CTSP Hazard Identification and Control 5

Question 1

A tree worker identifies a 'hangar' (widow maker) lodged in the canopy above the work area. The safest course of action is to:

Accepted Answer

Remove all personnel from the area and dislodge it using rigging from a safe position

Answer

Hangars must be removed with all personnel clear of the drop zone, using rigging or tools that keep workers out from beneath the falling material.

Question 2

Which environmental condition most significantly increases the risk of tree failure during pruning or removal operations?

Accepted Answer

High winds exceeding recommended safe limits

Answer

High winds increase dynamic loading on trees and falling material, dramatically raising the risk of unexpected failures and loss of directional control.

Question 3

When is it appropriate to use the 'two-second rule' during tree felling?

Accepted Answer

To allow the tree to begin moving for two seconds before retreating on the escape route

Answer

The feller should watch the tree begin to move and then immediately retreat on the planned escape route without waiting longer than necessary.

Question 4

Girdling roots are a hazard to tree stability primarily because they:

Accepted Answer

Compress the root flare, reducing the effective diameter of the structural root zone

Answer

Girdling roots constrict the trunk and structural root zone, reducing the tree's ability to anchor itself and transport water and nutrients, leading to decline and instability.

Question 5

Under ANSI Z133, who bears primary responsibility for ensuring that all crew members are informed of job hazards before work begins?

Accepted Answer

The employer and the qualified supervisor or crew leader on site

Answer

ANSI Z133 places primary responsibility on the employer and the on-site qualified supervisor to brief all crew members on identified hazards before work begins.

CTSP - Certified Treecare Safety Professional Practice Test

CTSP - Certified Treecare Safety Professional Practice Test

CTSP Hazard Identification and Control 5