ML20235K251

Requests Addl Info to Assess Safe Operation of Facility Following 1987 Refueling Outage.Concerns Expressed Re Supports Inadequate to Meet Design Loads & Original Design Loads Derived Inappropriately.Submittal of Fee Not Required

ML20235K251
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	07/09/1987
From:	Crutchfield D Office of Nuclear Reactor Regulation
To:	Cockfield D PORTLAND GENERAL ELECTRIC CO.
References
TAC-65726, NUDOCS 8707160226
Download: ML20235K251 (4)

Text

. w t 9 jyt 1987 l Docket No. 50-344 DISTRIBUTION H RDocket F,ile/TMartin NRC & Local PDRs/TMurley Mr. David W. Cockfield PDV Plant File /LShao Vice President, Nuclear GHolahan/ Shou Portland General Electric Company JLee/TMarsh 121 S. W. Salmon Street TChan Portland, Oregon 97204 OGC-Beth EJordan/JPartlow

Dear Mr. Cockfield:

ACRS (10) j

SUBJECT:

ADEQUACY OF PIPE SUPPORT DESIGN AND ANALYSES J FOR SAFETY-RELATED SYSTEMS l i

i Pursuant to 10 CFR 50.54(f), the NRC is requesting information to assess safe operation of the Trojan Nuclear Plant following its 1987 refueling outage.

Based upon the recent staff audit on the main steam line support design for the Trojan plant, the staff has concerns regarding the fourteen safety-related l

supports designed and analyzed by Bechtel Corporation. These concerns fall l into the following three areas: (1) supports were inadequate to meet design 1 loads, (2) the original design loads were derived inappropriately, and (3) there were no original design calculations. The staff does not have adequate assur-ance that the original pipe support analyses performed for the main steam system J demonstrate compliance with those requirements under which Trojan was licensed.

l In addition, recognizing that Bechtel was involved in the design and analysis l

aspect of other safety-related systems at Trojan, the staff has similar concerns regarding the original design of piping and supports in these systems.

As such, we request you address the identified concerns. Your response should l include, but not be limited to, discussions relating to the design, documenta-tion, and construction supporting Trojan's conformance to the original licensing basis for the mein steam system. Where deficiencies are found, PGE should describe corrective action to be taken prior to resuming power operation.

PGE should also describe actions taken or to be taken to identify and resolve potential deficiencies in other system supports, including the appropriate justification for operation if longer-term action is to be taken.

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' 8707160226 070709 4 DR ADOCK 0500 l

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Our review and approval of your response is reauired prior to startup. This information is recuired pursuant to 10 CFR 50.54(f) to assess Trojan's confor-mance with its licensing basis and to determine whether additional NRC action is necessary. Our review of information you submit is not subject to fees under the provision of 10 CFR 170.

Original signed by Dennis M. Crutchfield, Director Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc:

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Our review and approval of your response is required prior to startup. This information is required pursuant to 10 CFR 50.54(f) to assess Trojan's confor- l mance with its licensing basis and to determine whether additional NRC action  ;

is necessary. Our review of information you submit is not subject to fees  !

under the provision of 10 CFR 170.

i Frank J. Miraglia Associate Director for Projects Office of Nuclear Reactor Regulation '

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Mr, David W. Cockfield Portland General Electric Company Trojan Nuclear Plant CC; Senior Resident Inspector U.S. Nuclear Regulatory Commission Trojan Nuclear Plant Post Office Box 0 Rainier, Oregon 97048 l

Michael J. Sykes, Chairman Board of County Commissioners Columbia County St. Helens, Oregon 97501 Mr. David Kish Oregon Department of Energy Labor and Industries Building Room 111 Salem, Oregon 97310 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596

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