United States Nuclear Regulatory Commission - Protecting People and the Environment


ACCESSION #: 9802020210







POWER REACTOR                           EVENT NUMBER: 33613



FACILITY: SUMMER         REGION: 2      NOTIFICATION DATE:  01/28/98

UNIT:     [1] [ ]  [ ]   STATE: SC      NOTIFICATION TIME:  15:42 [ET]

RX TYPE:  [1]  W-3-LP                   EVENT DATE:         01/27/98

                                        EVENT DATE:         17:00 [EST]



NRC NOTIFIED BY:  MICHAEL ZACCONE            NOTIFICATIONS

HQ QPS OFFICER:  BOB STRANSKY



EMERGENCY CLASS:  NOT APPLICABLE        CHRIS CHRISTENSEN        RDO

10 CFR SECTION:

CCCC 21.21     UNSPECIFIED PARAGRAPH



                                        VERN HODGE               NRR



UNIT  SCRAM CODE    RX CRIT   INIT PWR  INIT RX MODE         CURR PWR

 1       N            Y        100     POWER OPERATION         100



CURR RX MODE

POWER OPERATION



                               EVENT TEXT



PART 21 REPORT REGARDING WOODWARD GOVERNORS FOR DIESEL

GENERATORS



THE FOLLOWING INFORMATION WAS SUBMITTED BY THE LICENSEE VIA

FACSIMILE:



"ON JANUARY 9, 1998, CONDITION EVALUATION REPORT 98-0038 AND

NONCONFORMANCE NOTICE (NCN) 98-0038 REPORTED THE FAILURE OF EG-A

CONTROL,

SERIAL NUMBER 1425251.  DUE TO POTENTIAL APPLICATIONS IN THE INDUSTRY

AND

THE SAFETY SIGNIFICANCE OF ITS APPLICATION AS A GOVERNOR CONTROL FOR

EMERGENCY DIESEL GENERATORS (EDGs), THIS FAILURE IS CONSIDERED TO BE

REPORTABLE UNDER 10 CFR PART 21. IN THIS CASE, V.C. SUMMER NUCLEAR

STATION ENSURED THAT ADEQUATE TESTING HAD BEEN PERFORMED TO THE

ASSOCIATED EG-A TO VERIFY ITS OPERABLE STATUS.  THE VENDOR, ENGINE

SYSTEMS, INCORPORATED (ESI), HAS BEEN NOTIFIED OF THIS SITUATION AND

UNDERSTANDS THAT A PART 21 NOTIFICATION IS BEING SUBMITTED BASED ON

THEIR

CERTIFICATION OF CONFORMANCE ON THE EG-A WITH INADEQUATE POST-

REFURBISHMENT BENCH TESTING BY THE VENDOR THAT DID NOT IDENTIFY

INTERMITTENT FAILURES IN ELECTRICAL COMPONENTS (SUCH AS

POTENTIOMETERS

AND ZENER DIODES).



A TEAM FROM VCSNS PROCUREMENT ENGINEERING FLEW TO THE VENDOR'S

REPAIR

FACILITY (WOODWARD GOVERNOR COMPANY) IN FORT COLLINS, CO, TO

EVALUATE

THEIR REPAIR PROGRAM.  FUTURE PURCHASE REQUISITIONS FOR EG-A

REPAIR/REFURBISHMENT WILL INCLUDE REQUIREMENTS FOR A 50 HOUR

BURN-IN AND

BENCH TESTING OF THE EG-A CONTROL FOR DETECTION OF INTERMITTENT

FAILURES."



                                                            NL-122

                                                            ATTACHMENT I

                                                            PAGE 1 OF 2



NRC NOTIFICATION EVENT NOTIFICATION WORKSHEET OMITTED.



This notification is made pursuant to 10 CFR Part 21



On January 9, 1998, Condition Evaluation Report 98-0038 and

Non-Conformance Notice (NCN) 98-0038 reported the failure of EG-A

control, serial number 1425251.  Due to potential applications in the

industry and the safety significance of its application as a governor

control for Emergency Diesel Generators (EDGs), this failure is

considered to be reportable under 10 CFR Part 21.  In this case, V. C.

Summer Nuclear Station ensured that adequate testing had been performed

to the associated EG-A to verify its operable status.  The vendor, Engine

Systems, Incorporated (ESI), has been notified of this situation and

understands that a Part 21 notification is being submitted based on their

certification of conformance on the EG-A with inadequate

post-refurbishment bench testing by the vendor, that did not identify

intermittent failures in electrical components (such as potentiometers

and zener diodes).



A team from VCSNS procurement engineering flew to the vendor's repair

facility (Woodward Governor Company) in Fort Collins, CO, to evaluate

their repair program.  Future purchase requisitions for EG-A

repair/refurbishment will include requirements for a 50 hr burn-in and

bench testing of the EG-A control for detection of intermittent failures.



Notifications omitted.



*** END OF DOCUMENT ***





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