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Hydraulic Boom Cranes

Overview. IntroductionCrane Design Considerations Cranes and Safety ConcernsOSHA RegulationsCrane SignalsCase Study. Introduction. A crane is a mechanical lifting device equipped with hoists, wire ropes and sheaves that can be used both to lift and lower materials and to move them horizontallyCranes are thought to have originated in the late 6th century BC as a tool for the Ancient Greeks.

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Hydraulic Boom Cranes

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    1. Hydraulic Boom Cranes A Review of the History and Ongoing Safety Concerns of the Crane

    2. Overview Introduction Crane Design Considerations Cranes and Safety Concerns OSHA Regulations Crane Signals Case Study

    3. Introduction A crane is a mechanical lifting device equipped with hoists, wire ropes and sheaves that can be used both to lift and lower materials and to move them horizontally Cranes are thought to have originated in the late 6th century BC as a tool for the Ancient Greeks

    4. Crane Design Considerations The first is that the crane must be able to lift a load of a specified weight The second is that the crane must remain stable and not topple over when the load is lifted and moved to another location. Next slide shows a schedule of loads for a typical hydraulic boom crane. Known as a capacity chart, it provides the capacity in lbs that can be lifted at various angles.

    6. Cranes & Safety Concerns Due to the high risk nature of working with cranes, safety measures must be implemented to lower the propensity for accidents. Some of the avoidable accidents include: Electrocution Tip Over/Rigging Failure Assembly/Dismantling Boom Buckling/Collapse Dropped Load OSHA Regulations cover cranes in Subpart N of the text.

    7. Crane Related Accident Statistics

    8. Accident Cause Distribution

    9. OSHA Regulations Employer shall comply with manufacturer specs Rated capacities, operating speeds, hazard warnings shall be posted on all equipment Wire rope shall be inspected thoroughly and taken out of service after failed inspection Fire extinguisher of 5BC rating required in cab

    10. OSHA Regulations 10ft minimum clearing distance from power lines Placed uniformly level within 1% of level ground Visual Aid shall be provided when necessary Employees shall be kept clear of loads about to be lifted or suspended loads

    11. Crane Signals

    12. Case Study Company A sold a hydraulic boom crane to Company B as a 95’ boom crane. In reality, the boom was 85’. The crane was stressed and fatigued through the use of an incorrect load chart by Company A. The boom later failed and killed a Company B worker. http://www.craneoperator.com/SERVICES/Inspections-Leading-To-Accidents/01-Case-Study-1.htm

    13. Typical Accidents

    14. Safety is a way of LIFE Practice Safe Crane Operations

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