Part 21 Report - 1998-151
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.
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