05000348/LER-1980-054-01, /01T-0:on 800919,investigation Revealed That During June 1979 Containment Equipment Access Hatch Bolts Had Been Overtorqued.Caused by Technical Manual Error. Technical Manual Specs Changed & Bolts,Nuts & Pins Replaced

/01T-0:on 800919,investigation Revealed That During June 1979 Containment Equipment Access Hatch Bolts Had Been Overtorqued.Caused by Technical Manual Error. Technical Manual Specs Changed & Bolts,Nuts & Pins Replaced

ML19351C967
Person / Time
Site:	Farley
Issue date:	10/03/1980
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19351C966	List: 05000348/LER-1980-054, Forwards LER 80-054/01T-0 05000348/LER-1980-054-01, /01T-0:on 800919,investigation Revealed That During June 1979 Containment Equipment Access Hatch Bolts Had Been Overtorqued.Caused by Technical Manual Error. Technical Manual Specs Changed & Bolts,Nuts & Pins Replaced
References
LER-80-054-01T, LER-80-54-1T, NUDOCS 8010080457
Download: ML19351C967 (2)

LER-1980-054, /01T-0:on 800919,investigation Revealed That During June 1979 Containment Equipment Access Hatch Bolts Had Been Overtorqued.Caused by Technical Manual Error. Technical Manual Specs Changed & Bolts,Nuts & Pins Replaced

Event date:
Report date:
3481980054R01 - NRC Website

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g lOn 9-19-80, an investigation revealed that during June 1979 the Unit 1 Containment

.t gEquipment Access Hatch bolts had b'een overtorqued as a result of an error in the vendors;

, 3 y technical manual 1.e. a 1992 to 2320 f t-lbs specification should have been 1992 to.2320 g o.,

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CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS 27 Q lThe bolt overtorquing resulted from a technical manual error. The following corrective g g jaction has'been accomplished: the unit was shutdown; the manual and associated maint.

gprocedure were revised; bolts, nuts and pins we.re replaced; the bolts were torqued to l

ltheir proper value and the hatch successfully passed a local leak rate test. Based on

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS capable of performing its design function under all design basis accidents while the bolts were overtorqued.

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