ML20009G475
| ML20009G475 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, Satsop  |
| Issue date: | 07/27/1981 |
| From: | Moriarty J COLT INDUSTRIES, INC. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8108040302 | |
| Download: ML20009G475 (2) | |
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Colt Indu_tries Fairbanks Mcr:a engin, oi,i, ion 701 Lawton Avenue Beloit, Wisconsin 53511 h( l f l 608/364-4411
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July 27, 1981
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t Office of Inspection & Enforcement d
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(M. " Myg*'o" c-" O C3 U. S. Nuclear Regulatory Commission 799 Roosevelt Road
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8 Glen Ellyn, Ill. 60137 N
Attention:
Mr. James G. Keppler, Director, Region III 4
Subjec t: Colt Industries-Fairbanks Morse Engine Division Emergency Diesel Generators Possible Exhaust Valve Cage Holddown Uridertorquei m Gentlemen:
A 16-cylinder PC-2.5 engine i,r a marine contract has suffered a burned exhaust valve cage while under going factory tests.
The burning occurred when hot exhaust gases leaked Jetween the cage and the cylinder head.
Since improper torqueing could result in such leakage, other cylinders on the engine were checked for conformance with the specified torque values.
Several were found to be undertorqued. As a result of this finding, all PC-2.5 exhaust cages are suspect and will be inspected for adequate torque-ing of holddowns. The holddown arrangement is unique to PC-2.5 engines.
There are not any PC-2.5 engines in operating nuclear plants.
There are PC-2.5 engines awaiting starting at the following plants:
- 1) 2 units - Union Electric, Callaway Unit One
- 2) 2 units - Kansas Electric & Gas Co., Wolf Creek Station
- 3) 1 unit - Washington Public Power Supply System, WPPSS #3 The above units will all be checked for adequate holddown torqueing prior j
to start-up.
A copy of this report is being forwarded to the utilities involved.
v Very truly yours, a fVh-
. M. Moriarty MANAGER UTILITY SA
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, s' x9 o 8108040302 810727 a o~. on os iae con iaousir'ei op*<=i'a9 co'o PDR ADOCK 05000482 4
PDR UUl: S 0 1981
T Nuclear Regulatory Conmission July 27,1981 - Page 2 cc: Bechtel Power Corp.
P. O. Box 607 Gai thersburg, Md. 20760 Attention:
SNUPPS Project Engineer Ebasco Services, Inc.
Two World Trade Center 82nd Floor New York, N.Y. 10048 Attention:
F. J. E. Storey Manager of Projects U. S. Nuclear Regulatory Commission c/o Document Management Branch Washington, D.C.
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