ML18078A591

LER 78-079/03L-0 on 781201:steam Generator 12,level Channel III Found to Be Inoperable;Channel Bistables Tripped Per Tech Specs.Caused by Partially Clogged Sensing Lines

ML18078A591
Person / Time
Site:	Salem
Issue date:	12/28/1978
From:	KAPPLE A W Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18078A589	List: ML18078A588 ML18078A591
References
LER-78-079-03L, LER-78-79-3L, NUDOCS 7901030173
Download: ML18078A591 (1)

Text

U.S. NUCLEAR REGULATURY COMMISSION e LICENSEE EVENT REPORT e CONTROL BLOCK: !o-1 __ . .._I _.__....____._....__..j

0) 1 " (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI

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• LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 58 CON'T CITTI 7 8 LlJ© I o I s I o I a I a I 2 I 1 I 2 !GI 1 I 2 I o I i I 1 I a I© I 1 I 2 I 2 I s . I 1 I s 1 G) 60 . 61 DOCKET NUMBER 6a 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES

@ . . !During normal operation, No. 12 S/G level Channel III was found to be inoperable.

!]]]] !Performance Department was notified and the channel bistables were tripped as !]]]] 1required by T/S 3.3.1.1, Action 7. The channel was repaired and returned to service 09 [[]]] 112-6-78 and the Action Statement was terminated.

Two other 12 S/G level channel [§]]] !redundancy was available throughout this occurrence.

This is the first occurrence of !]]:I] !this type. -[]]]] 7 B 9 [ill] 7 B SYSTEM cooE I IIA I@ 9 10 /;:;\ l.ER!RQ LVENTYEAR REPORT I 7 I 8 I NUMBER 21 22. CAUSE CAUSE COMP. CODE suBCODE COMPONENT cooE suBCODE I.LI w@ 1r1N 1s1TIRIU1e 11 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REPORT NO. COOE TYPE I I Io I 7 I 9 I I /I I o I 3 I L1J 23 24 26 27 28 29 30 VALVE SUBCOOE 20 l.=l 31 PRIME COMP. REVISION NO. Lo.J 32 COMPONENT so oW$CJ.JT HOURS c22'i W@W@ 12J@) I 01 o I ojO I L:.J@ L::J@ ACTION FUTURE TAKEN ACTION SUPPLIER MANUFACTURER 33 34 JS 36 37 40 41 42 I Bl 0 I 8 I 0 I@ CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @ 43 44 47 [I]]] I The level sensor failure was caused by partially clogged sensing lines. The sensing lines were blown down, the transmitter was recalibrated and the channel was returned to service. The other S/G level sensing lines were blown down to prevent reoccurrenc9

[JJ]J I of this problem. IJJII 1 a s FACILITY l3c)\ STATUS % POWER OTHER STATUS v::::J IIITJ I O I 9 I 4 l@I .... __ N-...l ...... A;;..... _ __... 1

• a s 10 12 11 ACTIVITY CONTENT REl.EASEO OF REl.EASE AMOUNT OF ACTIVITY IJJI] lli.J @ LI.J@) I N /A 1 a s 10 11 so METHOD OF DISCOVERY DESCRIPTION

@ OISCOVERY I l.!J@I 0Eerational Check 44 45 46 BO LOCATION OF REI.EASE @ NiA ** 44 45 80 PERSONNEL EXPOSURES NUMBER (.;;\TYPE DESCRIPTION

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--..1 1 a s 11 12 13 PERSONNEL INJURIES f,;'<l 80 NUMBER IIli] I olol ol@)._, _______ .

1 0 s 11 12 80 LOSS OF OR DAMAGE TO FACILITY 1.i3' TYPE OESCRIPTION

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__ 790l030113 PHONE: (609)365-7000 Salen Ext. 628