05000325/LER-1980-018-03, /03L-0:on 800213,during Surveillance Tour,B Loop of Core Spray Was Found Draining from Torus After Being Placed Under Clearance for Maint.Caused by Open FO-10B Valve,Pump Vents & Drain valves.FO-10B Valve Was Shut

/03L-0:on 800213,during Surveillance Tour,B Loop of Core Spray Was Found Draining from Torus After Being Placed Under Clearance for Maint.Caused by Open FO-10B Valve,Pump Vents & Drain valves.FO-10B Valve Was Shut

ML19305A826
Person / Time
Site:	Brunswick
Issue date:	03/12/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19305A822	List: 05000325/LER-1980-018, Forwards LER 80-018/03L-0 05000325/LER-1980-018-03, /03L-0:on 800213,during Surveillance Tour,B Loop of Core Spray Was Found Draining from Torus After Being Placed Under Clearance for Maint.Caused by Open FO-10B Valve,Pump Vents & Drain valves.FO-10B Valve Was Shut
References
LER-80-018-03L-01, LER-80-18-3L-1, NUDOCS 8003180413
Download: ML19305A826 (2)

LER-1980-018, /03L-0:on 800213,during Surveillance Tour,B Loop of Core Spray Was Found Draining from Torus After Being Placed Under Clearance for Maint.Caused by Open FO-10B Valve,Pump Vents & Drain valves.FO-10B Valve Was Shut

Event date:
Report date:
3251980018R03 - NRC Website

text

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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8 60 Cf DOCK ET NUveER ts 69 EVENT QATE 74 75 RtPOHT DATE fic EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 1912 l l During a norma' surveillance tour of the Reactor Building at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br />, the l

lo l3 l l Auxiliary Operator noticed that the "B" loop of Core Spray was still draining l

l o 14 l l af ter being placed under a clearance at 0430 hours0.00498 days <br />0.119 hours <br />7.109788e-4 weeks <br />1.63615e-4 months <br /> for maintenance.

It was l

lo Isl l determined that this water was coming from torus and that torus level was in j

1o is l l its normal operating band. Approximately 5500 gallons were drained from the I

j l o 17 l l torus.

1.o l a l l Technical Specifications 3.6.1.1, 6.9.1.9c l

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i t o l l The FO-10B valve, a 3" manual isolation valve in the minimum flow line, was found l

l1 Iil i Open with the pump vents and drain valves, three 3/4" lines and one 1" line, also i

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l open, providing a gravity flow path from the torus to the Core Spray sump.

I,p7i i,l3l l FO-10B valve was shut per the clearance instructions.

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8 9 10 NAME OF PREPARER PHONE:

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'S LER CONTINUATION -- RO NO. 1-80-18 Facility: BSEP Unit No. 1

. Event Date: March 12, 1980

~

The Control Operator instructed the Auxiliary Operator to hang a clearance on the "B" Core Spray pump for pump maintenance. The Auxiliary Operator was informed that all " motor operated" valves were in their required clearance positions.

The Auxiliary Operator mistook this to mean that all valves, except the pump vent and drain valves, were in their required positions and did not check the valve positions when hanging the cicarance tags.

The

. Auxiliary Operator had not completed the on-the-job training check-off sheets which indicate clearance training.

Shift Operating Supervisors have reviewed the training records of all personnel assigned to their shifts to ascertain those qualified to hang clearances and ensure that only those personnel are allowed to hang clearances. TI-104 will be revised to require that sections involving clearances be completed prior to the operator being qualified to hang clearances.

This LER will be reviewed by all Operations personnel.

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