ML19340C281

LER 80-060/03L-0:on 801010,plant Protective Sys Battery Charger/Inverter Tripped.Caused by Noise Spike Exceeding Inverter High Voltage Trip Level.Trip Level Is Too Sensitive to Noise.Modified Trip Circuit Will Be Installed

ML19340C281
Person / Time
Site:	Fort Saint Vrain
Issue date:	11/10/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19340C279	List: ML19340C278 ML19340C281
References
LER-80-060-03L, LER-80-60-3L, NUDOCS 8011140411
Download: ML19340C281 (1)

Text

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Ev ENT DESCRIPTION AND P AOS ABLE i rie:rJJENCES h lol O l Soninterruptible bus 3, t: e E tant Protective Svstem barterv charrer/ inverter triered I gol3; I while the reaCter was at power. operation with the inverter out of service consti- l l

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OAUSE OESCR: PTICN ANO CC ARECTIVE ACTIONS h I ) l l 3atterv was on overcharge at time of main turbine generator trio: noise s ike ex- 1 l- ,-} lceeded the inverter high voltaze trip level. Trio circuit i= too sensitive r me . I

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