ML20236D274

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Forwards Safety Evaluation Accepting Util 851209,861117 & 870501 Requests for Deviations from Requirements of Reg Guide 1.97,Rev 2 Re Use of Category 3 Instrumentation. Request Re Category 2 Instrumentation Remains Open
ML20236D274
Person / Time
Site: Millstone Dominion icon.png
Issue date: 10/21/1987
From: Ferguson R
Office of Nuclear Reactor Regulation
To: Mroczka E
NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20236D277 List:
References
RTR-REGGD-01.097, RTR-REGGD-1.097 TAC-61354, TAC-65327, NUDOCS 8710280108
Download: ML20236D274 (1)


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f" l,1 October. 21', 1987'

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~' Docket' Nob 50-423.

a fMr.'Edwar JiMroczka f

'; Senior Vice Presidenti

! Nuclear Engineering' and Operationsi

Northeast Nuclear Energy CompanyJ LPost Office Box'270 l

. Hartford. CT 106141-0270f j

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Dear' Mr. Mroczka:

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SUBJECT:

$EGULATORY: GUIDE 1.97: CONTAINMENT SUMP WATER TEMPERATURES U

(TACNos. 61354l8.65327).

Millstone Nuclear Station's' Unit No. 3 Re:.

.By 1'etters da'ted December 9, 1985, November.17, 1986,' and May I'~1987 Northeast

'J Utilities submitted requests for deviations from the requirements-of Regulatory.

> Guide 1~.97; Revision 2, relating to the use'of Category 3 instrumentation to-monitor the" containment sump water temperature and a delay in-the' installation-z Lof, Category 2 containment: sump water ' temperature instrumentation for the-

' Millstone-: Nuclear l Power Station, Unit No. 3.e The May 1, 1987 letter requested a licenseLamendment to Lrevise the Millstone Unit No. 3.0perating: License NPF-49. License, Condition;2.C(6)'to.permitsuchdelay.

LThe'. staff is currently generically reviewing the need for Category 2' fin'strumentation to monitor the containment sump water temperature. The staff "has found

' review:is'your. Category 3 i_ instrumentation acceptable for operation while this ongoing. cTherefore we have concluded that license condition 2.C.(6) has

been met.and a lleense' amendment is not necessary. However, the issue of whether Category 2 instrumentation should.be provided shall remain open until the staff completes it generic review.

Enclosed is the staff's safety evaluation which documents the results of our review.

I Sincerely,

/s/

Pobert L. Ferguson, Project Manager 8710280108 871021 Project Directorate I-4 DR ADOCK 0500 3

p Division of Reactor Projects I/II l

Enclosure:

= As stated 0

cc w/ enclosure:

See next page DISTRIBUTION:'

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