ML20050A883

Final Part 21 Rept 81-01 Re Motor Terminal Block Voltage Rating in Limitorque Valve Control,Initially Reported 810121.Valve Will Be Inspected for Correct Size Control Terminal Block & Cable Terminations & Will Be Reworked

ML20050A883
Person / Time
Site:	LaSalle
Issue date:	03/25/1982
From:	Schroeder C COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-82-603-000 10CFR-50.55E, 3722N, PT21-82-603, PT21-82-603-000, NUDOCS 8204020360
Download: ML20050A883 (2)

Text

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. g Comm:nw:cith Edison i

O / one First National Plaza. Chicago, lihnois

, C/ Address Reply to: Post Office Box 767 Chicago, Illinois 60690 March 25, 1982 Mr. James G. Keppler, Regional Administrator Directorate of Inspection and Enforcement - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

LaSalle County Station Units 1 and 2 Motor Terminal Block Voltage Rating in Limitorque Valve Controls 10 CFR 50.55(e) #81-01 Final Report ps , j ' h' NRC Docket Nos. 50-373 and 50-374 p 9

References (a): L. DelGeorge to J. G. Keppler s MEC: 2D dated February 20, 1981. Same k- -

APRJ Subject, 30 Day Report. 3 Ugrgt. . 2 'I (b): L. DelGeorge to J. G. Keppler #N '

//

dated July 15, 1981. Same qp c(\

Subject, Interim Report. I .T ' M (c): C. Sargent letter to J. G. Keppler dated Septembe r 15, 1981. Same Subject, Interim Report.

(d): C. Sargent letter to J. G. Keppler dated October 29, 1981. Same Subject, Interim Report.

(e): C. Sargent letter to J. G. Keppler dated- Decembe r 15, 1981. Same Subject, In terim Report.

Dear Mr. Keppler:

The purpose o f this letter is to submit the Final Report

1. 81-01 regarding the subject Motor Terminal Block Modification.

This incident was initially reported to your o f fice on January 21, 1981, a 30-day report was made (Reference (a)), and several interim reports have been submitted (References (b),(c),(d), and (e)).

s204o20260 e20223 PDR S ADDCK 05000373 d}h ,

PDR

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i J. G. Keppler March 25, 1982 J

The Unit 1 status is as follows:

1. All Unit 1 limitorques have been inspected.

! 2. All Unit 1 limitorques that are fed by Safety-Related

! cables have had the motor terminal blocks removed and

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a lug to-lug connection installed.

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3. Unit 1 limitorques that are fed by Non-Safety-Related cables will have the motor terminal blocks removed and j a lug to lug connection installed prior to Unit 1 s criticality. (Note: Limitorque operators type SMC-04

and type PB do not contain a motor terminal block l because the motor leads are terminated on the control terminal block. These limitorques were inspected and i found to have the correct size control terminal block and the correct cable terminations. In addition, these types of limitorque operators are only fed by non-safety-related

cables at LaSalle County Station) .

The Unit 2 status is as follows:

Unit 2 limitorques will be inspected and reworked prior to Unit 2 fuel load. Limitorque operators type SMC-04 and type PB will be inspected for correct size control terminal I block and for the correct cable terminations, q If there are any further questions in this matter, please

contact this o f fice.

I Very truly yours, i

! @W 3hs/82.

C. W. Schroeder Nuclear Licensing Administrator

! 1m i

i j

cc: NRC Resident Inspector - LSCS Director of Inspection and j Enforcement - Washington, D.C. 20555 i

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'3722N i

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