05000333/LER-1980-040-03, /03L-0:on 800422,during Normal Operation,Lpci Independent Power Supply Inverter a Tripped.Caused by Gate Timing Card Failures.Gate Timing Card Was Replaced

/03L-0:on 800422,during Normal Operation,Lpci Independent Power Supply Inverter a Tripped.Caused by Gate Timing Card Failures.Gate Timing Card Was Replaced

ML19323F166
Person / Time
Site:	FitzPatrick
Issue date:	05/21/1980
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323F162	List: 05000333/LER-1980-040, Forwards LER 80-040/03L-0 05000333/LER-1980-040-03, /03L-0:on 800422,during Normal Operation,Lpci Independent Power Supply Inverter a Tripped.Caused by Gate Timing Card Failures.Gate Timing Card Was Replaced
References
LER-80-040-03L, LER-80-40-3L, NUDOCS 8005280605
Download: ML19323F166 (1)

LER-1980-040, /03L-0:on 800422,during Normal Operation,Lpci Independent Power Supply Inverter a Tripped.Caused by Gate Timing Card Failures.Gate Timing Card Was Replaced

Event date:
Report date:
3331980040R03 - NRC Website

text

U. S. NUCLEAR REGULATORY COhiMISSigRJ NT.C Fo8M 366 8(7 773 LICENSEE EVENT REPORT n

() CONTROL BLOCK: l l

l l

l l

lh (PLEASE PRtNT OR TYPE ALL REQUIREo INFORMATloN) 8 1

o j o j i j l N l Y I J ( A l F l 1 l@l0 10 l-lo !0 l0 l0 l -l 0l 0l 0l@l hlililIl1l@I l

3 7

8 9 LICENSEE CODE 14 15 LICENSE NUMSER 25 26 LICENSE TYPE 40 57 CAT Sa

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"'7 ACE l L @l 0 l 5 l0 l 0 l0 l 3 l 3 l 3 l@l 01 4 l 2 l 2] 8 l 01@l 0 ] S CON'T 7

8 60 61 DOCK ET NUYSE R 6a 69 EVENT OATE 74 75 REPORT OATE 80 O

EVENT DESCRIPTION AND pro 8ABLE CONSECUENCES h 10121 l Durina normal operation the "A" LPCI Independent Power Supply inverter tripped.

j lo t al l A second failure occurred on April 28, 1980.

In both cases the actions required I

l 10141 I by TS 3.9.F.2 were completed to verify the operability of LPCI power supply "B" The event did not i

I o I s J l and place the "A" system on the maintenance power source.

I t o is i i represent a significant hazard to the public health and safety.

l 10171 I I

l o ta l I 80 7

8 3 COMP.

VAtyg SYSTEV

CAUSE

CAUSE CODE CODE SUSCODE COMPCNENT CODE SUSCODE SU8 CODE lS lF l@ lE ]@ l G l@ l G l E l N l E [ R l A l@ lF l@ [ Zl@

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9 10 11 12 f3 18 19 20 REvtSION SEOU EN TI A L OCCURRENCE REFORT gg go EVENT YEAR REPORT NO.

CODE TYPE NO.

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R 21 22 2J 24 26 27 28 29 30 31 32 TA N AC ON ON PLANT HOURS 22 58 i POR h B.

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l Z lg l36Zl@ l0l0l0l0l l N jg l2Y [g l3A lg l E l3 l5 [6 g 33 34 JS 31 40 el 4

4 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i ) o 1 I Gate timing card failures were the cause of both inverter trips.

Replacement

]

li li j l of the gate t'iming card, filter capacitors and internal power supply corrected i

J lil7l l the problem.

Following each failure, the inverter was restored to operable l i l 31 l status on the following day.

No additional action is required.

i 1

11 I41 1 80 7

8 9 STA S

• . POW E R OTHER STATUS ISCO RV OISCOVERY OESCRIPTION l1 15llEl@ l0l7I3l@i NA l

lAl@l Operator Observation l

ACTivtTY COPTENT LOCATION OF RELEASE RELEASED OF RELEASE AMOUNT OF ACTIVITY l

l l

Sta I1 16 I W @ d@l NA 90 44 45 7

8 9 10 11 PERSONNEL ExPCSURES NuveER TYPE OESCRIPTION l

li171l01Ol0l@lZl@l NA PERSONNEL INJU IES NUMSER

DESCRIPTION

l li 141 l 010 l 0 lhl NA SO 7

8 9 11 12 LOSS OF OR OAMAGE TO FACILITY l.

Tv*E OESCRiP TION li 191 l Z lhl NA 80 7

8 9 10 NRC USE ONLY PUBLICITY iiilij 8 cosa so 6os i

i i i i i iii j g gogr'c"'"'~

NA 68 69 80 5 7

9 9 10 315-342-3840 f

W. Verne Childs puoys.

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