ML20210N821

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Forwards Insp Rept 50-309/97-02 on 970218-0618.No Violations Noted.Inspectors Concluded That Response to Recent Cable Separation Problem Was Fragmented & Lacked Sufficient Foresight in Both Scope,Methodology & Acceptance Criteria
ML20210N821
Person / Time
Site: Maine Yankee
Issue date: 08/12/1997
From: Ruland W
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To: Sellman M
Maine Yankee
Shared Package
ML20210N826 List:
References
50-309-97-02, 50-309-97-2, NUDOCS 9708260129
Download: ML20210N821 (3)


See also: IR 05000309/1997002

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August 12, 1997

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Mr. Michael B. Sellman

President

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Maine Yankee Atomic Power Company

329 Bath Road

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Brunswick, Meine 04011

SUBJECT:

NRC INSPECTION REPORT 50 309/97-02

Dear Mr. Sellman:

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This inspection was conducted by NRC inspectors and contractors during the periods of

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Februtry 18 through Juno 18,1997. The inspection included an assessment of the

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progress made by the licensee in the review and corrective action for the cable separation

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and Generic Letter 96-01 logic testing issues discussed in Confirmatory Action Letter (CAL)

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96-01, dated December 18,1996, and supplement, dated January 30,1997. The CAL

documented a number of cable separation and testing problems you had identified prior to

the initial CAL issue. The CAL required you to expand your review to determine the extent

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of the cable separation problem to ensure that all safety significant cable separation

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problems were identified and appropnately dispositiened or resolved pursuant to your

licensing and design basis.

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The CAL also required you to perform root cause evaluations that will address all hardware

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deficierules identified, cnd utilize this informat;on to validate the comprehensiveness of

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your corrective actions. This inspection report is an update on those activities which had

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also been discussed in inspection report 50-309/96-14 and does not close the NRC review

on either of these items.

The inspectors concluded that the methodology used to develop circuit specific test

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drawings and compare those circuits with the test procedures was good and demonstrated

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a good understanding of the problem. The response to the Generic Letter 96-01, Logic

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Circuit Testing, will remain open pending NRC review of the results of your testing using

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the permanent plant test procedures as discussed in Section E1.1 of this report.

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The inspectors concluded that your response to the cable separation problem was

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fragmented and lacked sufficient foresight in both scope, methodology and acceptance

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Giteria. The issue of cable separation remains open pending your resolution of the

separation discrepancies identified in your reviews, in addition, an additional inspection

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followup item was opened. This open item involves your proposed submittal of a revised

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cable separation criteria, and the NRC review, of your revised approach for cable

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separation and review of any corrective actions that may be involved. This is discussed

further in Section E3.1 of this report.

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Mr.' Michael B. Sellman

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Inspection reports 50-309/9611 [EA 96 320] and 9616 [EA 97-0341 discussed a number

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. of apparent violations concerning equipment operability and testing inadequacies. An

enforcement conference was held on March 11,1997, with the Maine Yankee staff to

. discuss those apparent violations. - Enforcement action is pending 'on those items.

The initial NRC effort involved the use of two NRC contractors. NRC discovered a

potential conflict of interest with one of those contractors. Therefore, this report is only

based on the work documented by the second contractor and additicaal followup work

performed by a Region I specialist. The regional inspector compared the work performed

. by the two contractors for independence and independently verified selected items covered

by this report.

If you have any questions, please call me at (610) 337 5376.

Sincerely,

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ORIGINAL SIGNED'BY:

William H. Ruland, Chief

Electr; cal Engineering Branch

Division of Reactor Safety

Docket No:

50-309

License No:

DPR-36

. Enclosure: . NRC Inspection Report No. 50-309/97-02

cc w/ encl:

G. Leitch, Vice President, Operations

M. Maisner, Vice President, Licensing and Regulatory Compliance

R. Fraser, Vice President, Engineering

J. M.' Block, Attorney at Law

P. L, Anderson, Project Manager (Yankee Atomic Electric Company)

R. Blackmore, Plant Manager

L. Diehl, Manager of Public and Governmental Affairs

J. A.' Ritsher, Attorney (Ropes and Gray)

P. Dostle, State Nuclear Safety inspector -

P. Brann, Assistant Attorney General

U. Vanags, State Nuclear Safety Advisor

T C. Brinkman, Combustion Engineering, Inc.

W. D. Meinert, Nuclear Engineer

First Selectmen of Wiscasset

Maine State Planning Officer - Nuclear Safety Advisor

State of Maine, SLO Designee.

State Planning Officer - Executive Department

Friends of the Coast

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- Mr. Michael B. Sellman

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Distribution w/ encl:--

Region I Docket Room,(with concurrences)-

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Nuclear Safety information Center (NSIC)

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NRC Resident inspector'

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Inspection Program Branch, NRR (IPAS)

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DOCUMENT NAME: A:\\MY9702. INS

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