Here's NUREG 1021, BTW. Word search for "Critical task."
http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1021/initial/index.htmlSome key things;
If an applicant makes a single error related to a rating factor, circle |
an “RF Score” of “2” for that rating factor, unless the error related to |
a critical task, in which case a score of “1” would be required. Missing |
a critical task does not necessarily mean that the applicant will fail |
the simulator test, nor does success on every critical task prevent
the examiner from recommending a failure if the applicant had
other deficiencies that, in the aggregate, justify the failure based on
the competency evaluations. |
The examination team should pay particular attention to the completion of tasks
that they identified as critical to plant safety. The crew may compensate for actions
that individual operators performed incorrectly, as long as the critical task was completed
satisfactorily. Other less-significant deficiencies should also be accounted for
in the rating factor evaluations to provide a source of information for crew
remedial training during subsequent requalification training.
Basically, missing one critical task in a scenario doesn't necessarily mean a failure. It seems there is a lot of things that have to be taken into consideration.
Justin
