ML20083F934
| ML20083F934 | |
| Person / Time | |
|---|---|
| Site: | Perry, Harris, 05000411  |
| Issue date: | 12/22/1983 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, RDC-68-(82), NUDOCS 8401050627 | |
| Download: ML20083F934 (2) | |
Text
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]/n B P O BOX 5000. CLEVELAND oHlo 44101 - TELEPHONE (216) 622-9800 - ILLUMINATING BLDG.
- 55 PUBLICSOUARE Serving The Best Location in the Nation MURRAY R. EDELMAN December 22, 1983 VICE PRESIDENT NUCMAR 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 Standby Diesel Generators DSRV 16 Potential Defect Concerning IEEE 383 Failure in Certain Class IE Circuits [RDC 63(82)]
Dear Mr. Keppler:
This letter serves as our final report pursuant to 10CFR50.55(e) concerning the potential defect associated with the IEEE 383 failure in certain Class lE circuit wiring in the standby diesel generator system supplied by Transamerica Delaval, Inc. (TDI).
Initial notification that this problem was being evaluated by The Cleveland Electric Illuminating Company (CEI) was made to your of fice on November 23, 1982, by Mr. E. Riley of CEI.
Previously submitted correspondence on this subject was transmitted September 27, 1983; March 30, 1983; and December 22, 1982.
This report contains a Description of the Potential Deficiency, an Analysis of Safety Implications and the Corrective Action Taken.
Description of Potential Deficiency Transamerica Delaval, Inc. notified CEI that commercial grade wire had been used as Class 1E cable in certain engine and panel circuits. This cable had f ailed the IEEE 383 Insuln tion Flame Test. The potential problem with the electrical cables is that the manuf acturer's temperature rating for the cable insulation may be exceeded during operation of the diesel generator.
Analysis of Safety Implications There are two types of cable in question. The first of which is the shielded cable which runs from the magnetic pickups to the engine junction boxes.
This cable is rated for 80*C.
The expected operating temperature of the cable would exceed the manufacturer's rating when the ambient temperature is greater than 129'F.
Failure of these cables could prevent the closing of the diesel generator output breaker.
The Perry Nuclear Power Plant diesel generator has an ambient temperature lower than 125*F.
8401050627 031222 PDR ADOCK 05000400 PDR S
DEC 271983 As 1 t\\0
Mr. Jr=:s G. Keppler December 22, 1983 The second cable is the multi-conductor cable which runs from the engine terminal box to the Woodward Governor Actuator.
This cable is rated for 75'C.
If the ambient temperature exceeds 98.5*F, the rated insulation temperature would be exceeded. Failure of this cable would result in the governor operating
'as a hydraulic speed sensing governor.
Operation in this manner would allow the engine to run.and carry load, but would provide a slightly slower response to load change or load pick-up.
This situation would exist for the Perry Nuclear Power Plant since the diesel generator has an ambient temperature higher than 98.5*F.
Corrective Action Taken Transamerica Delaval sent to Perry Nuclear Power Plant instructions for replacing both potentially defective cable. Replacement parts for the cable had already been ordered prior to recelpt of the instructions and have since been shipped to Perry Nuclear Power Plant.
At present, installation of the replacement cables is being directed by the Nuclear Construction Engineering Section of the Project Organization.
Installation is scheduled to be completed by January 31, 1984.
Please call if there are any additional questions.
Sincerely, Murray R. Edelman Vice President Nuclear Group MRE:pab cc:
Mr. M. L. C11dner NRC Site Office Director Of fice 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 Records Center, SEE-IN Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339
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