CPCS Pre-Use Checks 4

Question 1

What is the correct action if a pre-use check reveals the plant's rated capacity plate is missing or illegible?

Accepted Answer

Take the plant out of service until the plate is replaced or made legible

Answer

The rated capacity plate is essential safety information. Without it, operators cannot confirm safe working limits. The plant must be taken out of service until the plate is replaced and legible.

Question 2

Why should an operator walk around the plant before starting it for the first time each shift?

Accepted Answer

To check for damage, obstructions, leaks, and persons or objects in the danger zone

Answer

A walk-around check identifies overnight damage, fluid leaks, obstructions, missing safety items, and — critically — any persons or objects within the plant's operating zone before movement begins.

Question 3

During a pre-use check on an excavator, you notice one of the bucket teeth is missing. What should you do?

Accepted Answer

Report it and assess whether it is safe to operate — missing teeth can cause structural imbalance and increased wear

Answer

Missing bucket teeth can affect machine balance, increase stress on the bucket structure, and create projectile hazards. This must be reported and assessed by a competent person before continued use.

Question 4

What should an operator check regarding the plant's emergency stop or shutdown system during a pre-use check?

Accepted Answer

That it is accessible, functional, and clearly identified

Answer

Emergency stop systems must be accessible to the operator, clearly identified, and confirmed as functional during pre-use checks. An inaccessible or non-functional emergency stop is a serious safety defect.

Question 5

During a pre-use check, you find excessive play in the steering system. What action do you take?

Accepted Answer

Take the plant out of service immediately — excessive steering play is a serious control defect

Answer

Excessive play in steering means the operator cannot accurately control direction, creating serious risk of collision or running over persons. The plant must be taken out of service immediately.

CPCS Theory Practice Test

CPCS Theory Practice Test

CPCS Pre-Use Checks 4