05000244/LER-1980-008-03, /03L-0:on 800910,during PT-12.2 Test for B Emergency Generator,Bus 16 Breaker Did Not Close.Caused by Guide Pin Split End Opening & Binding Control Relay Antipump Release Lever.Split End Closed

/03L-0:on 800910,during PT-12.2 Test for B Emergency Generator,Bus 16 Breaker Did Not Close.Caused by Guide Pin Split End Opening & Binding Control Relay Antipump Release Lever.Split End Closed

ML17309A102
Person / Time
Site:	Ginna
Issue date:	10/07/1980
From:	Edgar C ROCHESTER GAS & ELECTRIC CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17250A679	List: 05000244/LER-1980-008, Forwards LER 80-008/03L-0 05000244/LER-1980-008-03, /03L-0:on 800910,during PT-12.2 Test for B Emergency Generator,Bus 16 Breaker Did Not Close.Caused by Guide Pin Split End Opening & Binding Control Relay Antipump Release Lever.Split End Closed
References
LER-80-008-03L, LER-80-8-3L, NUDOCS 8010140482
Download: ML17309A102 (2)

LER-1980-008, /03L-0:on 800910,during PT-12.2 Test for B Emergency Generator,Bus 16 Breaker Did Not Close.Caused by Guide Pin Split End Opening & Binding Control Relay Antipump Release Lever.Split End Closed

Event date:
Report date:
2441980008R03 - NRC Website

text

NRC,PbRM 366

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U. S. NUCLEAR REGULATORYCOMMISSION

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80-008/03L-0 LtCENSEE EVENT REPOR~

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60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During performance of PT-12.2 for "B" Emergency Generator (EG) bus 16 breaker from B" EG did not close.

(T. S ~ 6. 9 ~ 2. b(2)) ~

"A" EG was started and tied into bus 1 8, 4

and was capable of supplying to redundant bus 14 in the event of a loss of off-site F

6 power.

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CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SVBCODE

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CODE TYPE NO.

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Q23 gJ QE pJ QEE 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

Binding condition of control relay anti-pump release lever guide pin.

Closing cir.

continuity was verified.

Breaker was observed during test operations, then control relay was replaced.

Breaker then tested successfully 5 times.

Removed relay was examined and guide pin split end was closed slightly, freeing binding condition.

ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ

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11 12 80 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

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