ML19340C726

Part 21 Rept Re Loose Wire Terminations on Potter & Brumfield AMF Type Relays Used in MSIV Leakage Control Sys Panels,Initially Reported on 801104.Constructor Evaluation of GE Rept Expected by 810206

ML19340C726
Person / Time
Site:	Grand Gulf
Issue date:	12/04/1980
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-80-323-000 10CFR-050.55E, 10CFR-50.55E, AECM-80-302, NUDOCS 8012170304
Download: ML19340C726 (3)

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.( Helping Evild Mississippi M ,. mat P. O. B O X 16 4 0. J A C K S O N. MIS SIS S!P PI 3S205 J AMES P. McGAUGHY. JR. December 4, 1980 ass Stah? vrCg PmE5 CENT Office of Inspection & Enforcement U. S. Nuclear Regulatory Co==ission Region II 101 Marietta Street, N.W.

Suite 3100

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Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Director

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-l.14/417 File 0260/1!525/15526 PRD-80/68, Status Report, P&B A':F Type Relay Ter=inatiens AECM-80/302 On November 4, 1980, Mississippi Power 6 Light Company noti-fied Mr. J. Rausch of your office of a Potentially Reportable De-ficiency (PRD) at the Grand Gulf Nuclear Station (GCNS) construction site concerning loose wire ter.inations en Potter and Eru. field AMF type relays used in the Main Stear Isolation Valve Leaka;;c Control System Panels.

We are continuing to investigate :he safety implications and reportability of this catter under 10CTR50.55(e) and 10CFRy . Our status report is attached. Bechtel Quality Assurance Recuest QAR F-258 has been assigned to track this iter. We expect tc provide our final report on this matter by March 6, 1981.

Yours truly, M-

[/ V J. P. McGaughy, Jr.

WDH:=t Attachment cc: Mr. N. L. Starpley Mr. Victor Stello, Director-l ' . [. J,T" 27 Mr. R. B. McGehee Division of Inspection L Enforcement Mr. T. B. Conner U. S. Nuclear Regulatory Commission Washington, D.C. 20535 Member Middle South Utilities System

Attachment to AECM-80/302 Page 1 of I STATUS REPORT FOR PRD-80/6S I. Description of the Deficiency The Grand Gulf Nucle:1r Station uses Potter & Brumfield AMF type relays in the Main Steam Isolation Valve Leakage Control System panels. While work was being perfor=ed on Panel 1H13-P655, it was noted that #16 AWG wires connected to the AMF type relays had broken loose from their ter=inations. A washer had been provided at these terminations to hold the wire strands without the use of a lug attached to the wire. The wires that were at-tached to the relays using lugs did not have this problem.

II. Approach to Resolution Mississippi Power & Light Co=pany is working with the constructor to resolve this deficiency by:

1. Determining the extent of the defi:iency,

2. Evaluating impact on safety of plant operations, and

3. Determining and i=plementing corrective actions and actions to preclude occurrence.

III. Status of Pronosed Resolution The constructor requested the General Electric Company to evaluate this condition for extent, affect on safety, and ccrrective action.

Bechtel Quality Assurance Request QAR ?-255 has been assigned to track this iten. We expect to receive a complete evaluation of this response from the constructor by February 6, 1981.

Based on this schedule, we expect to provide our final determina-tion of reportability and proposed corrective actions by March 6, 1981.

IV. Reason For Delav of Final Report The NSSS vendor has not completed investigative actions.

V. Final Report Date March 6, 1981 m c g g N J\ u =

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