Preventing Tip-Overs
A careful inspection of the worksite before using the lift is key to preventing tip-overs. Being aware of obstacles and hazards such as curbs, unprotected edges, slopes, holes, and uneven or soft ground helps you avoid them when operating an aerial or scissor lift.
Avoid Tip-Overs
Stabilize the Lift: Always ensure the lift is placed on a stable, level surface. Use outriggers or stabilizers when necessary to prevent the lift from tipping. Ensure brakes are set when outriggers are used. Use wheel chocks on sloped surfaces when it is safe to do so. Set up work area warnings, such as cones and signs, when necessary to warn others.
Follow Weight Limits: Never exceed the manufacturer’s maximum load capacity for the lift. This includes the combined weight of the workers, tools, and materials on the platform. Distribute the load evenly across the platform to maintain balance. Do not use the aerial lift as a crane or to hoist materials. Do not carry objects larger than the platform.
Operate the Lift Safely: Do not operate lower-level controls unless permission is obtained from the worker(s) in the lift (except in emergencies). Never exceed the vertical or horizontal reach limits of the lift. Never override hydraulic, mechanical, or electrical safety devices.
Move the Lift Safely: Before moving an aerial lift, be sure to properly cradle the boom(s) (lower and secure the boom) and stow the outriggers. Do not drive with the scissor lift platform raised (unless the manufacturer’s instructions allow this). Check the manufacturer's guidelines to confirm how steep of an incline the lift can safely travel on. When driving on a slope, always keep the counterweight facing uphill. Follow the manufacturer's instructions for turning on slopes. Check the load capacity for the surface(s) you plan to travel on to prevent a collapse.
Workers must stay in the lift while it is moving, provided it is safe to do so and in accordance with the manufacturer's guidelines for the specific lift model. Workers must be alerted before the lift begins to move.
Avoid Windy Conditions: Do not operate the lift in high winds above those recommended by the manufacturer (generally over 25-28 mph) or severe weather, as strong gusts can cause the lift to tip over. Note: be aware that wind speeds can be different at the top of a lift versus ground level.
Knowledge Check Choose the best answer for the question.
4-3. Which step should be taken to ensure safe operation when moving a lift?
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