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Forwards Rev 1 to LER 92-006 re FW control perturbations due to secondary side transient,causing SG high level FW isolations.Rev provides update on root cause determination & further corrective actions as committed to LER 92-006-00.

Accession Number: ML17263A344

Date Released: Monday, April 30, 2018

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• ML17263A343 - Forwards Rev 1 to LER 92-006 re FW control perturbations due to secondary side transient,causing SG high level FW isolations.Rev provides update on root cause determination & further corrective actions as committed to LER 92-006-00. (4 page(s), 7/29/1993)
• ML17263A345 - LER 92-006-01:on 920518,main FW isolations occurred on SG A due to overfeeding SG A while in manual control.Caused by heater drain tank level control sys problem.Administrative controls instituted to ensure valve not open. (22 page(s), 7/29/1993)