CTSP Wood Chipper Safety

Question 1

According to ANSI Z133, what is the minimum safe distance a bystander must maintain from a wood chipper during operation?

Accepted Answer

50 feet (15 m)

Answer

10 feet (3 m)

Answer

25 feet (7.6 m)

Answer

100 feet (30 m)

Question 2

Which type of clothing presents the greatest entanglement hazard when operating a wood chipper?

Accepted Answer

Loose-fitting jacket with drawstrings or frayed edges

Answer

High-visibility vest with hook-and-loop closures

Answer

Snug-fitting long-sleeve shirt

Answer

Chaps worn over work pants

Question 3

A crew member notices the chipper's infeed chute is jammed with a large branch. What is the correct first action?

Accepted Answer

Immediately disengage the feed control and follow the manufacturer's lockout/tagout procedure

Answer

Push the branch harder using a smaller stick

Answer

Use hands to dislodge the jam while the machine is running

Answer

Reverse the chipper blades using the reverse switch while standing at the infeed

Question 4

Under ANSI Z133, which of the following practices is REQUIRED when hand-feeding brush into a wood chipper?

Accepted Answer

Feed from the side of the chute, not directly behind the material

Answer

Keep both hands on the material until it is fully pulled in

Answer

Always use bare hands for better grip and control

Answer

Stand directly behind the infeed chute for maximum leverage

Question 5

What is the purpose of the emergency bar or emergency stop bar found on most modern wood chippers?

Accepted Answer

It reverses the infeed rollers when struck by a worker being pulled in

Answer

It locks the feed roller at a fixed speed to prevent acceleration

Answer

It increases blade speed to quickly clear a jam

Answer

It triggers an audible alarm to warn bystanders

Question 6

According to ANSI Z133, who is responsible for conducting a pre-operation inspection of a wood chipper before each shift?

Accepted Answer

Any crew member assigned to operate or work near the chipper that day

Answer

The equipment manufacturer's designated service technician

Answer

The safety officer at the company's main office

Answer

The crew leader only — workers are not authorized to inspect equipment