05000259/LER-1980-023-03, /03L-0:on 800312,during Refueling Outage,Relay 23A-K42 Found Wired Incorrectly,Eliminating HPCI Reactor High Water Level Trip.Cause Undetermined

/03L-0:on 800312,during Refueling Outage,Relay 23A-K42 Found Wired Incorrectly,Eliminating HPCI Reactor High Water Level Trip.Cause Undetermined

ML19305D835
Person / Time
Site:	Browns Ferry
Issue date:	04/08/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19305D829	List: 05000259/LER-1980-023, Forwards LER 80-023/03L-0 05000259/LER-1980-023-03, /03L-0:on 800312,during Refueling Outage,Relay 23A-K42 Found Wired Incorrectly,Eliminating HPCI Reactor High Water Level Trip.Cause Undetermined
References
LER-80-023-03L, LER-80-23-3L, NUDOCS 8004150585
Download: ML19305D835 (2)

LER-1980-023, /03L-0:on 800312,during Refueling Outage,Relay 23A-K42 Found Wired Incorrectly,Eliminating HPCI Reactor High Water Level Trip.Cause Undetermined

Event date:
Report date:
2591980023R03 - NRC Website

text

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8 60 SI OccitET huweER 68 09 EVENT D ATE 34 7S REPORT OATE 83 EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h o 2 l During refueling outage while performing SI 4.5.E.2 d&e relay 23A-K42 was found, I

o 3 g wired incorrectly. This eliminated the HPCI reactor high water level trip.

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47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l3lO; l Relay 23A K42 was wired incorrectly causing the relay to be inoperable. The l

lTTT1 l relay was rewired and verified correct and operable. Cause of wirine error can not be determined. Unit 2 and 3 were verified correct. No reoccurrence l

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,+.'y Tennessee Valley Authority Fonn BF-17 Browns Ferry Nuclear Plant BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION BFRO-50 259 f 8023

3. 5. E.1 Technical Specification Involved 6.7.2.b.2 Reported Under Technical Specification Date of Occurrence 3/12/80 1625 I

Time of Occurrence Unit Identification and Description of Occurrence:

HPCI reactor high water level trip was inoperable due to wiring error on relay l

23AK42. This was found during the performance of S.I. 4.5.E.2 d&e.

Conditions ' Prior to Occurrence:

Unit 1 @ 0% refueling outage.

I' nit 2 @ 80%

Unit 3 9 98%

Action specified in the Technical Specification Surveillance Requirements met L{ue_to inoperable equipment. Describe.

N/A garent Cause of Occurrence:

Cause of relay wiring error can not be determined.

An ilysis of Occurrence:

There was no damage to plant equipment. There was no activity release no personnel exposure or injury and no danger to health or safety of the public.

Cverecti /e Actv..n:

The relay was rewired and verified operable.

F:iilure Data:

NA

• Retention :

Period - Lifetime. Responsibility - Administrative Supervisor

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• Revision: