Weather conditions can have an adverse effect on lifting activities and need to be thoroughly considered both during planning and execution of a lift. Special efforts shall be considered to ensure adequate warning is provided to avoid a sudden weather change disrupting a lift in progress. Crane inspections should be scheduled to occur during the different seasons so that it will get an inspection during harsher operating conditions as well as more favorable ones
Crane manufacturers have recommendations concerning the maximum permissible wind speed, or how to derate the crane under windy conditions, since their load charts assume no wind at all. In the absence of manufacturer’s specific advice, all lifts will be postponed if the wind speed meets or exceeds 32Km/h (20 mph) and will not re-commence until a review is complete by the Pipeworx Management Team.
Other issues to consider when faced with windy weather conditions are:
- The geometry and shape of the load.
- The height of the load to be lifted.
- Backward stability.
- Wind from behind the crane.
- Operating a crane between structures.
Extremely cold weather can have a negative effect on lifting operations. Crane manufacturer’s recommendations concerning cold weather lifting restrictions shall be considered if they meet or exceed the following lifting restrictions. This criteria also includes but not limited to; Hydraulic Man-lifts, Boom Trucks, Side Booms, Loaders Forks and Forklifts.
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