05000298/LER-1979-014-03, /03L-0 on 790509:chamber Vent Valve for Torus Level Transmitter Was Left Closed.Caused by Technician Error.Vent Valve Opened & PC-LT-12 Placed Back Into Svc

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/03L-0 on 790509:chamber Vent Valve for Torus Level Transmitter Was Left Closed.Caused by Technician Error.Vent Valve Opened & PC-LT-12 Placed Back Into Svc
ML19224D819
Person / Time
Site: Cooper 
Issue date: 06/08/1979
From: Lawrence L
NEBRASKA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19224D817 List:
References
LER-79-014-03L, LER-79-14-3L, NUDOCS 7907170082
Download: ML19224D819 (1)


LER-1979-014, /03L-0 on 790509:chamber Vent Valve for Torus Level Transmitter Was Left Closed.Caused by Technician Error.Vent Valve Opened & PC-LT-12 Placed Back Into Svc
Event date:
Report date:
2981979014R03 - NRC Website

text

NRC FOAM 366 U. S. NUCLE AR R EGULATORY COMMISSION 17271 LICENSEE EVENT REPORT CONTROL sLOCx: l l

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 0 l@l 4 1 l1 l1 1l@l l@

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6 3 LICENSEE CODE to 15 LICEN5E NuM8EH 25 26 LtCENSE T4 PE 30 37 CAT 68 CON'T RCI I L @l o l 310 l o 1012 l 9 l b j@l 01510 l9 l 719 hl nl 61 nl Al ?! oI@

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ed 61 COCKET NUVSER bd 63 EVENT DATE 74 1

REPORT D ATE 30 EVENT DESCRIPTION xND PROS ABLE CONSEQUENCES h o

2 lThe reference chamber vent valve for torus levn1

  • m,wie n-(ur-T T 1 M m loc-I l closed af ter performing a special checic verifying HPCI-LS-913 upner shutoff valve o

3 l was open and free of obstruction. Torus water level was normal at all times and the 1

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iredundant level indicator was available and operable.

There was no effect upon 1

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o ;s lpublic health and safety.

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a9 SYSTEM

CAUSE

CAUSE COVP V A LV E CCCE CODE SUSCOCE COMPONENT CODE SUFCODE SUSCOCE I S l Al@

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  • E QUENTI AL OCCURRENCE REPORT REVISION LE R RO EVENT YE AR REPORT NO.

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21 22 23 24 26 27 23 29 30 31 32 ACTION FUTURE E88ECT SHUTDOWN A'*ACHMENT N P R O-4 P AIVE COUP.

COMPONENT TAKEN ACTION ON PLANT YETHCC HOURS SU9VITTED FORMbOB.

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.o 41 42 43 44 47 CAUSE CESCRIPTION AND CORRECTIVE ACTIONS o j l A technictan failed to open the reference chamber vent valve for torus PC-LT-12 af ter I i

icompletion of a soecial test. The reference chamber vent valve v,q orn-nd

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i lplaced back into service. This occurrence has been discussed with the eersonnel in-i l volved and a copy of the NCR hss been routed to all Instrument Technicians.

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% POWER OTHER STATUS IS OV RY OISCON ERY DESCRIPTION lEl@ l0l5l0l@l l A l@l Operator Observation NA 1

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3 9 10 11 44 45 30 PERSONNEL E XPOSLR ES NuvaER TYPE OESCRIPTION

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7 3 3 11 12 13 E-PERSONNE y :NJUR:E$

NUVBER CESCRIPTION 0l0 01@l NA l

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NAME OF P9EPARER PHCNE: