05000339/LER-1981-010-03, /03L-0:on 810113,w/unit at 100% Power,Overspeed Trip of Turbine Driven Auxiliary Feedwater Pump Occurred During Surveillance Testing.Caused by Failure of Turbine Governor to Control Speed.Governor Was Replaced

/03L-0:on 810113,w/unit at 100% Power,Overspeed Trip of Turbine Driven Auxiliary Feedwater Pump Occurred During Surveillance Testing.Caused by Failure of Turbine Governor to Control Speed.Governor Was Replaced

ML19343C052
Person / Time
Site:	North Anna
Issue date:	02/11/1981
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19343C044	List: 05000339/LER-1981-010, Forwards LER 81-010/03L-0 05000339/LER-1981-010-03, /03L-0:on 810113,w/unit at 100% Power,Overspeed Trip of Turbine Driven Auxiliary Feedwater Pump Occurred During Surveillance Testing.Caused by Failure of Turbine Governor to Control Speed.Governor Was Replaced
References
LER-81-010-03L, LER-81-10-3L, NUDOCS 8102180530
Download: ML19343C052 (1)

LER-1981-010, /03L-0:on 810113,w/unit at 100% Power,Overspeed Trip of Turbine Driven Auxiliary Feedwater Pump Occurred During Surveillance Testing.Caused by Failure of Turbine Governor to Control Speed.Governor Was Replaced

Event date:
Report date:
3391981010R03 - NRC Website

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LICENSEE EVENT REPORT CONTROL BLOCK / / / / / / / (1)

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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/V/A/N/A/S/2/ (2)

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LICENSEE CODE LICENSE NUMBER LICENSE TYPE CAT LL/ (6)

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(7)

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E DOCKET NUMBER EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)

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On January 13, 1981, with Unit 2 at 100 percent power, an overspeed trip of

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the turbine driven auxiliary feedwater pump occurred during surveillance

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testing. This event is reportable pursuant to T.S. 6.9.1.9.b.

Two redundant /

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motor driven auxiliary feedwater pumps were operable. The action statement of /

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the LC0 was met.

The public health and safety were not affected.

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SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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/H/H/ (11) LE/ (12) LB/ (13) /M/E/C/F/U/N/ (14) LZ/ (15)

/Z/ (16)

SEQUENTIAL OCCURRENCE REPORT REVISION LER/R0 EVENT YEAR REPORT NO.

CODE TYPE NO.

(17) REPORT NUMBER

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ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER LC/ (18) LZ/ (19) LZ/ (20) LZ/ (21) /0/0/0/0/ (22) LY/ (23) LN/ (24) /A/ (25) /W/2/9/0/ (26)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)

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The turbine governor failed to control the turbine speed properly. The cause /

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of the governor failure was not determined.

The governor was replaced and

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the turbine driven auxiliary feedwater pump was returned to operable status

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after being tested in accordance with T.S. and IWP requirements.

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FACILITY METHOD OF

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} DISCOVERY DISCOVERY DESCRIPTION (32)

STATUS

% POWER OTHER STATUS

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LE/ (28)

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NA

/B/ (31)

/ SURVEILLANCE TEST

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ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35)

LOCATION OF RELEASE (36)

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[Z/ (33)

LZ/ (34) /

NA

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NA

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PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION (39)

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NA

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PERSONNEL INJURIES NUMBER DESCRIPTION (41)

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NA

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LOSS OF OR DAMAGE TO FACILITY TYPE

DESCRIPTION

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NA

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PUBLICITY ISSUED DESCRIPTION (45)

NRC USE ONLY

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NA

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NAME OF PREPARER W. R. CARTWRIGHT PHONE (703) 894-5151 810 2 J.806 3 0