IR 05000423/1987002

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Forwards Insp Rept 50-423/87-02 on 870106-0217.No Violations Cited.Limited Ability of Auxiliary Feedwater Sys to Pump Design Basis Vol of Demineralized Water Storage Tank to Steam Generators Will Receive Further Insp
ML20207R051
Person / Time
Site: Millstone Dominion icon.png
Issue date: 03/04/1987
From: Wenzinger E
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To: Mroczka E
NORTHEAST NUCLEAR ENERGY CO.
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ML20207R052 List:
References
NUDOCS 8703110117
Download: ML20207R051 (2)


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NAR 04 1Wi Docket / License: 50-423/NPF-49 Northeast Nuclear Energy Company ATTN: Mr. Edward J. Mroczka Senior Vice President, Nuclear Engineering and Operations P.O. Box 270 Hartford, Connecticut 06141-0270 Gentlemen:

Subject: Millstone 3 Routine Inspection 50-423/87-02 (1/6/87-2/17/87)

This transmits the report of the above subject inspection by Messrs. J. Shediosky and F. Casella of this office. No violations were cited, and no reply to this letter is required. The inspection findings have been discussed with Messr S. Scace and C. Clement of your staf During this inspection period, the actions of your staff to investigate and resolve the low suction pressure trips of the motor driven Auxiliary Feedwater pumps were examined along with the action taken following reactor trips on January 13 and 1 We found that your staff responded to the Auxiliary Feedwater problem in a detailed and timely manner. The tests which were conducted not only resolved the m:estions raised by the pump motor trips occurring during surveillance testing, but also disclosed a deficiency which may have limited the ability of the Auxiliary Feed-water System to pump the design basis volume of the Demineralized Water Storage Tank to the steam generators. This aspect will receive further inspection coverag Thank you for your cooperatio

Sincerely, prisinal Signed ays Edward C. Wenzinger, Chief Projects Branch No. 3 Division of Reactor Projects Enclosure: NRC Region I Inspection Report 50-423/87-02

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MAR 0 4 W Northeast Nuclear Energy Company 2 cc w/ enc 1:

W. D. Romberg, Vice President, Nuclea'r Operations S. E. Scace, Station Superintendent -

E. R. Foster, Director, Generation Construction- '

R. M..Kacich, Manager, Generation Facilities' Licensing D. O. Nordquist, Manager of Quality Assurance V. Papadopoli, Construction Quality Assurance Supervisor Public Document Room (PDR)

Local Public Document Room (LPDR)

Nuclear Safety Information Center (NSIC)

NRC Senior Resident Inspector State of Connecticut

.bec w/ enc 1:

Region I Docket Room (with concurrences)

Management Assistant, DRMA (w/o enc 1)

DRP Section Chief J. Beall, SRI, BV-2 T. Rebelowski, SRI, Millstone 1&2 B. Doolittle, LPM, NRR R. Bores, DRSS

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0FFICIAL RECORD COPY