ML20137C511

Submits Proposed Deferral Dates for Implementation of Solution in Response to GL 94-02, Long Term Solutions & Upgrade of Interim Operating Recommendations for Thermal Hydraulic Instabilities in Boiling Water Reactors

ML20137C511
Person / Time
Site:	Peach Bottom
Issue date:	03/19/1997
From:	Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-94-02, GL-94-2, NUDOCS 9703250026
Download: ML20137C511 (2)

Text

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Et: tion tupport Depsrtment 4 GL 9442

, :' v PECO NUCLEAR nwe-ec -

965 Chesterbrook Boulevard A Unit of PECO Energy Wayne. PA 19087-5691 March 19,1997 Docket Nos. 50-277 50-278 License Nos. DPR-44 DPR-56 )

U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington DC 20555

Subject:

Peach Bottom Atomic Power Station, Units 2 and 3 i I

Response to Generic Letter 94-02, "Long Term Solutions and Upgrade of interim Operating Recommendations For Thermal Hydraulic Instabilities in Boiling Water Reactors"  !

Gentlemen:

In a letter from PECO Energy Company (PECO Energy) to the U. S. Nuclear Regulatory Commission (USNRC) dated September 9,1994, PECO Energy provided our response to Generic Letter (GL) 94-02, "Long Term Solutions and Upgrade of interim Operating Recommendations For Thermal Hydraulic instabilities in Boiling Water Reactors." in the letter, PECO Energy proposed a schedule for implementation of the Enhanced Option 1-A Stability Solution at

' Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The schedule .

was based on preliminary information received from the Boiling Water Reactor  !

Owners' Group (BWROG) and contingent upon USNRC approval of the i BWROG methodology (NEDO-32339, " Reactor Stability Long Term Solution:

Enhanced Option 1-A").

Due to significant hardware delays (i.e., Period Based Detection System (PBDS)' 1

- and Flow Control Trip Reference (FCTR) cards), it is necessary to revise the schedule for submittog the associated License Change Application (LCA) to the USNRC and for . implementing the Enhanced Option I-A Stability Solution at l PBAPS, Units 2 and 3, as follows:  ;

.. f 97o325oo26 97o319 " N g((,) 3

'PDR ADoCK 05o00277? .l>

P .

PDR L.

pppsppsp.s.it

a

. March 19,1997 l

- Page 2 1 Original Forecast Data Projected Date PBAPS, Unit 2

- Submit LCA 1Q97 30/Ga

- Implement Solution I-A 3097 1 0/99 l PBAPS, Unit 3 -

} - Submit LCA 1 O98 3 0/98  !

- Implement Solution I-A 3098 1 0/99 The proposed deferral dates for implementation of the solution is based on: 1) hardware delivery delays (i.e., the PBDS and FCTR cards); 2) time needed to perform the Limerick installation and to incorporate lessons learned into the Peach Bottom design and installation package, and; 3) time needed to i accumulate operational experience before final implementation. We anticipate a i USNRC review period of six months following the LCA submittal. l I

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

Sincerely, k- f of .

G. A. Hunger, Jr.

Director - Licensing cc: H. J. Miller, Administrator, Region I, USNRC W. L Schmidt, USNRC Senior Resident inspector, PBAPS l

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