05000245/LER-1994-020, Forwards LER 94-020-01 Which Documents Event That Occurred on 940527,per 10CFR50.73(a)(2)(ii).Commitments,listed

Forwards LER 94-020-01 Which Documents Event That Occurred on 940527,per 10CFR50.73(a)(2)(ii).Commitments,listed

ML20138J813
Person / Time
Site:	Millstone
Issue date:	02/10/1997
From:	Hinnenkamp P NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20138J820	List: 05000245/LER-1994-020, Forwards LER 94-020-01 Which Documents Event That Occurred on 940527,per 10CFR50.73(a)(2)(ii).Commitments,listed
References
B16035, NUDOCS 9702130079
Download: ML20138J813 (2)

LER-2094-020, Forwards LER 94-020-01 Which Documents Event That Occurred on 940527,per 10CFR50.73(a)(2)(ii).Commitments,listed

Event date:
Report date:
2452094020R00 - NRC Website

text

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gg g &pe Ferry Hd. (Houte 156), Waterfoni, CT 06385

., Nuclear Energy uawme Noaca,iwer stauon Northeant Nuclear F.nergy Comgany P.o. IW 128 Waterford, Cr 06385 0128 (860) 447-1791 Fax (860) 444 4277 The Northeast Utdities System

,[ February 10,1997 Docket No. 50-245 B16035 Re: 10CFR50.73(a)(2)(ii)  !

U.S. Nuclear Regulatory Commission Document Control Desk i

Washington, DC 20555 j

[ This letter forwards supplemental Licensee Event Report (LER) 94-020-01, documenting an

! event that occurred at Millstone Nuclear Power Station, Unit No I on May 27,1994. This LER

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

I l This supplemental LER updates the information contained in the Cause and the Corrective Action  !

section. There are also some editorial and administrative changes.

)

i

The following are Northeast Nuclear Energy Company's (NNECO's) commitments made .

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

j B16035-1 NNECO cc,mmits to systematically review the Heating, Ventilation, and Air i- Conditioning (HVAC) Systems which provide temperature controls for areas in which safety-related equipment is located at Millstone Unit No. I to ensure that operation of HVAC system / equipment will provide adequate temperature control

. for the operation of safety-related equipment and/or structures in appropriate i

scenarios. This review shall include, but is not limited to, both normal operation and Loss of Normal Power scenarios. Results of this review shall be incorporated y into applicable engineering design documents and plant operations procedures.

This review is scheduled for completion during Refueling Outage (RFO) 15 as part of the 10CFR50.54(f) review.

i

. B16035-2 NNECO ccmmits to replace the non-QA non-redundant ventilation system of the  !

intake structure with Class IE, QA, redundant roof' exhaust fans and controls by I l j the comr>1etion of RFO 15. /

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9702130079 970210  ? /

PDR. ADOCK 05000245 '

s S PDR (EH22-5 itE:V.12-93

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L U.S. Nuclear Regulatory Commission B16035\Page 2 of 2 .

B16035-3 NNECO commits to replace the Emergency Service Water strainer motor circuit components which are not designed for the elevated temperatures (i.e., the thermal  :

overload relays and the auxiliary relays) by the completion of RFO 15.

B16035-4 The 10CFR50.54(f) effort will review all proposed modifications deleted by Integrated Safety Assessment Program and verify that the cancellation of such modifications did not adversely impact the unit design basis and/or Systematic l

Evaluation Program commitments by the completion of RF015. i

?

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY

/O xl )

P. D. Hinnenkamp V Director, Unit Operations j i

I l

Attachment:

LER 94-020-01 l cc: Dr. W. D. Travers, Director, Special Projects H. J. Miller, Region I Administrator S. Dembek, NRC Project Manager, Millstone Unit No.1 l T. A. Eastick, Senior Resident Inspector, Millstone Unit No. I I

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