Do you forgot turn off the engine of excavator

Any accident foreseen in this frame?

With a hydraulic excavator, an operator worker is leveling the earths that have been carried over there by a dump truck. Now that the driver of the dump truck calls him, he stops the work and steps down from the operator's seat.

Now what accident do you anticipate from this picture? 

This is the accident resulted!

The operator wore a windproof jacket, as it was in the cold season. When he was getting off, a fastening string got caught with the swing control lever, which automatically sent the machine swinging to the left. He was then caught up in between the swinging upper structure and the undercarriage, and killed.

Tips for forestalling similar accidents

1. Take precautions for safety relative to machines such as lowering the bucket to the ground, stopping the engine, pulling out the engine starting switch key, locking the control levers, etc., when leaving the operator's seat of construction vehicle like a hydraulic excavator in this instance.
2. Wear working clothes neatly so that any part of them will not get caught with machine devices like control levers. Be sure to button the sleeves and hems as well as fasten a string.
3. Conduct intensive safety training and education for operators of construction vehicles.

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Accident with lifting rock up by excavator

Any accident foreseen in this frame?

With a hydraulic excavator, an operator worker is digging a gutter for a city water pipe in a 4.1-meter wide road. He has dug out a boulder weighing approx. 200 kg. He is lifting it up with a chain and wire rope fixed to the bucket to load it on a truck, while another worker watches the work nearby.

Now what accident do you anticipate from this picture? 

This is the accident resulted!

The boulder slipped off the chain loop, because it was hung with a single chain and lost equilibrium. The falling boulder hit the worker and killed him.




Tips for forestalling similar accidents
1. Lifting an object with a bucket is not the primary application of hydraulic excavators or the like. If it definitely becomes necessary to use them that way, observe the instructions set forth in the Article 164 (164-2-1 and 2, 164-3) of Regulation on Industrial Safety and Health.
Furthermore determine a set of signals for the work like the one cited above and appoint a signalman in advance, whose instructions the others follow in the work.
2. Never allow anybody to get close to the area at a worksite where he/she might be injured, should a hung object fall off.
3. When slinging work is required, thoroughly examine a sling, slinging work process, etc. beforehand and make sure that the conclusions reached be followed without fail.

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Safety unload mini hydraulic shovel on a truck

Any accident foreseen in this frame?

An operator is trying to load a mini hydraulic shovel on a truck. His unique method of loading in such a case is; first of all he does not use ramps, but instead hang the tip of the undercarriage on the edge of a truck body with the help of the boom and arm, NEXT swing the upper structure to face the rear, then lift up the rear part of the machine again with the help of the boom and arm, and lastly let the machine travel forward to the center of the truck body.

Now what accident do you anticipate from this picture?

This is the accident resulted!

When the operator swung the upper structure to the right, the machine was thrown off the balance and rolled over to the left side. He was thrown out of the operator's seat then and killed under the fallen machine.

Tips for forestalling similar accidents

1. For transportation of construction vehicles, prepare for a special truck as well as use ramps for loading and unloading for the purpose of assuring safety.
2. Appoint a conductor for the work of loading and unloading of construction vehicle from a truck or trailer. All the parties concerned will follow his/her instructions. The conductor will decide the work procedures and method, and then have everyone understood them.
3. Implement safety education and training, in course of which various hazards resulting from the work and their causes are clearly indicated, so that the workers' safety awareness may be enhanced.

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Do not allow any worker to operate construction vehicles without license

Any accident foreseen in this frame?

In a material stock yard, an operator worker A and another worker B are working in pair using a hydraulic excavator. Their job is to paint the surfaces of the I-beams one by one that are stacked up there. First the topside of an I-beam is painted. Then it is turned over with a lateral slinging clamp hung to a hook fixed to the bucket of the hydraulic excavator and the rear side is painted. After painting on both sides, it is stacked up using the same clamp.
The operator A has finished a special training course for operating movable type cranes, but has yet to finish a training course for operating construction vehicles, and so far has little experiences with them.
Now what accident do your anticipate from this picture? 

This is the accident resulted?

The worker B was trying to unfasten the clamp from an I-beam that has finished painting, when the inexperienced operator A moved the bucket control lever by mistake. The bucket hit the worker B hard on the chest and killed him.

Tips for forestalling similar accidents

1. Do not allow any worker to operate construction vehicles without the required license.
2. Post a signalman where a job obliges a worker to enter and there is the danger of bodily injuries to him/her by a possible contact with a construction machine in operation.
3. Do not allow a construction machine to be used for any other purpose than its primary application.

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Take notice in any work on the site construction

Any accident anticipated in this frame? 

A hydraulic excavator is traveling in a sewage treatment plant. Because of the soft ground, steel planks with the size of 1.5 m in width x 6 m in length and 1.6 ton in weight each are used to support the weight of the machine. It has reached the end of the planks and is about to make a right turn. Then a worker steps on one of the planks to cross the ground.

Now what accident do you anticipate from this picture?

This is the accident resulted!

The hydraulic excavator made a pivotal turn to the right, when a broken part of the track shoe assembly hooked the floating edge of the steel plank on which the worker stood. Now that the machine was moving rearward, it further pulled up the plank, tossing him off. He was then prostrated under the heavy plank and crushed.

Tips for forestalling similar accidents

1. Check at a pre-operation inspection or a periodic voluntary inspection if there is any broken part on an undercarriage. If any, take necessary actions for the repair.
2. Level the ground before placing steel planks to assure they are set as evenly as possible.
3. Provide a separate passage for pedestrians and machines. If that is impractical due to the limited space, post a traffic controller in such a spot, who regulates the traffic, showing a priority.

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Another sittuation of unload mini shovel from the truck

Any accident foreseen in this frame?

An operator worker is about to load a mini excavator on a truck at the construction site of a housing complex. Because ordinary ramps are not available, he uses two plates originally used as concrete formwork. One of them is 17 cm in width x 1.6 m in length in size and the other is 17 cm in width x 1.45 m in length.
Meanwhile another worker is collecting the scattered shreds of construction materials to clean the site.


Now what accident do you anticipate from this picture?



This is the accident resulted!

A moment before the mini hydraulic excavator finished climbing over the edge of the truck, it suddenly lost balance and fell off on the ground on the right side. The operator jumped out of the machine unhurt in time, but the worker was crushed under the fallen machine.


Tips for forestalling similar accidents

1. Choose ramps best suited to construction vehicle, when loading and unloading them on a truck or trailer, and install them securely in the truck/trailer at an angle lower than 15 degrees.
2. Post a conductor for the work, while off-limiting the working area.
3. Determine working procedures as well as method for the work beforehand, and make sure that they are disseminated among those concerned.

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Make out working procedures for machine inspection, maintenance, refueling

Any accident foreseen in this frame?

An operator worker is ready to start digging a U-shaped gutter at the construction site of a park, using a small size hydraulic excavator. It is in the morning, and there comes another worker this way with a polyethylene fuel container. He is supposed to fill the machine with fuel before the day's work.
Unable to start the engine, the operator is waiting for him impatiently in the operator's seat. By the way an overhead acryl plate for protection is missing at the operator's side of the machine, since it had been broken and removed for replacement.


Now what accident do you anticipate from this picture?



This is the accident resulted!

While he was watching him filling fuel, he inadvertently touched the bucket control lever, which let down the bucket. He was caught in between the falling boom and one of the cab guard pillars and killed.


Tips for forestalling similar accidents

1. Should any of the protective devices be removed from construction vehicle, reinstall it immediately and never use them until after it is in place.
2. Make out working procedures for machine inspection, maintenance, refueling, etc. for safety assurance, and see that they are observed without fail.
3. If it cannot be avoided to carry out works under a raised bucket, secure it with support pillars or blocks to ensure safety.
4. Implement education and training for safety in machine inspection, maintenance, refueling, etc.
5. Create an organization responsible for inspection and maintenance that includes voluntary inspection of the machines.

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Have to stop engine completely before repairing

Have to stop engine completely before repairing

Any accident foreseen in this frame?
A pumping tube has been broken on a squeeze type mobile concrete pump. A mechanic is trying to replace it with new one. He has removed the broken tube from within the pump case and is about wash out ready-mixed concrete spilt in the interior.


Now what accident do you foresee occurring in this frame?



This is the accident resulted!
He stuck his head in the interior through an inspection hole at right, when his right hand inadvertently pressed the main switch on the control panel. The roller was then set in motion and he was guillotined.


Tips for forestalling similar accidents

1. Stop the engine completely, when it becomes necessary to put in part of or the whole body in the interior of construction equipment for inspection or maintenance work.
2. For non-routines like inspection, maintenance, repairs, etc., too, prepare for the work procedures for safety in advance and see that they are followed.
3. Implement intensive safety education and training for non-routines such as inspection and repairs.

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Check if the machine will not start all of sudden before switching on the engine

Check if the machine will not start all of sudden before switching on the engine

Any accident foreseen here?

A battery in a dozer shovel (otherwise called a traxcavator) has run down. The operator tries to charge it by connecting it with that of a nearby hydraulic excavator with an electric cable. Another worker standing on the dozer shovel proceeds to starting the engine.

Now what accident do you anticipate from this picture?

This is the accident resulted!

The shift lever of the dozer shovel was in the REAR position. And what is worse, the parking brake had not been applied. Thus when the worker switched on the ignition key, the machine jerked backward. The operator was sandwiched between the two machines and killed.

Tips for forestalling similar accidents

1. An operator of dozer shovels will surely take all precautions for preventing the machines from runaway such as applying the parking brake, when he/she leaves the operator's seat.
2. Check if the machine will not start all of sudden before switching on the engine.
3. Do not allow anybody an access to a construction vehicle in operation and the neighborhood, if and when there is the danger that he/she may be hurt through coming into contact with it.
4. Should a battery of construction vehicle run down while in use under the normal conditions, it should be replaced with new one.

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Check the ground conditions before starting with work

Any accident foreseen here?
After rainfall on the previous day, a bulldozer is engaged in refilling work close to a road shoulder at a dam construction site.
Now what accident do you anticipate from this picture?


This is the accident resulted!
The road shoulder gave in under the weight of the bulldozer and collapsed. It fell off on the lower ground, killing the operator who was thrown under the machine.


Tips for forestalling similar accidents
1. Check the ground conditions before starting with work.
2. Put up a marker showing the edge of the road.
3. Push earth at the right angle to the road shoulder.

[Read More...]