ML17317B171

LER 79-010/03X-1 on 790223:diesel Essential Svc Water Check Valves 1-ESW-111 & 1-ESW-114 Not Functioning Properly.Caused by Excessive Wear at Split Disc Hinge Points.Discs Replaced

ML17317B171
Person / Time
Site:	Cook
Issue date:	05/07/1979
From:	Michael Brown INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B170	List: ML17317B169 ML17317B171
References
LER-79-010-03X, LER-79-10-3X, NUDOCS 7905110124
Download: ML17317B171 (1)

Text

NRC FORI',1 366 715.S.NUCLEAR REGULATORY COMMISSION (7-77)

PDATE R'EPORT PRFVIOUS REPORT DATE 03 20 lCENSEE EVENT REPORT CONTROL BLOCK: 01 {PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

P I 6

~01 7 8 M I D C LICENSEE CODE C I 14 QE 15 0 0 0 0 0 0 0 0 0 25 Q34 26 I ) I I LICENSE TYPE 30 Q4~08 57 CAT 58 CON'T

~01 ,REPRRTE~LQE o s o o o I I s Q70 z z s I 0

/4 080 75 REPORT DATE 80 QB 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

~o DURING SURVEILLANCE TESTING, DIESEL ESSENTIAL SERVICE WATER CHECK VALVES 1-ESW-111 AND 1-ESW-114 DID NOT FUNCTION PROPERLY. REPAIRS TO THESE

~os VALVES RENDEREDTHE CORRESPONDING EMERGENCY DIESEL INOPERABLE. TECH.

~04 3.8. 1. LIMITING CONDITIONS FOR OPERATION. WERE SATISFIED AS THE

~os SPEC. 1 COMPANION DIESEL REMAINED OPERABLE. THE PUBLIC HEALTH AND SAFETY WERE

~08

~07 NOT JEOPARDIZED..PREVIOUS EVENT 79-006/03L-Op DOCKET 0500316.

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

[oO~] ~WA Q>> B 073 ~AQ13 V A L V E X 18 Q14 ~CQ16 19

~A 20 Qls 7 8 9 10 11 12 13 SEQUENTIAL OCCURRENCE REPORT REVISION Q17 LER/RD REPORT EVENT YEAR

~79 2I 22

+

23

~01 24 REPORT NO.

0 26 QX 27

~OS 28 ATTACHMENT CODE 29 NPRDQ TYPE

~X 30 PRIME COMP.

31 NO.

32 COMPONENT

~

ACTION FUTURE EFFECT SHUTDOWN TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

~BQIB ~019 ~020 ~Z021 0 0 0 2 ~N 023 ~024 026 026 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 027 o CAUSE OF FAILURE WAS EXCESSIVE WEAR AT SPLIT DISC HINGE POINTS. THE CAST STEEL

~17 DISCS ON THESE AND TWO ADDITICNAL VALVES IDENTICAL TO THE VALVES WHICH FAILED WERE REPLACED WITH STAINLESS STEEL DISCS FOR BETTER WEAR CHARACTERISTICS ~

'REVENTIVE MAINTENANCE WAS 17'REVISED TO INCLUDE INSPECTING ESW CHECK VALVE DISCS DURING 18 MONTH DIESEL ENGINE OVERHAUL.

80 7 8 9 FACILITY STATUS  % POWER OTHER STATUS Q

~30 METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32 CO 8 E QEE ~10 0 QER N/A 44

~8037 45 46 SURVEILLANCE TESTING 80 8 9 10 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITYQ3 N/A LOCATION OF RELEASE Q

~Z Q33 ~Z034 N/A 8 9 10 44 45 80 7 11 PERSONNEL EXPOSURES NUMIIER TYPE DESCRIPTION Q39 7 ~00 0 Q37 Z Q38 13 N/A 80 7 8 9 11 12 PERSONNEL INJURIES 8 ~00 NUMBER 0 Q40 DESCRIPTION Q N/A 80

/OS If O(kg 7 8 9 11 12" LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION 43 P

~8 8

~Z043 9 10 N/A 80 PUBLICITY NRC USF. ONLY o

ISSUED

~NI 04 DESCRIPTION Q N/A 68 69 80 ~ 48 8 9 10 M.S. BROWN PHDNE (6 1 6) 465 590 1 F EXT 398 NAME OF PREPARER