05000366/LER-1980-053-03, During Normal Operation, Notification Received from Comsip,Inc of Design Defect on Primary Containment hydrogen-oxygen Analyzers.Caused by Absence of Design to Prevent Deadheading

During Normal Operation, Notification Received from Comsip,Inc of Design Defect on Primary Containment hydrogen-oxygen Analyzers.Caused by Absence of Design to Prevent Deadheading

ML19318A398
Person / Time
Site:	Hatch
Issue date:	05/19/1980
From:	Coggin C GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318A394	List: 05000366/LER-1980-053, Forwards Updated LER 80-053/03X-2 05000366/LER-1980-053-03, During Normal Operation, Notification Received from Comsip,Inc of Design Defect on Primary Containment hydrogen-oxygen Analyzers.Caused by Absence of Design to Prevent Deadheading
References
LER-80-053-03X, LER-80-53-3X, NUDOCS 8006200481
Download: ML19318A398 (2)

LER-1980-053, During Normal Operation, Notification Received from Comsip,Inc of Design Defect on Primary Containment hydrogen-oxygen Analyzers.Caused by Absence of Design to Prevent Deadheading

Event date:
Report date:
3661980053R03 - NRC Website

text

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EVF bbl ing normal operation. noti fication f rom the manuf acturer. Comsip. Inc.l lB lthat a design defect was identified on the primary containment hydrogen-l I

a test, the dis-1 B loxygen analyzers.

While the manufacturer was performing i

isolated which deadheaded thel

'S Icharge valve to an analyzer sample pump was 1c Ipump and could have ruptured the diaphragm.

T : modes of failure were l

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1) Release of containment gas, 2_) system inoperability.

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IThere were no effects upon public health or safety due to this event.

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CAUSE

CAUSE COMP.

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CAuSE DESCRIPTION ANo CORRECTIVE ACTIONS 27 E IThe notential of component failure is the absence of desian by the manu-1 E Ifacturer to prevent the samole numo from deadheading.

A standing order i E lhas been issued to trip the samole pump upon a group 2 isolation.

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E Idesign change and material requisition have been written to install a l

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LER #:

50-366/1980-053 Licensee:

Georgia Power Company Facility Name:

Edwin I.

Hatch Docket'#:

50-366

Narrative

Report for LER 50-366/1980-053, Rev. 2 During normal plant operation, notification was received from i

the A/S, Bechtel Power Corporation, via telecopy that a design defect exists on Hatch 2 H2-02 analyzers as identified by the manufacturer, Comsip, Inc.

A sample pump was deadheaded during testing by the manufacturer and a pressure buildup was noted to have the potential of a diaphragm rupture.

Comsip reported Lnis event to the Region V NRC director under 10CFR21 requirements and listed llatch 2 as one of the plants affect-ed.

A diaphragm failure was experienced during a PCIS test as reported on ' LER 50-366/1980-065.

As an interim pro tec ti on I

scheme against diaphragm rupture, a standing order has been issued to trip the sample pump upon a Group II isolation.

Additionally, operators are to check that the pump suction and discharge valves are open before returning the pump to service.

A design change request and material requisition have been generated to install a bypass around the pump to recirculate the process gas in the isolated condition by l

7-31-60.

(Rev.

I committed to 6-16-80; new commitment date j

requested due to delay in parts delivery from the manufactur-cr.)

Also an interlock to trip the sample pump upon isolation of the PCIS valves will be implemented during the next refueling outage.

The design defect is not applicable to i

H -02 analyzers.

There were no effects upon lla t en i

2 public health and safety due to this event.

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