ML19310A292
| ML19310A292 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 06/02/1980 |
| From: | Kalivianakis N COMMONWEALTH EDISON CO. |
| To: | Case E Office of Nuclear Reactor Regulation |
| References | |
| NJK-80-199, NUDOCS 8006110034 | |
| Download: ML19310A292 (2) | |
Text
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Comm:nw:alth Edison
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Ou+d Citl2s Nucitar PowIr Station hG 22710 206 Avsnus North Corcova, Illinois 61242 Telephone 309/654-2241 NJK-80-199 e
1 June 2, 1980 Mr. Edson Case, Deputy Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
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Dear Mr. Case:
Enclosed please find a listing of those changes, tests, and experiments completed during the month of May, 1980, for Quad-Cities Station Units 1 and 2, DPR-29 and DPR-30. A summary of the safety evaluation is being reported in compil-ance with 10 CFR 50.59 Thirty-nine copies are provided for your use.
i Very truly yours, COMMONWEALTH EDISON COMPANY QUAD-CITIES NUCLEAR POWER STATION
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N. J. Kallvianakis Station Superintendent NJK/JJK/bb Enclosure cc R. F. Janecek-8006110034
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M-4-2-75-73'
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Description of Modification:
This modification lnvolves installation of an RHR Servi ~ce Water Pump seal'
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leakage water collection and discharge system. The seal water, a major contributor to' the free standing water, is collected in a receiver tank and discharged to the service water standpipe.
Summary of Safety Evaluation:
By reducing the humidity in the area in which the pumps are located will increase the reliability of the equipment. The new vault penetrations are tested of the same frequency as the present penetrations. Also, check valves and air operated Isolation valves are included to provide system.
reliability.
M-4-2-80-3 Description of Modification:
This modification involved the installation of additional seismically quallfled supports and a sof t-seated check valve in the Target Rock Safety /
Relief valve pneumatic supply line. This was required in. response to NRC IE Bulletin 80-01.
I Summary of Safety Analysis:
This modification does not change the operability of the S/RV system. The margin of safety is ennanced by upgrading-existing equipment to withstand design basis events.
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