Table of Contents
Advertisement
Daily vibration exposure (A(8))
2
A(8)≤0.5 m/s
0.5 m/s
2
＜ A(8)≤1.15 m/s
2
1.15 m/s
2
<A(8)
The vibration level can be predicted based on the information in the following table which is used to cal-
culate the daily level of vibration exposure.
Predict the vibration level in the three vibration directions of axes X, Y, and Z. The mean vibration level
should be used under normal operation conditions. Scenario factors from mean vibration level based on
operation by skilled operator and on smooth terrain are excluded. Scenario factors are included to ob-
tain the mean vibration level based on aggressive operation and severe terrain to assess the expected
vibration level.
All vibration values are indicated in m/s
(2) Instructions on mitigating vibration
Machines should be correctly adjusted and maintained to ensure smooth operation. The terrain condi-
tions should be observed. The following instructions will help reduce the whole body vibration level:
Use machines and attachments of the correct types and sizes.
Maintain the machines pursuant to the manufacturer's recommendations.
•
Brake and steering systems
•
Controls, hydraulic system and linkage
•
Tire pressure
Maintain and provide good terrain conditions.
•
Remove any large rocks or obstacles.
•
Fill gutters or holes.
•
Keep the vibration level minimal by adjusting the speed and driving path
Use a driver's seat that satisfies ISO 7096.
•
Adjust the driver's seat and suspension for the weight and the size of the operator.
•
Inspect the suspension and adjusting devices of the driver's seat.
Perform the following maneuvers without using excessive force :
•
Steering
•
Braking
•
Accelerating
•
Gear shifting
Move the attachments smoothly.
Adjust the speed and path of machine to keep the vibration level minimal.
•
Operate the machine so as to avoid obstacles and rough terrain.
•
Decelerate the machine when driving on rough terrain.
Keep the level of vibration minimal when working for a long time or driving for a long distance.
•
Use a machine mounted with suspension system.
•
Use the machine's drive control system (optional).
•
If the machine is not fitted with a drive control system, reduce the speed.
•
Transport the machine when moving between worksites; do not drive the machine to get to
another worksite.
Vibration exposure range
Exposure action value or lower
Exceeding the exposure action
value, but not exceeding the
exposure limit value
Exceeding the exposure limit
value:
2
.
Actions to be taken
When approaching the exposure activity value, reasonable
measures should be taken to minimize exposure to vibration.
The relevant information and opportunities for training on vibra-
tion reduction should be provided to the operator.
It is required to execute certain measures for reducing exposure
to and risks of vibration to the minimum.
The health of an operator who has been exposed to excessive
vibration should be examined.
Immediate action is required to reduce the vibration exposure
level to below the exposure limit value.
1-11
Hide quick links:
Advertisement
Table of Contents
