NANTeL Human Performance Principles 2

Question 1

Which defense-in-depth layer is considered the LAST line of defense against human error in nuclear operations?

Accepted Answer

Emergency response

Answer

Emergency response is the final layer when all other defenses—engineering, administrative, and physical—have failed to prevent or mitigate an event.

Question 2

A worker is asked to perform a complex evolution and notices the procedure has not been revised since a plant modification. The BEST action is to:

Accepted Answer

Stop and report the discrepancy to supervision

Answer

Stopping and reporting a procedure discrepancy to supervision ensures the work is authorized only when documentation accurately reflects the current plant configuration.

Question 3

The 'Pre-Job Brief' is most effective when it includes which element?

Accepted Answer

Identification of critical steps and stop points

Answer

Identifying critical steps and stop points during a pre-job brief focuses the team's attention on the highest-risk moments in a task.

Question 4

What does the acronym STAR stand for in human performance tool usage?

Accepted Answer

Stop, Think, Act, Review

Answer

STAR—Stop, Think, Act, Review—is a self-checking technique that slows down task performance to reduce errors at critical steps.

Question 5

Which condition MOST increases the likelihood of a skill-based error?

Accepted Answer

Performing a highly routine task in a distracted state

Answer

Skill-based errors occur when automatic, routine actions are performed without conscious attention, especially when distractions interrupt the normal sequence.

(NANTeL) National Academy for Nuclear Training e-Learning Practice Test

(NANTeL) National Academy for Nuclear Training e-Learning Practice Test

NANTeL Human Performance Principles 2