CPSI Entrapment and Protrusion Hazard Testing 3 — Questions and Answers
Question 1: Openings in guardrails and platforms must be checked for entrapment hazards. Which location on a guardrail is most commonly cited for head entrapment during CPSI inspections?
- The top rail surface
- Openings between vertical balusters or rail members (Correct answer)
- The attachment point at the platform
- The corner junction of two guardrails
Correct answer: Openings between vertical balusters or rail members
Vertical balusters or rail members frequently create openings in the 3.5–9 inch hazard zone, making them a primary entrapment concern on guardrails.
Question 2: A child's leg becomes trapped in a ladder rung opening. This is classified under which CPSI hazard category?
- Leg entrapment (Correct answer)
- Head entrapment
- Upper-body entrapment
- Protrusion hazard
Correct answer: Leg entrapment
Leg entrapment is a distinct hazard category where a child's leg (particularly the foot and ankle) can become trapped in an opening.
Question 3: When inspecting a sliding pole, which entrapment risk does a CPSI inspector specifically evaluate?
- Head entrapment at the base of the pole
- The gap between the pole and any surrounding structure or decking opening (Correct answer)
- Protrusion hazards from the pole fasteners
- Upper-body entrapment at the top of the pole
Correct answer: The gap between the pole and any surrounding structure or decking opening
The opening around a sliding pole where it passes through a platform deck can be a head entrapment hazard if the gap falls in the 3.5–9 inch zone.
Question 4: A triangular opening is found in a climber structure. Under CPSI standards, this opening is considered hazardous if a 9-inch diameter probe can enter but the opening cannot accommodate which secondary test?
- A 12-inch rigid rectangle
- A 9-inch diameter probe rotated 90 degrees (Correct answer)
- A 5.5-inch torso block passage
- A 4-inch cylindrical neck probe
Correct answer: A 9-inch diameter probe rotated 90 degrees
For triangular and irregular openings, the entrapment probe must be tested in the most unfavorable orientation, including rotation, to assess true entrapment risk.
Question 5: Neck entrapment is MOST likely to occur in which type of playground structure opening?
- Large openings greater than 9 inches
- Openings specifically sized between 3.5 and 9 inches
- V-shaped or angled openings where a child's neck but not head can fit (Correct answer)
- Circular openings less than 3.5 inches
Correct answer: V-shaped or angled openings where a child's neck but not head can fit
Neck entrapment occurs when an opening allows a child's neck to pass but the head is too large to follow, which is most common in V-shaped or angled openings.
Question 6: When a CPSI inspector tests openings near the top of climbing structures (at and above the 20-inch fall height threshold), what additional concern is prioritized?
- Thermal burns from sun-heated metal
- Fall through combined with entrapment leading to suspension-type injuries (Correct answer)
- Impact attenuation of the surrounding surfacing
- Protrusion hazards at elevated heights
Correct answer: Fall through combined with entrapment leading to suspension-type injuries
At elevated heights, entrapment combined with a fall can result in a child being suspended, making strangulation and crushing injury risks significantly higher.
Question 7: Which of the following platform edge conditions would a CPSI inspector flag as a potential entrapment concern?
- A platform with continuous solid edging
- Openings between decking boards measuring 4 inches wide (Correct answer)
- A platform surface with drainage holes under 0.5 inches
- A platform height of 6 feet with a continuous guardrail
Correct answer: Openings between decking boards measuring 4 inches wide
Openings between decking boards measuring between 3.5 and 9 inches fall within the head entrapment hazard zone and must be addressed.
CPSI Entrapment and Protrusion Hazard Testing 3
Openings in guardrails and platforms must be checked for entrapment hazards.
Which location on a guardrail is most commonly cited for head entrapment during CPSI inspections?