IPAF Safe Operating Procedures 2 — Questions and Answers
Question 1: What is the purpose of the dead man's control (hold-to-run) on a MEWP?
- It locks the controls when the operator leaves the platform
- It ensures the machine only operates while the control is actively held, stopping movement when released (Correct answer)
- It prevents unauthorised persons from starting the machine
- It activates the emergency lowering system
Correct answer: It ensures the machine only operates while the control is actively held, stopping movement when released
The dead man's control (hold-to-run) requires the operator to continuously hold the control lever or button for the machine to move. Releasing the control immediately stops all movement, reducing the risk of uncontrolled machine operation.
Question 2: When setting up a MEWP with outriggers, what must be placed under the outrigger feet on soft ground?
- Nothing — outriggers work on any surface
- Bricks stacked to the required height
- Spreader plates or timber mats of adequate size to distribute the load (Correct answer)
- Cardboard to keep the outrigger feet clean
Correct answer: Spreader plates or timber mats of adequate size to distribute the load
On soft or uneven ground, properly sized spreader plates or timber mats must be placed under outrigger feet to distribute the point load over a wider area. This prevents the outriggers from sinking, which could cause the machine to become unstable or overturn.
Question 3: What should an operator do if they notice the MEWP making unusual noises or vibrations during operation?
- Continue working but report it at the end of the day
- Immediately stop operations, lower the platform, and report the issue (Correct answer)
- Increase speed to finish the task quickly
- Ask a colleague to listen and give their opinion
Correct answer: Immediately stop operations, lower the platform, and report the issue
Any unusual noises, vibrations, or changes in machine behaviour could indicate a mechanical or hydraulic fault. The operator must immediately cease operations, lower the platform safely, and report the issue. Continuing could lead to a catastrophic failure at height.
Question 4: Is it permissible to tie off or anchor a MEWP platform to a structure such as scaffolding or a building?
- Yes, for extra stability
- Yes, if the structure can bear the load
- No, this is prohibited as it can cause the MEWP to overturn (Correct answer)
- Yes, but only in high winds
Correct answer: No, this is prohibited as it can cause the MEWP to overturn
Tying a MEWP platform to a fixed structure is strictly prohibited. If the MEWP moves or the boom articulates, the restraint creates an unbalanced force that can cause the machine to overturn. The MEWP must remain free-standing at all times.
Question 5: What must an operator do before operating a MEWP near a public area or pedestrian route?
- Nothing — the MEWP is self-contained and safe
- Ensure the work area is barricaded, signed, and a banksman is positioned if needed (Correct answer)
- Sound the horn three times as a warning
- Wear a high-visibility vest only
Correct answer: Ensure the work area is barricaded, signed, and a banksman is positioned if needed
Before operating near public areas, the work zone must be barricaded with barriers and warning signs, and a banksman or signaller may be needed to control pedestrian and vehicle movements. This prevents members of the public from entering the danger zone beneath the platform.
Question 6: When multiple MEWPs are operating in the same area, what is the key safety consideration?
- They should all be the same model for consistency
- Adequate separation distances must be maintained to prevent booms colliding (Correct answer)
- Only one operator should control all machines
- They must all face the same direction
Correct answer: Adequate separation distances must be maintained to prevent booms colliding
When multiple MEWPs operate in close proximity, adequate separation distances must be maintained and coordinated to prevent boom or platform collisions. A site-specific method statement should address sequencing and communication between operators.
IPAF Safe Operating Procedures 2
What is the purpose of the dead man's control (hold-to-run) on a MEWP?