ML20099H161
| ML20099H161 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 02/28/1985 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| (RDC-128(85)), NUDOCS 8503150188 | |
| Download: ML20099H161 (2) | |
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- 55 PUBLICSOUARE Serving The Best Location in the Nation MURRAY R. EDELMAN vice enesiDENT February 28, 1985 NUCLEAR Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Voltage Drop Affecting ESW Pumps /
Valves (RDC 128(85)]
Dear Mr. Keppler:
This letter serves as the interim report pursuant to 10CFR50.55(e) on the potential significant deficiency regarding voltage drops affecting the Division 1, 2, and 3 Emergency Service Water pumps and their associated discharge valves.
Mr. J. McCormick-Barger of your office was notified on January 30, i
1985, by Mr. T. A. Boss of The Cleveland Electric Illuminating Company that this problem was being evaluated per our Deviation Analysis Report Number 224, 1
This report contains a description of the deficiency, our planned actions to complete our evaluation and the date for submittal of our next report on this subject.
Description of Deficiency Calculations have indicated that the control circuit voltage drop in the close control circuits of the Division 1, 2 and 3 Emergency Service Water pumps, IP45-C001A, IP45-C001B, and IP45-C002 may be large enough to result in non-operation of those pumps.
i Completion of Evaluation l
Field testing of the close control circuits has shown that all three divisions function properly; however, the testing performed did not simulate the DC voltage that would be present should the Emergency Service Water system be activated in response to a LOCA with a simultaneous loss of the battery charger. While it has been determined that the calculation for the Division 3, IP45-C002, control circuit was conservative enough to assure proper operation in an undervoltage situation, additional test data and/or evaluation is 3s.
required to verify whether or not the Division 1 and 2 close control circuits would operate properly under the above conditions.
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8503150188 850228 IAAR, 41985 h PDR ADOCK 05000440 44;,,,
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s, Mr. James G. KapplGr Februnry 28, 1985 We will submit our next report to you on or before April 19, 1985.
Please call if there are any questions.
Sincerely,
/)W Murray R Edelman Vice President Nuclear Group MRE:pab cc: Mr. J. A. Grobe USNRC, Site Office 4
Mr. D. E. Keating USNRC, Site Office Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 U.S. Nuclear Regulatory Commission c/o Document Management Branch Washington, D.C.
20555 i
Records Center, SEE-IN Institute of Nuclear Power Operations i
1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 1
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