CPSI Entrapment and Protrusion Hazard Testing Questions and Answers 2

Question 1

Which ASTM F1487 dimension defines the lower boundary of the head entrapment zone?

Accepted Answer

3.5 inches

Answer

The head entrapment zone begins at 3.5 inches — openings larger than 3.5 inches can admit a child's head.

Question 2

How many thread pitches beyond the nut is the maximum allowable protrusion for fasteners on playground equipment?

Accepted Answer

2 thread pitches

Answer

ASTM F1487 limits fastener protrusion to a maximum of 2 thread pitches beyond the nut.

Question 3

What testing device is used to check for head entrapment openings on playground equipment?

Accepted Answer

A 3.5-inch and 9-inch probe or go/no-go gauge

Answer

CPSIs use go/no-go probes or gauges with critical dimensions of 3.5 inches and 9 inches to test for head entrapment openings on playground equipment.

Question 4

What is the finger entrapment zone for playground equipment openings?

Accepted Answer

Between 3/8 inch and 1 inch

Answer

The finger entrapment zone is openings between 3/8 inch (0.375 inches) and 1 inch in diameter — fingers can enter but cannot be withdrawn.

Question 5

What is the torso entrapment zone as defined in ASTM F1487?

Accepted Answer

9 to 18 inches

Answer

The torso entrapment zone is openings between 9 and 18 inches — these can admit a child's torso but not allow it to exit.

CPSI - Certified Playground Safety Inspector Practice Test