United States Nuclear Regulatory Commission - Protecting People and the Environment


ACCESSION #: 9805290304



                                        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]

                                        Enterprise [TradeMark]

                                        En-Tronic [Registered Trademark]

May 22, 1998                            Penn [TradeMark]

                                        Superior [Registered Trademark]



Our Ref: QCG-10483 (K5fa43)



Document Control Desk

U.S. Nuclear Regulatory Commission

Washington, D.C.  20555



Subject:  10 CFR 21 Notification, Enterprise DSR-4 and DSRV-4 Emergency

          Diesel



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, provides

initial notification and an interim report of a 10CFR Part 21 evaluation

associated with the 701 Digital Speed Control, Rev. G installed at

Southern Nuclear Company's Plant Vogtle and Texas Utilities Commanche

Peak.



Discussion:



These digital 701 governing systems are manufactured by Woodward Governor

Company of Fort Collins, Colorado and sold by Cooper Energy Services as

part number 2-02G-110-001, Woodward part number 9903-466, Revision G).

Revision G is the only revision of the subject part that has the

potential problem.  The Revision G controller design was recently

introduced by Woodward to address an anomaly found during laboratory

testing of the previous configuration.  Evaluations conducted by CES and

the two affected utilities at that time determined that this anomaly was

not credible in nuclear service.  Nevertheless, the original controllers

were being changed to the later revision to satisfy the Woodward

concerns.



An application problem has been identified with the Revision G Woodward

701 Digital Speed Control used on Emergency Diesel Generators.  It was

encountered during the spring outages at both Southern Nuclear Company's

Plant Vogtle and Texas Utilities Commanchie Peak Stations.  During the

outages, the Woodward 701 Digital Speed Controllers were being upgraded

from the original revision provided to the utilities by Cooper Energy

Services, to the current Revision G control.  Post-installation testing

revealed that high EMI/RFI levels affected the new controllers, whereas

the original controllers were unaffected.



Cooper Energy Services is working to identify the exact source/cause of

the problem, determine the solution, and evaluate the 10 CFR Part 21

applicability.  In the interim, the two utilities have placed the

original controllers back into service in order to keep the diesel

generators operational.



Page 2

May 22, 1998

Ref: QCG-10483 (K5fa-43)



A follow-up report will be provided no later than July 31, 1998.



Affected Sites:



     Southern Nuclear Company, Plant Vogtle

     Texas Utilities, Commanche Peak Station

     STP Nuclear Operating Company (Houston Light and Power Co.)



Sincerely,



COOPER ENERGY SERVICES



Peter DeFronzo

General Manager



Copies to:



Mr. Louis Ward, Southern Nuclear Company (Fax 205-992-7885)



Southern Nuclear Operating Company

Vogtle Project

P. O. Box 1295

Birmingham, AL 35201

Attn: Mgr., Nuclear Engineering and Licensing



Mr. Stephen Alexander

Nuclear Regulatory Commission

QA Vendor Insp. & Maintenance Branch

One White Flint North

Mailstop 9A1

Washington, DC 20555



TU Electric Company

P. O. Box 1002

Glen Rose, TX 76043

Attn: Group Vice President, Nuclear



STP Nuclear Operating Company

South Texas Project Electric

P. O. Box 289

Wadsworth, TX 77483



Attn:  General Manager

       Nuclear Assurance and Licensing



COOPER

ENERGY SERVICES



QUALITY ASSURANCE DEPT.

150 LINCOLN AVENUE

GROVE CITY, PA 16127

PHONE: (724) 458-3575  FAX: (724) 458-3461

DATE:



TO:



COMPANY:                                FAX:



FROM:



TELEPHONE:                              FAX:



NUMBER OF PAGES INCLUDING COVER:



   PLEASE CALL (724) 458-3575, IF YOU DID NOT RECEIVE ALL OF THE PAGES



            PLEASE NOTE  OUR NEW FAX NUMBER IS 724-458-3461.



GENERAL INFORMATION or OTHER                 EVENT NUMBER: 34281



LICENSEE: COOPER ENERGY SERVICES        NOTIFICATION DATE:  05/22/98

    CITY: GROVE CITY     REGION: 1      NOTIFICATION TIME:  16:10 [ET]

  COUNTY:                 STATE: PA     EVENT DATE:         05/22/98

LICENSE#:             AGREEMENT: N      EVENT TIME:           :  [EDT]

  DOCKET:                               LAST UPDATE DATE:   05/22/98



                                                  NOTIFICATIONS



                                        GENE KELLY/REG 1         RDO

                                        STUART RICHARDS/NRR      EO

NRC NOTIFIED BY:  PETER DeFRONZO        AL BELISLE/REG 2         RDO

HQ OPS OFFICER:   FANGIE JONES          JOHN PELLET/REG 4        RDO

                                        VERN HODGE               NRR

EMERGENCY CLASS:  NOT APPLICABLE

10 CFR SECTION:

CCCC 21.21          UNSPECIFIED PARAGRAPH



                               EVENT TEXT



10-CFR - PART-21 NOTIFICATION - ENTERPRISE DSR-4 AND DSRV-4 EMERGENCY

DIESEL



AN APPLICATION PROBLEM HAS BEEN ASSOCIATED WITH THE 701 DIGITAL

SPEED

CONTROL (REVISION 'G' CONTROLLER DESIGN) INSTALLED AT PLANTS VOGTLE

AND

COMANCHE PEAK.  THE SPEED CONTROLS ARE MANUFACTURED BY WOODWARD

GOVERNOR

COMPANY AND SOLD BY COOPER ENERGY SERVICES AS PART NUMBER

2-02G-110-001.

REVISION 'G' IS THE ONLY REVISION OF THE SUBJECT PART THAT HAS THE

POTENTIAL PROBLEM, AND IT WAS RECENTLY INTRODUCED TO ADDRESS AN

ANOMALY

OF PREVIOUS CONTROLLERS.  EVALUATIONS OF THE ANOMALY INDICATED NO

CREDIBLE PROBLEM IN NUCLEAR SERVICE.  THE ORIGINAL CONTROLLERS WERE

STILL

BEING REPLACED WITH THE LATER REVISION (REVISION 'G') TO SATISFY

WOODWARD

CONCERNS.



POST-INSTALLATION TESTING OF THE NEW CONTROLLERS REVEALED THAT

HIGH

EMI/RFI LEVELS AFFECTED THE NEW CONTROLLERS, WHEREAS THE ORIGINAL

CONTROLLERS WERE UNAFFECTED.  WORK IS PROGRESSING TO IDENTIFY THE

EXACT

CAUSE OF THE PROBLEM AND TO DETERMINE A SOLUTION.  IN THE INTERIM,

THE

TWO UTILITIES HAVE PLACED THE ORIGINAL CONTROLLERS BACK INTO

SERVICE TO

KEEP THEIR EMERGENCY DIESEL GENERATORS OPERATIONAL.



A FOLLOW-UP REPORT WILL BE PROVIDED NO LATER THAN JULY 31, 1998.



COOPER ENERGY HAS NOTIFIED SOUTHERN NUCLEAR OPERATING COMPANY

(VOGTLE

PROJECT), TU ELECTRIC COMPANY (COMANCHE PEAK), AND STP NUCLEAR

OPERATING

COMPANY (SOUTH TEXAS PROJECT) OF THIS 10-CFR-PART-21 REPORT.



*** END OF DOCUMENT ***



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