ML17261A122

LER 79-008/03L-0 on 790406:boric Acid Flow Control Valve Leak Noted on Valve Outlet One Inch Nipple.Caused by Internal Weld Flow Through Defects & Deep External Pitting. Nipple Replaced w/40 Nipple

ML17261A122
Person / Time
Site:	Ginna
Issue date:	05/07/1979
From:	Spector S ROCHESTER GAS & ELECTRIC CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17244A515	List: ML17244A514 ML17261A122
References
LER-79-008-03L, LER-79-8-3L, NUDOCS 7905110104
Download: ML17261A122 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (re) 79-008/03L-0 LICENSEE EVENT REPORT (CAR 1719)

CONTROL BLOCK: Q7 {PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 0000000Q341111Q~QR 1 6

~01 7 8 9 NY RE LICENSEE CODE G1Q200 14 15 LICENSE NUMBER 26 LICENSE TYPE 30 57 CAT 58 CON'T

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7 8

,oomoo, ~LR 60 61 0 5 0 0 0 2 4 4 68 1

69 0 4 0 EVENT DATE 6 7 9 74 Qs 75 0 5 0 REPORT DATE 7

80 Qo DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During maintenance on boric acid flow control valve leak was noted on valve outlet 1" nipple. (T.S. 6. 9. 2.b. (4)) Two flow paths from boric acid tanks to RCS were verified.

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~08 7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE 7 8

~PC 9 10 Q11 E Q13 ~CQT3 12 13 P I P 9 X X Q4 ~AQTE ~Z 20 Q'3 11 18 19 SEQUENTIAL OCCURRENCE REPORT REVISION Q11 LESBO REPoRT ACTION FUTURE EVENT YEAR

~79 21 22 EFFECT

~

23 SHUTDOWN

~00 24 REPORT NO.

9 26

~W 27

~03 28 ATI'ACHMENT CODE 29 NPRDA TYPE

~L 30

~

PRIME COMP.

31

~0 NO.

32 COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

~Q~CGR 33 34

~zQER 35

~zQ 36 37 o o o o 40

~NQ33 41

~NQ34 42 43 N QEE 44 47 QER CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 Internal weld flowthrough defects and deep external pitting. The I" nipple is 3-'" long sch 10 stainless. It is heat traced, and normal operating pressure is 100 psi . The nipple was replaced with a sch 40 nipple. Later maintenance In this section of piping resulted in replacement of the nipples, check valve and coupling from flow control valve to the coupling.

7 8 9 80 FACILITY STATUS SIPOWER OTHER STATUS Q METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

~TE 8

~QER 9

E ~QER 10 0 9 2 12 13 NA 44

~AQ31 45 46 Noticed during maintenance on adjacent valve 80 ACTIVITY CONTENT 6

RELEASED OF RELEASE

~Z AMOUNTOF ACTIVITY NA Q LOCATION OF RELEASE NA.

Q Q33 ~ZQ34 7 8 9 10 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 1 ~00 0 8L~J8 NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION Q41 3 ~OO 0 Q4o NA 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 9 Z Q42 NA 8

7 9 ISSUED 10 PUBLICITY DESCRIPTION ~ 905 > 10 yo NRC USE ONLY 80 KZ uNQ 7 8 9 10 68 69 80 g NAME OF PREPARER S. Spector 716/546-2700,ext.291-215

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