HAVS assessments: hand-arm vibration, printed with the RAMS.
Daily vibration exposure for each role on the job, in points and A(8), under the Control of Vibration at Work Regulations 2005.
What a HAVS risk assessment is
The Control of Vibration at Work Regulations 2005 require an employer to assess the risk to anyone whose work exposes them to vibration, and to record the significant findings. For hand-arm vibration, that means each worker's tools and trigger time, their daily exposure, and the controls that keep it down.
Tools and trigger time
Tools are picked from a list of 42 typical in-use values from HSE's hand-arm vibration calculator. Where a tool's own figure is known, it can be entered instead. Trigger time is entered in hours and minutes.
Daily exposure: points, A(8), action and limit values
The day is set against the exposure action value of 100 points (2.5 m/s² A(8)) and the exposure limit value of 400 points (5.0 m/s²), with the time each tool takes to reach each one. The duties at that level print with the result.
Each role prints on its own page at the back of the RAMS, with the workings shown.
365 pointsAbove the action value
A groundworker's day: 365 points, A(8) 4.8 m/s², above the action value and below the limit value.
Health surveillance
Health surveillance is required where workers are likely to be exposed at or above the action value, or where the assessment shows a risk to their health. The result says when that applies.
Working it out by hand
The same sums, free and without an account, are on the HAVS calculator, and the method is in how to calculate HAVS exposure.