ML20132H202
| ML20132H202 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 12/23/1996 |
| From: | Hebert J Maine Yankee |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| JRH-96-296, MN-96-190, NUDOCS 9612300014 | |
| Download: ML20132H202 (2) | |
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MaineYankee e
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RELIABLE ELECTRICITY SINCE 1972 329 BATH ROAD + BRUNSWICK, MAINE 04011 + (207) 798-4100 December 23,1996 MN-96-190 JRH-96-296 l
l UNITED STATES NUCLEAR REGULATORY COMMISSION Attention: Document Control Desk Washington, DC 20555
References:
(a)
License No. DPR-36 (Docket No. 50-309)
(b) Licensee Event Report 96-004, Turbine Building High Energy Line Break (c)
Leier: G.D. Whittier, MYAPCo to USNRC, " Maine Yankee Licensing Basis j
For Environmental Qualification in Turbine Building", dated August 14,1996, MN-96-114 (d) Letter: R.W. Cooper, USNRC to C.D. Frizzle, MYAPCo, " Maine Yankee Licensing Basis for Environmental Qualification in the Turbine Building",
dated August 21,1996.
(e) Letter: J.R. Hebert, MYAPCo, to USNRC," Maine Yankee Licensing Basis for Environmental Qualification in the Turbine Building-Winter Conditions", datec November 18,1996, MN-96-154
Subject:
Maine Yankee Licensing Basis for Environmental Qualification in the Turbine i
Building-Winter Conditions.
Gentlemen:
i Refererce (b), an informational Licensee Event Report (LER), described a potential concem and interim action items being taken due to a possible High Energy Line Break (HELB) scenario more limiting than the Design Basis HELB scenario in the Turbine Building. References (c) and (d) documented Maine Yankee's plan to complete the " winter ventilation configuration" High Energy Line Break analysis for the environmental conditions in the turbine building and submit the results to you by October 1,1996. Reference (c) presented the results of the analytical effort and described i
the design for temporary modifications to the turbine building which will allow us to initiate the winter ventilation configuration while preserving the capability to mitigate the effects of a high energy line break.
Reference (b) stated that Mairie Yankee would notify the NRC staff of the outcome of evaluations performed as part of the corrective' actions described in'the LER. This notification was to have been submitted as an addenduni to the LERT g N/k
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i 96123ooo14 961223 l
PDR ADOCK 050003 9 P
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UNITED STATES NUCLEAR REGULATORY COMMISSION MN-96-190 Attention: Document Control Desk Pager Two In lieu of an addendi 7 to the LER, Reference (c), (d), and (g) provide descriptions of Maine Ye 1kee's evaluations, analyses, interim modifications, and proposed permanent modifications to mitigate the effects of a l'icense basis HELB in the turbine hall with winter ventilation configurations.
Please contact us, should you have any questions concerning this matter.
Sincerely,
-) i James R. Hebert, Manager Licensing and Engineering Support c:
Mr. Hubert Miller Mr. J. T. Yerokun Mr. Daniel Dorman Mr. Patrick Dostic Mr. Uldis Vanags
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