ML20212G657
| ML20212G657 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 01/13/1987 |
| From: | Allen C COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 2589K, NUDOCS 8701210112 | |
| Download: ML20212G657 (2) | |
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One Fwst Nabonel Plaza, Chcago, luinais Address Reply to: Post Omco Box 757 i
Chca00. lHinois 60000 0767 January 13, 1987 Mr. Harold R. Denton, Director office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Comunission Washington, DC 20555
Subject:
LaSalle County Station Unit 1 proposed Amendments to Technical Specification for Facility Operating License NPF Diesel Generator Lube Oil Modification Additional Information NRC Docket Nos. 50-373 Reference (a): October 14, 1986 letter from C. M. Allen to H. R. Denton transmitting request for Technical Specification Amendment.
Dear Mr. Denton:
The following comunitenents have been made to the NRC concerning the propoted Technical Specification amendment to allow Unit 1 operation for a period of 30 days during the installation of the pre-lube modification on the Unit 2 Division 2 (2A) Diesel Generator. These comunitments were made to members of your staff in telecons held on November 17 and December 3, 1986.
1.
The Unit I and the Unit 2 System Auxiliary Transformers (SAT) will be maintained in a operable condition at all times during the period of tiene that the 2A diesel Generator is inoperable for the purposes of completing the pre-lube modification. With one SAT inoperable, Unit I will comumence an inunediate shutdown and will be in hot shutdown within twelve (12) hours and in cold shutdown within the subsequent twenty-four (24) hour period.
2.
During the period of time that the 2A Diesel Generator is inoper-able for the purposes of completing the pre-lube modification, the loading of the Unit 2 Division 2 Class 1E bus (242Y) will be restricted such that overloading of the Unit 1 Division 2 (1A)
Diesel Generator will not occur when crosstying the 242Y bus and the Unit 1 Division 2 class 1E bus (142Y).
3.
During the period of time that the 2A Diesel Generator is inoperable for the purpose of completing the pre-lube modification, the Unit 1 Divisions 1 and 2 Diesel Generators (0 and 1A) will be maintained operable. With either the 0 or the 1A Diesel Generator inoperable, Unit I will comumence an inanediate shutdown and will be in hot shutdown within twelve (12) hours and in cold shutdown within the subsequont twenty-four (24) hour period.
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8701210112 870113 PDR ADOCK 05000373 0
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Mr. H. R. Denton January 13, 1987 4.
With the Unit 1 Division 3 Diesel Generator (IB) inoperable, the requirements of Technical Specification 3.8.1.1 action statement e will be met.
i 5.
During the period of time that.the 2A Diesel Generator is inoper-able for the purposes of completing the pre-lube modification, the Unit 2 Unit Auxiliary Transformer (UAT) will be maintained operable and available as a third source of power for bus 242Y.
Please direct any additional questions you may have concerning this matter to this this office.
Very truly yours, J
C. M. Allen Nuclear Licensing Administrator la cc: Regional Administrator - RIII LSCS Resident Inspector Dr. A. Bournia - NRR M. C. Parker - IDNS 4
SUB IBED AND S to be me this day of A 11114C,, 1987
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2589K