Part 21 Report - 1996-541
LICENSEE: COMMONWEALTH EDISON CO.
SITE: LASALLE 1 2 EN NUMBER:30999
DOCKET: 05000373 05000374 EVENT DATE: 09-11-96
RX TYPE: BWR BWR EVENT TIME: 00:01
VENDORS: GE-5 GE-5 NOTIFY DATE: 09-13-96
EMERGENCY CLASS: N/A REGION: 3 STATE: IL TIME: 10:43
OPS OFFICER: CHAUNCEY GOULD
10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH
UNIT SCRAM RX INIT INITIAL MODE CURR CURRENT MODE
CODE CRIT PWR PWR
1 N Y 100 POWER OPERATION 100 POWER OPERATION
2 N Y 82 POWER OPERATION 82 POWER OPERATION
THE LICENSEE FOLLOWED UP ON A PROBABLE PART 21 THAT WAS SUBMITTED
BY GENERAL ELECTRIC NUCLEAR ENERGY (GE-NE).
THE NOTIFICATION SUBMITTED BY GE-NE PROVIDED THE RESULTS OF AN
EVALUATION MADE BY GE-NE OF REPORTED FAILURES OF THE
INSTANTANEOUS TRIP FUNCTION OF THE GE TYPE RMS-9 OVERCURRENT TRIP
DEVICE PROGRAMMERS. THESE DEVICES WERE MANUFACTURED BY GE
ELECTRICAL DISTRIBUTION AND CONTROL, AND SUPPLIED BY GE-NE AS
SAFETY RELATED COMPONENTS FOR BALANCE-OF-PLANT OR UNSPECIFIED
APPLICATIONS. SINCE THE APPLICATIONS AND ASSOCIATED SAFETY
FUNCTIONS OF RMS-9 PROGRAMMERS SUPPLIED BY GE-NE ARE NOT KNOWN,
IT IS NOT POSSIBLE FOR GE-NE TO EVALUATE THE SAFETY SIGNIFICANCE
OF A POSSIBLE FAILURE.
LASALLE EVALUATED THE GE REPORT AND HAS DETERMINED THAT THE
DEFECT/NONCOMPLIANCE IS REPORTABLE UNDER THE REQUIREMENTS OF
10CFR21.
GE-NE HAS LISTED APPROXIMATELY 27 PLANTS THAT ARE AFFECTED.
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