ML20155K466
| ML20155K466 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/08/1988 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| TAC-66899, TAC-66900, NUDOCS 8806210235 | |
| Download: ML20155K466 (2) | |
Text
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4.
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DUKE POWER Gonmxy l'.O. ISOX 33100 CHA14LOTTE. N.C. 20242 g,'
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n June 8, 1988 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
Subject:
McGuire Nuclear Station Units 1 and 2 Docket Nos. 50-369 and 50-370 Circuit Breaker Coordination (TACS 66899 and 66900)
Gentlemen:
By Mr. D.S. Hood's letter date May 4, 1988, the NRC requested Duke Power to advise the NRC of Duke's intentions and schedule with regards to circuit breaker coordination at McGuire.
This letter transmits the requested information.
As discussed with the McGuire AEOD evaluation team, Duke is reviewing breaker coordination calculations in accordance with the Analytical Model Review Control Procedure. This review was started in September 1987 and is currently due to be completed February 1989.
The McGuire breaker coordination calculations are being reviewed utilizing the Catawba criteria for breaker coordination.
This cri eria varies somewhat from that referenced in the NRC evaluation but provides a comparable level of protection.
As a result of this review any changes in equipment or breaker settings deemed necessary will be pursued through the normal design process.
The specific incident cited by the AEOD team did involve a maintenance configuration and not normal operational alignments.
It is for this reason l
Duke does not consider circuit breaker coordination to be a safety issue at 1
McGuire. As stated in the AEOD report, circuit breaker coordination is better I
I in the normal operating configuration.
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8806210235 000600 D
PDR ADOCK 05000369 Q
P PDR
,i
. 6, Document Control Dask June 8, 1988 Page 2 i
If there are any questions, please contact us through normal Licensing channels.
Ve7 truly yours,
.s b/ /
(
Hal B. Tucker JBD/270/ bhp l
l cc:
Dr. J. Nelson Grace i
Regional Administrator l
Region II U.S. Nuclear Regulatory Commission 101 Marietta St., NW, Suite 2900 Atlanta, Georgia 30323 i
Mr. Darl Hood U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, DC 20555 e
W.T. Orders NRC Resident Inspector McGuire Nuclear Station 4
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