ML19250A369

Submits Revised Implementation Dates for Fire Protection Mods & Reasons for Delay

ML19250A369
Person / Time
Site:	Prairie Island
Issue date:	10/17/1979
From:	Mayer L NORTHERN STATES POWER CO.
To:	Office of Nuclear Reactor Regulation
References
TAC-11094, TAC-11095, NUDOCS 7910230337
Download: ML19250A369 (3)

Text

e NSF NORTHERN STATES POWER COMPANY M I N N E A PO LI S. M B N N E S OTA 55401 October 17, 1979 Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Prairie Island Nuclear Generating Plant Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Revised Schedule for Fire Protection Modifications The following information related to revised implementation dates for fire protection modifications is provided in accordance with paragraph 2.C.4 of the operating licenses for the Prairie Island Nuclear Generating Plant.

Paragraph 2.C.4 requires the completion of modifications identified in section 3.1 of the NRC's Fire Protection Safety Evaluation, dated September 6, 1979. If any modification cannot be completed on schedule, a report explaining the circumstances and proposing a revised schedule must be submitted for NRC Staff approval.

The following modifications cannot be completed as originally scheduled:

Item Modification Reason for Delay 3.1.2 Fire hose accessories, hose, All additional equipment has (1), (2), (4) booster hoses with variable been ordered, but ,ot all nozzles equipment is exp ed to arrive by December 31, 1979.

Also, it will be more efficient to replace unlined hose during the regularly scheduled January, 1980, hose station inspection.

3.1.4 Floor trench, ramp, curbs, These items cannot be completed (1) , (2) , (3), sprinkler system by December 31, 1979, because (4) , (10) , of other work assigned to the (11) plant technical staff which has a higher priority.

3.1.5 Fire retardant coating Painters will not be available (1), (2) for this work prior to October 31, 1979. An approved coating for foam insulation j} }@9 still has not been selected. 791023033 7 [ ./

NORTHERN STATES POWER COMPANY Offisa of Nuclear Reactor Regulation Oc. t - 17, 1979 Page Item Modification Reison for Delay 3.1.6 Gas cylinder relocation The diamethylamine cylinder (1) has been removed. Repiping the propane cylinders is a major design change which cannot be completed by October 31, 1979. 3.1.10 Foam application equipment Equipment has been ordered, (1) but it is not expected to arrive prior to October 31, 1979. 3.1.11 Centralized storage locker The water-proof tarpaulins (1) have been received along with many of the other items ordered for the fire brigade. Equipping of the central locker has been postponed however until all material is received and the locker can be properly sized and provided with storage locations. 3.1.16 Detector location markings This work will not be completed (1) prior to December 31, 1979, because of the large number of markings required (there are about 800 fire detectors at Prairie Island). 3.1.19 Fire door inspection A formal surveillance procedure (1) has not yet bec1 issued for this inspection. A review of all plant doors must be completed to determine which doors are affected (many doors are now automaticilly supervised as a result of security system improvements). 3.1.20 Hydrsnt hose valves The required fittings have been (1) ordered, but not yet received. 1203 090

e NORTHERN STATES POWER COMPANY Office of Nuclear Reactor Regulation October 17, 1979 Page 3 The following revised schedule is proposed for the modifications discussed above: Item _ Date 3.1.2 March 31, 1980 3.1.4 August 31, 1980 3.1.5 March 31, 1980 3.1.6 June 30, 1980 3.1.10 March 31, 1980 3.1.11 March 31, 1980 3.1.16 June 30, 1980 3.1.19 January 31, 1980 3.1.20 March 31,1980 We will attempt to complete the other fire protection modifications and analyses by the dates specified in Tables 3.1 and 3.2. However, our technical staff, operations, maintenance, clerical, and craft personnel have been under an enormous work load for the past several months. This situation can be expected to continue indefinitely due to work mandated by the Commission Staff's Three Mile Island review groups, new issues raised by the Division of Operating Reactors, the Fire Protection Safety Evaluation Report, and an unprecedented number of I6E Bulletius. It will be necessary to assign priorities to these tasks so that we utilize our manpower and other resources to rapidly complete those tasks having direct safety significance. Please contact us if you require additional information related to our revised schedule. L. O. Mayer, P.E. Manager of Nuclear Support Services LOM/DMM/amh cc: J. G. Keppler G. Charnoff 1203 091}}