HSE Launches Vibration Calculator

HSE Launches Vibration Calculator


  • Date: Wednesday 23rd October 2019
  • PDF: Download

The Health and Safety Executive (HSE) has created a calculator to help estimate workers’ exposure to hand-arm vibration (HAVS).

The calculator compares workers’ exposures to the levels specified in the Control of Vibration at Work Regulations 2015, as part of a HAVS risk assessment.

Aimed at employers of workers who frequently and regularly use tools or machinery, such as hand-held power tools, hand-guided powered equipment or powered machines which process hand-held materials, the calculator time will estimate:

  • Partial exposure (shown in both m/s2 A(8) and exposure points) for each tool or process, as calculated from the vibration magnitude and the exposure duration
  •  Daily exposure, also m/s2 A(8) and exposure points, as calculated from the partial exposures.

In addition to the partial and total exposure values, the calculator also uses the vibration magnitudes to produce the following values:

  • Exposure points per hour.  The number of exposure points for every hour of exposure time for the individual machine or process
  • Time to reach EAV (exposure action value).  This is the total exposure time required for the individual machine or process, before the EAV (2.5 m/s2 A(8) or 100 points) is reached.
  • Time to reach ELV (exposure limit value).  This  is the total exposure time required for the individual machine or process, before the ELV (5 m/s2 A(8) or 400 points) is reached.

The calculator includes drop-down menu of vibration magnitudes from common tools from the HSE’s HAVS database that can be used to make cautious estimates of exposure before representative in-use data for specific tools is available.

The HSE guidance book L140 Hand-arm vibration has also been simplified and streamlined to provide clear information that will enable employers to make sensible and proportionate decisions about managing risks arising from hand-arm vibration.  However, the HSE points out that the underlying message has not changed.

Source: IOSH Magazine 


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