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

NRC a~lRM 366 U. S. NUCLEAR REGULATORY COMMISSION tu-'r7) -15 79-005/03L-0 LICENSEE EVENT REPORT I (CAR 1209)

CONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

~O 7 8 9 NYREG1Q200 LICENSEE CODE 14 15 0 0 0 0 LICENSE NUMBER 0 0 OQ24 25 26 1 1 LICENSE TYPE 1 1QE~QE 30 57 CAT 58 CON'T

~OT ~LQB 0 5 0 0 0 2 4 4 Q7 0 2 0 6 7 9 Qs 0 3 0 6 7 9 QB 7 8 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 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~OB ~>>QTT 10 E Q" L~JO>> V A I. V 0 F Q14 ~AQ75 ~ZQ75 7 8 9 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION Q17 LEAIAO REPQRT ACTION FUTURE EVENT YEAR

~79 21 22 EFFECT

+23 SHUTDOWN

~00 24 REPORT NO.

5 26

+~

27

~03 28 ATTACHMENT CODE 29 NPAD.4 TYPE

+L 30 PRIME COMP.

31 NO.

32 0

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 attempt possibly allowed valve to close tighter than required. First attempted opening stopped on overtorque but relieved overtorque condition permitting proper opening on second 3

. Va lve wi1 1 continu e to be stroked monthly and timed quarterly to identify any further problems.

7 8 9 80 FACILITY

'¹ POWER Q METHOD OF 7

5 8

STATUS 9

E Q25 ~Q25 10 0 8 8 12 13 OTHER STATUS NA 44 DISCOVEAY

~BQ31 45 46 Performing RHR Hydro DISCOVERY DESCRIPTION Q32 80 ACTIVITY CONTENT

~6 RELEASED OF RELEASE

~Z Q33 Z AMOUNT OF ACTIVITY NA Q NA LOCATION OF RELEASE Q36 Q34 7 8 9 10 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q30

~OO O Q27 ~ZQRR NA 7 8 9 11 12 13 80 PERSONNEL INJURIES 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 5 ~ZQ42 NA 7 8 9 10 80 PUBI.ICITY

> 908 1800-'I' NRC USE ONLY 7 8 9 10 68 69 80 45 NAME OF PREPARER S. Spector PHDNE 7 1 6 54 6-2 700, ext ~ 2 9 1 -2 1 5