05000245/LER-1996-059, Forwards LER 96-059-00.Util Commits That Design Basis of Reactor Feed Pump High Level Trip Circuitry Will Be Reevaluated to Verify Proper Applicability of Physical Separation,Redundancy & Single Failure Requirements

Forwards LER 96-059-00.Util Commits That Design Basis of Reactor Feed Pump High Level Trip Circuitry Will Be Reevaluated to Verify Proper Applicability of Physical Separation,Redundancy & Single Failure Requirements

ML20132C568
Person / Time
Site:	Millstone
Issue date:	12/16/1996
From:	Hinnenkamp P NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20132C572	List: 05000245/LER-1996-059, Forwards LER 96-059-00.Util Commits That Design Basis of Reactor Feed Pump High Level Trip Circuitry Will Be Reevaluated to Verify Proper Applicability of Physical Separation,Redundancy & Single Failure Requirements
References
B16053, NUDOCS 9612180399
Download: ML20132C568 (1)

LER-2096-059, Forwards LER 96-059-00.Util Commits That Design Basis of Reactor Feed Pump High Level Trip Circuitry Will Be Reevaluated to Verify Proper Applicability of Physical Separation,Redundancy & Single Failure Requirements

Event date:
Report date:
2452096059R00 - NRC Website

text

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I  ; *\. Northerst Mat =,omm.a r v ury mi., nerfora, er i Utilities System ,,.o. m,1 128 Waterford, Cr 06385-0128 (203) 447-1791

) December 16,1996 Docket No. 50-245 B16053 Re: 10CFR50.73(a)(2)(ii) i U.S. Nuclear Regulatory Commission Document Control Desk j Washington, DC 20555

! This letter forwards Licensee Event Report (LER) 96-059-00, documenting an event that

. occurred at Millstone Nuclear Power Station, Unit No I on November 15, 1996. This LER is 4

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

t i The following is Nonheast Nuclear Energy Company's (NNECO's) commitment made within this

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

B16053-1 NNECO commits that the design basis of the Reactor Feed Pump (RFP) High Level Trip Circuitry will be reevaluated to verify the proper applicability of the physical

} separation, redundancy and single failure seguirements specified in the design change  !

documentation. Ifit is determined that these design requirements are valid for this l application, the RFP High Level Trip Circuitry will be modified to provide separate, redundant, and single failure proof vessel overfill protection. Ifit is determined that

these design requirements are not valid for this application, a design change will  ;

document this. This reevaluation and any potential plant modifications or design ]

change documentation will be completed prior to stanup for Cycle 16.

Very truly yours, -

I NORTHEAST NUCLEAR ENERGY COMPANY i

P. D. Hinnenkamp

. Director, Unit Operations )I i

Attachment:

LER 96-059-00 p cc: Dr. W. D. Travers, Director, Special Projects i H. J. Miller, Region I Administrator

S. Dembek, NRC Project Manager, Millstone Unit No.1 T. A. Eastick, Senior Resident Inspector, Millstone Unit No.1

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I 9612180399 961216 PDR ADOCK 05000245 l 8 PDR 4

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