ML17261A107

LER 79-005/03L-0 on 790206:containment Recirculation Sump Failed to Reopen After Hydro Testing.Caused by Flexibility of Long Extension Rod Between Limitorque SMB-00 Operator & Valve.Valve Stroked Monthly & Timed Quarterly

ML17261A107
Person / Time
Site:	Ginna
Issue date:	03/06/1979
From:	Spector S ROCHESTER GAS & ELECTRIC CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17244A394	List: ML17244A393 ML17261A107
References
LER-79-005-03L, LER-79-5-3L, NUDOCS 7903120294
Download: ML17261A107 (2)

Text

U.S.NUCLEAR REGULATORY COMMISSION NRC a~lRM 366 tu-'r7)-15 79-005/03L-0 LICENSEE EVENT REPORT I (CAR 1209)~O 7 8 CON'T~OT 7 8 Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6 0 0 0 0 0-0 OQ24 1 1 1 1QE~QE LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CONTROL BLOCK: 1 NYREG1Q200 9 LICENSEE CODE 14 15~LQB 0 5 0 0 0 2 4 4 Q7 0 2 0 6 7 9 Qs 0 3 0 6 7 9 QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES IO After RHR system hydro test containment recirc sump outlet MOV 851B failed'to re-open (T.S.5.9.2.b2)Its redundant counterpart had been successfully cycled and returned to the normal open position.As discussed in Cause Description, MOV 851B was~OS closed for the test only and operated properly on the second attempt.This was moni-tored by maintenance personnel after they had examined conditions and found no apparent reason for failure.~OS 7 8 9 80~OB 7 8 SYSTEM CAUSE CAUSE COMP.VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE~>>QTT E Q" L~JO>>V A I.V 0 F Q14~AQ75~ZQ75 9 10 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LEAIAO EVENT YEAR REPORT NO.CODE TYPE NO.Q17 REPQRT~79+~00 5+~~03+L 0 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPAD.4 PRIME COMP.COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.SUPPLIER MANUFACTURER

~ZQPR~ZQPR~ZQEO~ZQ>>0 0 0 0~NQ22~NQ24~NQ25 L 2 0 0 Qss 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 Flexibility of long extension rod between Limitorque SMB-00 operator and valve possibly allowed valve to close tighter than required.First attempted opening stopped on overtorque but relieved overtorque condition permitting proper opening on second further problems.80 7 8 9 FACILITY STATUS'¹POWER OTHER STATUS Q E 0 8 8 NA METHOD OF DISCOVEAY DISCOVERY DESCRIPTION Q32~BQ31 Performing RHR Hydro 44 45 46 5 Q25~Q25 7 8 9 10 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY Q~6~Z Q33 Z Q34 NA 7 8 9 10 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q30~OO O Q27~ZQRR NA 7 8 9 11 12 13 PERSONNEL INJURIES 7 8 9 11 12 LOSS OF OR DAMAGE TO FACILITY Q43 TYPE DESCRIPTION 5~ZQ42 NA 7 8 9 10 PUBI.ICITY 7 8 9 10 80 LOCATION OF RELEASE Q36 NA 80 45 44 80 80 80 NRC USE ONLY>908 1800-'I'68 69 80 45 PHDNE 7 1 6 54 6-2 700, ext~2 9 1-2 1 5 S.Spector NAME OF PREPARER 3 attempt~.Va lve wi 1 1 continu e to be stroked monthly and timed quarterly to identify any