05000260/LER-1980-008-31, /03L-0:on 800206,while Conducting Automatic Depressurization Sys Logic Functional Test,Relay 10A-K26 Manually Operated in Place of Relay 2E-K26 Causing Recirculation Pump 2B Trip.Caused by Operator Error

/03L-0:on 800206,while Conducting Automatic Depressurization Sys Logic Functional Test,Relay 10A-K26 Manually Operated in Place of Relay 2E-K26 Causing Recirculation Pump 2B Trip.Caused by Operator Error

ML18024B399
Person / Time
Site:	Browns Ferry
Issue date:	03/06/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B395	List: 05000260/LER-1980-008, Forwards LER 80-008/03L-0 05000260/LER-1980-008-31, /03L-0:on 800206,while Conducting Automatic Depressurization Sys Logic Functional Test,Relay 10A-K26 Manually Operated in Place of Relay 2E-K26 Causing Recirculation Pump 2B Trip.Caused by Operator Error
References
LER-80-008-031, LER-80-8-31, NUDOCS 8003110719
Download: ML18024B399 (6)

LER-1980-008, /03L-0:on 800206,while Conducting Automatic Depressurization Sys Logic Functional Test,Relay 10A-K26 Manually Operated in Place of Relay 2E-K26 Causing Recirculation Pump 2B Trip.Caused by Operator Error

Event date:
Report date:
2601980008R31 - NRC Website

text

U. S. N CLEAR REGIJL,ATORY COMMISSION Qa~ 00 LICENSE TYPE 30 57 CELT 58 NRC FOAQ 3GG Il 27I. ~

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~0QB DOCKET NUMBER GB GJ EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO During normal power operation while conducting SI 4.2.B.44 (ADS Logic Fun ctiona 1 Test ) ~ relay 10A-K26 was erroneous ly manua 1ly operated rather than the intended relay 2E-K26, resulting in recirculation pump 2B tripping and recirculation pump, 2A & 2B discharge valves closing.

Recirculation to the health or safety of the public.

There were no redundant systems.

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9 80 SYSTEM

CAUSE

CAUSE COMP VALVE CODE CODE SUGCODE COMPONENT CODE SUBCODE SUGCODE o

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CODE TYPE NO.

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0 21 22 23 24 2G 77 28 29 30 31 ACI'ION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDuI PRIME COLIP.

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33 34 35 36 37 40 41 47 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

The recirculation pumps were tripped due to personnel error caused by poor communication while conducting SI testing.

The error has been discussed with personne involved.

Further corrective action is being investigated.

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F AC I LITY STATUS WIOWER B

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Tennessee Valley Authority Browns Ferry Nuclear Plant FOWl 3F"1V BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION BFRO 260 / 808 Technical Specification Involved 6.7.2.b (2)

Reported Under Technical Specxfxcatcon Date of Occurrence Time of Occurrence 0420 3.6.F.5 Unit

~

Identification and Descri tion'of Occurrence:

2A and 2B recirculation pumps were tripped.

Conditions Prior to Occurrence:

U-1 8 0, refueling outage.

U-2 8 98%, normal operations conducting SI 4.2.B44 U-'3 8 100%, normal operations Action specified in the Technical Specification Surveillance Requirements met due to ino erable e ui ment.

Describe.

Steady state power operations without recirculation pumps permitted for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> (T.S. 3.6.F.5).

SI 4.2.B.44 was terminated and the-plant was returned to normal operation.

A arent Cause of Occurrence:

Relay 10A-K26 was erroneously manually operated, rather than the intended. relay 2E-K26, resulting in recirculation pump 2B tripping and recirculation pumps 2A and 2B discharge valves closing."

Recirculation pump 2A was tripped by the operator.

Anal sis of Occurrence:

There was no hazard to the public health or safety.

Corrective Action

The, error was discussed with personnel involved; --'Thie'rpr'imary'cause,-of 'the error was a, lack.og:communications breakdown.

Future recurrence control actions being investigated".

Failure Data:

260/806>

259/7934$

259/7926

• Retention:

eriod - Lifetime; Responsibility - Administrative Supervisor

~Revision:

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i REGUL'ATORY I, RMATION DISTRIBUTION SYST M (RIDS)

ACCESSION NBR: 8003110719 DOC ~ DATEt 80/03/06 NOTARIZED!

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FACIL!50<<260 Browns Ferry Nuclear Power Stationi Uni t 2i Tennessee 0

26 AUTH'AME AUTHOR AFFILIATION Tennessee Valley Authority REC IP, NAME RECIPIENT AFFILIATION Region 2i At 1 antsy Of f ice of the Di r actor

SUBJECT:

LER 80~008/03L; 0:on 800206iwhile,conducting automatic depressurization sys logic functional testirelay 10A K26 manually operated in place of relay 2E K26 causing recirculation pump 2B trip, Caused by operator errors DISTRIBUTION CODE; A002S'OPIES RECEI VED: L>>TR J.>>

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