05000298/LER-1980-014-03, /03L-0:on 800518,while Performing Sp 6.3.13.1, Relay 14A-K2B Was Found de-energized,preventing Start of Core Spray Pump on Normal Power.Superflous Contacts Were Inadvertently Left Connected in Core Spray Pump Circuits

/03L-0:on 800518,while Performing Sp 6.3.13.1, Relay 14A-K2B Was Found de-energized,preventing Start of Core Spray Pump on Normal Power.Superflous Contacts Were Inadvertently Left Connected in Core Spray Pump Circuits

ML19320A962
Person / Time
Site:	Cooper
Issue date:	06/16/1980
From:	Bednar L NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19320A961	List: 05000298/LER-1980-014, Forwards LER 80-014/03L-0 05000298/LER-1980-014-03, /03L-0:on 800518,while Performing Sp 6.3.13.1, Relay 14A-K2B Was Found de-energized,preventing Start of Core Spray Pump on Normal Power.Superflous Contacts Were Inadvertently Left Connected in Core Spray Pump Circuits
References
LER-80-014-03L, LER-80-14-3L, NUDOCS 8007080368
Download: ML19320A962 (1)

LER-1980-014, /03L-0:on 800518,while Performing Sp 6.3.13.1, Relay 14A-K2B Was Found de-energized,preventing Start of Core Spray Pump on Normal Power.Superflous Contacts Were Inadvertently Left Connected in Core Spray Pump Circuits

Event date:
Report date:
2981980014R03 - NRC Website

text

_ _ _ _ _ _ _ _ _ _ _

NRd. FORM 356 U.S. NUCLEAR REGULATORY COMMISSION (7 776 LICENSEE EVENT REPORT P) 1, I

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I I p (PLEASE PRINT oR TYPE ALL REQUIRED INFORMATION) s CONTROL 8tOCx:

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1 8 9 LICENSEE CODE 14 15 LsCENSE NUM8ER 25 26 LICENSE TYPE JO 57 CAT $8 CON'T j

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60 61 DOCK ET NUMBER 68 63 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h [TTTl puring refueling shutdown while performing SP 6.3.13.1, relay 14A-K2B was found de-l

,n,3, pnergized which would not allow starting a core spray pump on normal power with DG l

g o i 4 l ynd emergency power breakers racked out. This problem was caused by an extra contact l l o i s I p2b/EG2 connected in the #2 DG output breaker for Core Spray Pump 1B. Similar prob-I l o is 1 }em existed in the circ' !: for Core Spray Pump 1A. No significant occurrence took 1

(TT71 Place. This event had no effect upon public health and safety because the DG output I i O la i breaker and the emergency power breaker have never been racked out simultancously.

I 80 7

8 9 SYSTEM

CAUSE

CAUSE COMP.

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CODE TYPE NO.

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cnneeruc-I Iiiil bore sorav numn circuits af ter these circtif ts were revised during infein1 LL11_j Lion because of inadeauate control of construction activicies. The contacts were dis-4 f7TT1 l nnnocena nna envroce nnorneinn nf volnya 1&A-Y7A nnd 1&A-Y?R una veri ff od. Te una l

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• POWE R OTHER STATUS IS Oy RY DISCOVERY DESCRIPTION

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'J 10 it 44 45 80 PE ASONNEL f XPOSURES NUV8E R TYPE

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NAVE OF PREPARER PHONE:

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