ML19318A717
| ML19318A717 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 05/05/1980 |
| From: | Borgmann E CINCINNATI GAS & ELECTRIC CO. |
| To: | Heishman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML19318A715 | List: |
| References | |
| QA-1290, NUDOCS 8006240064 | |
| Download: ML19318A717 (2) | |
Text
F
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-r THE CINCINNATI GAS & ELECTRIC COMPANY db
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CINCINN ATi. OHIO 4 5201 y ds Pm s os s.
May 5, 1980 QA-1290 U. S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attention: Mr. R. F. Heishman, Chief Reactor Operations and Nuclear Support Branch RE: WM. H. ZIMMER NUCLEAR POWER STATION - UNIT I I.E. INSPECTION REPORT #79-36, DOCKET NO.
50-358, CONSTRUCTION PERMIT CPPR-88, W.0. #
57300-957, JOB E-5590 Gentlemen:
This letter constitutes our formal reply to open item #3 identified in the referenced report concerning set pressures on relief valves in safety systems.
A) An investigation of construction practices during hydro-static testing of safety systems revealed no evidence to support that the set pressures of the relief valves had been changed.
This investigation revealed that documenta-tion existed to support that the relief valves were, in fact, removed from the system and/or the piping blind flanged.
Welded-in relief valves were properly " gagged".
B) A survey of all relief valves in safety systems was conducted to determine which valves had broken or missing set pressure seals. All valves which have broken seals have been identified on Nonconformance Reports.
C) The Electric Production Department is currently obtaining suitable equipment for verifying relief valve set pressures and will verify the set pressure of all safety-related relief valves prior to completion of each system preoperational test.
The Station Quality Engineer will k,.
4
% 90 8006240
Mr. R. F. Heishman U. S. Nucics'r Regulatory Commission 1
Regicn III May 5, 1980 - QA-1290 Page 2 verify that this action is taken prior to final system acceptance.
We trust the above actions will resolve this open item.
Very truly yours.
THE CINCINNATI GAS & ELECTRIC COMPANY By F#~
E. A. BORGMAN SENIOR VICE PRESIDENT JRS:pa
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