Part 21 Report - 1996-611
ACCESSION #: 9607150052
150 Lincoln Avenue
Grove City, PA 16127-1898
Tel 412 458 8000
Fax 412 458 3574
Ajax [Registered Trademark]
COOPER Coberra [Registered Trademark]
ENERGY SERVICES Cooper Bessemer [Registered Trademark]
July 9, 1996 En-Tronic [Registered Trademark]
Superior [Registered Trademark]
Our Ref: QCG-10291
Document Control Desk
U. S. Nuclear Regulatory Commission
Washington, D.C. 20555
In accordance with the requirements of the Nuclear Regulatory Commission
Title 10, (Chapter 1, Code of Federal Regulations, Part 21, Cooper Energy
Services (CES), a division of Cooper Cameron Corporation, hereby notifies
the Commission of a potential manufacturing defect of the Enterprise
[Copyright] DSR-4 and DSRV-4 Emergency Diesel Generators (EDG's).
The potential defect concerns the starting air admission valves (block
and vent valves) Enterprise part number KR-001-000. The valve operates
on receipt of a start signal to admit stored air receiver pressure to the
engine headers, beginning the process that rolls the engine for starting.
The valves are parT of redundant starting circuits such that two are
employed for a Model DSR-4 (in-line) engine and four on a Model DSRV-4
The valves were originally manufactured by Calcon Corporation. Amot
Controls Corporation has since purchased the Calcon product line and
maintains the design and production.
The potential defect was reported to CES by Entergy Operations, Inc.,
River Bend Station (EOI-RBS) as three valves had failed during engine
operation or while on bench test. The first valve failed on engine,
failing to open fully (with the redundant valve isolated), This resulted
in an insufficient supply of air to roll the engine. The second valve
failed to cycle during EOI-RSS bench test. The third valve successfully
passed the bench test but stuck open during its first use on engine.
July 9, 1996
The above valves, and three other valves thought to be suspect were
returned on January 31, 1996 to CES for evaluation. The investigation
indicated no common root cause of malfunction. Probable contributing
factors were spring discrepancies and valve body casting anomalies.
While not found by itself to cause the reported failures, all springs
were noticeably bent or lacked squared and ground ends.
A recent poll of utilities indicated that no other significant failures
have occurred since the issuance and implementation of CES Service
Information Memo (S.I.M.) No. 379 (Redesigned spool assembly, Viton
seals). S.I.M. 379 was issued 12/1/89.
The investigative activities yielded no clear cause for the failures at
EOI-RBS. As failure of these valves could render the EDG inoperable, and
in light of the deficiencies found it is prudent to report the failures,
conditions, and recommended actions under 10 CFR Part 21.
1] Verify in-service valves - each monthly surveillance run should be
preceded by an air roll initiated by a single starting air admission
valve. Alternate which valve is used each month to routinely verify
all valves on a regular basis.
2] Return any spare valves for inspection/evaluation by CES.
LIST OF AFFECTED UTILITIES SITE ENGINE SERIAL NO.
Carolina Power and Light Shearon Harris 74046-48
Cleveland Electric Illuminating Perry 75051-54
Duke Power Catawba 75017-20, 74049
Entergy Operations Grand Gulf 74033-34
Entergy Operations River Bend 74039-40
Georgia Power Vogtle 76021-24
Korea Electric KORI 3 & 4 79029-32
Korea Electric Yonggwang 1 & 2 81021-24
Taiwan Power Co. Kuosheng 1 & 2 75005-08
Taiwan Power Co, Maanshan 1 & 2 78006-09
Texas Utilities Comanche Peak 76001-04
Tennessee Valley Authority Bellefonte 75080-83
Washington Public Power WNP-1 75084-85
July 9, 1996
If you have any questions concerning this report, please contact Andrew
P. Steffan, Supervisor, Quality Engineering at 412-458-3455 or Ronald G.
Billig, Supervisor Aftermarket Engineering at 412-458-3584.
COOPER CAMERON CORPORATION
John D. Mowery
Vice President and General Manager
c: D. T. Blizzard - CES/GC
J. M. Horne - CES/GC
B. C. Guntrum - CES/Alameda
R. L. Nimmo - CES/Alamada
R. A. Johnston - CES/Alameda
R. G. Billig - CES/GC
A. P. Steffan - CES/GC
July 9, 1996
Mr. Walter Haass Duke Engineering & Service
U. S. Nuclear Regulatory Commission 230 South Tryon St.
One White Flint North P. O. Box 1004
Washington, DC 20555 Charlotte, NC 28201-1004
Attn. G. A. Harrison
Carolina Power and Light Co.
Harris Nuclear Project Duke Power Co.
P. O. Box 165 Nuclear Generation Dept.
New Hill, NC 27662 P. O. Box 1006
Attn; William Robinson Charlotte, NC 28201-1006
Vice President Attn: Mgr., Nuclear Safety
Carolina Power and Light Co. Duke Power Co.
P. O. Box 1551 Nuclear Generation Dept.
Raleigh, NC 27602 P. O. Box 1006
Attn: W. S. Orser Charlotte, NC 28291-1006
Executive Vice President Attn: W. T. Robertson
Attn: Vice President,
Carolina Power and Light Co. Procurement
Harris Nuclear Plant
P. O. Box 165 Entergy
New Hill, NC 27562 P. O, Box 429
Attn: Mickey Hamby Echelon One
1340 Echelon Parkway
Carolina Power and Light Co. Jackson, MS 39286-1995
Brunswick Nuclear Plant Attn: F. W. Titus (Fred)
NC Hwy. 87, 2-1/2 Mi. North Vice President, Engineering
Southport, NC 28461 Entergy
Attn: Roy A. Anderson P. O. Box 756
Vice President Port Gibson, MS 39150
Attn: C. R. Hutchinson (Randy)
Carolina Power and Light Co. Vice Pres., Operations-GGNS
Robinson Nuclear Plant
SC Hwy. 151 and 23, Box 790 Entergy
Hartsville, SC 29550 P. O. Box 756
Attn: C. S. Hinnant Port Gibson, MS 32150
Vice President Attn: D. L. Pace, Director
Cleveland Electric Illuminating
Perry Nuclear Power Plant Entergy
P. O. Box 97 P. O. Box 756
Perry, OH 44081 Port Gibson, MS 39150
Attn: Russell J. Tadyeh Attn: M. J. Meisner
Manager, Quality Control Director, NS&RA
Cleveland Electric Illuminating Manager, Quality Services
Perry Nuclear Power Plant Entergy Operations
P. O. Box 97 Box 756
Perry, OH 44081 Port Gibson, MS 39150
Attn: Harold M. Coon
July 9, 1996
Southern Nuclear Operating Mr. S. J. Tsuei
Company Director, Nuclear Safety Dept.
Vogtle Project Taiwan Power Company
P. O. Box 1295 242 Roosevelt Road, Sec. 3
Attn: Mgr., Nuclear Engineering Taipei, Republic of China
Mr. S. H. Soong
Georgia Power Co. Station Superintendent
Plant Vogtle Third Nuclear Power Station
P. O. Box 1600 Taiwan Power Company
Waynesboro, GA 30830 P.O. Box 39
Attn: Mr. W. S. Shipman Heng-Chun, Ping-Tung Hsein
General Manager Taiwan. 924 R.O.C.
Gulf States Utilities Mr. Koh, Kyoo-Kun
P. O. Box 220 Plant Manger, Kori 3 & 4
St. Francisville, LA 70775 Korea Electric Power Corp.
Attn: L. A. England 216 Ko-Ri Jangan-Up
Director Nuclear Licensing Yangsan-Gun
Kyung-Nam, Korea 026-950
Long Island Power Authority
Shoreham Nuclear Power Station Mr. Hong, Jo Boo
Box 628 Manager, Nuclear Power
North Country Rd. Generation Dept.
Wading River, NY 11792 Korea Electric Power Corp.
Attn: Mgr. Licensing & Regulatory 167, Samsong-Dong, Kangnam KU
Compliance Department Seoul, 135-791 Korea
Operating Experience Manager Mr. Lee, Hee-Sung
Tennessee Valley Authority Plant Manager, Yonggwang Nuclear Unit
1101 Market Street 1 & 2
BR 4J Korea Electric Power Corp.
Chattanooga, TN 37402 517, Kyema-Ri Hong Nong-Eup
Yonggwang-Gun Jeon Nam
TU Electric - Production Division
Group Vice President - Nuclear
400 North Olive Street, L.B. 81
Dallas, TX 75201
Attn: C. L. Terry
Washington Public Power Supply
P. O. Box 460
Richland, WA 99352
Attn: Mr. L. C. Oakes
Manager, WNP-1 Engineer
T. R. Ho, Superintendent
Taiwan Power Company
Kuosheng Nuclear Power Station
60 Pa-Tou Yoh-Liu Village
Wan L. Hsiang, Taipei Hsien
(20703), Taiwan, R.O.C.
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