Stihl Risk Management & Mitigation 5

Question 1

When bucking a log supported on both ends, which cutting sequence mitigates the risk of pinching the bar?

Accepted Answer

Cut the top one-third first, then finish from the bottom up

Answer

A log supported at both ends sags in the middle, so an overbuck followed by an underbuck prevents the kerf from closing on the bar.

Question 2

A risk assessment rates a hazard by combining which two factors?

Accepted Answer

The likelihood of occurrence and the severity of the potential outcome

Answer

Standard risk matrices score each hazard by how likely it is to occur and how severe the consequence would be.

Question 3

What is the safest way to mitigate the risk of a barber chair when felling a tree with heavy forward lean?

Accepted Answer

Use a bore (plunge) cut to establish the hinge before releasing the back strap

Answer

Bore cutting sets the hinge while the back strap holds the tree, preventing the trunk from splitting vertically under lean tension.

Question 4

After a near-miss incident where a top broke out and landed near a worker, what is the MOST valuable risk-management follow-up?

Accepted Answer

Report and analyze the near miss to correct the root cause before an actual injury occurs

Answer

Near-miss reporting exposes system weaknesses so root causes can be corrected before they produce injuries.

Question 5

Which pre-operation check directly mitigates the risk of a thrown chain injuring the operator?

Accepted Answer

Verifying correct chain tension and the condition of the chain catcher and bar

Answer

Proper chain tension plus an intact chain catcher and bar keep the chain seated and contain it if it derails.

(Stihl) Stihl Certification Practice Test