United States Nuclear Regulatory Commission - Protecting People and the Environment


LICENSEE: COOPER ENERGY SERVICES             

SITE: COOPER ENERGY SERVICES                EN NUMBER:34281

DOCKET:                                  EVENT DATE: 05-22-98

RX TYPE:                                 EVENT TIME:   :  

VENDORS:                                NOTIFY DATE: 05-22-98

EMERGENCY CLASS: N/A  REGION: 1 STATE: PA      TIME: 16:10

OPS OFFICER: FANGIE JONES             

10 CFR SECTION: CCCC  21.21               UNSPECIFIED PARAGRAPH



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 ALL THE AFFECTED SITES INCLUDING      

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. THE NOTIFICATION AS

RECEIVED DID NOT INDICATE THAT THE COMPONENTS WERE INSTALLED AT  

SOUTH TEXAS.                                                     



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