ML20138C086
| ML20138C086 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 03/31/1986 |
| From: | Spangenberg F ILLINOIS POWER CO. |
| To: | Butler W Office of Nuclear Reactor Regulation |
| References | |
| U-600502, NUDOCS 8604020201 | |
| Download: ML20138C086 (1) | |
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U -600502 L30 - 86(03-31)-L 1A.120 ILLINOIS POWER 00MPANY CLINTON POWER STATION P.o. BOX 678. CLINTON. ILLINOIS 61727 Docket No. 50-461 March 31, 1986 Director of Nuclear Reactor Regulation Attention:
Dr. W. R. Butler, Director BWR Project Directorate No. 4 Division of BWR Licensing U.S. Nuclear R dulatory Commission Washington, DC 20555
Subject:
Clinton Power Station Moderate Energy Line Break Safe Shutdown Analysis
Dear Dr. Butler:
During a discussion with a member of the NRC Staff, clarification was requested on the method used to assure that Clinton Power Station-(CPS) could be safely shut down after a postulated moderate energy line break (MELB) in areas outside containment where a high energy line break (HELB) is not postulated.
The existing analyses have been reviewed and show that the plant can be safely shut down in the event of a postulated MELB.
In performing these analyses, instrumentation which was assumed to be sprayed from a postulated MELB was conservatively assumed not to
-function. Safe shutdown is achieved through the use of separated redundant equipment or the use of equipment which is qualified for spray from a postulated MELB.
If you need any further information, please contact me.
Sincerel yours, I
r F. A.
pang 1 berg Manager - L: censing and Safety DWW/kaf cc:
B. L. Siegel, NRC Clinton Project Manager NRC Resident Office Regional Administrator, Region III, USNRC Illinois Department of Nuclear Safety l
8604020201 860331 l,A PDR ADOCK 05000461
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