ML20140E403
| ML20140E403 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 12/20/1984 |
| From: | Mangan C NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (55(E)-84-45), (NMP2L-0305), (NMP2L-305), NUDOCS 8501100811 | |
| Download: ML20140E403 (3) | |
Text
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Y NIAGARA NuMOHAWK NSAGARA MOHAWK POWER CORPORAT10N/300 ERIE BOULEVARD WEST. SYRACUSE. N.Y.13202/ TELEPHONE (315) 4741511 December 20, 1984 (NMP2L 0305)
Mr. R. W. Starostecki, Director U. S. Nuclear Regulatory Commission a
Region I Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point - Unit 2 Docket No. 50-410
Dear Mr. Starostecki:
Enclosed is a final report in accordance with 10CFR50.55(e) for the problem concerning cable terminations involving heat shrinks or tapes.
This problem was reported to W. Lazarus of your staff on fk:tober 17, 1984.
An interim report was submitted via our letter dated Novenber 16, 1984.
Very truly yours, C. V. Mangan U Vice President i
Nuclear Engineering and Licensing CVM/GG:csb
( 0614H) xc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Commission s
Washington, DC 20555 R. A. Gram, NRC Resident Inspector ProjectFile(2) 8501100011 841220
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i NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT - UNIT 2 DOCKET NO. ' 50-410 Final Report for a Problem
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Concerning Cable Teminations Involving Heat Shrinks or Tapes (55(e)-84-45)
Description of the Problem The problem concerns the Category I cable terminations, involving-heat shrinks or tapes, that were completed without witnessing by Field Quality Control.
Specification No. NMP2-E061 A specifies that all Quality Assurance Category I teminations and splices involving heat shrinks or tapes be -mandatory hold points : requiring witnessing by Field Quality Control prior to the application of heat shrinks or tapes. The Field Quality Control inspector was not present for the required inspections.
Witnessing by Field Quality Control provides additional assurance for the following:
f 1.
Proper termination of wires 2.
Proper testing of insulation of QA Category teminations 3.
Proper landing and torque connections.
Analysis of Safety Implications I-
'The cables in quastion were disconnected 'and heat shrink insulation removed.
An inspection of cables identified the following nonconfonnances:
1.
.Calbes 2EJSAGL001-FR, Phases 2 and 3 did not have sufficient wire protrusion into the top of the lug.
Cable 2EJSAGLOO2-FR, Phase 3 had a crack in the cable jacket.
These nonconfomances are-documented in Nonconfomance and Disposition Report -
No. 8980 These nonconfonnances could have resulted in the improper operation of safety-related systems.
Therefore, if the problem were.to have remained uncorrected, it could have adversely affected the safety of operations of the plant. Thus, the criteria for reportability have been met.
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Correctiva Actions The inspector who failed to witness the subject cable teminations was subsequently teminated.
The following additional corrective actions were completed in accordance with Nonconfomance and Disposition Reports 8536, 8748, 8795, and 8980:
1.
Cables in question were disconnected and heatshrink insulation removed.
The correct number of compressions using the correct die was verified by Field Quality Control.
A visual inspection was done by Field Quality Control to verify that the conductor wires are present beyond the last compression. Heatshrink was then applied in accordance with the manufacturer's instruction.
2.
The cables were tested and reconnected in accordance with Specification No. NMP2-E061 A, with Field Quality Control witnessing the tests.
3 Proper landing and torque connections were verified by Field Quality Control for each cable temination to ensure that the torque values are in accordance with Specification No. NMP2-E061 A.