No Color On two occasions, problem assessments did not properly evaluat
potential risk significance and implement timely effective corrective actions
Although these deficiencies were not the root or contributing causes to the actua
events, they represent adverse performance which limited the licensees ability t
identify and correct adverse safety conditions. Specifically, 1) station personne
did not recognize the potential risk significance of the degraded A auxiliar
river water pump seal and did not correct the condition in a timely manner; an
2) the safety significance assessment for a reactor protection system (RPS
miscalibration event was also deficient, in that engineers incorrectly conclude
that protective functions of the instrument channel were not affected
Additionally, corrective actions for the RPS miscalibration event did not preclud
two repeat miscalibration occurrences.