ML20040D879
| ML20040D879 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 01/20/1982 |
| From: | Borgmann E CINCINNATI GAS & ELECTRIC CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, QA-1595, NUDOCS 8202020342 | |
| Download: ML20040D879 (2) | |
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---==y THE CINCINNATI GAS & ELECTRIC COMPANY sE- "
CINCINNATI OHIO 4520t January 20, 1982-QA-1595 E. A. BORGMANN sENsCR V6CE PREUDENT g
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88J U. S. Nuclear Regulatory Commission il IO8 g 7 Region III e,
799 Roosevelt Road ef 4
Glen Ellyn, Illinois 60137 glb(n Attention:
Mr. J. G. Keppler, Director p
RE: WM.H. 7IMMER NUCLEAR POWER STATION UNIT I 10CFR50.55(e) - ITEM M-31, SRV SOLEN 0ID VALVE DEFECT - DOCKET No. 50-358, CONSTRUCTION PERMIT CPPR-88, W.O. #57300 JOB E-5590 FILE NO. NRC-8 Gentlemen:
This letter constitutes a final report regarding the subject deficiency initially reported to Mr. W. F. Christianson, of the NRC, as a potentially reportable deficiency under 10CFR50.55(e).
The subject deficiency was discovered when Wyle Labs was contracted by General Electric Company (GE), to perform environmental qualification tests on Crosby Solenoid Actuated Safety Relief Valves (SRV). Wyle Labs has reported that in some cases, at design temperatures (340 F), these solenoid actuated valves fail to operate at the minimum allowable supply voltage.
Failure of these valves could result in the loss of availability of the low pressure ECCS systems which may adversely affect the safety of operations of the plant during its expected lifetime. This condition is considered to be reportable under the requirements of 10CFR50.55(e).
To correct this situation, CG&E will replace the faulty solenoid valves with valves qualified to perform at design-basis accident conditions.
Implemen-tation of this corrective action is scheduled to be completed by December 31, 1982.
8202020342 820120 PDR ADOCK 05000359 e -,
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'JAN 2 1982
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U. S. Nuclear Regulatory Commission January 20, 1982 i
RE:
Wm. H. Zimmer Nuclear Power Station Page 2 4
Unit 1 - 10CFR50.55(e) - Item M-31 SRV Solenoid Valve Defect l
We trust the above will be found acceptable as a final report under 10CFR50.55(e).
Very truly yours, THE CINCINNATI GAS & ELECTRIC COMPANY b
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By E. A. BORGMANN J
EAB:plc cc: NRC Resident Inspector 4
ATTN:
W. F. Christianson NRC Office of Inspection & Enforcement l
Washington, D.C.
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