ML19309G246

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Summarizes 761220 Telcon W/D Hunter of Region 3,re Indications That Emergency Feedwater Had Been Blocked on Plant Trips Prior to Accident.Auxiliary Feedwater Pressure & Steam Driven Pump Pressure Dropped During 781025 Accident
ML19309G246
Person / Time
Site: Crane 
Issue date: 12/21/1979
From: Allison D
NRC - NRC THREE MILE ISLAND TASK FORCE
To: Frampton G
NRC - NRC THREE MILE ISLAND TASK FORCE
References
TASK-TF, TASK-TMR NUDOCS 8005050466
Download: ML19309G246 (1)


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005050 g

'2 I j /77 9 nt IIE!!0RAllDU:1 FOR: Georg'e Frampton, Deputy Director Tl1I Special Inquiry Group FR0!!:

Dennis Allison.

Group 04, Ti!I Staff

SUBJECT:

SU:!!ARY OF TELEP110!!E CALL !!ITil DOR'.!It! !!U! ITER On Uccenber 20, 1979, I called Doruin !!unter of ILE, Region III. !!r. Ilunter had worked on the IEE investigation of the Three ilile Island accident on

!! arch 20,1979.

IaskedI:r.ilunterifhehad-anyspecificindicationsthatenergencyfecduator flow had been blocked on plant trips 'rior to the accident.

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!!r. Ilunter said that a preliminary revicu of the data for the Ti:I-2 plant triponOctober25,197fhadprovidedthr.ecpiecesofinfornation:

(1) auxiliaryfeedwaterpicssuredroppedtoaboutzero; (2) stcan driven pump pressure dropped; (3), a printout indicated the pump off.

These' things occurred shortly after the transient tjegan. They indicate a..

possibility that caer0cncy feeduater flou had been blocked by operator action..

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This item was passed by the investigating team to ILE Region I for-further ai investigation in September 1979.in'a meno from.R. D. !!artin to ' James Allenmv

'Q as item 7 in section C.1.B.

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I Dennis P. Allison Group (4, TiI Staff cc:

R. Ilaynes

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R. DcYoung E. K. Cornell D. I!unter, Region III.

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