ML13316A063
| ML13316A063 | |
| Person / Time | |
|---|---|
| Site: | Perry, Catawba, Harris, Grand Gulf, River Bend, Vogtle, San Onofre, Comanche Peak, Rancho Seco, Midland, Bellefonte, Washington Public Power Supply System, Shoreham, Hartsville  |
| Issue date: | 07/19/1990 |
| From: | Guntru B COOPER INDUSTRIES, INC. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| REF-PT21-90 NUDOCS 9007240028 | |
| Download: ML13316A063 (6) | |
Text
ENERGY SERVICES GROUP iCOOPERI INTRIES July 19, 1990 Director of Nuclear Reactor Regulations U.S. Nuclear Regulatory Commission Mail Station P1-137 Washington, DC 20555 REPORT #154
Dear Sir,
In accordance with the requirements of Title 10, Chapter 1, Code of Federal Regulations, Part 21, Energy Services Group, a Division of COOPER INDUSTRIES, hereby notifies the Commis sion of a potential defect in a component of a DSR or DSRV Standby Diesel Generator System.
There exists a potential problem with the Starting Air Admission Valve, a safety related component in the starting air system.
COOPER INDUSTRIES supplied DSR and DSRV engines and/or spare parts with this potential defect to the following sites:
UTILITY SITE SERIAL NO.
MODEL LILCO Shoreham 74010-12 DSR-48 SERI Grand Gulf 74033-36 DSRV-16-4 GULF STATES River Bend 74039-40 DSR-48 CP&L Shearon Harris 74046-49 DSRV-16-4 DUKE Catawba 75017-20 DSRV-16-4 SO CAL ED San Onofre 75041-42 DSRV-20-4 CEI Perry 75051-54 DSRV-16-4 TVA Bellefonte 75080-83 DSRV-16-4 WPPS WPPSS I 77084-85 DSRV-16-4 TUSI Comanche Peak 76001-04 DSRV-16-4 GEORGIA PR Vogtle 76021-24 DSRV-16-4 CONSUMERS PR Midland 77001-04 DSRV-12-4 TVA Hartsville 77024-35 DSRV-16-4 SMUD Rancho Seco 81015-16 DSR-48 ENTERPRISE ENGINE SERVICES 14490 Catalina Street P 0. Box 1837 San Leandro, CA 94577 r
(415) 614-7400- -
Fax: (415) 614-7409 AJAX *COBERRA *COOPER-BESSEMER *ENTERPRISE'* ENTRONIC *PENN'SUPERIORO *TEXCENTRICO PRODUCTS 9C)7240028 900719 PDR OCK 05000:206 PDC
US Nuclear Regulatory Commission Report #154 7/19/90 Page 2 Georgia Power at Vogtle has recently reported four (4) inter mittent failures to start the 2B diesel generator.
In all but the last failure to start, subsequent start attempts were successful.
It has been determined that the cause of the failure to start was the air start piston sticking in the air start valve cap.
Sticking in the piston cap can cause the air valve to stick in either the closed or open position.
A valve stuck in the closed position will result in a "dead" cylinder.
This will have a slight negative impact on engine start time, but the increase in starting time will not be significant and in almost all cases not noticeable. Multiple closed valves on an engine can result in a very slow engine start or failure to start.
A valve stuck in the open position would most likely result in a very slow engine start or failure to start.
If this were to occur on an operating engine, the engine would lose the output of the affected cylinder until normal vibrations freed the piston sufficiently for the valve to close.
This could impair the engines ability to carry rated load if the valve did not reseat.
Our investigation continues to establish a course of correc tive action.
Examination of components suggests a combina tion of root cause conditions, i.e., a close tolerance design fit between the piston and cap and the affect of coefficients of expansion for different materials of construction in these components.
This condition may be exacerbated by possible bore distortion occurring when the cap is tightened to the valve body and cylinder head.
Sticking valves may be identified by first increasing the engine temperatures to the maximum operating temperature by running it at full load for approximately a one-hour period.
The,valve is then manually cycled by applying a 60 psi pilot signal to the pilot input at the subcover.
The valve should audibly open upon application of the pilot signal.
It should audibly snap closed when the pilot signal is removed.
Our final recommendation for corrective action will be pub lished no later than July 31, 1990.
FW ENERGY SERVICES GROUP COOPER SI INOUSTRIES
U.S. Nuclear Regulatory Commission Report #154 7/19/90 Page 3 A copy of this letter will be forwarded to all of the affected sites referenced in Paragraph 2 of this letter as indicated by the carbon copy list.
Our evaluation of this matter was concluded on July 18, 1990.
Sincerely Bruce C. Guntrum Manager, Quality Assurance BCG:ej cc:
see attached ENERGY SERVICES GROUP
10CFR21 Report #154 Gulf States Utilities P.O.
Box 220 St.
Francisville, LA 70775 Attention:
Director, Nuclear Licensing Carolina Power and Light Company Harris Nuclear Project P.O.
Box 165 New Hill, NC 27562 Attention:
Mr.
C.S.
Hinnant Plant General Manager Carolina Power and Light Company Harris Nuclear Project P.O.
Box 1551
- Raleigh, NC 27602 Attention:
R.A.
Watson Sr. Vice President Carolina Power and Light Company Harris Nuclear Project P.O.
Box 165 New Hill, NC 27562 Attention:
Mr.
R.B. VanMetre
- Manager, Technical Support Carolina Power and Light Company Shearson Harris Nuclear Plant P.O.
Box 165 New Hill, NC 27562 Attention:
Mr.
George Forehand
- Manager, GA/QC Duke Power Company P.O.
Box 33189 Charlotte, NC 28242 Attention:
W.T.
Robertson, Jr.
V.P.
Procurement, Services & Materials Southern California Edison P.O.
Box 138 D4E San Clemente, CA 92672 Attention:
G.A.
Manager ENERGY SERVICES GROUP
- 10CFR21 Report #154 cc:
Tennessee Valley Authority 400 W. Summit Hill Drive WT10 C126 H-K Knoxville, TN 37902-1499 Attention:
R.C.
Weir Sacramento Municipal Utility District 14440 Twin Cities Road
- Herald, CA 95638 Attention:
Mr.
Donald R.
Ferguson Nuclear Engineering Manager M.S.
208-6 Georgia Power Company Plant Yogtle P.O: Box 1600' Waynesboro, GA 30830 Attention:
Mr.
G. Bockhold, Jr.
Plant Manager System Energy Resources P.O.
Box.756 Port Gibson, MS 39150 Attention:
C.R.
Hutchinson General Manager, SERI System Energy Resources P.O.
Box 429 Port Gibson, MS 39150 Attention:
Fred Titus, Director Nuclear Plant Engineering System Energy Resources P.O.
Box 31995 Echelon One 1340 Echelon Parkway
- Jackson, MS 39286-1995 Attention:
Mr.
T.H. Cloninger V.P. Nuclear Engineering and Support Long Island Lighting Company Shoreham Nuclear Power Station North Country Road Wading River, NY 11791 Attention:
- Manager, Nuclear Operations Support Department ENERGY SERVICES GROUP
IOCFR21 Report #154 cc:
Texas Utilities Electric Skyway Tower 400 North Oliver Street L.B.
81 Dallas, TX 75201 Attention:
Mr.
W.J.
Cahill Executive Vice President Cleveland Electric Illuminating Company Perry Nuclear Power Plant P.O.
Box 97
- Perry, OH 44081 Attention:
A.
Kaplan Vice President, Nuclear Cleveland Electric Illuminating Company c/o Perry Nuclear Power Plant P.O.
Box 97
- Perry, OH 44081 Attention:
Mr.
E.
Riley Director, Nuclear Guality Assurance Department Cleveland Electric Illuminating Company c/o Perry Nuclear Power Plant P.O. Box 97
- Perry, OH 44081 Attention:
Mr.
S.
Kensicki Director, Perry Plant Technical Department Tennessee Valley Authority 1101 Market Street, LP SN 152B Chatanooga, TN 37402 Attention:
Mr.
T.W.
Overlid
- Manager, Nuclear Experience Review Program Tennessee Valley Authority WT10 B-77 H-K 400 W. Summit Hill Drive Knoxville, TN 37902 Attention:
Tim Chan Washington Public Power Supply System P.O.
Box 460
- Richland, WA 99352 Attention:
Mr.
L.C.
Oakes
- Manager, WNP-1 Engineering ENERGY SERVICES GROUP COOPERi