Part 21 Report - 1997-351
ACCESSION #: 9705090133
150 Lincoln Avenue
Grove City, PA 16127-1898
Tel 412 458 8000
Fax 412 458 3574
Ajax [Registered copy]
Coberra [Registered copy]
COOPER Cooper-Bessemer [Registered copy]
ENERGY SERVICES Enterprise [Trademark]
En-Tronic [Registered copy]
Penn Trademark]
Superior [Registered copy]
May 1, 1997
Our Ref: QCG-10382
Document Control Desk Enterprise
U.S. Nuclear Regulatory Commission Report #157
Washington, D.C. 20555 Amendment 1
Dear Sir:
In accordance with the requirements of the Nuclear Regulatory Commission
Title 10, Chapter 1, Code of Federal Regulations, Part 21, Cooper Energy
Services, a division of Cooper Cameron Corporation, hereby notifies the
Commission of a re-emphasis of a previously reported potential defect in
a component of a DSRV and DSR Enterprise Standby Diesel Generator System.
There exists a potential problem with intake and exhaust power valve
springs which could result in engine non-availability.
Cooper Energy Services has supplied these parts as replacement components
to the following sites:
UTILITY SITE SERIAL NO. MODEL
LILCO Shoreham 74010-12 DSR-48
ENTERGY 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 75010-13 DSRV-16-4
SO CAL ED San Onofre 75041-42 SDRV-20-4
CLEVELAND ELEC Perry 75051-54 DSRV-16-4
TVA Bellefonte 75080-83 DSRV-16-4
WPPSS WPPSSI 75084-85 DSRV-16-4
TU ELECTRIC Comanche Peak 76001-04 DSRV-16-4
GEORGIA POWER Vogtle 76021-24 DSRV-16-4
TVA Hartsville 77024-35 DSRV-16-4
SMUD Rancho Seco 81015-16 DSR-48
Page 2
QCG-10382
May 1, 1997
The specific springs under discussion are manufactured by Associated
Spring in Corry, Pennsylvania. They are installed as a subcomponent of
spare cylinder heads (4 springs per cylinder head) or provided as
individual spare components by Cooper Energy Services.
10 CFR 21 Report #157 was issued by Cooper Energy Services on June 19,
1991 to describe surface deficiencies found on valve springs in Cooper
Energy Services inventory. These deficiencies, characterized by draw
marks exceeding the depth allowed by specification, were noted on springs
from a 1986 manufacturing lot. There had been no reported failure of
valve springs in nuclear or commercial service. Action was taken to
inspect all springs in CES inventory, enhance supplier inspection
procedures and recommend periodic inspection of all springs in service.
During the summer of 1996 a broken valve spring was found at Duke Power's
Catawba Station during a routine maintenance inspection. No affect on
engine performance had been noted. This spring, recently returned to CES
for analysis, was found to be of the same 1986 vintage as those
previously described in Report #157. CES has reviewed this failure and
believes it to be an isolated case but is issuing Report #1 57 Amendment
1 to inform those affected of this failure and to re-emphasize the
recommended corrective action.
As previously reported, it is recommended that the subject springs be
inspected on a periodic basis, such as during refueling outages. Any
springs with a visible draw mark on its I.D. or any physical anomaly of
concern should be removed, discarded and replaced. This inspection
should be in each plant's mechanical maintenance procedures and should be
considered to apply to all valve springs on Enterprise Engines regardless
of their original manufacturer.
It should also be noted that a correction should be made to the original
10CFR21 Report #157 wording Page 2, Para. 5 read as follows, "The number
of operating hours is of concern as the fatigue failure resulting from
such an indication should occur within approximately 740 hours (10'
operating cycles)."
A copy of this letter will be sent to all of the sites referenced in
Paragraph 2 of this letter as indicated by the copy list.
Our evaluation of this potential problem was completed on March 26, 1997.
Sincerely,
COOPER CAMERON CORPORATION
R. M. Cote
Vice President and General Manager
Page 3
QCG-10382
May 1, 1997
cc: D. T. Blizzard - CES/GC
J. M. Horne - CES/GC
R. G. Billig- CES/GC
R. L. Nimmo - CES/Alameda
File: K5fa41 - Assoc. Spring Intake & Exh. Power Valve Springs
Mr. Walter Haass - NRC
One White Flint North
Mailstop 9D4
Washington, DC 20555
Carolina Power and Light
Harris Nuclear Project
P. O. Box 165, State Rd. 1134
New Hill, NC 27562
Attn: William Robinson
Vice President
Carolina Power and Light
P. O. Box 1551
Raleigh, NC 27602
Attn: Mgr. Nuclear Licensing
Carolina Power and Light Co.
Harris Nuclear Project
P. O. Box 165, State Rd. 1134
New Hill, NC 27562
Attn: Dept. Manager
Carolina Power and Light Co.
Robinson Nuclear Project
SC Hwy. 151 and 23, Box 790
Hartsville, SC 29550
Attn: Department Manager
Cleveland Electric Illuminating
Perry Nuclear Power Plant
P. O. Box 97
Perry, OH 44081
Attn: Russell J. Tadych
Manager, Quality Control
Page 4
QCG-10382
May 1, 1997
Cleveland Electric Illuminating
Perry Nuclear Power Plant
P. O. Box 97
Perry, OH 44081
Attn: Harold M. Coon
Cooper-Enterprise Clearinghouse
Duke Engineering & Service
230 South Tryon St.
P. O. Box 1004
Charlotte, NC 28201-1004
Attn: G. A. Harrison
Duke Power Co.
Nuclear Generation Dept.
P. O. Box 1007
Charlotte, NC 28201-1007
Attn: Mgr., Nuclear Safety
Duke Power Co.
Nuclear Generation Dept.
P. O. Box 1007
Charlotte, NC 28201-1007
Attn: W. T. Robertson
V. P. Procurement
Entergy
P. O. Box 429
Echelon One
1340 Echelon Parkway
Jackson, MS 39286-1995
Attn: F. W. Titus
Vice President, Engineering
Entergy
P. O. Box 756
Port Gibson, MS 39150
Attn: C. R. Hutchinson
Vice Pres., Operations-GGNS
Entergy
P. O. Box 756
Port Gibson, MS 39150
Attn: D. L. Pace,
Director Design Engineering-GGNS
Page 5
QCG-10382
May 1, 1997
Entergy
P. O. Box 756
Port Gibson, MS 39150
Attn: M. J. Meisner
Director, NS & RA
Manager, Quality Services
Entergy Operations
Box 756
Port Gibson, MS 39150
Southern Nuclear Operating Company
Vogtle Project
P. O. Box 1295
Birmingham, AL 35201
Attn: Mgr., Engineering and Licensing
Georgia Power Co.
Plant Vogtle
P. O. Box 1600
Waynesboro, GA 30830
Attn: Mr. W. B. Shipman
General Manager
Gulf States Utilities
P. O. Box 220
St. Francisville, LA 70775
Attn: L. A. England
Director Nuclear Licensing
Long Island Power Authority
Shoreham Nuclear Power Station
North Country Rd.
Wading River, NY 11792
Attn: Mgr. Licensing & Regulatory
Compliance Department
Southern California Edison
San Onofre Nuclear Generating Station
P. O. Box 128
San Clemente, CA 92672-0128
Attn: Manager, Nuclear Oversite Div.
Page 6
QCG-10382
May 1, 1997
Southern California Edison
San Onofre Nculear Generating Station
P. O. Box 128
San Clemente, CA 92672-0128
Attn: ISEG Supervisor
Sacramento Municipal Utility Disrict
Rancho Seco Nuclear Power Plant
14440 Twin Cities Road
Herald, CA 95638
Attn: Vice Pres. & Gen. Mgr.
Tennessee Valley Authority
1101 Market Street, LP 4F
Chattanooga, TN 37402
Attn: Operating Experience Manager
TU Electric - Production Division
Group Vice President - Nuclear
Skyway Tower
400 North Olive Street, L.B. 81
Dallas, TX 75201
Attn: C. L. Terry
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