ML20078H273

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Informs That CPSES Did Not Experience Failure of Woodward Ega Control Unit as Previously Reported
ML20078H273
Person / Time
Site: Comanche Peak  
Issue date: 11/08/1994
From: Schneider J
COOPER ENERGY SERVICES
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
QCG-9993, NUDOCS 9411170093
Download: ML20078H273 (7)


Text

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C60per Indu2tries

' Cooper-Iossem r Reciprocating Products Divisi:n 150 Lincoln Avenue Grove City, PA 16127-1898 412 454-8000 h

cooper Cooper Energy Services November 8,1994 Our Ref: OCG-9993 Enterprise Document Control Desk Report #166 U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Sir:

Cooper-Bessemer Reciprocating Products Division, a division of Cooper Industries, recently reported (Our Ref. OCG-9979) a potential problem with the Woodward EGA Control Box which controls speed / frequency on the Emergency Diesel Generator System.

Since then additional information has been obtained from both Texas Utilities Company-Comanche Peak Steam Electric Station (CPSES) and Woodward Governor Company which has resulted in a change in Cooper's evaluation of this previously reported failure.

Recent discussions indicate that CPSES did not experience a failure of the Woodward EGA Control Unit as previously reported. The leaking electrolytic capacitor has now t

been determined to be a leaking mylar capacitor, with the " leak" to be an internal voltage / current leakage which prevented this mylar capacitor from maintaining a steady state of voltage.

Cooper has revised the qualified life of the EGA Control Unit as reported earlier.

Additionally, Service Information Memo No. 389 has been issued describing the storage requirements of both electrolytic capacitors and mylar capacitors.

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QCG-9993

, November 8,1994 Page 2 If you have any questions regarding this matter, please contact R. G. Billig, Supervisor Enterprise Engineering or John R. Schneider, Quality Assurance at 412-458-8000.

Sincerely,

-l J. R. Schneider Manager, Quality Assurance JRS/kil cc:

J. D. Mowery - CES/GC B. R. Sedelmyer - CES/GC A. D. Gillette - CES/GC D. T. Blizzard - CES/GC J. M. Horne - CES/GC 4

R. G. Billig CES/GC B. C. Guntrum - CES/ Alameda R. L. Nimmo - CES/ Alameda Lee Duck - CES/ Alameda S. S. OwYoung - CES/ Alameda i

QCG-9993 November 8,1994 Page 3 cc:

J. R. Andrews - CES/ Alameda R. A. Johnston - CES/Aiameda Mr. Walter Haass - NRC One White Flint North Mailstop 9D4 Washington, DC 20555 Entergy Operations P. O. Box 429 Echelon One 1340 Echelon Parkway Jackson, MS 39286-1995 Attn:

T. H. Cloninger Vice Pres. Nucl. Eng.

Carolina Power and Light Co.

Harris Nuclear Project P. O. Box 165 New Hill, NC 27562 Attn:

William Robinson Vice President Carolina Power and Light Co.

P. O. Box 1551 Raleigh, NC 27602 Attn:

W. S. Orser Executive Vice President Carolina Power and Light Co.

i Harris Nuclear Plant P. O. Box 165 New Hill, NC 27562 Attn:

Mickey Hamby Carolina Power and Light Co.

Brunswick Nuclear Plant NC Hwy. 87,2-1/2 Mi. North Box 10429 Southport, NC 28461 Attn:

Roy A. Anderson Vice President Carolina Power and Light Co.

Robinson Nuclear Plant SC Hwy.151 and 23, Box 790 Ha'1sville, SC 29550 Attn:

C. S. Hinnant Vice President

1 QCG-9993 November 8,1994 Page 4 cc:

Cleveland Electric illuminating Perry Nuclear Power Plant P. O. Box 97 Perry, OH 44081 Attn:

M. Lister Cleveland Electric illuminating Perry Nuclear Power Plant P. O. Box 97 Perry, OH 44081 Attn:

Russell J. Tadych Manager, Quality Control Cleveland Electric liluminating 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 Vice President, 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

QCG-9993 Nov::mb:r 8,1994 Page 5 cc:

Entergy P. O. Box 756 Port Gibson, MS 39150 Attn:

D. L. Pace, Director Design Engineering-GGNS 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 Guit States Utilities P. O. Box 220 St. Francisville, LA 70775 Attn:

L. A. England Director Nuclear Licensing Southern California Edison San Onofre Nuclear Generating Station P. O. Box 128 San Clemente, CA 92672-0128 Attn:

Manager, Nuclear Oversite Div.

Southern California Edison San Onofre Nuclear Generating Station P. O. Box 128 San Clemente, CA 92672 Attn:

ISEG Supervisor

QCG-9993 Nov mb:r 8,1994 Page 6 cc:

Sacramento Municipal Utility District Rancho Seco Nuclear Power Plant 14440 Twin Cities Road Herald, CA 956638 Attn: Vice Pres. & Gen. Manager Tennessee Valley Authority 1101 Market Street, LP 4F Chattanooga, TN 37402 Attn: Mr. M. J. Fecht Manager, Nuclear Experience Review TU Electric - Production Division Group Vice President - Nuclear Skyway Tower 400 North Olive Street, L.B. 81 Dallas, TX 75201 Attn: W. J. Cahill, Jr.

Mr. Koh, Kyoo-Kun Plant Mgr., Kori 3 & 4 Korea Electric Power Corp.

216 Ko-Ri Jangan-Up Yangsan-Gun Kyung-Nam, Korea 626-950 Mr. Hong, Jo Boo Manager, Nuclear Power Generation Dept.

Korea Electric Power Corporation 167, Samsong-Dong, Kangnam KU Seoul,137-791 Korea Mr. Lee, Hee-Sung Plant Mgr., Yonggwang Nuclear Unit 1 & 2 Korea Electric Power Co.

517, Kyema-Ri Hong Nong-Eup Yonggwang-Gun Jeon Nam Korea 513-880 Mr. T. R. Ho, Superintendent Taiwan Power Company Kuosheng Nuclear Power Station 60 Pa-Tou Yeh-Lit Village Wan Li Hsiang, Teaei Hsien (20703), Taiwan, R.O.C.

A.H.Jeng Director, Nuclear Safety Dept.

Taiwan Power Company 242 Roosevelt Road, Section 3 Taipei 100, Republic of China

QCG-9993 November 8,1994 Page 7 cc:

S. H. Soong Station Superintendent Third Nuclear Power Station Taiwan Power Company P. O. Box 39 Heng-Chun, Ping-Tung Hsein Taiwan, 924 R.O.C.

File: K5fa33

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