Exposure Points System Explained

Exposure action value (EAV) and exposure limit value (ELV)

What is the exposure action value?

The exposure action value (EAV) is a daily amount of vibration exposure above which employers are required to take action to control exposure. The greater the exposure level, the greater the risk and the more action employers will need to take to reduce the risk. For hand-arm vibration the EAV is a daily exposure of 2.5 m/s2 A(8).

What is the exposure limit value?

The exposure limit value (ELV) is the maximum amount of vibration an employee may be exposed to on any single day. For hand-arm vibration the ELV is a daily exposure of 5 m/s2 A(8). It represents a high risk above which employees should not be exposed.

The Regulations allow a transitional period for the limit value until July 2010. This only applies to work equipment already in use before July 2007. The exposure limit value may be exceeded during the transitional period as long as you have complied with all the other requirements of the Regulations and taken all reasonably practicable actions to reduce exposure as much as you can.

Figure 1: How vibration level and duration affect exposure.

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