1. Safety–Training
Media Dev
2010-교육미디어-1019
Grave Accident Case in Manufacturing Sector
Death of Operator Hit by the Basket Installed at the Boom of High Working Vehicle

2. Contents Overview Detail Cause Prevention I II III IV
Death of Operator Hit by the Basket Installed at the Boom of High Working Vehicle
Contents
Overview I
Detail II
Cause
III
Prevention IV
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3. Overview of Accident When: Mar. 25, 2008, 16:10Ⅰ
When: Mar. 25, 2008, 16:10
Where: No Vessel located to the east of Dock 2, XX Seashore and Shipbuilding Company
Who: An operator and a painter on the basket of the high working vehicle, papering the side shell of the ship
How: The two workers were operating the control device after the boom of the high working vehicle’s boom was caught at the rubber fender at the dock
Why: The basket suddenly sprung out, shook, and hit a worker in the basket on the chest. The worker died during medical treatment.

4. Details of Accident Process of Accident Ⅱ Prepare papering Movement
Two workers got on the high working vehicle
Movement
Boom length adjustment
Basket contacts side shell
Painting
Papering completed
Papering work
Accident

5. Details of Accident Ⅱ
On the side of No. 2 Dock where the high working vehicle was used to do pre-treatment on the day of the accident, the distance from the quay to the vessel was 1.72m, which was too great for work unless the basket (LxBxH:1,800x900x1,140mm) of the high working vehicle is adjusted toward the side shell in advance.
The two workers on the basket both hung their safety belts at the handrail while working. The painter removed defective parts of the side shell with a broom wrapped by paper.
The operator moved the vehicle and controlled the boom.

6. Details of Accident Ⅱ
At 16:10, the connection of the boom (joint) of the high working vehicle was caught at the rubber fender (rubber impact absorber attached on the dock to protect the side shell) installed at 13.7m above the dock floor and could not move. While the operator was maneuvering the control lever abruptly, the boom sprung from the rubber fender and shook wildly. Due to the impact, the operator’s upper body protruded outside the basket and the painter was hit on the chest by the handrail.
The victim’s ribs broke, causing pressure to his heart; according to the doctor’s death certificate. The victim was standing at a person’s height (147cm) when the handrail hit his chest.

7. Details of Accident High working vehicle specificationsⅡ
High working vehicle specifications
Type and working height: JLG860SJ, 28m
Height, width and length: 3.02x2.49x12.19m
Horizontal distance: 22.86m
Vehicle load and capacity: 16.5 tons, 230kg
Structure of rubber fender
The rubber fender installed on the dock quay is a normal rubber product intended to protect vessels (size: 300mm x300mmx6m (w x h x l))
It is fixed at 13.4m above the dock floor (bottom of the rubber fender). There was a scratch made when the boom was caught in the bottom.

8. Details of Accident Ⅱ
Accident site

9. Details of Accident High working vehicle and rubber fenderⅡ
High working vehicle and rubber fender
Boom joint and rubber fender caught here

10. Details of Accident Ⅱ
Boom joint caught at the rubber fender

11. Details of Accident Ⅱ
Basket of the high working vehicle

12. Cause of Accident Inappropriate operation of high working vehicleⅢ
Inappropriate operation of high working vehicle
The boom joint caught on the rubber fender should have been lowered to safely remove it from the rubber fender. However, the boom was laterally moved and the basket was shaken, which caused the accident.
Failure to assign a supervisor
A supervisor should be present and a work plan should be followed while work is done at a place that is 10m or higher. However, the supervisor was working at another place on the dock.

13. Prevention of AccidentⅣ
Establish safe operation rules for the operator of a high working vehicle
When a high working vehicle is used or the boom is extended at a narrow place, the operator receive regular training in considering the location of the boom to prevent collision.
Assign supervisor to necessary tasks
When a high working vehicle is to be used at 10m or higher and a narrow gap with a protrusion such as the rubber fender, a supervisor should be assigned in advance to control the work according to the work plan.

14. Prevention of AccidentⅣ
Safety rules for operating high working vehicles
A work plan should be created before using a high working vehicle.
The work plan and instructions to follow it should be communicated to the workers involved.
The workers should wear safety headgear and belts.
In poor weather, especially high winds, stop work.
Do not use the boom outside its purpose, such as lifting loads.
Use the device’s lifting part only within its capacity.

15. Prevention of AccidentⅣ
Safety rules for operating the high working vehicle
As soon as you go onto the work stage, hang the safety belt hook at the safety parapet.
Capacity should not be exceeded on the work stage.
Stay away from the boom or sites other than the stage.
Place a cover to prevent the worker from contacting the control lever during operation.
Take measures to prevent an electric shock when working near power lines.
A safety fence should be installed to control access within the operation radius.

16. Thank You!