NANTeL Human Performance Principles 4

Question 1

Which of the following is NOT typically considered an error precursor in nuclear human performance?

Accepted Answer

High worker experience level

Answer

High experience can actually increase vulnerability to skill-based errors through complacency, but it is not classified as an error precursor; the other three directly increase error likelihood.

Question 2

A tag-out is hanging on a breaker, but a worker believes the breaker should be energized for their task. The correct response is to:

Accepted Answer

Verify the tag's purpose with the work control group before proceeding

Answer

A tag-out must never be removed by anyone other than the authorized individual; verifying purpose through work control protects both equipment and personnel.

Question 3

The 'Swiss Cheese Model' of accident causation illustrates that accidents occur when:

Accepted Answer

Holes in multiple defensive layers simultaneously align

Answer

The Swiss Cheese Model shows that accidents result from the rare alignment of holes across multiple independent defensive layers, allowing hazards to reach the workforce.

Question 4

Which behavior BEST demonstrates a 'questioning attitude' in nuclear operations?

Accepted Answer

Pausing to verify plant conditions match procedure assumptions before acting

Answer

A questioning attitude means pausing to verify that actual conditions match expected conditions before committing to an action, especially at critical steps.

Question 5

Post-job reviews (PJRs) are MOST valuable when they:

Accepted Answer

Capture both lessons learned and what went well for future teams

Answer

PJRs are most effective when they capture positive practices alongside problems, creating a learning document that improves future performance of similar tasks.

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

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

NANTeL Human Performance Principles 4