STSC Tool and Equipment Safety

Question 1

What is the most important step a worker must take before operating any power tool on a construction site?

Accepted Answer

Inspect the tool for damage and defects

Answer

Apply lubrication to all moving parts

Answer

Obtain written permission from the foreman

Answer

Remove all guards for better visibility

Question 2

When is it appropriate to use a cracked or damaged hand tool on a construction site?

Accepted Answer

Never — it must be removed from service immediately

Answer

Only for light-duty tasks

Answer

When no replacement is immediately available

Answer

After wrapping the damaged area with tape

Question 3

What is the primary purpose of blade guards on circular saws?

Accepted Answer

To prevent blade contact and contain sparks and debris

Answer

To reduce noise during cutting operations

Answer

To improve the accuracy of straight cuts

Answer

To keep the blade cool during extended use

Question 4

Under OSHA 29 CFR 1926, which subpart specifically governs hand and power tools used in construction?

Accepted Answer

Subpart I

Answer

Subpart J

Answer

Subpart K

Answer

Subpart L

Question 5

What does 'double insulation' on an electric power tool indicate?

Accepted Answer

The tool has two separate insulation systems so a separate ground is not required

Answer

The tool has two layers of insulation around the power cord only

Answer

The tool requires a double-insulated extension cord to operate safely

Answer

The tool has twice the voltage protection compared to standard tools

Question 6

What is the maximum allowable gap between the work rest and the abrasive wheel on a bench grinder?

Accepted Answer

1/8 inch (3 mm)

Answer

1/4 inch (6 mm)

Answer

1/2 inch (13 mm)

Answer

3/4 inch (19 mm)

Question 7

What should a worker do if a power tool begins to vibrate abnormally or malfunction during use?

Accepted Answer

Stop using the tool immediately and report it for inspection

Answer

Continue working but reduce speed and pressure

Answer

Tighten all accessible screws and bolts, then resume

Answer

Apply additional lubrication and continue the task