05000366/LER-1980-047-03, /03L-0:on 800405,while Performing Remote Shutdown Panel Instrument Checks,Torus Water Level Instrument 2T48-R070 Found Downscale.Caused by Technician Failing to Verify Markings of Transmitter 2T48-N070 W/Proper Tubing

/03L-0:on 800405,while Performing Remote Shutdown Panel Instrument Checks,Torus Water Level Instrument 2T48-R070 Found Downscale.Caused by Technician Failing to Verify Markings of Transmitter 2T48-N070 W/Proper Tubing

ML19309H252
Person / Time
Site:	Hatch
Issue date:	04/29/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19309H250	List: 05000366/LER-1980-047, Forwards LER 80-047/03L-0 05000366/LER-1980-047-03, /03L-0:on 800405,while Performing Remote Shutdown Panel Instrument Checks,Torus Water Level Instrument 2T48-R070 Found Downscale.Caused by Technician Failing to Verify Markings of Transmitter 2T48-N070 W/Proper Tubing
References
LER-80-047-03L, LER-80-47-3L, NUDOCS 8005090439
Download: ML19309H252 (2)

LER-1980-047, /03L-0:on 800405,while Performing Remote Shutdown Panel Instrument Checks,Torus Water Level Instrument 2T48-R070 Found Downscale.Caused by Technician Failing to Verify Markings of Transmitter 2T48-N070 W/Proper Tubing

Event date:
Report date:
3661980047R03 - NRC Website

text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121l While performina surveillance crocedure HNP-2-318J. Remnte Shutdown Panel I

l o l 31 l Instrument Checks, the torus water level instrument. 2T48-R070, was found

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l o 141 l downscale.

Investigations revealed that transmitter, 2T48-N070, was in-I lo isi I advertently installed backwards following calibration on March 11, 1980.

I lo l6 i i The reactor was in cold shutdown the entire time the transmitter was re-I lo l7l 1 versed. The instrument is not required in cold shutdown. There was no i

1 o is i i effect on public health and safety. This is a non-repetitive event.

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NARRATIVE

REPORT Georgia Power Company Plant E. I. Hatch Baxley, Georgia 31513 Reportable Occurrence Report No. 50-366/1980-047.

On April 5,1980, while performing routine surveillance procedure HNP-2-3184, Remote Shutdown Panel Instrument Checks, the torus water level indicator, 2T48-R070, was found to be downscale.

Investigations revealed the associated transmitter, 2T48-N070, had been installed backwards following calibration on March 11, 1980. The instrument is a Rosemount Model 1151DP transmitter and is constructed to allow the body to be installed either of two ways.

The body is plainly marked high side and low side to avoid the type error made here. The instrument installation was corrected and the instrument -

returned to service. The technician was made aware of his mistake and reminded of the importance of verifying the correct installation.

During the time the transmitter was installed backwards, the reactor remained in cold shutdown, Condition 4.

This instrument loop is not required to be operable during Conditions 4 and 5, but it is being reported because it is required operable, therefore reportable, in conditions 1,2 and 3.

The generic review revealed no inherent problems associated with the event.

There was no effect on public health and safety. This is a non-repetitive event.

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