Problems caused by using cranes are divided into 2 factors.
1. Unsafe conditions It is the cause of about 10% of all accidents. The origin of the cause may be categorized from three elements.
1.1. Machines are in unsafe conditions such as no safety equipment. Incomplete braking system, etc.
1.2. Working area conditions in an unsafe manner, such as working near a slope The condition of the area is unstable, strong, etc.
1.3. The person does not wear personal protective equipment. Dress is not tight, etc.
2. Unsafe Operations (Unsafe acts) account for approximately 88% of all accidents. Which is considered a major cause of accidents. Derived from three components
2.1. Lack of knowledge It is a very serious cause of accidents. Because of the lack of knowledge about work safety
2.2. Risk. The operator has good knowledge of safety but likes to work with risks.
2.3. Incorrect attitude, such as having the feeling of an accident that happened because of bad luck or misfortune
Safe use of cranes
lever position and the gear lever must be in the idle position or stop working before starting the machine
The PTO position must be at the stop position before the vehicle travels.
Work lights should be turned off while working on the road.
There should be a planning meeting before work.
Check whether there are any pipelines buried under the crane stand.
Check the correct lengthening of the crane gantry as it is used.
Adjust the crane level to the horizontal plane. And all sides of the crane leg must be pressed onto the ground All wheels must not float off the ground.
Do not use counterweights or restrain the crane girder while lifting.
Should not lift more than the weight specified in the weight table.