Part 21 Report - 1997-821

LICENSEE: SIEMENS POWER CORPORATION SITE: SIEMENS POWER CORPORATION EN NUMBER:33377 DOCKET: EVENT DATE: 10-16-97 RX TYPE: EVENT TIME: 12:00 VENDORS: NOTIFY DATE: 12-10-97 EMERGENCY CLASS: N/A REGION: 4 STATE: WA TIME: 11:07 OPS OFFICER: DOUG WEAVER 10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH PART 21 - POTENTIAL TO EXCEED OPERATING LIMITS AT LASALLE UNIT 2 SIEMENS ORIGINALLY NOTIFIED THE NRC OF THIS ISSUE WITH AN INTERIM REPORT DATED 10/16/97. FURTHER EVALUATIONS OF THE INTERIM REPORT HAVE IDENTIFIED THE OPERATING LIMITS FOR LASALLE UNIT 2, CYCLE 8 COULD BE EXCEEDED AT LOW POWER, HIGH FLOW, AND WITH CERTAIN EQUIPMENT OUT-OF-SERVICE. THE STARTUP FOR CYCLE 8 HAS BEEN DELAYED UNTIL OF THE FALL OF 1998. THEREFORE, THE PLANT HAS NEVER OPERATED UNDER THE CONDITIONS ANALYZED. COMMONWEALTH EDISON HAS BEEN NOTIFIED OF THIS DEFECT AND HAS BEEN PROVIDED WITH REVISED LIMITS. THE IMPACT ON OTHER POTENTIALLY AFFECTED LICENSEES WAS EVALUATED. THE LICENSEE CONCLUDED THAT ALL OTHER LIMITS SUPPORTED BY SPC ANALYSES REMAIN APPLICABLE.

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