ML20054D181
| ML20054D181 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 04/16/1982 |
| From: | Olson R BALTIMORE GAS & ELECTRIC CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8204220417 | |
| Download: ML20054D181 (2) | |
Text
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A BALTIMORE GAS AND ELECTRIC CHARLES CENTER. P.O. BOX 1475 BALTIMORE, MARYLAND 21203 ELECTRIC ENGINEERING DEPARTMENT April 16,19
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Office of Nuclear Reactor Regulation 9
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U.S. Nuclear Regulatory Commission Washington, D.C. 20555 9
Attn:
Mr. Robert A. Clark, Chief Operating Reactors Branch #3 W
Division of Licensing
Subject:
Calvert Cliffs Nuclear Power Plant Unit No. 2, Docket No. 50-318 Supplemental Information to Request for Amendment
Reference:
BG&E letter dated 4/12/82 from A. E. Lundvall, Jr. to R. A. Clark, Request for Amendment Gentlemen:
The referenced letter contains our request for a relaxation of ACTION Statement 3.7.6.1.(b) of the Calvert Cliffs Unit 2 Technical Specifications to allow one air conditioning unit at a time to be out of service for up to 21 days during the period 4/17/82 - 7/21/82 to permit scheduled modifications.
The purpose of this letter is to confirm that the design basis of the redundant air conditioning units has been calculated to be such that a single unit is capable of providing sufficient cooling to keep the Control Room temperature and humidity within design limits during normal operation and thus ensure compliance with habitability requirements and temperature limit requirements for the most limiting equipment.
We have determined that, for the period of this reouest during which one -
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0p reactor will be shut down and cooled down, a single air conditioning unit will be p0 l
sufficient to meet the above criteria. It should also be noted that our maintenance l
records show that the air conditioning units have a reliable operating history with the f D majority of failures being due to minor problems which were readily corrected using jj L available spare parts. In addition, the modifications will be made prior to the hottest W/cAfG g part of the summer season, reducing the heat load on the system and enhancing the ability of the ventilation system to perform its other design function of cooling the [ Y600 00 Control Room directly with outside air.
8204220417 820416 PDR ADOCK 05000318 P
A Mr. Robert A. Clark April 16,1982 We have determined that this request constitutes supplemental information to a previous request and that, pursuant to 10 CFR 170, no additional fee is required.
However, enclosed is BG&E Check #B052004 for $4,000.00, which was accidentally omitted from the original submittal.
Ver uly urs
[R. C. L. Olson Principal Engineer Nuclear Licensing & Analysis Unit RCLO:gvg Enclosure cc:- Messrs.
- 3. A. Biddison, Jr.
G. F. Trowbidge, Esq.
D. H. Jaffe R. E. Architzel