ML19322E374

LER 80-008/01T-0:on 800308,irradiated Fuel Moved within Fuel Pool W/O Prior Satisfaction of Tech Spec Requirements.Caused by Procedural Inadequacy.Fuel Movement Prohibited & Secondary Containment Leak Rate Testing Initiated

ML19322E374
Person / Time
Site:	Pilgrim
Issue date:	03/20/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19322E373	List: ML19322E372 ML19322E374
References
LER-80-008-01T, LER-80-8-1T, NUDOCS 8003270327
Download: ML19322E374 (2)

Text

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60 61 DOCK ET NUMBER 68 69 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o 121 l On March 8, 1980 during the 0001-0800 hour shift. irradiated fuel was moved within l l the fuel pool. Prior to moving this fuel, routine evaluation of the availability l

.I o 131 1 l of required equipment was satisfactorily completed. Review of this decision de- I

,l o 14 I l termined that due to a procedural inadequacy, this decision was inaccurate. Plans y

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BOSTON EDISON COMPANY PILGRIM NUCLEAR POWER STATION DOCKET NO. 50-293 i

Attachment to LER Sd-008/01T ,

On March 8,1980 fuel was moved within the fuel pool without prior satisfaction of Technical Specification requirements.

A review of the plant's status revealed that:

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1. Secondary containment was not established and,

2. The automatic ' function of the diesel generators was impaired. -

Prior to moving fuel, the establishment of Secondary Containment must be ensured by the successful completion of Station Procedure Number 8.7.3.1 entitled

" Secondary Containment Leak Rate Test". This test was satisfactorily performed

'in prepa ation for de-fueling of the reactor vessel on January 5,1980 and is scheduled for repetition prior to refueling the vessel. However, this test is ,

also required prior to moving fuel within the confines of the fuel pool.

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The diesel generators, although functional, were configured so that operator i action would be required to switch the emergency, A5&A6, 4 KV bus loads. This j action was taken as a precaution to prevent the diesels from being switched onto a live, out of phase bus. Electrical work was being performed on the 345KV lines and the shutdown transformer was supplying the station load. This precaution would not prevent an automatic start of the diesel generator but would have prevented the diesel generator from automatically accepting the station load.

Corrective Action Immediately upon assessment of the situation, fuel movement was prohibited and the following actions were taken.

1. , Secondary containment leak rate testing was initiat.a This test was sat-isfactorily completed on March 20, 1980.

I 2. A revision to Station procedure number 4.3 entitled " Fuel Handlin~g" was initiated to provide detailed instruc'tions for operators for the moving i of fuel within the fuel pool. -

3. Station electrical loading was returned to normal. The diesel generator satisfactorily testel and declared operable.

4. Discussions were held with licensed personnel to apprise them of the situation and preclude its repetition. The operator training plan will in-clude review of this situation.

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