Struck-by and Caught-in/Between Hazards Flashcards

Under 1926.302(b)(7), what is required at the air source for pneumatic hoses with an inside diameter greater than ½ inch?

Answer: A safety device that reduces pressure if the hose fails

Hoses over ½ inch ID need a safety device at the supply source or branch line to reduce pressure if the hose fails, which prevents hose whip.

Under OSHA, compressed air used for cleaning must be reduced to below what pressure?

Answer: 30 psi

Compressed air for cleaning must be under 30 psi, with effective chip guarding and PPE, to prevent flying-particle injuries.

Which nail gun trigger type has the lowest risk of unintended nail discharge?

Answer: Single sequential actuation trigger

NIOSH and OSHA report that the full sequential trigger roughly halves acute nail gun injury risk compared with the contact trigger.

Which requirement applies to powder-actuated tools under 1926.302(e)?

Answer: Only employees trained in their operation may use them

1926.302(e)(1) allows only trained employees to operate powder-actuated tools, and tools must not be loaded until just before use.

On a bench grinder, what is the maximum gap between the work rest and the wheel?

Answer: 1/8 inch

Work rests must be kept within 1/8 inch of the wheel so the workpiece cannot jam between the rest and the wheel.

Why must exposed protruding rebar be capped or otherwise guarded under 1926.701(b)?

Answer: To eliminate the impalement hazard

1926.701(b) requires protruding reinforcing steel to be guarded so it cannot impale workers.

Which practice best prevents caught-in injuries around rotating shafts and power take-offs?

Answer: Keeping guards in place and avoiding loose clothing, jewelry, and long unsecured hair

Guarding plus control of entanglement items like loose clothing and hair stops workers from being pulled into rotating parts.