ML20126H569
| ML20126H569 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 06/14/1985 |
| From: | Dale L MISSISSIPPI POWER & LIGHT CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20126H572 | List: |
| References | |
| AECM-85-0191, AECM-85-191, NUDOCS 8506180384 | |
| Download: ML20126H569 (3) | |
Text
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MISSISSIPPI POWER & LIGHT COMPANY Helping Build Afississippi RA4EIAdA P. O. B O X 164 0. J A C K S O N. MIS SIS SIP PI 39215-1640 June 11.,
1985
%vcLE AR LsCE%$% & SAFETY CEPAETWENT U. S. Nuclear Regulatory Comission Office of Nuclear Reactor Regulation Washington, D. C.
20555 Attentien:
Mr. Enrold R. Denton, Director
Dear Mr. Denton:
SUBJECT:
Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416 and 50-417 License No. NPF-29 File: 0260/L-860.0 IOCTR50, Appendix R Raceway Support Evaluation AECM-85/0191 The NRC conducted a site inspection of Grand Gulf Nuclear Station (GGNS) during the week of May 20, 1985, in the area of fire protection. Upon request, MP&L provided the inspectors a copy of an evaluation on file demonstrating that racevav supports did not need to be protected for a one-hour fire. The inspectors subsequently requested that the evaluation be formally sub=itted to NRR for review and approval as an exception to the require =ents of 10CFR50 Appendix R.
The raceway support evaluation and requested exception submittal was identified as Ite: 30 on the Audit Open Items List in the NRC exit interview conducted on May 24, 1985.
In accordance with the NRC request. Attach =ent I to this letter provides MP&L's formal request for exception to 10CFR50 Appendix R.Section III.G.2.a. is a copy of the subject evaluation fcr NRC review.
In accordance with 10CFR170, an application fee of $150.00 is enciesed.
Please contact this office if you require further information.
Yeurs truly, L. F. Dale Director MLC/JGC:d:n 8506180384 850614 Attach =ent PDR ADOCK 05000416 O
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AECM-85/0191 Page 2 l
cc:
Mr. J. B. Richard (w/a)
Mr. O. D. Kingsley, Jr..(w/a)
Mr. R. B. McGehee (w/a)
Mr. N. S. Reynolds (w/a)
Mr. G. B. Taylor (w/o)
Mr. R. C. Butcher (w/a)
Mr. James M. Taylor, Director (w/a)
Office.of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington,:D. C.
20555
. Dr. J. Nelson Grace,- Regional Administrator (w/a)
U. S. Nuclear Regulatory Commission Region II_
,a 101 Marietta St., N. W.,-Suite 29001 Atlanta, Georgia 30323 i
l J0P14AECM85061402 - 2
Attachm:nt 1 AECM-85/0191
" RACEWAY SUPPORTS" EXCEPTION REQUEST Section III.G.2.a of Appendix R to 10CFR50 states that, " structural steel forming a part of or supporting such fire barriers shall be protected to provide fire resistance equivalent to that required of the barrier".
MP&L requests exception from the literal t?quirement of that stated above based on the following dir,cussion.
SUMMARY
AND BASIS FOR EXCEPTION Additional guidance on Section III.G.2.a was provided in Generic Letter GL85-01 which indicated that supports only need to be protected if the failure of the support will result in a loss of the cable tray fire barrier. GL85-01 also indicated that an exception was not required if a structural evaluation existed and was available for audit. Raceway support steel supporting one hour barriers is not fire proofed at GGNS and based on the evaluation provided in to this submittal, MP&L believes that additional fire protection is not required. However, as requested by the NRC inspection team during their visit to CGNS on May 20-24, 1985, MP&L requests relief from the literal requirements of 10CFR50 Appendix R, Section III.G.2.a for raceway supports in the areas listed in Attachment 2 to this letter.
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