ML20092H730

Advises That Due to Economic Conditions,Util in Process of Changing Current 18-month Refueling Cycle to 24 Months,Per Generic Ltr 91-04.Expected TS Change Request Submittal Dates for All Units Listed

ML20092H730
Person / Time
Site:	Peach Bottom, Limerick
Issue date:	02/11/1992
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-91-04, GL-91-4, NUDOCS 9202210304
Download: ML20092H730 (2)

Text

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PlilLADELPillA ELECTRIC COMl'ANY NUCLEAR GROUP liCA0 QUARTERS 955 65 CIIESTERDROOK BLVD.

WAYNE, PA 19087 5691 (215) 640-6000 1

NUCtIAR ENGINEERING & $0RVICES DEPARTMENT February 11, 1992 Docket Nos. 50-277 50-278 50-352 50-353 License Nos. DPR-44 DPR-56 NPF-39 NPF-85 U. S. Nuclear Regulatory Commission Attn Document Control Desk Washington,_DC 20555

Subject:

Peach Bottom Atomic Power Station, Units 2 and 3 Limerick Generating Station, Units 1 and 2 Conversion to 24 Month Refueling Cycles Gentlemen:

Philadelphia Electric Company (PECo), because of the economic benefits associated with a longer fuel cycle, is in the process of changing the operation of each of Limerick Generating Station (LGS),

Units 1 and 2, and Peach Bottom-Atomic Power Station (PBAPS), Unita-2 and 3, from the current 18 month refueling cycle to a 24 month refueling ~ cycle. Implementation of this change involves loading impre"ed reactor fuel into each of the four nuclear units, which began with LGS Unit 2 in the Spring of 1991 and will be completed with PBAPS Uni' 2 in the fall of 1992. In order to accommodate a 24-month refueling cycle at LGS and PBAPS, PECo is preparing submittals to request changes to the Technical Specifications (TS) required survei.11ance . intervals from 18 months to 24 months in accordance with the guidance in NRC Generic Letter (GL) 91-04, " Changes in Technical Specification Surveillance Intervals to Accommodate a 24-Month Fuel Cycle," dated April 2, 1991.

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PBAPS, Unita 2 and 3- February 11, 1992 LGS, Units 1 and 2. Page 2 Conversion to 24 Month Fuol Cycles Based on-our evaluation of the TS,.we have formed-three

" groupings" of-TS surveillances requiring a change to implement a 24 month refuelingLcycle. Three TS; change request submittals will be _

prepared based on the three groups. Group 1 TS surveillances are the highest priority and require a TS change to elimistate the performance of these TS surveillances during a mid-cycle unit outage. For example, this group includes any TS surveillances requiring an open

. reactor vessel or thoso which are supported by equipment refurbishment turnaround times which cannot be met during a mid-cycle unit outage.

Group 2 TS surveillances are all other TS surveillances except those

=related to instrumentation. Within this overall group, TS are combined together into smaller groups due to a common element of the TS line items. For example, all pump, valve, and flow testing surveillances are grouped together, Group 3 includes instrumentation TS surveillances. These survoillances are grouped together because of theJspecific guidance provided in GL 91-04 with regard to the evaluations necessary to support instrumentation surveillance changes.

For your information, below is a listing of the expected TS change request submittal dates for both LGS and PBAPS:

April 1992 - Group 1, June 1992 - Group 2, and July 1992 - Group 3.

In addition, PECo will submit any other types of requests (e.g.,

exemption requests), determined necessary from our continued review and evaluation during this refueling cycle change process, on an as needed basis.

If you have any questions, please do not hesitate to contact us.

Very truly yours,

/ .nf Manager Licensing Section cc: T. T. Martin, Administrator, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector, LGS J. J. Lyash, USNRC Senior Resident Inspector, PBAPS

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