NEBOSH CC Working at Height 2 — Questions and Answers
Question 1: What is a Mobile Elevated Work Platform (MEWP) also commonly known as?
- Cherry picker or scissor lift (Correct answer)
- Tower scaffold
- Podium steps
- Ladders
Correct answer: Cherry picker or scissor lift
MEWPs are commonly known as cherry pickers (boom-type platforms) or scissor lifts (vertically rising platforms). They provide elevated working positions and must be operated by trained and competent persons.
Question 2: When must a scaffold inspection report be completed?
- Before the end of the working period in which the inspection was carried out (Correct answer)
- Within 24 hours of the inspection
- Within 48 hours of the inspection
- Only if a defect is found
Correct answer: Before the end of the working period in which the inspection was carried out
Under the Work at Height Regulations 2005, a scaffold inspection report must be completed before the end of the working period in which the inspection was carried out. The report must be available for inspection.
Question 3: What is a 'collective protective measure' in the context of working at height?
- A measure that protects all workers in an area regardless of their individual actions (Correct answer)
- A measure that requires each worker to take individual action
- A PPE item worn by each worker
- A barrier only for specific named workers
Correct answer: A measure that protects all workers in an area regardless of their individual actions
Collective protective measures protect multiple workers without requiring individual action from each worker. Examples include guard rails, safety nets and working platforms. They are preferred over personal protective equipment.
Question 4: What is the maximum height for which a freestanding mobile tower scaffold can be erected on a firm, level surface (3T method)?
- Height-to-base ratio of 3:1 indoors and 3.5:1 outdoors is not correct — the ratio is 3:1 outdoors and 3.5:1 indoors
- The height should not exceed 12 metres
- The height depends on the base dimensions: 3.5 times the minimum base width indoors (Correct answer)
- The height must be calculated by a structural engineer in all cases
Correct answer: The height depends on the base dimensions: 3.5 times the minimum base width indoors
Using the 3T (Through The Trap) method, a mobile tower scaffold can be erected up to 3.5 times its minimum base dimension when used indoors on a firm, level surface, and up to 3 times outdoors. The base dimensions determine the maximum safe height.
Question 5: What personal fall protection system uses a short lanyard with an energy absorber to limit free fall distance?
- Fall arrest system (Correct answer)
- Work restraint system
- Fall prevention system
- Collective protection system
Correct answer: Fall arrest system
A fall arrest system uses a lanyard with an energy absorber connected to a full-body harness and an anchor point. It limits the distance fallen and absorbs energy to reduce the forces on the body during an arrested fall.
Question 6: What is a work restraint system in working at height?
- A system that prevents the user from reaching a position where a fall could occur (Correct answer)
- A system that arrests a fall after it begins
- A system that mitigates the impact of a fall
- A collective protective measure used at edges
Correct answer: A system that prevents the user from reaching a position where a fall could occur
A work restraint system uses a lanyard of a calculated length to prevent the user from physically reaching the point where a fall could occur. It prevents the fall from happening, unlike a fall arrest system which catches a person who has fallen.
NEBOSH CC Working at Height 2
What is a Mobile Elevated Work Platform (MEWP) also commonly known as?