ML19340B195

LER 80-034/03L-0:on 800908,during Routine insp,4160-volt Breaker RHR Id Found Not Capable of Closing Automatically. Caused by Failure of GE Magna Blast 4160 Vac Breaker to Charge Rendering Pump Inoperable.Switch Replaced

ML19340B195
Person / Time
Site:	Cooper
Issue date:	10/01/1980
From:	Bednar L NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19340B188	List: ML19340B187 ML19340B195
References
LER-80-034-03L, LER-80-34-3L, NUDOCS 8010210639
Download: ML19340B195 (1)

Text

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('~} e 9 V NRC FtRM 366 U.S. NUCLEAR REGULAT4RY COMMISSION 87 77) l LICENSEE EVENT REPORT CONTROL BLOCK: l t

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(PLEA &E PRINT OR TYPE ALL REQUIRED INFORMATION) lo l i8 l9 l N lLICENSEE 7 E l CCODE l P l Rl 1l@15 Ol 0l-14 l 0NUVSER LICENSE l 0 l 0 l O ! -25l O26l 01LICENSE 0l@l4 TvPE l1Jo l157l1l1lh!

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. CON'T i 10111 $% l Ll@l015 -10OOCKET l010NUVSER l 219 l 8h8@l69O l 910181 81 0@li l oREPORT l O DATE l 1l A l80olh 7 6 60 61 . EVENT OATE 14 IS EVENT DECCRIPTION AND PROBABLE CONSEQUENCES h 1 o l 21 During routine plant inspection, an operator observed that 4160V breaker RHR 1D wan l l

l0l31 pot Capable of automatically closing; i.e. the closing spring was compressed (chara-l 1014 l pd). Redundant systems were available. This event had no effects upon oublic health l

!o!sl br safety. R.T.S. 3.5.A.3 I Io is I l l 10171l 1 101811 I r 8 a 80 CE CODE SL '! CE COVPONENT CODE SLBC O'E 5 E i R lC lF l@ [dh ~ l B .lh l C l K l T l B i R l K lh l E lh [Z_j h r 8 9 10 11 12 13 ts 19 20 l SEQUE N TI AL OCCURRENCE REFORT R E VISION l LER RO _EVENTvfAR REPORT NO. CODE TYPE NO O agg s 18101 1-1 1 01 31 41 W 10131 ILI L--J 101

_ 21 22 23 24 26 27 N 29 30 J1 32 TAM N A ON ON PL NT VE HOURS S8 i FOP 8. SUPPL UANUFACTURER lEl@lHl@ l35Z l@ [ljh l 010 l 0 l 0 l W@ l l@ l4?A l@ l44G l O l 8 l Ol@

l JJ J4 36 33 40 48 42 47 i CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l

Iiiol((he General Electric Manna Blast 4160 VAC breaker for RHR oumn ID failed to charee i LLLLI bud _made the numo inonerable. The latch monitorino switch diel nne <-1nca n%v hvont I i l21 pr tripped. The switch was replaced and the bracket for the spring release solenoid I g [was adjusted. I I

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STA S  % POWER OTHER STATUS OSO RY DISCOVERY DESCRIPTION W [y,J @ l1l Of 0l@l NA l lBl@l Operator Observation l A TIVITY CONTENT RELE ASED OF RELE ASE AMOUNT OF ACTivlTY LOCATION OF RELEASE LLl6J LIJ @ Lz.J@l NA l l NA l 7 8 ') 10 ' I1 44 45 80 PERSONNEL EXPOSURES NUURER DESCRIPTION l i 17' 'l l 0] 0l 0lhlTYPEZlhl

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~ NAME OF PREPARER L. F.' Bednar PHONE:

402-825-3811  ?

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