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

Time pressure

Answer

Unfamiliar task

Answer

Simultaneous tasks

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

Remove the tag since it appears to be a mistake

Answer

Energize the breaker and report the discrepancy afterward

Answer

Ask a peer if the tag looks correct

Question 3

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

Accepted Answer

Holes in multiple defensive layers simultaneously align

Answer

One hole in a single defensive layer is exposed

Answer

A worker intentionally bypasses all safety systems

Answer

Equipment failure coincides with a natural disaster

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

Challenging a supervisor's authority in front of peers

Answer

Proceeding with a task when something feels slightly unusual

Answer

Requesting additional pay before performing high-risk work

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

Focus exclusively on documenting errors that occurred

Answer

Are conducted only after abnormal events

Answer

Assign responsibility for any deviations found

Question 6

The 'three-way communication' technique in nuclear operations requires that the receiver:

Accepted Answer

Repeat back the message and receive confirmation of accuracy

Answer

Ask for the message to be repeated three times

Answer

Record the message in the shift log before acknowledging

Answer

Confirm receipt by signing the procedure

Question 7

Which best defines 'task saturation' as a human performance concern in nuclear plants?

Accepted Answer

A condition where excessive demands overwhelm a worker's cognitive capacity

Answer

A worker completing too few tasks during a shift

Answer

Equipment overload from simultaneous system demands

Answer

Regulatory requirements exceeding plant capabilities