generators heat exchangers.
Conversation with the valve supplier indicates that similar valves have been seismically qualified for other sites by the manufacturer. The manufacturer also indicates that it is highly likely that all of the valves identified will meet seismic qualifica-tions without modification.
The valve manufacturer is WKM Division of ACF Industries.
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Mr. Boyce H. Grier Page 2 August 16, 1979 The valve manufacturer has been requested to review his engineering data and detemine if the valves involved have been ooismically analyzed and therefore qualified.
If this documentation cannot be found, a detailed analyses of each type of valve assembly will be perfomed to develop the required seismic qualifica. tion data.
The valve manufacturer and our Engineering Department have indicated that the analysis work, if necessa:/, can be completed in h to 6 weeks.
If as a result of the seismic analyses a valve is identified which does not meet the seismic criteria, appropriate reports will be made to the NRC.
Very truly yours,
/
M. J.
ooney perintende.t nerationDivision/ Nuclear bO1100