ML20149N093

Final Deficiency Rept 221-2 Re Discrepancy Between Internal Control Wiring on Three Westinghouse Dc Motor Control Ctrs & Vendor Supplied Wiring on Schematic Drawings.Initially Reported on 871103.Wiring Compartments Reworked

ML20149N093
Person / Time
Site:	Limerick
Issue date:	02/23/1988
From:	Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Russell W NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
221-2, NUDOCS 8803010194
Download: ML20149N093 (2)

Text

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y_ , A, PHILADELPHIA ELECTRIC- COM PANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 1215)841 450o somon viSUn'u'sfo' UNI"nuctuan

' February 23, 1988 Mr. W. T. Russell, Administrator United States Nuclear Regulatory Ccmnission Attention: Docunent Control Clerk Washington,_DC 20555

Subject:

Limerick Generating Station, Unit 2 Significant Deficiency Report No. 221 Westinghouse D.C. Motor Control Centers NRC Construction Permit No. CPPR-107 Flie: QUAL 2-10-2 SDR No. 221-2

Dear Mr. Russell:

In ccrnpliance with 10CFR50.55(e), we are sutmitting our final Significant Deficiency Report concerning the subject Westinghouse D.C.

Motor Control Centers.

We trust that this satisfactorily resolves the Itan. If further infortnation is required, please do not hesitate to contact us.

Sincerely,

/

ddM/kkf/021888802 Attachnent

• I 8803010194 800223 PDR ADOCK 05000353 S PDR l

i

NUCLEAR EtGINEERING DEPARTMENT ENGINEERING DIVISION N2-1 2301 Market Street Significant Deficiency Report - SDR No. 221-2 Westinghouse D.C. Motor Control Centers Limerick Generating Station, Unit 2 NRC-Construct 1on Permit No. CPPR-107 Description of Deficiency The Internal control wiring on three (3) Westinghouse D.C. Motor Control Centers (MCC) did not agree with vendor supplied wiring or schematic drawings. PECo identified the deficiencies in MCC's 20D201, 20D202, and 20D203 during an Internal wiring check of this equipment.

The notor control centers were physically Installed but had not been energized. Nonconformance Report No.12622 reported the MCC 20D202 and 20D203 wiring deficiencies on 11/3/87. tbnconformance Report No.12709 reported the MCC 20D201 wiring deficiencies on 11/24/87.

The wiring errors would have caused damage to equipnent and the control circults of equiprent powered frcm the MCC's.

Corrective Action:

All deficient wiring in the 20D201, 200202, and 20D203 D.C. notor control center cormartrmnts was reworked to the approved wiring drawings.

The notor control center circuits have not been preoperational tested yet.

Safety irrolIcatlons:

This problem represents a deficiency in the manufacture of the trotor control center compartrmnts. The West Inghouse Motor Control Centers were not built in accordance with tha vendor supplied design drawings.

This problem has significant safety Irnpilcatinns because the problan wiring could have prevented safety-related equipmnt from perfonning its Intended safety function.

JJM/kkf/02198801

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