ML20067A800

Interim Deficiency Rept Re Contact Leads on Hma Relays Supplied by Ge.Initially Reported on 820917.Deficiency Not Reportable Based on Design Function of Relay C61A-K2.Rept for Unit 2 Hma Relays Will Be Submitted by 831031

ML20067A800
Person / Time
Site:	Perry
Issue date:	11/24/1982
From:	Davidson D CLEVELAND ELECTRIC ILLUMINATING CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8212020296
Download: ML20067A800 (2)

Text

'

THE CLEVELAND ELECTRIC ILLUMIN ATING COMPANY P O. BOX 5000 m CLEVELAND. OHlo 44101 m TELEPHONE (216) 622-9800 m ILLUMINATING BLDG e SS PUBLIC SOUARE Serving The Best Location in the Nation Dalwyn R. Davidson VICE PRESIDENT SYSTEM ENGWe ERING ANO CONSTRUCTION November 24, 1982 Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commissior 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Contact Leads on HMA Relays Supplied by General Electric

[RDC 61(82)]

Dear Mr. Keppler:

This letter is being submitted to replace our letter dated October 29, 1982, which discussed the HMA relays supplied by the General Electric Company (GE) to The Cleveland Electric Illuminating Company (CEI) for use in Perry Nuclear Power Plant, Unit 1. Our first report on this subject was dated September 17, 1982. The letter dated October 29, 1982, contained inaccurate information concerning our evaluation of the deficiency. A revised description of the results of the inspection for the Unit 1 HMA Relays is contained in this letter, as well as an analysis of the safety implication and the corrective action taken.

Description of Deficiency During a review of documentation related to implementation of the GE Field Disposition Instruction (FDI) WNQB for Unit I conducted after filing our report on October 29, 1982, it was determined that the inspection of the HMA relays supplied for Unit I had actually been performed in July 1982. This inspection identified two relays as having insufficient lead to terminal spacing. The deficient relays were number E12A-K18A, located in control room panel 1H13-P629, and number C61A-K2, located in local panel IC61-P001.

The inspection conducted September 30, 1982, discussed in our letter dated October 29, 1982, was performed to assure completion of corrective action only and was not properly characterized in our letter.

Analysis of Safety Implications The design function of relay E12A-K18A is to automatically start Residual Heat Removal (RHR) pump "A" during LOCA conditions. Failure of the relay would result in the failure of RHR system "A" to perform its intended safety function.

This constitutes a reportable deficiency per 10CFR50.55(e). It should be noted that RHR System "B" would still be operable. The equivalent relay in the "B" System was inspected and found to be acceptable.

8212020296 821124 PDR ADOCK 0500044o NOV 2 6 082-

$$c&

..' ' Mr. Jrmea G. Kipp12r Nav :btr 24, 1982 The design function of relay C61A-K2 is to energize the turbine tripped alarm.

The turbine system is non-essential to safety and, therefore, the deficiency concerning this relay is in effect not reportable.

Corrective Action As prescribed by FDI WNQB, the relays identified as having insuf'.cient lead to terminal spacing were corrected by assembling heat shrinkable insulating tubing over the contact leads using instructions set forth in the FDI.

Implementation of the corrective action resulted in completion of the FDI September 29, 1982.

This completes the evaluation of the reportable condition concerning the Unit 1 HMA relays. All affected Unit I relays have been inspected and the necessary corrective action successfully completed.

The report for the Unit 2 HMA relays will be submitted by October 31, 1983.

ncere Dalwyn R. Davidson Vice President System Engineering and Construction DRD:pab cc: Mr. M. L. Gildner NRC Site Office Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 U.S. Nuclear Regulatory Commission c/o Document Management Branch Washington, D.C. 20555 l

l

_ ~ _. _

._m . . _ ___- _ .