ML20084F498
| ML20084F498 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 04/24/1984 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| RDC-101(84), NUDOCS 8405040205 | |
| Download: ML20084F498 (2) | |
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- TELEPHONE (216) 622-9800 - lLLUMINATING BLOG.
- 55 PUBLIC SQUARE Serving The Best Location in the Nation MURRAY R. EDELMAN April 24, 1984 VICE PRESIDENT CLE A R Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Conmission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Potential Defect in Two Piston Skirt Castings Supplied by Transamerica Delaval [RDC 101(84)]
Dear Mr. Keppler:
This letter serves as the final report pursuant to 10CFR50.55(e) concerning a potential problem with the piston skirts for the diesel engines supplied by Transamerica Delaval, Inc.
Mr. P. R. Pelke of your office was first notified on March 30, 1984, by Mr. P. P. Martin of The Cleveland Electric Illuminating Company (CEI) that this matter was being evaluated for applicability to the Perry Nuclear Power Plant (PNPP).
This report contains a description of the deficiency, an analysis of the safety implication, and corrective action to be implemented.
Description of Deficiency The potential deficiency is associated with heat treating of piston skirt castings.
Fan cooling may have been utilized resulting in residual stress which could cause cracking of the piston skirt during operation. The pistons currently installed in the PNPP diesels are not affected by this concern, however, two spare pistons at PNPP have been identified as potentially defective due to improper heat treating.
Analysis of Safety Implication Had the spare pistons been installed, the combination of the residual stress caused by the heat treating and the routine operating stress could potentially cause cracking of the piston skirt.
A cracked piston skirt could result in engine failure.
0405040205 840424 DR ADOCK 05000 APR y OfQ
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Mr. James G Keppler April 24, 1984 I
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Corrective Action
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The two spare pistons identified at PNPP will be returned to the manufacturer.
Transamerica Delaval will inspect, stress relieve if necessary, and return the l
pistons or replace them with new pistons which have been properly heat treated.
Corrective action will be accomplished upon our receipt of new or corrected i
pistons and is anticipated by October.1984, i
Please call if there are any additional questions.
l Sincerely, i
Murray R. Edelman Vice President Nuclear Group l
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cc:
Mr. M. L. Gildner NRC Site Office Director Of fice of Inspection and Enforcement i
U.S. Nuclear Regulatory Commission l
Washington, D.C.
20555 1
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U.S. Nuclear Regulatory Commission j
c/o Document Management Branch j
Washington, D.C.
20555 l
Records Center, SEE-IN l
Institute of Nuclear Power Operations l
1100 circle 75 Parkway, Suite 1500 l
Atlanta, Georgia 30339 3
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