ML20083L757

Interim Significant Deficiency Rept 84-04 Re Factory Wiring Workmanship of Main Control Board Furnished by York Electro Panel Control Co & Control & Relay Panels Furnished by Sys Control Corp.Initially Reported on 840301

ML20083L757
Person / Time
Site:	Beaver Valley
Issue date:	04/02/1984
From:	Woolever E DUQUESNE LIGHT CO.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
84-04, 84-4, NUDOCS 8404170354
Download: ML20083L757 (3)

Text

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.\W4 , l 2NRC-4-036 (412)787- 5141 Telecopy 8 Nuclear Construction Division April 2, 1984 Robinson Plaza. Building 2, Suite 210 Pittsburgh, PA 15205 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 ATTENTION: Dr. Thomas E. Murley Adminis trato r

SUBJECT:

Beaver Valley Power Station - Unit No. 2 Do c ke t No . 50-412 York Electro Panel Control Company and Systems Control Corporation Significant Deficiency Report No. 84-04, Interim Report Gentlemen:

This interim repo rt is in reference to the pot ent ially repo rt ab le Significant Deficiency relating to factory wiring workmans hip of the Main Control Board furnished by York Electro Panel Control Company and control and relay panels furnished by System Control Corporation. Duquesne Light Company not ified the Region I of fice that an evaluat ion unde r 10CFR50.5 5(e) was underway on March 1,1984.

Purs uant to the requirements of 10 CFR50.5 5 ( e) , an int erim repo rt is submitted, and it is pres ently ant icipat ed that a subseque nt repo rt on this subject should be submitted to the Regic I of fice by July 8,1985.

DUQUESNE LICHT COMPANY By . .

E. J U Woolever Vice President SDH/wjs At tachment cc: Mr. R. DeYoung, Director Of fice of Inspection and Enforcement (3) (w/a)

Mr. 1. Lacitra, NRC Project Manager (w/a)

Mr. G. Walton, NRC Resident Inspector (w/a)

INPO Records Center (w/a)

NRC Document Control Desk (w/a)

SUBSCRIBED AND SKORN TO BEFORE ME THIS A 8 DAY OF 8peLb , 1984.

k! i Not ary Public

' ANITA ELAINE REITER,i10TARY PUBUC B404170354 840402 -

PDR ADOCK 05000412 ROBINSON TOWNSHIP, ALLEGHENY COUNTY q MY COMMISSION EXPIRES OCTOBER 20, l986 h '

6

. United States Nuclear Rrguistory Commission

,' Dr. Thomas E. Murley Page 2 COMMONWEALTH OF PENNSYINANIA )

) SS:

COUNTY OF ALLEGHENY )

On this m2 day of /24 , /[ , be fo re me , a

/ .

Notary Public in and fo r - sa id Commonwe sith and County, pe rso nally ap pe ared E. J. Wooleve r , dio being duly swo rn , deposed and said that (1) he is Vice Pres ident of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set forth in the Submittal are true and correct to the best of his knowledge L

Notary Public 4

ANITA ELAINE REITER, NOTARY PUBLIC ROBINSON TOWNSHIP, ALLEGHENY COUNTY

, MY COMMISS!ON EXPIRES OCTOBER 20,1986 t

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< BEAVER VALLEY POWER STATION - UNIT NO. 2

, DUQUESNE LIGHT COMPANY Potential Significant Deficiency of Internal Wiring in York Electro Panel Control Company and Systems Control Corporation Class IE Electrical Equipment 1.0

SUMMARY

The BVPS-2 Site Quality Cont rol (SQC) group has repo rt ed numerous ins t ances of wh at ap pear to be poor workmansh ip in facto ry-ins talled wiring of the Main Control Board furnished by York Electro Panel Control Company and control ard relay panel s furnished by Sys tem s Control Corpo rat ion. This equipment was supplied under purch.ne orders 2BV-311 and 2BV-731, respectively. The ins t ances have been documented on Non-conformance and Disposition Reports prepared by SQC.

2.0 IMMEDIATE ACTION TAKEN Site ins pect ions were perfo rmed on a random basis by SWEC control systems enginee rs and represent at ives of York Electro Panel Co ntrol Company. Additional ins pect ions were performed by SQC, These ins pe c-t ions confirmed that there are ins tances of poor workmanship practices and the need for further analysis. Mr. S. D. Hall, Acting Manager of Regulatory Af fairs , BVPS-2, not ified Mr. Lowell Tripp, NRC Reg ion 1 O f fic e , of a pot ent ial report ab le significant deficiency on March 1, 1984.

3.0 DESCRIPTION

OF THE PROBLEM Specific instances reported include:

1. Nicked or broken strands in switchboard wire.

2. Excessive gaps between terminal lugs and wire insulation.

3. Bent lugs.

4. Poor crimping.

5. Tension on conductors and terminal lugs.

4.0 ANALYSIS OF SAFETY IMPLICATION The obse rved condi t ions , without further analysis, have been judged to have the pot ent ial to cause an elect rical failuce during a seismic event. Because the problems not ed above were observed on circuits in Class 1E electrical equipment , these problems could af fect the capabil-ity to safely shutdown the plant in the event of a design basis event.

5.0 CORRECTIVE ACTION TO REMEDY THE PROBLEM Ins pections will be pe rf( rd and any deficiencies not ed during the inspections will be analyzed and , if necessary, repaired to assure that the functional integrity of the equipment is maintained.

6.0 ADDITIONAL REPORTS An additional report will be issued by July 8,1985.