Part 21 Report - 1998-451
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.
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