05000313/LER-1980-041-03, /03L-0:on 801128,lead Dihydrogen Purge Supply Fan, VSF-30A,tripped.Caused by Blown Control Fuse Due to Overcurrent.Control Power Fuse & Control Transformer Increased to Accommodate Increased Load

/03L-0:on 801128,lead Dihydrogen Purge Supply Fan, VSF-30A,tripped.Caused by Blown Control Fuse Due to Overcurrent.Control Power Fuse & Control Transformer Increased to Accommodate Increased Load

ML19340D773
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/26/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19340D770	List: 05000313/LER-1980-041, Forwards LER 80-041/03L-0 05000313/LER-1980-041-03, /03L-0:on 801128,lead Dihydrogen Purge Supply Fan, VSF-30A,tripped.Caused by Blown Control Fuse Due to Overcurrent.Control Power Fuse & Control Transformer Increased to Accommodate Increased Load
References
LER-80-041-03L-01, LER-80-41-3L-1, NUDOCS 8101050336
Download: ML19340D773 (1)

LER-1980-041, /03L-0:on 801128,lead Dihydrogen Purge Supply Fan, VSF-30A,tripped.Caused by Blown Control Fuse Due to Overcurrent.Control Power Fuse & Control Transformer Increased to Accommodate Increased Load

Event date:
Report date:
3131980041R03 - NRC Website

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S n t,0 1 g.f t 80 EVENT DESCRIPTION ANO, ACB A3tE CONSEQUENCES h Unj ! During Mode 1 oneration, while perfoming a surveillance test on the Leadi Frm i ydrogen (H>) Purge system, the Lead H7 Purge Supoly Fan, VSF-30A, trippep.

H 101411 The T.S. 4.12.3 requirement for each circuit to b_e_ operated 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> Der i i c 1. I ! month was not met.

The Standby H2 Purge System remained operable.

1 i; ic i : Similar to LER's 50-313/80-009, 78-016_and 78-011 Peportable per i

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1ci l The cause of the f an trio was determined to be from a blown control fuse,i i 1 11 due to overcurrent.

Investication revealed a 222 Amo #an startinc currenti w Isurge and a 1 A o power fuse.

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