The main four causes of crane accidents are contact with power lines, overturns, falls, and mechanical failure.
What are the most common types of crane accidents?
OSHA’s analysis of crane accidents identified the major causes of crane accidents as:
- boom or crane contact with energized power lines (nearly 45% of the cases)
- under the hook lifting device.
- overturned cranes.
- dropped loads.
- boom collapse.
- crushing by the counter weight.
- outrigger use, falls and rigging failures.
What are the most common types of crane accidents quizlet?
OSHA has identified the major causes of crane accidents to be boom or crane contact with energized power lines (nearly 45% of the cases); overturned cranes; dropped loads; boom collapse; crushing by the counter weight; outrigger use; falls; and rigging failures.
What is the most common cause of crane fatalities?
The most common cause of fatalities is workers or bystanders who are struck by an object that falls from the cranes. Other causes include being run over by a crane, falling from a crane, and electrocution.
Which of the following is the most dangerous factor among crane accidents?
Contact with overhead power lines – Electrocution from contact with overhead power lines is a leading cause of crane related accidents. Both the crane operator and workers in the crane basket should be aware of the placement of power lines surrounding the worksite.
What is the world’s largest crane?
The Liebherr LTM 11200-9.1, built by the German company Liebherr Group, is the most powerful mobile crane ever built. It also has the longest telescopic boom in the world, which extends fully to 100 meters. It’s set on a double cab truck and can lift 1200 metric tons – that’s nearly 700 automobiles.
How common are crane accidents?
Understanding the Risks While Working With Cranes
Since 2011, more than 40 crane-related deaths have occurred each year on job sites around the country.
What must be done before operating a crane?
Make sure the crane is suitable to lift and travel the load. … Visually inspect the crane before use. Make sure all loose materials, parts, blocking and packing have been removed from the load before lifting. Remove any slack from the sling and hoisting ropes before lifting the load.
Who can operate a crane?
Operators of most cranes above 2,000 lb. capacity when used in construction will need to be either certified by an accredited crane operator testing organization, such as the National Commission for the Certification of Crane Operators (NCCCO), or qualified through an audited employer program [§ 1926.1427(a)].
Which circuit interrupts most effective?
Which one of the following circuit interrupts is most effective at preventing major shocks? GFCI is the right answer because others cannot shut down electricity immediately.
How many people die a year from cranes?
The revised average is 42 deaths per year, with 18 multiple death incidents involving 40 deaths. Four main types of cranes have been associated with crane-related fatalities. Of the 610 fatal crane incidents, only 375 could be identified from the record as to type of crane.
How often do crane operators die?
From 2011 to 2017, the Census of Fatal Occupational Injuries (CFOI) reported 297 total crane-related deaths, an average of 42 per year over this 7-year period.
Is being a crane operator dangerous?
Crane operators face great risk of catastrophic injury. And even though crane accidents aren’t always caused by negligence, more often than not, they are preventable. While workers face many dangers on construction sites, crane operators are often at risk for catastrophic injuries.
How can we prevent crane accidents?
Make sure the crane is not carrying a load which is more than its capacity. Under US standards for mobile cranes, the load should not be more than 75 percent of the tipping weight. 6. Install fences around the construction site to prevent outsiders from going near the crane.
Which of these injuries could be caused by a flying object?
Flying objects can cause injuries such as cuts, abrasions, concussions, or blindness. Flying objects are a major concern when workers are working with power tools, pushing/pulling loads, or under scaffolds, or work is being performed overhead.
Why do cranes fall?
Sure, high winds and sudden storms have been known to tip crane booms, but high winds can also create side loading of the crane boom, another reason for collapse. … Cranes are designed to handle their highest wind loads in their built and secured state.