ML20137S167
| ML20137S167 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 04/04/1997 |
| From: | Lesniak M COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9704150048 | |
| Download: ML20137S167 (3) | |
Text
Commonwealth Edison (ompany 1 MO Opus Place Downers Gnn e, lL 60515-5701 1
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April 4,1997 United States Nuclear Regulatory Commission Washington, D. C. 20555 Attention:
Document Control Desk
Subject:
Supplement to the Application for Amendment to Appendix A.,
Technical Specifications for Facility Operating Licenses Byron Nuclear Power Station, Units 1 and 2 i
Facility Operating Licenses NPF-37 and NPF-66 NRC Docket Nos. 50-454 and 455 Braidwood Nuclear Power Station, Units 1 and 2 Facility Operating Licenses NPF-72 and NPF-77 NRC D_ocket Nos. 50 456 and 457 Supplement to Request for Additional Information for the Ampacity Derating Analyses.
Reference:
J. Hosmer (Comed) Letter to NRC Document Control Desk,
" Response to the NRC Request for Additional Information Regarding Ampacity Derating Analyses", dated July 12,1996.
In the reference the Commonwealth Edison Company (Comed) submitted Calculation No. BYR96-082/BRW-96-194, "Ampacity Derating for Standard Fire Wrap Configuration." Page 292 of that calculation was inadvertently omitted from the submittal. Pages 291 and 292 are attached. They should be inserted into the copies of the calculation.
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Please address any questions to Marcia Lesniak, Nuclear Licensing Administrator, at 630-0 663-6484.
Sincerely,
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Marcia T. Lesniak Nuclear Licensing Administrator 9704150040 970404 PDR ADOCK 05000454 F
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NRC Document Control Desk April 4,1997 Attachment cc:
A. B. Beach, Regional Administrator, RIII G. F. Dick, Byron /Braidwood Project Manager, NRR S. Burgess, Senior Resident Inspector, Byron C. Phillips, Senior Resident Inspector, Braidwood Office of Nuclear Safety, IDNS i
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NEP-12-02 Revision 2 i
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COMMONWEALTH EDISON COMPANY CALCULATION NO. : BYR96-082 /
PROJECT NO.
PAGE NO.
BRW-96-194 09050-051 &
292 OF 297 09135-200 Calculation of dorating factors for various depths of fill (File FREEAIR.MCD)
FREEAIR.MCD d
Depths of Fill and Corresponding Heat intensities
'0.525'
'14.075' O.586 12.451 i
0.648 11.103 0.711 9.967 i
0.777 8.998 0.844 8.162 i
0.914 7.435 0.985 6.798 1.059 6.234 1.134 5.733 1.212 5.285 1.292 4.883 4
i DOF_ tab :=
1.374 in IU_ tab ::
4.520 watt ff ' in-2 1.459 4.191 1.547 3.892 1.637 3.620 1,730 3.370 1.826 3.141 1.926 2.931 2.028 2.737 2.134 2.557 2.243 2.391 2.356 2.238 j
2.473 2.095 2.594, 1.962 Aux _ tab := cspline(DOF_ tab,1U_ tab)
IU(DOF) := interp( Aux _ tab,DOF_ tab,lH_ tab,DOF) l REVISION NO.: 0 l