What is the single greatest cause of fatal accidents involving mobile access towers?

Falls from height are the single greatest cause of fatal and serious injuries involving mobile access towers. This is why guardrails, correct assembly and proper training are critical.

What is the main risk to people working below a mobile access tower?

Falling objects such as tools, materials or dislodged components pose a significant risk to people at ground level. Toeboards, enclosed platforms and exclusion zones help to mitigate this hazard.

Being struck by falling objects (tools, materials or components)

Suffering hearing damage from the noise of the work above

Tripping over the castors at the base of the tower

Exposure to fumes generated by the work on the platform

What is the primary hazard when using a mobile access tower near overhead power lines?

Electrocution is the primary hazard. High-voltage electricity can arc across an air gap and does not require direct contact with the conductor. Aluminium towers are excellent conductors, making this extremely dangerous.

The cables can fall and strike the tower platform from above

Electrocution — electricity can arc across gaps and does not require direct contact

The radio interference from the cables can disorientate the operative

The magnetic field from the cables can demagnetise hand tools

Free mock exam

Hazards — PASMA Towers for Users Practice

Free topic-focused mock exam: all 29 questions on Hazards, drawn from the wider PASMA Towers for Users bank. 35-minute timer, 70% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.

Questions: 29
Time limit: 35 min
Pass mark: 70% · 21/29
Question bank: 29

Free, no sign-up. Retake as many times as you like — the questions are reshuffled, with the answer order changed.

Sample questions

01What is the single greatest cause of fatal accidents involving mobile access towers?
- AFalls from height
- BFalling objects
- CElectrocution
- DManual handling injuries
Why: Falls from height are the single greatest cause of fatal and serious injuries involving mobile access towers. This is why guardrails, correct assembly and proper training are critical.
02What is the main risk to people working below a mobile access tower?
- ABeing struck by falling objects (tools, materials or components)
- BSuffering hearing damage from the noise of the work above
- CExposure to fumes generated by the work on the platform
- DTripping over the castors at the base of the tower
Why: Falling objects such as tools, materials or dislodged components pose a significant risk to people at ground level. Toeboards, enclosed platforms and exclusion zones help to mitigate this hazard.
03What is the primary hazard when using a mobile access tower near overhead power lines?
- AThe cables can fall and strike the tower platform from above
- BThe radio interference from the cables can disorientate the operative
- CThe magnetic field from the cables can demagnetise hand tools
- DElectrocution — electricity can arc across gaps and does not require direct contact
Why: Electrocution is the primary hazard. High-voltage electricity can arc across an air gap and does not require direct contact with the conductor. Aluminium towers are excellent conductors, making this extremely dangerous.

Common questions

Is the Hazards mock exam free?

Yes — 100% free, no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.

Can I retake the mock exam?

Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.

Does this count towards the real qualification?

No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.