ML20236S318

Ro:On 870804,diesel Generators 2A & 2B Exceeded 11 Allowable Time to Achieve 4160 Volts Ac.Rept to Be Submitted on 871112 Will Be Submitted on 871125 to Include Delayed Info,Per Regulatory Position c.3.b.of Reg Giude 1.108,Rev 1

ML20236S318
Person / Time
Site:	Mcguire
Issue date:	11/12/1987
From:	Tucker H DUKE POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
RTR-REGGD-01.108, RTR-REGGD-1.108 NUDOCS 8711250054
Download: ML20236S318 (1)

Text

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DUKE POWER GOhiPANY P.O. Box 33180 CHARLOTTE, N.O. 28242 4

HALB. TUCKER TELEPHOPrc

.vsumpassmemy (704) 373-6531 wuos. sam encouerms i

g November 12, 1987 i

1

[ U.S. Nuclear Regulator Commission p V % cudenP Control ~De d"y?".?

[ ~ Washington, D.C. 20555 r

j

Subject:

McGuire Nuclear Station

! Docket No. 50-370

, Technical Specification 4.8.1'.1.3 and 6.9.2 Gentlemen:

Pursuant to Technical Specification (T.S.) 6.9.2 as specified by T.S. 4.8.1.1.3, please be advised that Diesel Generator (D/G) 2A and 2B exceeded the 11 second maximum allowable . time to achieve 4160 VAC. Also, please be advised that the number of . failures in the last 100 was 6. However, the Augugt_4, 1987 valid failure of D/G 2B wa's the 7th valid failure in the last 100 valid tests. Our September.3, 1987 submittal describing this incident did not contain the required Supplemental information due to a miscount of valid failures; therefore, pursuant to Regulatory Position c.3.b. of Regulatory Guide 1.108, Rev. 1, August 1977, the report that was to be submitted on November 12, 1987 will include the supplemental information and has been delayed to November 25, 1987.

Should there be any questions concerning this matter, please contact Steve LeRoy of our Licensing staff'at (704) 373-6233.

Very truly yours,

<::r~ ./ / 4# - -

Hal B. Tucker SEL/171/j gc Attachment xc: Dr. J. Nelson Grace INPO Records Center Regional Administrator, Region II Suite 1500 U.S. Nuclear Regulatory Commission 1100 circle 75 Parkway 101 Marietta St., NW, Suite 2900 Atlanta, GA 30339 Atlanta, GA 30323 Mr. Darl Hood Mr. W.T. Orders U.S. Nuclear Regulatory Commission NRC Resident Inspector Office of Nuclear Reactor Regulation McGuire Nuclear Station -

l Washington, D.C. 20555 8711250054 871112 lgl 0 PDR S

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