ML18142B900

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LER 1975-010-00 for R. E. Ginna, Unresponsive Emergency Generator Governor Control Switch
ML18142B900
Person / Time
Site: Ginna Constellation icon.png
Issue date: 12/02/1975
From: White L
Rochester Gas & Electric Corp
To: O'Reilly J
NRC/IE, NRC Region 1
References
LER 1975-010-00
Download: ML18142B900 (8)


Text

NRC "TRIBUTION FOR PART 50 DOCKf MATERIAL (TEMPORARY FORM)

CONTROL NO'ILE INCXDENP REPORT FXI FROM: Rochester Gas 6 Elec Co DATE OF DOC DATE REC'D LTR TWX RPT OTHER

'Rochester,'Y'O 12-2-75 12-10-75 OR/G CC OTHER SE Mr O'Reilly none signed SENT LOCAL PDR CLASS UNCLASS PROP INFO INPUT NO CYS REC'D DOCKEl NQ:

1 50'-244 DESCRIPTION: ENCLOSURES:

Ltr, trans the following.: Unusual Event Report 875-10 .on failure of the governor 11-6-75'oncerning control switch oui the. generator.,wattm6ter.......

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A QP I IAII ROCHESTER GAS AND ELECTRIC CORPORATION ~ 89 EAST AVENUE, ROCHESTER, N.Y. 14649 I EON D. WHITE. JR. TT,'I.CP>IORC VICC PRCSIDCt4T ARCA CODC 7IC 54G.2700 December 2, 1975

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@gal Mr. James P. O'Reilly, Director ONl4llSS ION fg > Mal/ Sec+g U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement . Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

Subject:

Unusual Event 75-10, Unresponsive. Emergency Generator Governor R. E. Ginna Nuclear Power Plant, Unit No. 1 Docket No. 50-244

Dear Mr. O'Reilly:

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In accordance with Technical Specifications, Article 6.6.2b, the attached report of Unusual Event 75-10 is hereby submitted. Two additional copies of this letter and the attachment are enclosed.

Very truly yours, Zl av L. D. White, Jr. Pc x V Vl OD CI Attachment cc: Mr. Donald F. Knuth (30) ~l f)(o Mr. William G. McDonald (3) i3'742

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LICENSEE EVENT. FIEPOR CONTROL BLOCK:

'0 (PLEASE PRINT ALL REQLIIRED INFORMATION)

'. 1 ICENSEE LICENSE EVENT NAME LICENSE NUMBER 'YP- TYPE Qog N Y R E G 1 0 0 0 0 0 0 0. 0 0 4 1 1 1 1 ~03

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7 89 14 15 25 26 31 32 REPORT REPORT CATEGORY TYPE SOURCE EVENT OATE REPORT OATE

[oa~jcoss L ~I 0 5 0 0 2 4 4 .

1 1 0 6 7 5 1 2 0 2 7 5 7 8 57 58 59 60, 61 68 69 74 75 80 EVENT DESCRIPTION Jog urin erformance of PT-12. 1 Emer enc Generator lA immediatel followin close and]

7 8 9 80

~03 trip of a service water pump breaker, the generator wattmeter indicated no response to 7 89 ~

80 tOp~] peration of the governor control switch. During operation of the phase current selector 7 9 9 80 Iong switch to check currents the meter indication changed to about full load, and su~bsequent 7- 89 gg anipulation of the governor cont.ol verified proper response. (Unusual Event 50-244/75-80 7 8 9 SYSTEM CAUSE PIEME COMPONENT COMPONENT l 0), 80 CODE COOE COMPONENT CODE SUPPLER MANUFACTURER VIOLATION

~pr ~PE ~p Q E N E R A A A 1 5 2 N 7 8 9 10 11 12 17 . 43 44 47 48 CAUSE DESCRIPTION t00I. NA 7 8 9 80

~09 Recommended actions to determine the cause and remedial action taken are given on the 7 8 9 Q~o] attached sheet.

7 89 80 FACIUTY METHOO OF STATUS POWER OTHER STATUS OISCOVERY OISCOVERY DESCRIPTION

~E ~10 0 NA b NA 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 1 2 8 NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION IttsI ~00 0 E NA 7 8 9 11 12 13. 80 PERSONNEL INJURIES NUMSER OESCRlPTION IttsI ~00 0 NA 7 89 11 12 80 OFFSITE CONSEQUENCES 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Q~g H 7 89 10 80 PUBLICITY 7 89 80 ADDITIONAL FACTORS

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7. 89 80 7 89 80 NAME: Bruce A. Snow PHDNE.716/546-2700, ext. 291-214 Cr O 003. Ecv

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Licen.-.ee Event .Report Unusual Event 50-244/75-04 PORC Recommendations

1. Check wiring of emergency generator metering.
2. Perform test procedure PT-12.1 Emergency Diesel Generator 1A to the extent necessary to observe proper indicated response to generator governor control once each calendar week w'ith appropriate personnel 'o observe the generator start and operation, to include station mechanics and electricians. This is to begin on the following day, ll/7/75, and continue until the next scheduled monthly surveillance.

Remedial Action Taken

1. The appropriate personnel have checked and tightened all connections of the emergency generator metering wiring..
2. Satisfactory response has been demonstrated on each of the five tests conducted following the incident.

This action is being documented in Corrective Action Report CAR-1047.

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