Toolbox Talk

Mast Climbing Work Platform Safety

TBT-ACC-019

Mast climbing work platforms (MCWPs) provide an efficient alternative to traditional scaffolding for repetitive tasks at height such as bricklaying and cladding. However, they present unique risks including platform overloading, mast instability, and falls during boarding. Operatives must understand safe operating procedures before using these platforms. This talk covers the key hazards and controls for MCWP use on UK construction sites.

Key Hazards
Platform collapse from overloading beyond safe working load
Falls from the platform due to missing guardrails
Mast instability caused by inadequate ties to structure
Crushing injuries during platform raising and lowering
Control Measures
  • Ensure the MCWP is erected, altered, and dismantled only by competent trained personnel.
  • Check the safe working load (SWL) is displayed and never exceeded during use.
  • Inspect all guardrails, gates, and toe boards before each shift begins.
  • Verify mast ties are installed at the correct intervals as per the design specification.
  • Use the platform controls only if you have received specific MCWP operator training.
  • Keep the platform surface clear of debris, tools, and excess materials at all times.
  • Ensure emergency lowering procedures are understood by all platform users.
  • Report any unusual noises, vibrations, or movement to the supervisor immediately.
  • Complete a thorough examination under LOLER every six months and after any substantial alteration.
Emergency / Rescue

If the platform becomes stuck or shows signs of structural failure, stop all operations and evacuate. Do not attempt to free the platform. Call the supervisor and specialist contractor. Use emergency lowering only if trained to do so.

Remember
  • Only trained and competent operators may raise or lower the platform
  • Never exceed the safe working load displayed on the platform
  • Check all guardrails and toe boards are secure before each use
  • Mast ties must be installed at the correct spacing per the design
  • Report any unusual sounds, vibrations, or platform drift to your supervisor immediately
  • Emergency lowering procedures must be understood by everyone using the platform
Applicable Legislation: Work at Height Regulations 2005 · LOLER 1998 · PUWER 1998 · BS EN 1495:1998+A2:2009
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