ML20083A818

RO 50-336/83-030:fuel Movement Occurred in Spent Fuel Pool While Credit Taken to Encl Bldg B Filtration Sys.B Facility Inoperable Due to Installation of Temporary Unqualified Block Wall

ML20083A818
Person / Time
Site:	Millstone
Issue date:	12/05/1983
From:	Mroczka E NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
MP-5575, NUDOCS 8312200416
Download: ML20083A818 (1)

Text

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• Administrator, Region 1 Office of Irispection and Enforcement U.S. Nuclear Regulatory Camtission 631 Park' Avenue King of Prussia, Pennsylvania 19406

Reference:

Facility Operating License DPR-65 Docket No 50-336 Reportable Occurrence R0-50-336/83-30

Dear Dr. Mirley:

This letter provides notification of Reportable Occurrence 83-30 pursuant to the requirements of Millstone Unit 2 Appendix A Technical Specifications, Section 6.9.1.8.b. This report concerns the operation of a~ system subject to a limiting condition of operation in a manner less conservative that the least conservative aspect of the limiting condition established in the technical specifications.

Fuel novement took place in the spent fuel pool while credit was taken for the B facility Enclosure Building Filtration System (EBFS). The B EBFS facility was discovered to be inoperable due to the installation of a tenporary block wall which was not seismically qualified.

It should be noted that both the A and B facilities were available.

However, no credit could be taken for the A facility due to a lack of emergency power (A Diesel out of service) and the B facility did not neet the definition of en operable system (Installation of a non-seismically qualified wall jeopardized the operation of the B EBFS facility) .

Further information will be provided in the two week report.

Yours truly, NORIHEAST NUCLEAR DEIGY CQ4PANY a

E. J. Mroczka Station Superintendent Millstone Nuclear Power Station FJi/SKB:ejl cc: Director, Office of Managatent Information and Program Control, Washington, D.C. (3)

U.S. Nuclear Regulatory Camtission, c/o Document Managenent Branch, Washington, D.C. 20555 '-

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