ML20115D200

Part 21 Rept Re Mfg Defect of Enterprise DSR-4 & DSRV-4 Edgs,Originally Mfg by Calcon Corp.Amot Control Corp Purchased Calcon Product Line & Maintains Design & Production.Valves Returned to Cooper Energy Svcs on 960131

ML20115D200
Person / Time
Site:	Perry, Catawba, Harris, Grand Gulf, River Bend, Vogtle, Comanche Peak, Bellefonte, Washington Public Power Supply System
Issue date:	07/09/1996
From:	Mowery J COOPER ENERGY SERVICES
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-96 QCG-10291, NUDOCS 9607150052
Download: ML20115D200 (5)

Text

._ ... ....

wwws L.A Dr.J 3 bla

@ 003

} q

. Jj s i t .. . . m A..%

• W t. Te 8 4 I O l .* 7. l M3 D - e J 12 dh b /A

,/

Amme COOPER C',,'l,,,,,,,,

ENERGY SERVICES ,

ra,~n+e-En Tronict July 9,1996 """'

Supenort Our Ref: OCG 10291 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555

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 (CES), a division of Cooper Cameron Corporation, hereby notifies the Commission of a c potential manufacturing defect of the Enterprise @ DSR-4 and DSRV 4 Emergency Diesel Generators (EDG's).

Discussion:

The potential defect concerns the starting air admission valves (block and vent valves Enterprise part number KR 001000. The valve operates on receipt of a start signal to admit stored air receiver pressure to the engine headers, beginning the process that roHs 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 (Vee) engine.

The valves were originally manufactured by Calcon Corporation. Amot Controls Corporation and has since purchased the Calcon product line and maintains the design production.

The potential defect was reported to CES by Entergy Operations. Inc.. River Bend Ste. tion (EOl 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 toil the engine. The second valve failed to cycle during EOI ABS bench test. The third valve successfutty passed the bench test but stuck open during its first use on engine.

m 9607150052 960709 PDR PT21 EECCOES 96 PDR l],

[ 'l-l P!bl G '

f%,1 2 i z l

. . .. m u m wa 10003

, Paga 2

. . July 9.1996 m OCG 10291 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 ro cause of rnalfunction. Probable contributing factors were spring discrepancies and valve body casting anomalies. While not found by itself to cause the reported failur all springs were noticeably bent or lacked squared and ground ends.

A recent poll of utilities indicated that no other significant failures have occurred sin the issuance and implementation of CES Service information Memo (S.I.M.) No. 37 (Redesigned spool assembly, Viton seals). S.I.M. 379 was issued 12/1/89.

CONCLUSION:

The investigative activities yielded no clear cause for the failures at EOl 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.

RECOMMENDATIONS:

1) Verify in-service valves each monthly surveillance run should be 4

n preceded by an air roll initiated by a single starting air admission valve. 1 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 78008-09 Texas Utilities Comanche Peak 76001-04 Tennessee Valley Authority Bellefonte 75080 83 Washington Public Power WNP-1 n 75084-85

sourca ocos e @oo4

. Pag 3 3 I

. . July 9,1996 QCG 10291 m (

if you have any questions concerning this report, please contact Andrew P. Steffan Supervisor, Quality Engineering at 412 458 3455 ,

Aftermarket Engineering at 412 458-3584. or Aonald G. Billig, Supervisor i

Sincerely, l

/ ~ COOPER CMVI RON CORPORATION

'.) .!//f'n v -

/gwfj%.

John D. h$dIwery j Vice President and General Manager

kil i cc: D. T. Blizzard - CES/GC J. M. Horne - CES/GC B. C. Guntrum CES/ Alameda R. L. Nimmo - CES/ Alameda e

R. A. Johnston CES/ Alameda '

R. G. Billig - CES/GC A. P. Steffan - CES/GC File: K5fa39 m

1

. .. . a uc.oo wa

@ 005 Pags 4 ,

July 9.1996 OCG-10291

.m Copies to:

Mr. Waher Haass Cooper-Enterprise clearinghouse Duke Engineering & Service U.S. Nuclear Regulatory Commission 230 South Tryon St.

One White Flint North washington. DC 20555 P.O. Box 1004 Charlotte NC 28201 1004 Attn: G. A. Harrison Carolina Power and Light Co.

Harris Nuclear Project P. O. Box 165 Duke Power Co.

New Hill. NC 27562 Nuclear Generation Dept.

Attn; P. O. Box 1006 William Robinson Vice President Charlotte. NC 28201-1006 Attn: Mgr.. Nuclear Safety EC050 Carolina Power and Light Co.

' P. O. Box 1551 Raleigh. NC 27602 Duke Power Co.

Attn: Nuclear Generation Dept.

W. S. Orser

, P. O. Box 1006 Executive Vice President Charlotte, NC 20201-1006 Attn: W. T. Robertson Carolina Power and Light Co.

Harris Nuclear Plant Vice President. Procurement P. O. Box 165 Entergy New Hill NC 27562 I Attn: P. O. Box 429 Mickey Harnby n Echelon One 1340 Echelon Parkway Carolina Power and Light Co.

Jackson. MS 39286 1955 Brunswick Nuclear Plant Attn:

j NC Hwy. 87,21/2 Mi. North F. W. Titus (Fred)

Box 10429 Vice President. Engineering Southport NC 28461 Entergy Attn: Roy A. Anderson i' P. O. Box 756 Vice President Pod Gibson. MS 39150 Attn: C. R. Hutchinson (Randy) j Carolina Power and Light Co. -

!' Vice Pres., Operations-GGNS

' Robinson Nuclear Plant SC Hwy.151 and 23, Box 790 Entergy Hartsville. SC 29550 Attn: P. O. Box 756 C. S. Hinnant Port Gibson, MS 39150 Vice President Attn: D. L. Pace, Director Design Engincering-GGNS Cleveland Electric illuminating Perry Nuclear Power Plant Entergy P. O. Bor 97 Perry. OH 44081 P. O. Box 756 Attn:

Poft Gibson, MS 39150 Russell J. Tadych Attn: M. J. Meisner Manager. Quality Control Director. NS&RA 3

Cleveland Electrio illuminating Manager. Quality Services

, Perry Nuclear Power Plant Entergy Operations

. ^ P. O. Box 97 Box 756 4

Perry. OH 44081 Attn: Port Gibson. MS 39150

Harold M. Coon 1

• • ...- m.oo u

% 006 Page5 ,

July 9,1996 OCG-10291 m

Southern Nuclear Operating Company Mr. S. J. Tsuel Vogtie Project P. O. Box 1295 Director, Nuclear Safety Dept.

Birmingham. AL 35201 Taiwan Power Company Attn: 242 Roosevelt Road, Sec. 3 Mgr. Nuclear Engineering Taipel. Republic of China and Licensing Georgia Power Co. Mr. S. H. Soong Plant Vogtle Station Superintendent P. O. Box 1600 Third Nuclear Power Station Waynesboro, GA 30830 Taiwan Power Company Attn: Mr. W. B. Shipman P.O. Box 39 General Manager Heng Chun, Ping Tung Hsein Taiwan,924 R.O.C.

Gulf States Utilities P. O. Box 220 Mr. Koh. Kyoo Kun Plant Manger, Kori 3 & 4 St. Franciaville. LA 70775 Attn: L. A. England Korea Electric Power corp.

216 Ko-Ri Jangan-Up Director Nuclear Licensing Yangsan-Gun Kyung Nam, Korea 020 950 Long Island Power Authority Shoreham Nuclear Power Station Box 628 North Country Rd.

Mr. Hong Jo Boo Wading River. NY 11792 Manager. Nuclear Power Generation Dept.

n Attn: Korea Electric Power Corp.

Mgr. Licensing & Regulatory Compliance Depa tment 167, Samsong Dong. Kangnam KU Seoul,135 791 Korea Mr. Lee. Hee-Sung Operating Experience Manager Tennessee Valley Authority Plant Manager. Yonggwang Nuclear Unit 1

• 2 1101 Market Street Korea Electric Power Corp.

BR 4J 517 Kyema-Ri Hong Nong-Eup Yonggwang Gun Jeon Nam Chattanooga, TN 37402 Korea 513-880 TU Electric . Production Division Group Vice President Nuclear Skyway Tower 400 North Olive Street, L.B. 81 Dallas, TX 75201 Attn: C. L. Terry Wa.shington Pubile Power Supply P. O. Box 460 Richland. WA 99352 Attn: Mr. L. C. Oakes Manager. WNP 1 Engineer T. R. Ho. Superintendent O Taiwan Power Company Kuosheng Nuclear Power Station 60 Pa.Tou Yeh-Llu Village Wan Li Hsiang, Taipei Hsien (20703). Taiwan R.O.C.

-. m -