Control of Vibration at Work Regulations 2005 — Hand-Arm Vibration and Whole-Body Vibration Compliance

The Control of Vibration at Work Regulations 2005 implement the EU Physical Agents (Vibration) Directive and place legal duties on employers to eliminate or reduce the risks to workers from hand-arm vibration (HAV) and whole-body vibration (WBV). For cleaning and maintenance contractors, HAV is a live compliance issue — operatives using pressure washers, angle grinders, disc cutters, needle guns and other vibrating hand-held tools for sustained periods are at risk of developing Hand-Arm Vibration Syndrome (HAVS), a permanent and progressive industrial disease for which there is no cure. HSE actively enforces the Vibration Regulations and prosecutions have resulted in significant fines and personal injury claims against employers who failed to manage HAV risk.

HAVS is a prescribed industrial disease under the Industrial Injuries Disablement Benefit scheme. Workers who develop HAVS as a result of employer negligence can bring personal injury claims. The financial and reputational risk to employers of unmanaged HAV exposure is significant.

Hand-Arm Vibration Syndrome — what it is

HAVS covers a range of conditions caused by regular and frequent exposure to hand-arm vibration from vibrating tools and equipment. The main components are:

Vibration White Finger (VWF) — blanching of the fingers caused by damage to blood vessels. Fingers turn white in cold conditions and are painful on rewarming. In advanced cases fingers may be permanently affected.
Sensorineural damage — tingling, numbness and loss of sensation in the fingers and hands. Workers lose fine motor control and the ability to feel hot and cold surfaces.
Musculoskeletal damage — damage to muscles, joints, tendons and bones of the hands, wrists and arms from sustained vibration exposure.

HAVS develops gradually over years of exposure. Early symptoms — tingling and numbness after tool use — are often ignored. By the time symptoms are obvious and persistent, significant permanent damage has already occurred. Early identification through health surveillance is the only way to catch HAVS before it becomes disabling.

The regulatory exposure limits

The Vibration Regulations set two key values for hand-arm vibration, expressed as a daily vibration exposure value A(8) in metres per second squared (m/s²):

Exposure Action Value (EAV) — 2.5 m/s² — at or above this level, employers must introduce a programme of controls to reduce exposure. Health surveillance must be provided.
Exposure Limit Value (ELV) — 5 m/s² — this is the absolute maximum daily exposure permitted. Employers must not allow workers to exceed the ELV. Where the ELV is exceeded, immediate action is required to bring exposure below the limit.

The A(8) value is calculated from the vibration magnitude of the tool (measured in m/s²) and the daily trigger time — the actual time the operative's hands are in contact with the vibrating tool. Trigger time is not the same as shift time. An operative using a pressure washer lance for 4 hours of an 8-hour shift has a trigger time of 4 hours.

Pressure washers and HAV — the specific risk

Cold water pressure washers produce relatively low vibration at the lance — the water pressure rather than mechanical vibration drives the cleaning action. However, hot water pressure washers with diesel burners, high-flow machines and machines with trigger guns that require sustained grip force generate higher vibration levels. More significantly, operatives who use pressure washers for sustained periods — fleet washing operatives, external cleaning contractors, car park and hard standing cleaners — may accumulate significant trigger time across a working week.

The combination of pressure washing with other vibrating tools — angle grinders for surface preparation, needle guns for rust removal, disc cutters for joint raking before pressure washing — can push daily A(8) values above the EAV even where no single tool appears problematic in isolation. A HAV risk assessment must consider the total daily vibration dose from all tools used, not each tool in isolation.

The employer's duties under the Vibration Regulations

Assess the risk — carry out a suitable and sufficient assessment of HAV risk for all work involving vibrating tools. Use HSE's HAV ready reckoner or tool manufacturer vibration data to estimate daily exposure values.
Eliminate or reduce exposure — where the EAV is likely to be reached or exceeded, introduce a programme of controls. Controls include selecting lower-vibration tools, limiting trigger time through job rotation, maintaining tools in good condition (worn or unbalanced tools vibrate more), and providing anti-vibration gloves where other controls are insufficient.
Health surveillance — provide health surveillance for all workers regularly exposed at or above the EAV. Health surveillance involves a tiered questionnaire and clinical examination system. Records must be kept. Workers with early HAVS symptoms must be referred for occupational health assessment.
Information and training — workers must be informed of the risks from HAV, trained to recognise HAVS symptoms and told how to report symptoms to their employer.

Equipment selection and HAV risk reduction

Tool and equipment selection materially affects HAV exposure. When specifying industrial cleaning equipment for contractor use:

Check manufacturer vibration data — reputable manufacturers publish declared vibration values for their equipment. Lower declared vibration at equivalent performance reduces HAV risk.
Anti-vibration handles and dampened trigger guns reduce vibration transmission to the operator's hands on pressure washing equipment.
Equipment in good mechanical condition vibrates less — worn bearings, unbalanced components and damaged lances increase vibration. Regular maintenance is a HAV control measure.
Trigger locks that allow the operative to release grip pressure during continuous use reduce muscle fatigue and the grip force that amplifies vibration transmission.

Related legislation and compliance

Related sector pages

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V-TUF supplies industrial pressure washers and cleaning equipment to contractors across the UK. Telephone: 01522 787978. Email through the contact page.

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Control of Vibration at Work Regulations 2005 — Hand-Arm Vibration and Whole-Body Vibration Compliance