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Forwards LER 99-002-00, "LCO 3.0.3 Entered Due to TS Bases Statement Interpretation." Action occurred after RHR pump failed to start.Plant at no time was in condition where required decay heat removal system were not available.

Accession Number: ML20206B852

Date Released: Friday, August 7, 2020

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• ML20206B849 - Forwards LER 99-002-00, "LCO 3.0.3 Entered Due to TS Bases Statement Interpretation." Action occurred after RHR pump failed to start.Plant at no time was in condition where required decay heat removal system were not available. (1 page(s), 4/26/1999)
• ML20206B855 - LER 99-002-00:on 990327,RHR A pump failed to start & LCO 3.0.3 was entered due to TS bases misinterpretation.Caused by failed optical isolator that provided signal to pump start permissive circuitry.Subject circuitry was replaced. (3 page(s), 4/26/1999)