MEOC Risk Assessment & Mitigation 3

Question 1

A spotter signals the mini excavator operator to stop immediately. What should the operator do?

Accepted Answer

Stop all machine movement immediately

Answer

A stop signal from a spotter must be obeyed instantly because the spotter can see hazards the operator cannot.

Question 2

When assessing the risk of working on a slope, which factor is MOST critical to evaluate first?

Accepted Answer

The machine's rated slope operating angle from the manufacturer

Answer

Manufacturers specify the maximum safe operating angle for a machine; exceeding it dramatically increases rollover risk.

Question 3

Which hazard is MOST likely to be overlooked during a visual risk assessment before excavation?

Accepted Answer

Buried utilities not shown on records

Answer

Unmapped or incorrectly marked buried utilities pose a hidden risk that a visual inspection alone cannot detect.

Question 4

What does a 'near miss' report on a jobsite serve to accomplish in terms of risk management?

Accepted Answer

It identifies hazards before they result in actual injury or property damage

Answer

Near miss reports capture hazard data that allows corrective actions to be taken before a similar event causes injury.

Question 5

Silica dust generated during excavation work is regulated under OSHA standard 29 CFR 1926.1153. What is the PRIMARY health risk it presents?

Accepted Answer

Irreversible lung disease including silicosis and lung cancer

Answer

Respirable crystalline silica causes silicosis, lung cancer, and COPD — all potentially fatal and irreversible conditions.

(MEOC) Mini Excavator Operator Certification Practice Test