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

Administrative controls

Answer

Engineering controls

Answer

Physical barriers

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

Proceed carefully using best judgment

Answer

Cross out the outdated steps and continue

Answer

Perform the task from memory

Question 3

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

Accepted Answer

Identification of critical steps and stop points

Answer

A review of past unrelated incidents

Answer

Assignment of blame for previous errors

Answer

A summary of all plant technical specifications

Question 4

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

Accepted Answer

Stop, Think, Act, Review

Answer

Scan, Target, Align, Record

Answer

Stop, Test, Assess, Report

Answer

Simulate, Train, Analyze, Respond

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

Performing a rarely done task for the first time

Answer

Performing a task under direct supervision

Answer

Performing a task with a detailed procedure in hand

Question 6

In nuclear human performance, 'latent organizational weaknesses' are best described as:

Accepted Answer

Hidden systemic conditions that make errors more likely

Answer

Errors made by individual operators during a shift

Answer

Failures caught by automatic safety systems

Answer

Violations intentionally committed by workers

Question 7

A supervisor observes a technician skipping a verification step because they believe the outcome is 'obvious.' The supervisor should FIRST:

Accepted Answer

Stop the work and reinforce the importance of the verification step

Answer

Allow the technician to proceed since they are experienced

Answer

Document the skip and address it at the next performance review

Answer

Ask a second technician to perform the verification later