05000244/LER-2075-010, For R. E. Ginna, Unresponsive Emergency Generator Governor Control Switch

For R. E. Ginna, Unresponsive Emergency Generator Governor Control Switch

ML18142B901
Person / Time
Site:	Ginna
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: ML18142B901 (7)

LER-2075-010, For R. E. Ginna, Unresponsive Emergency Generator Governor Control Switch

Event date:
Report date:
2442075010R00 - NRC Website

text

TRIBUTION FOR PART 50 DOCK~MATERIAL (TEMPORARY FORM)

CONTROL NQ:

13583 FILE. XNCIDENZ REPORT FIT FROM.

Rochester Gas Imi Elec.

Co Rochester;.N;Y'..

e Jr DATE OF DOC 12-2-75 12-4-75 XXX DATE REC'D LTR TWX RPT OTHER TO:

James P.O'Reill ORIG Noae'C OTHFR 3

SENT AEC PDR SENT LOCAL PDR CLASS UNCLASS IlXX PROP INFO INPUT NO CYS REC'D

.3 DOCKET NO:

50-244 DESC R IPTION:

Letter trans the follwoing....

4 PLANT NAME:

RE Ginna 8

1

ENCLOSURES:

Unusual. Event Report h'. 75-10; on.1.1-6-75, Concerning a, Unresponsiye Emirgency Generator Govenor.........'. W/Attabbaierlt;.',/

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ROCHESTER GAS AND ELEC FRIC CORPORATION LEON D. WHITE. JII.

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II 89 EAST AVENUE, ROCHESTER, M.Y.

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631 Park Avenue King of Prus sia, Penn sylvania 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:

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, L. D. White, Jr.

Attachment cc:

Mr. Donald F. Knuth (30)

Mr. William G. McDonald (3)

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CONTROL. BLOCK:

1 LICENSEE EVENT REPORT (PLEASE. PAINT ALLREQUIRED INFORMATIDf)I)

LICENSEE NAME EVENT TYPE LICENSE TYPE 4

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1 1

1

~03 [oa]

)4 YREG 1

30 31 32 25 26 14 15 7

09 LICENSE NUMBER 00 0000'0 00 CATEGORY [OD1] CON'T~

7 8

57 58 REPORT REPORT TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE L

~I 0

5 0 0 2

4 4

1 1

0 6

7 5

2 0

2 7

5 59 60 61 68 69 74 75 80

EVENT DESCRIPTION

Jog urin erformance of PT-12. 1 Emer enc Generator 1A immediatel followin close and 7

0 9 00 [pg trip of a service water pump breaker, the generator wattmeter indicated no response to 7

0 9 80 [pg~] switch to check currents the meter indication changed to about full load, and subsequent 7

8 9 80 Qpg anipulation of the governor control verified proper response. (Unusual Event 50-244/75-10),

80 7

0 9 SYSTEM

CAUSE

CODE CODE COMPONENT CODE [oa~) ~EE

~F G

3 N

3 R

1) 7 8 9 10 11 12 17

~ CAUSE DESCRIPTION PRME COMPONENT SUPPUER COMPONENT MANUFACTURER A

1 5

2 43 47 40

~08 NA 7

8 9 00 Jog Recommended actions to determine the cause and remedial action taken are given on the 7

89 00 peration of the governor control switch.

During operation of the phase current selector 7

0 9

~10 attached sheet.

OTHER STATUS AMOUNT OF ACTIVITY 7

09 FACIUTY STATUS

% POWER

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~oo 14 7

8 9

10 12 13 FORM OF 7

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10 11 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

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89, 11.

12 13.

PERSONNEL INJURIES NUMBER

DESCRIPTION

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NA 7

09 11 12 OFFSITE CONSEQUENCES METHOD OF OISCOVEAY b

44 45 46 44 45 DISCOVERY DESCRIPTION NA LOCATION OF AELEASS NA 00 00 00 00 80 80

~15 7

09 LOSS OR DAMAGE TO FACILITY TYPE

DESCRIPTION

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7 09 10 PUBLICITY [is~]

7 89 ADDITIONAL FACTORS

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NA NA NA NA 00 00 80 80 7

09 NAME:

Bruce A. Snow 80'HDNE.716/546-2700, ext.

291-7'FO Sl 04)~

Licensee 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 with appropriate personnel to observe the generator start and operation, to include station mechanics and electricians.

This is to begin on the following day, 1 1/7/75, 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.

'his action is being documented in Corrective Action Report CAR-1047;

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