05000366/LER-1981-094-03, /03L-0:on 810921 & 27,diesel 2C Failed to Reach Rated Speed & to Respond to Speed Control When Shutdown Attempted.Caused by Low Oil in Diesel Governor & Shorted Brush in Governor Control Motor

/03L-0:on 810921 & 27,diesel 2C Failed to Reach Rated Speed & to Respond to Speed Control When Shutdown Attempted.Caused by Low Oil in Diesel Governor & Shorted Brush in Governor Control Motor

ML20011A599
Person / Time
Site:	Hatch
Issue date:	10/20/1981
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20011A594	List: 05000366/LER-1981-094, Forwards LER 81-094/03L-0 05000366/LER-1981-094-03, /03L-0:on 810921 & 27,diesel 2C Failed to Reach Rated Speed & to Respond to Speed Control When Shutdown Attempted.Caused by Low Oil in Diesel Governor & Shorted Brush in Governor Control Motor
References
LER-81-094-03L-01, LER-81-94-3L-1, NUDOCS 8110290168
Download: ML20011A599 (2)

LER-1981-094, /03L-0:on 810921 & 27,diesel 2C Failed to Reach Rated Speed & to Respond to Speed Control When Shutdown Attempted.Caused by Low Oil in Diesel Governor & Shorted Brush in Governor Control Motor

Event date:
Report date:
3661981094R03 - NRC Website

text

J NRC FORM 366 U. S. NUCLE AR REGUL ATOT.Y COMMISSION 87 77)

LICENSEE EVENT REPORT [l

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(PLEASE PRINT 02 TYPE ALL REQUIRED INFORMATioNI CONTRot sLoCK:

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1 8 9 LICENSEE CODE 14 15 LeCENSE NUMBER 26 26 UCENSE TYPE JO 57 CAT o8 CON'T

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8 60 61 DOCKET NUVSER 68 6'J EVENT D ATE 14 75 REPORT D ATE 80 EVENT DESCRtPTION ANo PROBABLE CONSEOLENCES h 1012 l l With the reactor in cold shuMown, the 2C liesel failed to reach rated l

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speed in 512 seSonds.

Then, on September 27, 1981, with the reactor at l

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96q, power, the 2C Diesel would not respond to the speed controller while l

l0 ls1 l attempting to shut the diesel down.

On both dates, the diesel was declared j

l0 lal I inop and the provisions of Tech Spacs 3.8.1.1 complied with.

This was a l

l 0 l 71 l non-repetitive event.

Public health and safety were not affected.

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10 11 12 13 18 19 10 SE QUE NTI AL OCCUR R E NCE REPORT R EVISIOtJ

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CODE TYPE NO.

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43 44 47 CAUSE DESCRIPTION AND CORRECTIV5 ACTIONS 1iioli The cause of failure on September 21. 1981. was due to low oil in the I

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diesel covernor.

Oil was added and the diesel run satisfactorily.

On I

lii2i l September 27, 1981, the failure was caused by a shorted brush in the gov-1 i a 1 ernor control motor. The brush was replaced and the diesel returned to I

mI service.

The governor has been replaced due to a slight oil leak.

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ACTIVITY CO TENT RELEASED OF RELE ASE AMOUNTOF ACTIVITY LOCATION OF RELE ASE [z_j @ [ zj@l

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DESCRIPTION

68 69 80 R. T. Nix, Supt. of Maint. m4hnM g

pggy, NAME OF PREPARER O

O LER No.: 50-366/1981-094 Licensee: Georgia Power Company Facility: Edwin I. Hatch Docket No. : 50-366

Narrative

Report for LER 50-366/1981-094. On September 21, 1981, with the reactor shutdown and while performing HNP-2-3801, the 2C Diesel failed to reach rated speed in 512 seconds. Then en September 27, 1981, with the reactor at 96% power, the 2C Diesel would not respond to'the speed controller while attempting to shut the diesel down. On both dates, the diesel was declared inop and the provisions of Tech Specs 3.8.1.1 complied with. The 2A and 2B Diesels were operable. This is a non-repetitive event. Puolic health and safety were not affected. The cause of failure on September 21, 1981, was due to a slight oil leak at the governor seal, which resulted in a low oil level in the governor. Oil was added and the governor scheduled for replacement. The die:el was then returned to service. Da September 27, 1981, the failure was caused by a faulty brush in the governor control motor. It appeared that the brush was sticking and not making direct contact with the motor commutator. The brush was replaced and the diesel returned to service. The complete governor has since been replaced and no further reporting will be required. A generic ruview revealed no inherent problems with any of the diesel generator governors. }}