Entrapment and Protrusion Hazard Testing Flashcards

According to ASTM F1487, what is the minimum opening size that begins the head entrapment hazard zone?

Answer: 3.5 inches (88.9 mm)

Openings between 3.5 inches and 9 inches are considered the head entrapment zone because a child's head can enter but may not exit.

What is the upper boundary of the head entrapment hazard zone per ASTM F1487?

Answer: 9.0 inches (228.6 mm)

Openings 9 inches or larger allow a child's head to pass through completely without entrapment, so they are outside the hazard zone.

Which ASTM standard is the primary reference for public playground equipment safety requirements including entrapment hazards?

Answer: ASTM F1487

ASTM F1487 is the Standard Consumer Safety Performance Specification for Playground Equipment for Public Use.

When testing an angled opening for head entrapment, the probe must be inserted at what angle relative to the opening?

Answer: In the most unfavorable angle that allows entry

Inspectors must test openings at the most unfavorable angle to simulate a child's worst-case head-first entry scenario.

An upper-body entrapment hazard exists when a child's torso can enter an opening but cannot:

Answer: Exit or withdraw from the opening

Upper-body entrapment occurs when the torso enters but the child cannot reverse the entry due to body geometry differences between entry and exit.

What is the minimum diameter of the head entrapment test probe (small headform) used in CPSC playground safety testing?

Answer: 3.5 inches (88.9 mm)

The small headform probe is 3.5 inches in diameter, representing the smallest child head that might attempt to enter an opening.

Which of the following opening shapes is MOST likely to create a head entrapment hazard even if initial measurements seem borderline?

Answer: A V-shaped or wedge opening that narrows after the entry point

V-shaped or wedge openings are especially dangerous because entry is easy but the narrowing prevents the head from withdrawing.