05000423/LER-1998-012, Forwards LER 98-012-01,documenting Addl Info Pertaining to Condition That Was Determined Reportable on 980218. Attachment 1 Contains Commitments in Response to Event

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Forwards LER 98-012-01,documenting Addl Info Pertaining to Condition That Was Determined Reportable on 980218. Attachment 1 Contains Commitments in Response to Event
ML20239A469
Person / Time
Site: Millstone Dominion icon.png
Issue date: 08/31/1998
From: Brothers M
NORTHEAST NUCLEAR ENERGY CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20239A470 List:
References
B17209, NUDOCS 9809090225
Download: ML20239A469 (5)


LER-2098-012, Forwards LER 98-012-01,documenting Addl Info Pertaining to Condition That Was Determined Reportable on 980218. Attachment 1 Contains Commitments in Response to Event
Event date:
Report date:
4232098012R00 - NRC Website

text

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Northeast Rcy Fem E @mte M, heedord G N Nuclear Energy uistoo, Nociear rower siatioo I Nonheast Nudcar Energy Company P.O. Box 128 Waterford, CT 06385-0128 (860) 447-1791 Fax (860) 444-4277 The Northeast Utilities System Docket No. 50-423 B17209 Re: 10 CFR 50.73(a)(2)(v) l l

AUG 3 l 1998 Nuclear Regulatory Commission Document Control Desk  :

Washington, DC 20555 Millstone Nuclear Power Station Unit 3 Licensee Event Report 98-012-01 l Potential Failure of Residual Heat Removal Pumps Due To Loss of Minimum Flow Protection l This letter forwards Suppsmental Licensee Event Report (LER) 98-012-01 (Attachment 2), documenting additional information pertaining to a condition that was determined reportable at Millstone Unit No. 3 on February 18, 1998.

Northeast Nuclear Energy Company commitments in response to this event are  !

described in Attachment 1 to this letter.  ;

Should you have any questions regarding this submittal, please contact Mr.

David A. Smith at (860) 437-5840.

Very truly yours, /

NORTHEAST NUCLEAR ENERGY 27F COMPANY I h /M M. H. Brothers Vice President - Operations

' ! L, t) ., 3 9809090225 980831 PDR ADOCK 03000423 S PDR

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l, U.S. Nuclar Regulatory Commission i

B17209/Paga 2

Attachment:

1) .

NNECO's commitments in response to LER 98-012-01

2) LER 98-012-01 cc: H. J. Miller, Region I Administrator J. W. Andersen, NRC Project Manager, Milittone Unit No. 3 t

A. C. Cerne, Senior Resident inspector, Millstone Unit No. 3 E. V. Imbro, Director, Millstone ICAVP inspections Corrective Action Group Files (CR M3-98-0897, M3-98-0974) l DWD:dd t

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4 Docket No. 50-423 B17209 l

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l Attachment 1 Millstone Nuclear Power Station, Unit No. 3 NNECO's Commitments in Response To

'LER 98-012-01 1

August 1998

l-U.S. Nuclear Regulatory Commission B17209/Atttchment 1/Pcgs 2 1

List of Regulatory Commitments The following table identifies those actions committed to by NNECO in this

! document. Please notify the Manager - Regulatory Compliance at the Millstone

, Nuclear Power Station Unit No. 3 of any questions regarding this document or any l associated regulatory commitments.

Number Regulatory Commitment Due Date B17209-01 Perform DCR M3-98013 to install the time Complete

delay relays in the control circuits for 3RHS*FCV610/611 to prevent miniflow valve cycling during pump start B17209-02 Complete Perform Revision 2 to DCR M3-96065 to revise the high/ low flow setpoints for 3RHS*FCV610/611 to establish values

, which should avoid miniflow valve cycling, j B17209-03 Complete The motor operator instantaneous overcurrent trip settings have been adjusted.

B17209 4 Complete Complete a quantitative analysis of RHR

miniflow valve performance under conditions l associated with limited forward feed from the RHR pumps.

B17209-05 Complete Retract or supplement LER 98-012 as appropriate.

B17209-06 Complete Engineering and Operations Management

" roll out" the results of this evaluation.

B17209-07 Complete A Conduct of System Engineering procedure has been developed which defines management expectations for trending and analysis of equipment performance, and for the timely resolution of repetitive equipment operating deficiencies, i-l l

n Docket No. 50-423 B17209 Attachment 2 Millstone Nuclear Power Station, Unit No. 3 NNECO's Submittal of Supplemental LER 98-012-01 August 1998 l

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