ML20236J105

Part 21 30 Day Written Rept Re Refurbished DB-25 Circuit Breaker Returned W/Missing Pin in Operating Mechanism.Spare DB-25 Circuit Breaker Was Inspected,Tested & Installed to Restore B Service Water Pump to Service

ML20236J105
Person / Time
Site:	Ginna
Issue date:	06/29/1998
From:	Mecredy R ROCHESTER GAS & ELECTRIC CORP.
To:	Vissing G NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-98 NUDOCS 9807080047
Download: ML20236J105 (4)

Text

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ROCHESik GAS AMD ELECTRIC CORPORATION

• BP EASTAVENUE, ROOlESTER, N Y I4649-0001 AREA CODE 716 546-2700 ROBERT C. MECREDY vice Pres, dent Nvdear Operchons June 29, 1998 U.S. Nuclear Regulatory Commission Document Control Desk Attn: Guy S. Vissing Project Directorate I-1 Washington, D.C. 20555

Subject:

10 CFR Part 21 30 Day Report R.E. Ginna Nuclear Power Plant Docket No. 50-244

Dear Mr. Vissing:

In accordance with 10 CFR Part 21, Reporting of Defects and Noncompliance, Section 21 (d) (3) (ii), which requires " Written notification failure to comply", to the NRC ... on the identification of a defect or a submitted. the attached 10 CFR 21 report is hereby Very truly yours,

'O _

J (C2; Robert C. Mecredy xc: Mr. Guy S. Vissing (Mail Stop 14B2)

Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation i ll U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Regional Administrator, Region I <

U.S. Nuclear Regulatory Commission I ld j 475 Allendale Road King of Prussia, PA 19406 U.S. NRC Ginna Senior Resident Inspector 9007080047 980629 PDR S ADOCK 05000244 PDR

7. . ..

, , 10CFR21 30 DAY WRITTEN REPORT I. NAME AND ADDRESS OF THE INDIVIDUAL INFORMING THE COMMISSION:

NAME: Robert C. Mecredy Vice President Nuclear Operations Group ADDRESS: Rochester Gas & Electric Corporation 89 East Avenue Rochester, New York 14649 II. IDENTIFICATION OF THE FACILITY, THE ACTIVITY, OR THE i BASIC COMPONENT SUPPLIED FOR SUCH FACILITY WHICH FAILS TO I COMPLY OR CONTAINS A DEFECT:

The facility is the R.E. Ginna Nuclear Power Plant. The basic component is a Westinghouse DB-25 circuit breaker.

This component was installed at Ginna Station in a Class 1E Safety Related 480 Volt AC bus. The circuit breaker was the power supply feed breaker for the "B" Service Water Pump (52/SWP1B).

III. IDENTIFICATION OF THE FIRH CONSTRUCTING THE FACILITY OR SUPPLYING THE BASIC COMPONENT WHICH FAILS TO COMPLY OR CONTAINS A DEFECT:

The DB-25 circuit breaker were refurbished by:  !

Westinghouse Replacement Component Services  !

Westinghouse Electric Corporation '

Nuclear Services Division Haymaker and Northern Pike Road Monroeville, PA 15146  :

The current refurbishment site is:

Westinghouse Electric Company Assembly & Test Facility Cheswick Site 2000 Cheswick Avenue Cheswick, PA 15024-1358 Page 2 l

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IV. NATURE OF THE DEFECT OR FAILURE TO COMPLY AND THE SAFETY

. . HAZARD WHICH IS CREATED OR COULD BE CREATED BY SUCH DEFECT OR FAILURE TO COMPLY:

The DB-25 circuit breaker was refurbished in 1992 and returned to Ginna Station with a missing pin in the operating mechanism. This pin is a subcomponent of the operating mechanism, is not separately identified in the 7

vendor manual, nor is it addressed as a customer-serviceable item. The absence of this pin is believed to have ~~ntrfbuted to the failure of the SWP1B circuit breaker to close on a manual signal (manipulation of the circuit breaker control switch) from the Main Control Board. This implies that the potential exists that the breaker would not close on an automatic demand and therefore would not be available to perform its safety function.

V. THE DATE ON WHICH THE INFORMATION OF SUCH DEFECT OR FAILURE TO COMPLY WAS OBTAINED:

The information was obtained on May 13, 1998. An attempt was made to start the "B" Service Water Pump during testing and the circuit breaker failed to close on a manual signal from the Main Control Board. During the troubleshooting the missing pin was discovered.

VI. IN THE CASE OF A BASIC COMPONENT WHICH CONTAINS A DEFECT OR FAILS TO COMPLY, THE NUMBER AND LOCATION OF ALL SUCH COMPONENTS IN USE AT, SUPPLIED FOR, OR BEING SUPPLIED FOR GINNA STATION:

There are forty-one, permanently installed DB-25 circuit breakers in the Screen House and Turbine Buildings at Ginna Station. Of these, eleven breakers are Class 1E Safety Related.

VII. THE CORRECTIVE ACTION WHICH HAS BEEN, IS BEING, OR WILL BE TAKEN; THE NAME OF THE INDIVIDUAL OR ORGANIZATION RESPONSIBLE FOR THE ACTION; AND THE LENGTH OF TIME THAT HAS BEEN OR WILL BE TAKEN TO COMPLETE THE ACTION:

A spare DB-25 circuit breaker was inspected, tested and installed to restore the "B" Service Water Pump to service in May, 1998.

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All of the remaining DB-25 breakers were visually

. , inspected by Ginna Station Electrical Maintenance personnel to verify that the pin in question was installed. No other breakers were found to be missing the pin.

VIII. ANY ADVICE RELATED TO THE DEFECT OR FAILURE TO COMPLY ABOUT THE FACILITY, ACTIVITY, OR BASIC COMPONENT THAT HAS BEEN, IS BEING, OR WILL BE GIVEN TO PURCHASERS OR LICENSEES:

The industry was notified via INPO Nuclear Network, Event

1. 34363. Both in-service and receipt inspections can verify the presence of the pin. It should be noted that the "B" Service Water Pump breaker was refurbished in 1992.

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