ML19351F677

Responds to IE Bulletin 76-06, Diaphragm Failures in Air Operated Auxiliary Actuators for Safety Relief Valves. No safety-related Diaphragm Operated Valves in High Temp Fluid Sys Installed or Planned for Use at Facility

ML19351F677
Person / Time
Site:	Humboldt Bay
Issue date:	07/28/1976
From:	Crane P PACIFIC GAS & ELECTRIC CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
IEB-76-06, IEB-76-6, NUDOCS 8102180085
Download: ML19351F677 (1)

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PACIFIC GAS AND E LE C T RIC C O M PANY 72'*4*3

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245 M ARKET STREET = S AN FR ANCISCO, C ALIFOR NI A 94106 - (415) 7814211 TWX 910 372 6587 July 28, 1976 Mr. R. H. Engelken, Director Office of Inspection and Enforcement Region V U.S. Ihclear ReSulatory Commission 1990 N. California Boulevard Walnut Creek Plaza, Suite 202 Walnut Creek, California 94596 Re: Docket No. 50-133 License No. DPR-7

Dear Mr,

Engelken:

Your letter dated July 21, 1976 and the attach =ent, IE Balletin 76-06, reported a malfunction of a Target Rock safety relief valve at another reactor facility and requested a response on the applicability of this problem to our Humboldt facility.

There are no safety related diaphra5= operated relief valves in high te=perature fluid systems installed at Humboldt Bay Unit No. 3 and we have no plans to install any of these valves in the future.

V ry truly yours,

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1 Phillip

rane, PAC:EG Attachment

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