STSC Tool and Equipment Safety 4

Question 1

When using a powder-actuated tool, what is the minimum thickness of the base material the tool should be fired into?

Accepted Answer

1/2 inch

Answer

OSHA requires that powder-actuated tools not be fired into material less than 1/2 inch thick unless the material is backed by a substance that will prevent the fastener from passing through.

Question 2

Which class of ladder is rated for extra-heavy-duty industrial use with a maximum load capacity of 375 lbs?

Accepted Answer

Type IAA

Answer

Type IAA ladders are rated for special duty with a 375 lb load capacity, making them the highest-rated class for industrial use.

Question 3

A grinder wheel is marked with a maximum RPM of 4,000. What is the correct action if the grinder motor speed is 3,600 RPM?

Accepted Answer

It is acceptable to use as the wheel rating exceeds the tool speed

Answer

The wheel's rated RPM must equal or exceed the tool's maximum speed; a 4,000 RPM wheel is safe on a 3,600 RPM grinder.

Question 4

What is the primary hazard of using a cheater bar (pipe extension) on a wrench handle?

Accepted Answer

Overloading the wrench beyond its rated torque causing breakage

Answer

Cheater bars multiply torque far beyond the tool's rated capacity, which can cause sudden tool failure and serious injury.

Question 5

According to OSHA, wooden handles on tools must be inspected and replaced when they are:

Accepted Answer

Cracked, splintered, or loose

Answer

OSHA 29 CFR 1926.301 requires that tool handles be free of cracks, splinters, and looseness to prevent loss of control during use.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Tool and Equipment Safety 4