05000260/LER-1980-001-03, /03L-0:on 791229,during Normal Operation,While Performing SI 4.2.B-1,switch 1 on Reactor Water Level LITS-3-58D Failed to Operate.Caused by Rendom Failure of Switch in Yarway Model 4418CE.Switch Replaced

/03L-0:on 791229,during Normal Operation,While Performing SI 4.2.B-1,switch 1 on Reactor Water Level LITS-3-58D Failed to Operate.Caused by Rendom Failure of Switch in Yarway Model 4418CE.Switch Replaced

ML18024B288
Person / Time
Site:	Browns Ferry
Issue date:	01/25/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B287	List: 05000260/LER-1980-001, Forwards LER 80-001/03L-0 05000260/LER-1980-001-03, /03L-0:on 791229,during Normal Operation,While Performing SI 4.2.B-1,switch 1 on Reactor Water Level LITS-3-58D Failed to Operate.Caused by Rendom Failure of Switch in Yarway Model 4418CE.Switch Replaced
References
LER-80-001-03L, LER-80-1-3L, NUDOCS 8001290571
Download: ML18024B288 (4)

LER-1980-001, /03L-0:on 791229,during Normal Operation,While Performing SI 4.2.B-1,switch 1 on Reactor Water Level LITS-3-58D Failed to Operate.Caused by Rendom Failure of Switch in Yarway Model 4418CE.Switch Replaced

Event date:
Report date:
2601980001R03 - NRC Website

text

NRC FOIIPI 366 IT 77I Ll C EN SEE EVENT REPORT V, <<B, I'SU Sl Sll VVI Ps

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Ql (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATIONI I

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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74

. 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO

~02 During normal operation while erformin SI 4. 2. B-l switch number o

L

~03 Reactor Water Level, failed to operate (T. S.

Tab le 3. 2. B).

A redundant switch was 4

operable.

There was no hazard to the pub lic health or safet Previous event:

296 o

5 7724

~06

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8 9

7 8

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENTCODE SVBCODE SUBCODE

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N S

T R

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT R EVI8 ION LER77RO EVENT YEAR REPORT NQ, CODE TYPE hIO.

Q77 REP0RT ~0

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~0 21 22 23 24 26 27 28 29 30 31 ACTION FUTURE EFFECT SHUTDOWN ATTACHMEI4T NPRD<<1 PRIME COMP, CohIPONE'NT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORMSUB.

SUPPLIER MANUFACTURER QIS ~ZQIB

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0 0 33 34 35 36 37 40 42 43 44 47 CAUSE DESCRIPTION ANDCORRECTIVE ACTIONS Q27 o

One switch in a Yarwa Model 4418CE failed to o crate.

The switch was re laced and tested satisfactorily.

The failure of the switch is considered random and no further action is planned.

All Yarway switches are functionally tested monthly by surveill-ance testing.

4 7

8 9

FACILITY STATUS

'fi POWER OTHER STATUS Q 0

6 0

NA

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8 9

10 12 17 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQA 6

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~ZQ34 NA 7

8 9

10 11 44 PERSONNEL EXPOSURES NUMBFR TYPE DESCRIPTION Q39 7 ~00 0 JQ37 Z

Qss NA 7

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I I 12 13 PERSONNEL INJURIES NUAIBER OESCRIPTIONQ41

~00 0

Qio NA 45 NA METHOD OF DISCOVERY

~BQ31 SI testing 45 DISCOVERY DESCRIPTION Q32 LOCATIONOF RELEASE Q 80 80 80 7

8 n

9 'l 12 lOSS OF OR DAAIAGETO FACILITYQ43 TYPE

DESCRIPTION

L~JQ42 NA 9

10 PUBLICITY ISSUED OESCRIPTIQN~

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10 NAiVE OF PREPARER 68 69 PHONE 80 80 NRC USE ONLY 80 IR 0

IL sS 800>89o:

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'I'(:nn< sse Pall<. v Auth<a'itv Ik t'()K'1'n: Irrv 44 ut'<<'sr Vial fit I.I'.ll SU I'Pl.l:.Ml'.Nl'AI. INFO IIMATION o

F-orm BF-17='F

15. 2 I/10/79 I)f'it(>-."90-260 // gpl

'I'c< hni(.al Spc( ificati Involve<]

R(:port((I Jn(l<<r 'I'echniral Sp( f'ification 6.7.2.b.2 Deto of Or.< err<.>ro 12/29/29 Time of Qrcurrenee 24OO

'nit Id( ntification;in(I I >< ~(:r II<tion <>f Occurrence:

While performing SI 4.2.B-1, switch number 1 on LITS-3-58-D failed to operate switch 1 add 2 close to initiate CSS LPCI9 and an accident signal.

C(tn(I!<ions P> ior to 0< currence:

U-1 at 100K.

U-2 at 60X.

U-3 at 80%.

Acti<>n.",Ii<<cifie> th<< 'I'((hnical Sp(cification Surveillance Requirements met due to i>>o~<<rabl<'

~<quid>ment.

l)<.s<!r'it)e.

Repair within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or declare the system inoperable.

Ap~iar(;nt (:ause of (occur('en(:e:

Switch failed.

Analv: is of Occur r(nce:

There was no damage to plant equipment.

There was no activity releas'e, no personnel exposure or in)ury and no danger to health or safety of the public.

(:(<rt cot iv(. Act,i<in:

Replaced switch.

I'ailur( l)ata; 296/7724

"I<< t. nt ion:

P<.r i(>(l - l,if<<1im(', 1<espon: ibility - Administrative Supervisor

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