Control of Vibration at Work Regulations 2005 (SI 2005/1093)

WBV Daily Exposure Calculator

Calculate a worker's daily whole-body vibration exposure for plant operators and vehicle drivers. Choose the A(8) method for continuous or regular vibration, or the VDV method for shocks and intermittent vibration. Compare against the legal Exposure Action Value (EAV: 0.5 m/s², 100 points) and Exposure Limit Value (ELV: 1.15 m/s², 529 points).

k-factor already included in input values(default: calculator applies k=1.4 to x and y axes automatically)

Operationx m/s²y m/s²z m/s²HrsMins

x m/s²

y m/s²

z m/s²

Exposure time

A(8) x:0.495 y:0.594★ z:0.283 m/s²pts 141

x m/s²

y m/s²

z m/s²

Exposure time

Enter aw values (m/s²) from site measurement or manufacturer data for each axis. Source: HSE WBV calculator (wbv-2.xls V1.06, March 2006).

z-axis tip: For typical construction plant (excavators, dumpers, rollers) the horizontal axes (x, y) are usually dominant. You can often leave z blank — the calculator uses the highest-contributing axis automatically.

Daily exposure — A(8)

0.594m/s² A(8)

141exposure points (y-axis)

Above action value (EAV). Control measures required. Health surveillance needed.

·Risk assessment required.
·Introduce engineering controls — seat suspension, smoother routes, reduced speed.
·Limit daily exposure time and rotate workers where possible.
·Establish health surveillance for exposed workers.
·Provide information and training.

0EAV 100ELV 529

Axis totals

x-axis0.495 m/s²

y-axis ★0.594 m/s²

z-axis0.283 m/s²

Threshold	m/s² A(8)	Points
EAV	0.5	100
ELV	1.15	529

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