ML20114B124
| ML20114B124 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/17/1992 |
| From: | Beck G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-88-01, GL-88-1, GL-89-10, NUDOCS 9208250036 | |
| Download: ML20114B124 (2) | |
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9 PHILADELPHI A ELECTRIC COM PANY NUC EAR GROUP HEADOUARTERS 955-65 CHESTERBRt OK BLVD.
WAYNE, PA 19087-5691 (zis) sao-sooo August 17, 1992 Docket Nos.
50-277 50-278 License Nos. DPR-44 DPR-56 U.S.
Nuclear Regulatory Commission Attn Document Control Desk Washington, DC 20555
Subject:
Peach Bottom Atomic Power Station, Units 2 and 3 Response to Generic Letter 88-01, "NRC Position on Intergrannular Stress Corrosion Cracking (IGSCC) in BWR Austenitic Stainless Steel Piping"
References:
(1)
Letter from D.
R. Helwig (PECo) to NRC-dated-June 4, 1990 (2)
Letter from R.
J. Clark (NRC) to G.
J.
Beck (PECo) dated April 24, 1991
-(3)
Supplement to Generic Letter 88-01 dated February 4, 1992
Dear Sir:
In Reference l),
Philadelphia Electric Company (PECo) provided a response to a NRC request for additional information related
.to Generic Letter (GL) 88-01, "NRC Position on Intergrannular Stress Corrosion Cracking (IGSCC) in BWR Austenitic Stainless Steel Piping."
Included in the response was a
justification for not performing the 100% inspection of the IGSCC susceptible Reactor Water Cleanup (RWCU) ' system welds located outside-containment.
This justification discussed the high radiation levels associated with the RWCU piping, the alternate l
leak detection methods already. in place, the ability to isolate the system if a leak is detected and the low safety significance of the system.
In Reference (2), the-NRC stated that elimination of the RWCU weld inspection was unacceptable, but that a supplement to GL 88-01 was planned which would set forth a revised staf f position on MO $
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.W tr. S.= Nuclear Regulatory,,>mmission August 17, 1992 PB Response?to:G. L.
88-01 Page 2 1
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RWCU-weld inspections.
In Reference (3), the NRC stated its revised position that an inspection of the IGSCC susceptible RWCU piping welds on a sampling basis of at least 10% of the weld
-population-should be performed during each refueling outage.
.PEco hereby commits to-following the staff position of 10%
weld inspection.
These inspections will be initiated during each unit's next refueling outage (2R09 and 3R09).
As suggested in Reference. (3),
PECo will pursue reduction of this 10% - - weld l:
Inspection following resolution of issues related to GL 89-10, i
" Safety-Related MOV Testing and Surveillance."
If you have questions concerning this matter, please do not hesitated to contact us.
Geor e J.
Beck l
Manager-Licensing Section l
Nuclear Services Department cc:
T. T.
Martin, Administrator, Region I USNRC
-J. : J..Lyash, USNRC' Senior Resident Inanector, PBAPS L
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