Part 21 Report - 1997-140

LICENSEE: ILLINOIS POWER CO. SITE: CLINTON 1 EN NUMBER:31864 DOCKET: 05000461 EVENT DATE: 01-07-97 RX TYPE: BWR EVENT TIME: 00:00 VENDORS: GE-6 NOTIFY DATE: 02-27-97 EMERGENCY CLASS: N/A REGION: 3 STATE: IL TIME: 17:10 OPS OFFICER: RUDY KARSCH 10 CFR SECTION: CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE UNIT SCRAM RX INIT INITIAL MODE CURR CURRENT MODE CODE CRIT PWR PWR 1 N N 0 REFUELING 0 REFUELING A TRANSFORMER USED TO PROVIDE POWER TO A 1E 120 VOLT DISTRIBUTION PANEL IS UNSTABLE IF IT IS LOADED WITH LESS THAN 2 AMPS. THIS IS CONTRARY TO THE REQUIREMENTS OF THE PURCHASE SPEC. THE TRANSFORMER (MODEL NUMBER P3C015C6/EAN GUARDIAN POWER CONDITIONER) IS MANUFACTURED BY PHOENIX POWER SYSTEMS. THE TRANSFORMER TRIPPED OFF WITH THE ADDITION OF A STEP LOAD FROM A LOW OR NO LOAD CONDITION. THIS FAILURE COULD RESULT IN THE LOSS OF POWER TO SAFETY-RELATED LOADS.

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