05000245/LER-1997-024, Forwards LER 97-024-00 Which Documents an Event That Occurred at Mnps,Unit 1 on 970409.Commitments Made within Ltr,Listed

Forwards LER 97-024-00 Which Documents an Event That Occurred at Mnps,Unit 1 on 970409.Commitments Made within Ltr,Listed

ML20140H657
Person / Time
Site:	Millstone
Issue date:	05/09/1997
From:	Hinnenkamp P NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20140H662	List: 05000245/LER-1997-024, Forwards LER 97-024-00 Which Documents an Event That Occurred at Mnps,Unit 1 on 970409.Commitments Made within Ltr,Listed 05000245/LER-1997-024-01, :on 970409,miscoordination of Breakers Caused Loss of QA to non-QA Isolation.Caused by Inadequate Original Design,Mod Review & Commitment Tracking.Conducted Training for Electrical Engineering Personnel Coordination Issues
References
B16400, NUDOCS 9705130212
Download: ML20140H657 (2)

LER-1997-024, Forwards LER 97-024-00 Which Documents an Event That Occurred at Mnps,Unit 1 on 970409.Commitments Made within Ltr,Listed

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(ii)
2451997024R00 - NRC Website

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Utilities Sydern e.o.am 128 Waterford. Cr 06335-0128 (P,60) 447-1791 May 9,1997 s

Docket No. 50-245 l.j B16400 l f Re: 10CFR50.73(a)(2)(ii) l-1 l ;l U.S. Nuclear Regulatory Commission 3

Document Control Desk l

Washington, DC 20555 This letter forwards Licensee Event Report (LER) 97-024-00, documenting an event that occurred at Millstone Nuclear. Power Station, Unit No. I on April 9,1997. This LER is

' submitted pursuant to 10CFR50.73(a)(2)(ii).

The following are Northeast Nuclear Energy Company'!. (NNFCO's) commitments made within 2

- this letter. All other statements made within this letter are for information only.

)-

B16400-1 NNECO commits to conduct training for electrical engineering personnel on

'l electrical coordination issues to ensure the concept is captured in future design preparation including the calculation and design reviews prior to start-up for operating cycle 16.

fl B16400-2 NNECO commits to review electrical systems at the circuit level for mis-coordination and correct as required prior to start-up for operating cycle 16.

i; B16400 3 NNECO commits to eliminate breaker to breaker mis-coordination between panels containing both safety and non-safety circuits and their respective panel supply breakers prior to start-up for operating cycle 16.

i B16400-4 NNECO commits to complete the 50.54(f) review to identify the current design 1i basis reqdrements pertaining to electrical separation and single fail 6te criteria prior to startup for operating cycle 16.

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Very truly yours, M f,3 l

l NORTHEAST NUCLEAR ENERGY COMPANY For:

P. D Hinnenkamp Director, Unit Operations 97051302i2 970509

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By: Odm P.4fcElwain Millstone Unit No.1 Recovery Officer

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.i lq Attachment: LER 97-024 00 i

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cc: Dr. W. D. Travers, Director, Special Projects -

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- S. Dembek, NRC Project Manager, Millstone Unit No.1 l

T. A. Easlick, Senior Resident Inspector, Millstone Unit No. I o

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