ML20134F139
| ML20134F139 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 01/30/1997 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9702070294 | |
| Download: ML20134F139 (1) | |
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A 10 CFR 50.46 v
PECO NUCLEAR reco eme,ov cemnee, i
%5 Chestertwook Boulevard l
A Unit of PECO Energy Wayne PA 19087-5691 January 30,1997 1
Docket Nos. 50-277 50-278 l
License Nos. DPR-44 I
i DPR-56 I
U.S. Nuclear Regulatory Commission l
Attn: Document Control Desk i
Washington, DC 20555 i
Subject:
Peach Bottom Atomic Power Station, Units 2 and 3 10CFR50.46 Reporting Requirements
Dear Sir:
i General Electric Company (GE) had discussions with the NRC staff regarding reporting of changes and errors in approved ECCS evaluation models as required by 10CFR50.46(a)(3)(i) and (ii), and has informed us about these issues via GE letter to PECO Energy Company (PECO Energy) dated November 9,1996. Since the 1988 revision to 10 CFR 50.46, GE has been compiling all j
changes and errors in approved GE ECCS evaluation methods and providing that information to the N.T and to licensees on an annual basis. This letter j
provides the latest informat on 'nvolving Peach Bottom Atomic Power Station, Units 2 and 3 in accorda..ce w,th 10 CFR 50.46 (a)(3)(i) and (ii).
On May 31,1996, PECO Energy confirmed with GE that the total accumulation of peak clad temteisture (PCT) changes or errors identified as being applicable to PBAPS, Units 2 at d 3, is 45'F. After adding this value to the licensing basis PCT determined iri the 1993 SAFER analyses, there is still approximately 500*F i
of margin to the 2200*F limit specified in 10 CFR 50.46. The upper bound PCT also remains below the 1600*F limit specified in the NRC acceptance of the SAFERIGESTR methodology.
If you have any questions, please do not hesitate to contact us.
Very truly yours, j 0
. d.
G. A. Hunger, Jr.,, h.
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070065 Director - Licensing 1
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cc:
H. J. Miller, Administrator, Region I, USNRC W. L. Schmidt, USNRC Senior Resident inspector, PBAPS l
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