ML20076E517

RO 50-336/83-25:on 830811,during Fuel Insp of Westinghouse Mfg Fuel Assemblies,Discovered Four Severed Upper End Fitting Springs.Cause Unknown.Assemblies Undergoing 100% Insp.Exam of Discharged C-E Fuel Planned

ML20076E517
Person / Time
Site:	Millstone
Issue date:	08/12/1983
From:	Mroczka E NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
MP-5301, RO-50-336-83-25, NUDOCS 8308240513
Download: ML20076E517 (2)

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HARTFORD. CONNECTICUT 06101 "ll:==;f;l=l"~~ R T) N 6911 L L J  ::::'=:::='"? l07 August 12, 1983 Dr. Thmas E. Murley MP-5301 Regional Administrator, Region I U.S. Nuclear Regulatory Cmmission 631 Park Avenue King of Prussia, Pennsylvania 19406

Reference:

Facility Operating License No. DPR-65 Docket No. 50-336 Reportable Occurrence RO 50-336/83-25

Dear Dr. Murley:

This letter provides notification of Reportable Occurrence 83-25 pursuant to the requirments of Millstone Unit 2 Appendix A Technical Specifications, Section 6.9.1.8.i. This report concerns the discovery, during fuel inspections, of conditions not specifically considered in the Safety Analysis Report or Technical Specifications that ney require r medial action or corrective measures to prevent the existence or developrent of an unsafe condition.

During spent fuel inspection of Westinghouse manufactured fuel on August 11,1983, four (4) severed upper end fitting springs were discovered.

Each Westinghouse manufactured fuel assmbly hcs four (4) coil springs to provide additional holdown force during operation. These four (4) springs are empressed by the fuel alignment plate to provide the holdown force.

Four (4) fuel assenblies to date have eAuftited severed springs, one (1) severed spring in each of the four (4) fuel assemblies. Three (3) of the severed springs were in twice burned Westinghouse manufactured fuel and one (1) severed spring in once burned Westinghouse manufactured fuel.

One hundred percent inspection is now in progress on Westinghouse ranufactured fuel. Examination of discharged Cmbustion Engineering manufactured fuel is planned, although the amount to be examined is undefined at this time.

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e Pending results of further examinations, the failure mechanism is

unknown.

, Further infonnation will be provided, if available, in the 14 day report.

Very truly yours, NORTHEAST NUCLEAR ENEEGY CmPANY i

Fm: Edward J. Mroczka Station Superintendent Millstone Nuclear Power Station d

BY: Ri J. Herbert 1

Station Services Superintendent Millstone Nuclear Power Station

! FJM/JJP: pdm cc: Director, Office of Management Information and Program Control, M shington, D.C. (3)

U.S. Nuclear Regulatory Canission, c/o Document Management Branch, M shington, D.C. 20555 i

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