ML20147G367

Final Significant Deficiency Rept 221-2 Re Westinghouse Dc Motor Control Ctrs.All Deficient Wiring in 20D201,20D202 & 20D203 Dc Motor Control Ctr Compartments Reworked to Approved Wiring Drawings

ML20147G367
Person / Time
Site:	Limerick
Issue date:	02/23/1988
From:	Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
SDR-221-2, NUDOCS 8803080205
Download: ML20147G367 (3)

Text

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isru:=;* "; . l')UC Mr. W. T. Russell, Administrator United States Nuclear . Regulatory Conmission Attention: Doctsnent Control Clerk Washington, DC 20555 r

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Subject:

Limerick Generating Statlon, Unit 2 Significant Deficiency Report No. 221-2 / 3 6[

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Wectinghouse D.C. Motor Control Centers I

! NRC Construction Permit No. CPPR-107 i Flie: QUAL 2-10-2 SDP.No. 221-2

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Dear Mr. Russell:

In ecmpilance with 10CFR50.55Ce), we are submitting our final Significant Deficiency Report concerning the subject Westinghouse D.C.

,- Motor Control Centers.

We trust thtt this satisfactorily resolves the item. If further Information is required, please do not hesitate to contact us.

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^incerely, gpA 3>2/s/ee

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A Mh W JJM/kkf/021888802

- Attachment 94 i i Copy to: W. T. Russell, Adninistrator

. U.S. Nuclear Regulatory Conmission, Region 1 631 Park Avenue King of Prussia, PA 19406 R. A. Granm, Senior Resident Inspector Limerick Generating Station - Unit 2  :

U.S. Nuclear Regulatory Conmission I P.O. Box 46 Sanatoga, PA 19464 8803080205 880223 P" " " "

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NUCLEAR EtGINEERING DEPARTMENT ENGINEERING DIVISION

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• 4 Significant Deficiency Report - SDR No. 221-2

) Westinghouse D.C. Motor Control Centers

- Limerick Generating Station, Unit 2 NRC Construction Permit No. CPPR-107 3

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'T Descriotion of Deficiency 3

d 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 identifled the deficiencies in MCC's 20D201, 20D202, and 20D203 during an Internal wiring check of this equipment.

s The rrotor control centers were physically Installed but had not been energized. Nonconformance Report No.12622 reported the MCC 20D202 and 20D203 wirint deficiencies on 11/3/87. Nonconformance Report No. 12709 '

reported the MCC 20D201 wiring deficiencies on 11/24/87.

The wiring errors would have caused damage to equipment and the control circuits of eaulsment powered from the MCC's.

[ Corrective Action,:

f All deficient wiring in the 20D201, 200202, and 200203 0.C. motor control center compartrmnts was reworked to the approved wiring drawings.

The noter control center circuits have not been preoperational tested  :

yet.  ;

Safety Imolications:

i This problem represents a deficiency in the manufacture of the motor control conter coroartments. The Westinghouse Mctor Control l Centers were not built In accordance with the vendor supplied design '

drawings.

This problem has significant safety Impilcations because the problem wiring could have prevented safety-related equipment from perforTning its Intended safety function.

W JJM/4kf/02198801

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