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Noise and Vibration
Noise and Vibration
Information on vibration
Information on vibration
This part describes the vibration data of the machine, and
methods of calculating the vibration level.
The vibration level of the machine varies according to any
of the following conditions:
·
Driving habits of the operator (i.e. aggressive/mild
temperament when driving)
·
Quality of seat and suspension
·
Type of machine, attachments, and conditions of
machine
·
Conditions of work site, working environment, ground
surface conditions, and weather
Vibration also varies according to the duration of operation.
Accordingly, it is not possible to precisely calculate the
vibration level of the machine; however, it is possible to
predict the level.
Physical Agents Directive 2002/44/ECdefines the exposure
action value as 0.5m/s
as 1.15 m/s
2
. If the predicted value is near the exposure
action value or exposure limit value, the predicted value
should be assumed to exceed the two latter values, and
necessary action should be taken.
As regards the actions to take according to vibrations, refer
to the following table :
Daily vibration exposure (A(8))
2
A(8) ≤0.5 m/s
2
＜ A(8) ≤1.15 m/s
2
0.5 m/s
2
< A(8)
1.15 m/s
2
, and the exposure limit value
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:
1-13
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
vibration 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.
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