3F0295-15, Part 21 Rept Re GE Supplied Constant Voltage Transformers (Cvt).Vendot Supplied FPC W/Instructions on Mod of Cvts Located in Installed VBIT-1D,to Return Output Voltage to Required Values & FPC Modified Cvts

Part 21 Rept Re GE Supplied Constant Voltage Transformers (Cvt).Vendot Supplied FPC W/Instructions on Mod of Cvts Located in Installed VBIT-1D,to Return Output Voltage to Required Values & FPC Modified Cvts

ML20080M710
Person / Time
Site:	Crystal River
Issue date:	02/27/1995
From:	Beard P FLORIDA POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-95 3F0295-15, 3F295-15, NUDOCS 9503030338
Download: ML20080M710 (3)

Text

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February 27, 1995 3F0295-15 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555

Subject:

10 CFR 21 Report - Constant Voltage Transformers

Dear Sir:

Attached is a 10 CFR 21 Report which is submitted to provide supplemental -

information to our Fa~x notification on January 27, 1995 relative to GE Nuclear Energy supplied constant voltage transformers.

Sincerely, P. M. Beard, Jr.

Senior Vice President Nuclear Operations PMB/JAF:ff Attachment xc: Regional Administrator, Region II Senior Resident Inspector NRR Project Manager 0000CS carstat nivia Ettacy c0MPLEX: is7eo w Pow un. s + cry.w n .. rhwed. 3442s470s e too4i 7ss44ee 9503030338 950227 ' "** * ""*"r ,

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f 10 CFR 21 REPORT l

REPORTED BY:

Florida Power Corporation (FPC),

Crystal River Unit 3 (CR-3),

15760 W Power Line Street  ;

Crystal River, FL 34428-6708 FPC

Contact:

James A. Frijouf, Nuclear Regulatory Specialist, (904) 563-4754.

CONPONENT SUPPLIER: [

GE Nuclear Energy, 175 Curtin Ave., San Jose, CA 95125 Purchased by FPC under Purchase Order (PO) # F740926D and F84c"19D.

FPC part No. 0068020058.

CONPONENT DESCRIPTION:

Constant Voltage Transformer, GE Part #: DJ 265A 1824P 001 {

Model Number: 9T91Y7244 Serial Numbers: 94G139-0001-D; 94G139-0002D; 94G657-001D; and 94G657-002D DISCOVERY DATE:

Notified NRC Operations Center via Fax at 1605 on January 27, 1995 NUNBER OF CONPONENTS:

FPC purchased four constant voltage transformers (CVT) under the two P0s listed above. Two were installed in vital bus inverter (VBIT-1D) in December 1994, while the remaining two were located in the CR-3 warehouse, awaiting installation in VBIT-1B.

DESCRIPTION:

On January 26,1995 at 1100, FPC personnel at CR-3 determined that, based on additional information received from the vendor following receipt and acceptance, two CVTs received for installation in VBIT-18 did not meet the FPC purchase order requirements. It was determined that the vendor (GE Nuclear) used an incorrect acceptance criteria for the qualification test and thus the FPC specified acceptance criteria used was not met by the CVTs.

The P0 required the vendor to supply product quality certification attesting to full P0 compliance [ Certificate of Conformance (C of C)] to ensure the qualification of the supplied transformers. The CVTs were to be provided as Nuclear Grade items with the provisions of 10 CFR 21 applicable. The specifications were based on vendor supplied data which called for a CVT with 118 VAC output with a tolerance of +/- 1%. Based on the supplied C of C the two CVTs were accepted. Motivated by an unrelated issue, FPC engineers subsequently requested and received a _ test report from the vendor. This test report reflected a discrepancy between the P0 required CVT voltage of 118 +/- 1% (116.8 to 119.2 volts), and by the tested CVT voltage of 117 +/- 1% (115.8 to 118.2 volts).

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, U. S. Nuclear Regulatory Commission

- 3F0295-15 .

Page'3 of 3 Having found this discrepancy, FPC personnel reviewed , similar test reports

-accompanying the two CVTs which were received earlier and installed in vital bus inverter 1-0 (VBIT-ID) in December 1994. The acceptance criteria used in this instance was likewise incorrect.

CORRECTIVE ACTION:

The NRC was notified of this potential 10 CFR 21 issue by FPC and the vendor was

- also notified of this discrepancy.

The vendor supplied FPC with instructions on the modification of the two CVTs located in the installed VBIT-lD, to return output voltage to the required values. FPC issued a Field Change Notice (FCN), modified the CVTs and performed a Modification Approval Record (MAR) Functional Test and Post Maintenance Test, and returned the installed vital bus inverter 1-D (VBIT-ID) to service.

Two CVTs located in the CR-3 warehouse, awaiting installation in VBIT-1B, were rejected from CR-3 stock and returned to the vendor for rework and testing to bring the CVTs within the specified requirements.

FPC recommended that GE Nuclear conduct a 10 CFR 21 review of this deviation in the event that these transformers have been supplied to other nuclear customers.

The vendor concurred,-and FPC will review the response from GE Nuclear to this issue. ,

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