Table 1: Risk evaluation of the current situation using FMEA.
Failure | Failure type | Risk | Current state | |||
P | S | D | RPN | |||
F1 | Operator does not check the vehicle mirrors warning systems | Work machine crashes while truck or LHD is turning | 4 | 8 | 5 | 160 |
F2 | Lack of control of roof and support in working environment | Roof falling and it threats workers and machines | 4 | 9 | 5 | 180 |
F3 | Lack of warning noise in reverse turning in vehicles | Risk of crushing of workers in the loading area | 4 | 8 | 6 | 192 |
F4 | The operator does not lower the moving equipment of the machine to the ground when machine stops | Fall down of moving equipment and accident risk | 5 | 8 | 4 | 160 |
F5 | Failure in gallery slopes | Risk of overturning of vehicles | 5 | 8 | 6 | 240 |
F6 | Insufficient gallery widths | Crash of vehicles to the side walls of the gallery and risk of injury to the operator and workers | 5 | 8 | 5 | 200 |
F7 | Lack of warning signs and reflective signs on galleries | Vehicles crash to the side wall of the gallery | 6 | 6 | 5 | 180 |
F8 | Lack of lighting | Vehicles crash to the side wall of the gallery and workers | 6 | 7 | 4 | 168 |
F9 | Blind spot | Risk of crushing workers in reverse turning | 7 | 8 | 9 | 504 |
F10 | Dust | Occupational illness risk and vision disruption due to dust | 7 | 7 | 5 | 245 |
F11 | Lack of maintenance | Risk of accident due to unexpected breakdown of vehicles | 6 | 8 | 8 | 384 |
F12 | Rock particles | Risks to be caused by rock particles in production | 6 | 7 | 4 | 168 |