ML20203B369

Part 21 Rept Re Potential to Exceed Operating Limits.Cycle 8 Delayed Until Fall 1998

ML20203B369
Person / Time
Site:	LaSalle
Issue date:	12/10/1997
From:	SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER
To:	NRC
References
REF-PT21-97 NUDOCS 9712150019
Download: ML20203B369 (2)

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l U.S. Nuclest Regulatory Commission Washington, D.C.

Attachment to Siemens Po.EgLCgporation - Nuctsar Division 10 CFR Part 21 Resort IFuel Cvele arad Mtiterlats Event Notification Worksheet/NRC Form 351 A1 of December 10,1997, to CFR Part 21 Notification of Defect Relative to Transient Analyses at Exposures Prior to End of Cycle During the evaluation of the potentiti defect identified in Reference 1, it was determined that the operating limits for LaSalle Unit 2, Cycle 8 could have been exceeded during operation at low power, high flow, and with certain equipment out of service. Note that etartup for Cycle 8 has been delayed until the Fall of 1998. Therefore, the plant has never operated under the conditions analyzed. Commonwsalth Edison has been notified of this defect and has been provided with revised limits.

Additionally it should be noted that the impact on other potentially affected licensees was evaluated. It was concluded that all other operating limits supported by SPC analyses remain applicable.

Ret.1: Letter .is Holm (SPC) to Document Control Desk, " Interim Report of Evaluation of a Deviation Pursuant to 10 CFR 21.21(all2)," dated October 16,1997.

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9712150019 971210 ' '

PDR ADCCK 05000373 8 PDR- i

GENERAL INFORMATION or OTHER EVENT NUMBER: 33377 LICENSEE: SIEMENS POWER CORPORATION NOTIFICATION DATE: 12/10/97 CITY: RICHLAND REGION: 4 < NOTIFICATION TIME: 11:07 [ET)

COUNTY: STATE: WA 8 VENT DATE: 10/16/97 LICENSE #: SNM-1227 AGREEMENT: Y EVENT TIME: 12 : 00 (PST)

DOCKET: LAST UPDATE DATE: 12/10/97 NOTIFICATIONS JAMES CREED RDO NRC NOTIFIED BY: LOREN MAAS NRR

,VERN HODGE HQ OPS OFFICER: DOUG WEAVER EMERGENCY LLASS: NOT APPLICABLE 10 CFR SECTION:

CCCC 21.21 UNSPECIFIED PARAGRAPH EVENT TEXT -

PART 21 - POTENTIAL TC 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. TilEREFORE, 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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