Page 154 - IGC BOOK

Basic Vibration Control Measures

• Eliminate or reduce vibration at source
• Interrupt the pathway from source to the receiver
• Limit duration of exposure.

Eliminate or Reduce Vibration at Source

Elimination – Removing the sources of vibration though
automated system to avoid the need to use the equipment.

Substitute – change the vibration source using alternate methods or tools that produces less
vibration, using battery operated drilling machine rather than power operated. However, more
force required with longer usage).

Change work techniques - Change the work methods so that vibrating tools may not be
required.

• Flame cutting instead of percussive metalworking tools.
• Welding instead of riveting.

Maintenance

• Replacement of worn parts and correction of unbalanced equipment can reduce
vibration levels.
• Anti-vibration devices need to be maintained.
• Sharpened tools will reduce the duration of the job and therefore the exposure time.

Interrupt pathway to the receiver

Isolation

Isolation is the reduction of vibration passing from the vibrating machine, tool, or component to
the operator’s hands. This can be achieved by the use of rubber bushes, sleeves and anti-
vibration mounts.

Limit the Duration of Exposure

Limit Exposure - limitation of the duration and magnitude of exposure to vibration by calculating
exposure action value and limit value.

Job Rotation – exposure is shared among several workers so that no one achieves the exposure
action or limit value. Workers provided with appropriate work schedules with adequate rest
periods.

Anti-Vibration Tools

Tools can be designed or mounted in ways that help reduce the vibration level. For example,
using anti-vibration chain saws reduces acceleration levels by a factor of about 10. These types

ENSIGN | Unit IG2 – Element 5 – Physical and Psychological 14
Health