ML20063D960
| ML20063D960 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 06/28/1982 |
| From: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-PT21-82-669-000 10CFR-50.55E, PT21-82-669, PT21-82-669-000, RDC-57(82), NUDOCS 8207130225 | |
| Download: ML20063D960 (2) | |
Text
THE CLEVELAND ELECTRIC ILLUMIN ATING COMPANY P O DOX 5000 m CL EVEL AND OHIO 44101 a TELEPHONE (2% 6224830 m ILLUVtNATING BLDG e 55 PUBLIC SOUARE Serving The Best Location in the Nation D lwyn R. Davidson vict per sicE NT S rSTE M E NGLNt E A:NG AND CONSTAuC TON June 28, 1982 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 Final Report on the Standby Diesel Generator System
[RDC 57(82)]
Dear Mr. Keppler:
This letter serves as a final report pursuant to 10CFR50.55(e) concerning a potential defect in the standby diesel generator system supplied by Transamerica Delaval, Inc.
Initial notification that this problem was being evaluated by The Cleveland Electric Illuminating Company (CEI) was made to Mr. P. Byron of your office on June 15, 1982, by Mr. R. L. Vondrasek of CEI.
This report includes a description of the potential deficiency, an analysis of safety implication, and the planned corrective action.
Description of Deficiency The Transamerica Delaval, Inc., letter dated May 13, 1982, to the Nuclear Regulatory Commission, identified a potential defect in their diesel generator system. This report was filed in accordance with 10CFR, Part 21.
The Cleveland Electric Illuminating Company was first notified by Delaval of this defect in a letter dated June 8, 1982.
The potential defect is related to the length of the capscrew which holds the I
starting air valve assembly in the cylinder head.
If this capscrew bottoms in the tapped hole in the cylinder head during installation before the valve assembly is properly seated, the torque wrench reading would be misleading and the assembly could fail.
The starting air valve assembly was manufactured and installed in the cylinder head by Transamerica Delaval. The Perry Nuclear Power Plant has four diesel engines which include this valve assembly. The total number of valve assemblies and capscrews in question is sixty-four (64) and one hundred twenty-eight (128) respectively.
8207130225 820628 PDR ADOCK 05000430 JgL 6 G32 1El]
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N Mr. Jcmes G. Kappler June 28, 1982 o
Analysis of Safety Implications-Failure of the starting air valve assembly could result in a loss of starting air pressure to the engine cylinder and compromise standby diesel start capability.
Planned Corrective Action Our review of the Delaval Parts List indicates that the defective capscrew (P/N GB-032-114) was supplied to the Perry Nuclear Power Plant. The subject capscrews will be inspected for proper Jength and replaced if defective.
Delaval will supply replacement capscrews (P/N GB-032-113) and instructions to eliminate this defect.
Completion of this corrective action is presently scheduled for April 1,1983.
Sincerely, A+f Dalwyn R. Davidson Vice President System Engineering and Construction DRD:pab cc:
Mr. M. L. Cildner NRC 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 l