05000296/LER-1980-006-03, /03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve

/03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve

ML18024B404
Person / Time
Site:	Browns Ferry
Issue date:	03/13/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B403	List: 05000296/LER-1980-006, Forwards LER 80-006/03L-0 05000296/LER-1980-006-03, /03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve
References
LER-80-006-03L-02, LER-80-6-3L-2, NUDOCS 8003180565
Download: ML18024B404 (3)

LER-1980-006, /03L-0:on 800217,w/unit at Steady State Operation, Emergency Equipment Cooling Water Flow Did Not Meet Min Flow of 4 Gpm.Caused by Shells & Mud Preventing Adequate Flow Through Residual Heat Removal Pump 3B Seal Cooler Valve

Event date:
Report date:
2961980006R03 - NRC Website

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that Emergency Equipment Cooling Mater flow did not meet the minimum s ecified flo of 4 gpm.

Redundant systems were operable.

There was no dan er to health or saf et of the public, no significant resultin~occurrences and no revious similar occurrences.

See Technical Specification 3.5.B.3.

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<.scription cf Occutrence:

Flow test MRI-303 was being run on the RHR pump seal coolers when it was noted that the EECW flow did not meet the minimum requirement of 4 gpm.

Conditions Prior to Occu< ren':e Unit 1 scheduled refueling outage Unit 2 hot shutdown Unit 3 - 100X steady state power Action specified in th Techrical Specification Surveillance Requirements m.".'.

due to inoper able

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Describe.

51 TTYXlT A~ar<:nt t.'ause of Occurrence:

Shells and mud restricted flow through valve in the pump seal cooler system.

Analvsis cf Occurrenc>>:

No danger to heaTtE or safety of the public, no release of activity, no damage to plant or equipment, no significant resulting chain of 'events.

( orr".cri e Act.ion Valve was disassembled and line cleaned and flushed.

Other heat exchangers will be tested under the periodically scheduled Ktl 303.

Failute Data:

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