ML20004D967
| ML20004D967 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 06/01/1981 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Dolan J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| Shared Package | |
| ML20004D968 | List: |
| References | |
| NUDOCS 8106100419 | |
| Download: ML20004D967 (6) | |
Text
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- REC UNITED STATES
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-y g NUCLEAR REGULATORY COMMISSION C
WASHINGTON, D. C. 2055P g 's*-
.:ie June 1,1981 gm 4
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Docket Nos. 50-315
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' and 50-316 2_1 JUIl 0 91981 w$
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N Mr. John Dolan, Vice President Indiana and Michigan Electric Company TD Post Office Box 18
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Bowling Green Station New York, New York 10004
Dear Mr. Dolan:
We have reviewed the responses in your letters of December 17, 1979, May 28, 1980 and January 27, 1981 to our August 8,1979 letter on the adequacy of,
the station electrical distribution system voltages for the Donald C. Cook-Nuclear Plant Units Nos.1 and 2.
In your responses you committed to install, at the next maintenance shutdown undervoltage protection relays on 4 kv buses A and D for Unit 1 and Unit 2 with a voltage setting of 89.9% with a two minute time delay and to modify the existing undervoltage relays at the 4 kv buses for a voltage setting of 79.9% with a two second time delay.
Subject to your completion of these modifications, we find the voltage analysis and test results submitted are aci:eptable for meeting our positions on the adequacy of station electric distribution system voltages.
Our Safety Evaluation Report (SER) and the Technical Evaluation Report (TER) prepared by our consultant EG&G Idaho, Inc. are enclosed for your infor-mation.
The implementation of the modifications for the station electrical distri-bution system voltages will be reviewed by the Office of Inspection and Enforcement.
Sincerely, 7
! ;\\
Q i
i D LUCo,I Nt N:k)iLYr5
.iteven M Varga; Chi. %
ef Operating Reactors Branch #1 Division of Licensing Enclosures :
1.
SER 2.
TER cc w/ enclosures:
See next page 81 s ts i o,419 nv e
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--w-v
' *. Jch'n Oclan Irdiar,a and Michigan Electric Cc:;any I
.' Mr. Robert W. Jurgensen cc:
Chief tiuclear Engineer American Electric Pcwer Service Corporation 2 Broadway New York, New Ycrk 10004 2
C.rald Charnoff, Esquire Snaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.
Washington, D. C.
20036 Maude Preston Palenske Memorial Library 500 Market Street St. Jcseph, Michigan 49035 Mr. D. Shaller, Plant Manager Donald C. Ccck Nuclear' Plant P. O. Box 458 Eridgman, Michigan 49105 U. S. Nuclear Regulate y C:r.-issica Resicer: !r.spectors Office 770 Red Arrow Highway Stevensville, Michigan 49127 William J. Scanien, Esquire 2024 Pauline Eculevard Ann Arber, Michigan 45103 e
P00R ORIG! Nil e
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