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 most dangerous factor among crane accidents?

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.

What are the main causes 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.
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Which of the following are the four major causes of crane accidents?

The main four causes of crane accidents are contact with power lines, overturns, falls, and mechanical failure.

Is the most common cause of deaths involving cranes?

According to this data, the most common causes of crane-related fatalities included: 112 deaths were caused by the victims being struck by equipment or an object.

The most common causes of injuries are:

  • Falling objects.
  • Falls.
  • Transportation incidents.
  • Electrocution.

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How many crane operators die each year?

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.

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 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.

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What affects the amount of weight a crane can lift?

For example, if the boom of the crane is extended to 250 feet and the radius (the distance from the center of the load to the center of the crane) is 180 feet, the max load weight drops considerably. The shorter the lift, the more weight can be handled. Transportation of the cranes also needs to be considered.

Which one of the following is not considered to be a crane related hazard?

OSHA’s analysis of crane accidents in general industry and construction identified an average of _____ fatalities per year. Which one of the following is NOT considered to be a crane-related hazard? According to OSHA, hoisting personnel on a platform is NOT considered to be a crane-related hazard.

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.

Who should inspect cranes?

OSHA regulations only require that such equipment be inspected during initial use and annually thereafter by a “competent person”, or by a government or private agency recognized by the U.S. Department of Labor. The owner must, also, maintain a record of these inspections.

What percentage of construction fatalities are caused by crane accidents?

Another 30 percent of worker deaths involving cranes occurred to workers in construction and extraction occupations. The worker was operating a crane at the time of the fatal injury in 22 percent of cases. The worker was engaged in construction, assembling, and dismantling activities in another 22 percent of cases.

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What is the rated capacity of a crane?

Rated Capacity is the maximum gross load which may be applied to the crane or hoist or lifting attachment while in a particular working configuration and under a particular condition of use.

What part of the crane is used to lift and lower the load?

Hoist – A mechanical unit that is used for lifting and lowering a load via a hook or lifting attachment.

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