ML20198P597
| ML20198P597 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom, Limerick  |
| Issue date: | 01/14/1998 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-92-08, GL-92-8, NUDOCS 9801220169 | |
| Download: ML20198P597 (2) | |
Text
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s im w I'ico tvun y'y'Qgl anuoq ue,1998 Docket Nos. 50 277 50 278 50-352 50-353 License Nos. DPR 44 DPR 56 NPF 39 NPF85 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 Request for Additional Information Regarding Generic Letter 92-08,'Thermo-Lag 330-1 Fire Barriers *
References:
1)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated April 16,1993 2)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated December 29,1993 3)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated February 4,1994 4)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated December 19,1994 5)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated March 29,1995 6)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated August 2,1995 7)
Letter from G. A. Hunger, Jr. to USNRC Document Control Desk dated May 2,1996 8)
Letter from G. A. Hunger, Jr. to USNRC
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Document Cont:ol Desk dated March 24,1997
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Dear NRC Officials:
The subject request for additional information (RAl) regarding Gen 3ric Letter (GL) 92-08,
'Thermo-Lag 3301 Fire Barriers," dated November 14,1997, requested that PECO Energy Company (PECO Energy) respond within 60 days of the receipt of the letter with additional information regarding Thermo-Lag 3301 fire barrier systems. On March 24,1997, PECO Energy provided additional information in response to an RAI dated February 29,1996, 9901220169 990114
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regarding ampacity derating parameters for installed Thermo Lag fire barriers at PBAPS and LGS. A* preliminary review of the March 24,1997 letter was performed by the NRC staff and its contrador, Ssndia National Laboratories and the subjed RAI was then issued.
in the development of the response to the RAI, we have identified that additional adions are needed to thoroughly addross all of the questions and recommendations included in the RAl. As a result, an additional two (2) months is needed to provide a full response to the RAl. The additional actions include revisions to existing calculat!ons to address recommended ch4nges in the calculation methodologies and validation studies using available industry test data. These additional actions are not expected to have any impad on our previous conclusion that the ampacity derating factors associated with installed Thermo Lag barriers are within acceptable I'mits. Use of the additional time will avoid potentialimpad on modifications and other engineering work associated with resolution of the Thermo Lag issue that could occur if resources were required to be redireded to work on the RAI response. Providing a complete response within this time frcme is not expected to have a significant impact on the NRC's review of the empecity derating issue. This request was discussed with Messrs. J. F. Williams and B. C.
Buckley of the NRC on January 12 and 13,1996, respectively, who indicated there were no objections from the NRC staff. Therefore, the requested response to the RAI will be provided by i
March 16,1998.
If you have any questions, please do not hesitate to contact us.
I Very truly yours, G. A. Hunger, Jr.,
Director Licensing cc:
H. J. Miller, Administrator, Region I, USNRC A. C. McMurtray, USNRC Senior Resident inspector, PBAPS A. L. Burritt, USNRC Senior Resident inspector, LGS 4
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