ML20140G448

Part 21 Rept Re Potential Defect in Component of Dsrv & Dsr Enterprise Standby Diesel Generator Sys.Recommends That Springs Be Inspected on Periodic Basis,Such as During Refueling Outages

ML20140G448
Person / Time
Site:	Perry, Catawba, Harris, Grand Gulf, Columbia, River Bend, Vogtle, San Onofre, Comanche Peak, Rancho Seco, Bellefonte, Shoreham
Issue date:	05/01/1997
From:	Cote R AFFILIATION NOT ASSIGNED
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-97 NUDOCS 9705090133
Download: ML20140G448 (6)

Text

, 150 Lincoln Avenue Grove City. PA 16121 1898 I

. Tel 412 458 8000 I

, . Fax 412 458 3574 Ajax9 COOPER cab rra*

ENERGY SERVICES Ue"*,',i'e*"*"*

En-Tronic@

Penn Superior @

May 1,1997 i Our Ref: OCG-10382 Document Control Desk I Enterpnse U.S. Nuclear Regulatory Commission Washington, D.C. 20555 P end en 1 l

Dear Sir:

In accordance with the requirements of the Nuclear Regulatory Commission Title 10, Chapter 1, Code of Federal Regulations, Par 121, 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 j following sites: '

l UTILITY SITE SERIAL NO. MODEL LILCO Shoreham 74010-12 DSR-48 )

ENTERGY Grand Gulf 74033-36 DSRV-16-4 4 GULF STATES River Bend 74039-40 DSR-48 i CP&L Shearon Harris r 4046-49 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 i 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

f' 000012

\qg gyggg,1 M') 1 L 9705090133 970501 DR ADOCK 050002 6

- -.- . - - . - . - . .~. -- . . . - - - - - _ ..

Pago2 OCG-10382

May 1,1997 3 i The specific springs under discussion are manufactured by Associated Spring in Corry,

I Pennsylvania. They are installed as a subcomponent of spare cylinder heads (4 springs l per cylinder head) or provided as individual spare components by Cooper Energy Services.

4 ,

j' 10 CFR 21 Report #157 was issued by Cooper Energy Services on June 19,1991 to ,

j.

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 l

had been no reported failure of valve springs in nuclear or commercial service. Action u

was taken to inspect all springs in CES inventory, enhance supplier inspection 4

procedures and recommend periodic inspection of all springs in service. ,

i During the summer of 1996 a broken valve spring was found at Duke Power's Catawba l 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 i this failure and believes it to be an isolated case but is issuing Report #157 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 i periodic basis, such as during refueling outages. Any springs with a visible draw mark  !

2 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  !

l procedures and should be considered to apply to all valve springs on Enterprise j Engines regardless of their original manufacturer.

{ lt should also be noted that a correction should be made to the original 10CFR21 i

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 i-approximately 740 hours0.00856 days <br />0.206 hours <br />0.00122 weeks <br />2.8157e-4 months <br /> (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.

i l Our evaluation of this potential problem was completed on March 26,1997, i

Sincerely,

! ~

COOPER CAMERON CORPORATION i

i ItAY R. M. Cote Vice President and General Manager 4

~

Page 3

.OCG-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, Eox 790 Hartsville, SC 295.',0 Attn: Department Manager Cleveland Electric illuminating Perry Nuclear Power Plant P. O. Box 97 Perry, OH 44081 Attn: Russell J. Tadych Manager, Quality Contro'

Page 4

.OCG-10382 May 1,1997 Cleveland Electric illuminating Perry Nuclear Power Plant P. O. Box 97 Perry, OH 44081  !

Attn: Harold M. Coon l

Cooper-Enterprise Clearinghouse i Duke Engineering & Service )

230 South Tryon St.  !

P.O. Box 1004 i Charlotte, NC 28201-1004 Attn: G. A. Harrison Duke Power Co.

Nuclear Generation Dept. ,

P. O. Box 1007 l Charlotte, NC 28201-1007 Attn: Mgr., Nuclear Safety i Duke Power Co.

Nuclear Generation Dept.

P. O. Box 1007

! Charlotte, NC 28201-1007 Attn: W. T. Robertson V. P. Procurement )

i Entergy P. O. Box 429 Echelon One i 1340 Echelon Parkway  ;

Jackson, MS 39286-1995 Attn: F. W. Titus Vice President, Engineering l Entergy i j P. O. Box 756 i

Port Gibson, MS 39150 Attn: C. R. Hutchinson Vice Pres., Operations-GGNS i Entergy i

P. O. Box 756 - l

> Port Gibson, MS 39150 Attn: D. L. Pace, Director Design Engineering-GGNS l

E '  !

1 Pag @5 i-

.OCG-10382 May 1,1997 i

! Entergy i P. O. Box 756

Port Gibson, MS 39150  !

i Attn: M. J. Meisner -

' Director, NS & RA l l

\

Manager, Quality Services j Entergy Operations  ;

Box 756 .- .

Port Gibson, MS 39150  !

i'  !

Southern Nuclear Operating Company  ;

Vogtle Project j i P. O. Box 1295  !

Birmingham, AL 35201 l l Attn: Mgr., Engineering l

and Licensing  !

) Georgia Power Co.  !

Plant Vogtle  !

. P. O. Box 1600

. Waynesboro, GA 30830 l

- Attn

Mr W. B. Shipman .!

General Manager .

Gulf States Utilities

P. O. Box 220 I

! St. Francisville, LA 70775 j 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 l Compliance Department i i Southern Califomia Edison

! San Onofre Nuclear Generating Station a P. O. Box 128 .

j San Clemente, CA 92672-0128 Attn: Manager, Nuclear Oversite Div.

i l.

l

, Pag 36 l l ,.- .OCG-10382 '

May 1,1997 Southern California Edison San Onofre Neulear Generating Station P. O. Box 128 San Clemente, CA 92672-0128 l Attn: ISEG Supervisor Sacramento Municipal Utility Disrict

Rancho Seco Nuclear Power Plant  ;

! 14440 Twin Cities Road l Herald, CA' 95638 l Attn: Vice Pres. & Gen. Mgr. t Tennessee Valley Authority  :

1101 Market Street, LP 4F .

Chattanooga,TN 37402  :

Attn: Operating Experience Manager i TU Electric - Production Division ,

Group Vice President - Nuclear Skyway Tower .

400 North Olive Street, L.B. 81 <

Dallas, TX 75201

Attn

C. L. Terry I

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8 a

't l

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