ML20004E983

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Responds to IE Bulletin 81-03, Flow Blockage of Cooling Water to Safety Sys Components by Corbicula Sp (Asiatic Clam) & Mytilus Sp (Mussel). Insps Are Underway.Results Will Be Submitted 30 Days After Cycle 4 Startup
ML20004E983
Person / Time
Site: Trojan File:Portland General Electric icon.png
Issue date: 05/26/1981
From: Withers B
PORTLAND GENERAL ELECTRIC CO.
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-81-03, IEB-81-3, NUDOCS 8106160291
Download: ML20004E983 (1)


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>ei w..v.t May 26, 1981 Trojan Nuclear Plant Docket 50-344 License NPF-1 k,

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Dear Mr. Engelken:

This letter is in response to IE Bulletin 81-03 of April 10, 1981 con-cerning flow blockage of cooling water to safety system components by Corbicula Sp (Asiatic Clam) and Mytilus Sp (Mussel). In accordance with IE Bulletin 81-03, inspections of the Fire Protection System and other safety-related systems at the Tre:an Nuclear Plant are presently being conducted in order to determine if the Corbicula Sp is present. Due to the heavy work load of the 1981 refueling outage, it is unlikely that the results of these inspections will be available in time to meet the scheduled reporting date of IE Bulletin 81-03.

It is proposed, therefore, that the results of thece inspections be forwarded to your office within 30 days af ter the startup of Cycle 4 operations. This delay will not affect Plant safety because of the present shutdown condition of the Trojan Nuclear Plant. Unless we hear otherwise, we will proceed with this proposed schedule.

Sincerely, Bart D. Withers Vice President Nuclear c:

Mr. Lynn Frank, Director State of Oregon Department of Energy 810 e 3 a ca91 Q

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