ML19210D270

LER 79-033/03L-0:on 791025,HPCI Injection Valve F006 Could Not Be Operated from Rtgb.Caused by Misplaced Drive Gear Key Due to Missing Lockwire in Drive Gear.Operator Reassembled Correctly & Tested.Cause for Missing Lockwire Unknown

ML19210D270
Person / Time
Site:	Brunswick
Issue date:	11/19/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19210D267	List: ML19210D266 ML19210D270
References
LER-79-088-03L, LER-79-88-3L, NUDOCS 7911260216
Download: ML19210D270 (2)

Text

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bd 69 EVENT DATE 14 75 REPORT DATE F 8 60 61 DOCK ET NUMS E R EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h El While performing PT 9.2, HPCI System Component Test, the control operator noticed l o 3 l that the HPCI injection valve F006 could not be operated from the RTGB.

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l33B l@l34Z l@ 25 26 31 40 48 42 43 44 47 cAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o An investigation of the valve operator determined that lockwire was missing from l i i l the drive gear with resultant loosening of the set screw which allowed the drive i g* gear key to come out of its keyway. The operator was reassembled correctly and l gl tested. No reason could be determined for the missing lockwire. (Cont'd) l L'_L*.J l 80 7 8 9 STA S  % POWER oTHER STATUS blS o RY DISCOVERY DESCRIPTION h i s J@ l0 5 l 0i l@lM N/Al l4 B l@[ Periodic Test 80 l

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LER CONTINUATION - RO# l-79-88 Facility: BSEP Unit No. 1 Event Date: 10-25-79 There is no record of previous corrective maintenance on this operator. The maintenance instruction cove. ring reassembly of the subject components was recently cevised proviuing detailed instructions on reassembly. This is con-sidered an isolated event.

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