ML20132B333

Requests Tech Spec Changes to Eliminate Inconsistency in Tech Spec 3.7.1.4 Requirement for Condensate Storage Tank Min Level of 47% Water & 60% Water Level Determined to Be Necessary After 850720 Auxiliary Feedwater Pump Trip

ML20132B333
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	09/13/1985
From:	Butcher E Office of Nuclear Reactor Regulation
To:	Withers B PORTLAND GENERAL ELECTRIC CO.
References
TAC-60783, NUDOCS 8509260163
Download: ML20132B333 (2)

Text

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September 13, 1985 Docket No. 50-344 Mr. Bart D. Withers Vice President Nuclear Portland General Electric Company 121 S.W. Salmon Street Portlard. Oregon 97204

Dear Mr. Withers:

The staff has reviewed you'r letter of August 12, 1985 concerning the July 20, 1985 event when the diesel-driven auxiliary feedwater pump tripped on low suction pressure after its automatic start. According to your letter, it has been detennined by your staff that a minimum level of 60 percent water level in the condensate storage tank (CST) is necessary for both auxiliary feedwater pumps to start simultaneously from an automatic initiation signal.

Trojan Technical Specification 3.7.1.4 on the CST level currently requires a minimum level of only 47 percent.

It is understood that PGE is engaged in a detailed review of the design and failure history of the Auxiliary Feedwater System, the results of which will detennine the long term corrective action. In the interim, it is the staff's opinion that the inconsistency between Technical Specification 3.7.1.4 and the necessary CST level for the desired operability of the Auxiliary Feedwater System should be eliminated. It is therefore requested that you submit the appropriate technical specification changes for review and incorporation as soon as possible and no later than within 30 days of receipt of this letter.

Sincerel ,

Edward J. Butcher, Acting Chief Operating Reactors Branch No. 3 Division of Licensing cc: See next page Distribution:

Docket File NRC & L PDRs Branch Files HThompson Edordan 8509260163 850913

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LLazo ACRS 10 ORB #3;DL ORB #3:D OR euher Llazote 't e'r g'y/g/85 9 7//t,/85 c)/fc/85

., Mr. Bart D. Withers Portland General Eletric Company Trojan Nuclear Plant ,

i cc:

Senior Resident Inspector U.S. Nuclear Regulatory Commission Trojan Nuclear Plant Post Office Box 0 Rainier, Oregon 97048

Robert M. Hunt, Chairman Board of County Commissioners Columbia County St. Helens, Oregon 97501 William T. Dixon Oregon Department of Energy Labor and Industries Building Room 111 Salem, Oregon 97310 1

Regional Administrator, Region V

-U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 1450 Maria Lane, Suite 210 l Walnut Creek, California 94596 e

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