05000255/LER-1979-014-03, /03L-0 on 790315:during Normal Plant Operation, Primary Computer Stopped,Due to Computer Program Failure. Computer Reprogrammed & Restored to Operability

/03L-0 on 790315:during Normal Plant Operation, Primary Computer Stopped,Due to Computer Program Failure. Computer Reprogrammed & Restored to Operability

ML18043A621
Person / Time
Site:	Palisades
Issue date:	04/12/1979
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18043A620	List: 05000255/LER-1979-014, Forwards LER 79-014/03L-0 05000255/LER-1979-014-03, /03L-0 on 790315:during Normal Plant Operation, Primary Computer Stopped,Due to Computer Program Failure. Computer Reprogrammed & Restored to Operability
References
LER-79-014-03L, LER-79-14-3L, NUDOCS 7904180281
Download: ML18043A621 (2)

LER-1979-014, /03L-0 on 790315:during Normal Plant Operation, Primary Computer Stopped,Due to Computer Program Failure. Computer Reprogrammed & Restored to Operability

Event date:
Report date:
2551979014R03 - NRC Website

text

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.I NRC FORM366 11-ni U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: I 10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

[2J2J I Ml r I PI A I LI l 101 o Io I o I b Io 10 Io I o I o Io 1° 101 4 11 I 1 I i Ii 101 I 10 7

8 9

LICENSEE CODE 14

~5 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T

~

7 8

~~~~! L1.J©lo I 5 IO 10 I 01 21 51 510)1 01 311I517191©1Ol4111 9 71 91@

60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

@ITI I During normal plant operation, the primary computer stopped.

The

[§JI) I computer was returned to an operable status within two hours.

This [ill]

[Q]IJ

())TI C£:TI]

[§))]

condition represents a degraded mode permitted by TS 3.lle.

No threat to public health or safety existed.

Event simil~r to LER 79-007.

7 s 9 [ill]

7 8

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCOOE COMPONENT CODE SUBCODE SUBCOOE Ir IF I@ 1.!J@ 1.LJ@ I IIN I SI Tl R !U I@ ~@) ~@

9 10 11 12 13 18 19 20

~

LER/RO CVENTYEAR

~

REPORT I 7 19 I NUM!!ER 21 22 SEQUENTIAL OCCURRENCE REPORT REVISION*

ROEPORT ~O.

CODE TYPE NO.

l.=J I 1i 14 I

~ I 013 I 11..J l=:J LI 23 24 26 27 28 29 30 31 32 80 ACTION FUTURE EFFECT SHUTDOWN

~

ATTACHMENT NPRD-4 PRIME COMP, COMPONENT TAKEN ACTION ON PLANT METHOD HOURS 22 SUBMITTED FOAM :;UB.

SUPPLIER MANUFAC)'UREJ3.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORREC'rlVE ACTIONS @

IIJ.]J I Tbis occurrence has been attributed to a failure of the computer prog:ram.

The computer was reprogrammed to restore operability.

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7 8

9 FACILITY

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STATUS

% POWER OTHER STATUS i.:::::;*

!ITIJ l.El@ l 1 I o I o I@.... ! __

NA........_ ___ ___,

7 8

9 10 12 13 ACTIVITY CONTENT

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RELEASED OF RELEASE AMOUNT OF ACTIVITY ~

ITII] L.zl@) ~@

.... I _N...... A ______

7 8

9 10 11 eo METHOD OF

~

DISCOVERY DISCOVERY DESCRIPTION ~

~@)~I __

NA~-------------~

45.

46 44 80 NA LOCATION OF RELEASE @

44 45 80 PERSONNEL EXPOSURES

~

NUMBER

~TYPE r:;;:;.. DESCRIPTION CiIZJ I 0101 01'81~~~-N_A ______ --,.... ___________________ ---.J 7

8 9

11 12 13 PERSONNEL INJURIES C...,

NUMBER DESCRIPTION6 EE I OJ 0 10 l@...,,......N_A ________________________

---J 7

8 9

11 12 LOSS OF OR DAMAGE TO FACILITY G [QI] LI@ DE~llPTION.

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8 9

~,o~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-J 8

o 80 I 9 oY / C(o;i~J 80 PUBLICITY Q\\

ISSUED{,;\\ DESCRIPTION NRC USE ONLY IT:TIJ L...:zj~.._..~....._ __________________________ -' I I I I I I I I I I I I 7

8 9

10 68 69 80

• consumers Power company General Offices: Z12 V'Jest Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 April 12, 1979 Mr James G Keppler Office of Inspection and Enforcement Region III U S Nuclear Regulatory Commission

'799 Roosevelt Road Glen Ellyn, IL 6013'7 IDCKET 50-255 -

LICENSE DPR P.A.LISADES PLANT -

LICENSEE EVENT REPORT '79-014 On the reverse side is LER '79-014 which is reportable under Technical Specifi-cation 6.9.2.b.2.

}JC1<-L!.of p ~iA't1Cl.'1~l David P Hoffman Assistant Nuclear Licensing Administrator CC:

Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement

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.?R 1 6 1979