HSE Launch Motor Vehicle Paint Spraying Campaign  

Health risks from paint spraying

Paint spraying, especially where chemicals known as isocyanates are involved, poses serious health risks like asthma and dermatitis.

The HSE recently launched a campaign of 1000 inspections targeted at motor vehicle repair businesses and the control of exposure risks during paint spraying.

The inspections will be looking to establish whether those businesses have suitable controls in place and whether they are confirming the effectiveness of those controls by arranging relevant health surveillance for relevant employees.

Isocyanates, found in vehicle paints, pose serious health risks through inhalation and skin contact; exposure can occur during spraying, mixing, curing, and sanding.

Key risks include:

• Respiratory hazards: inhaling paint mist can cause asthma and other lung conditions.
• Skin exposure: direct contact may lead to dermatitis and allergic reactions.
• Workplace contamination: improper handling can expose others to harmful substances.

Control and safe working practices

To protect workers, suitable safety measures should be followed, e.g.:

• Mix and clean paint in designated, well-ventilated areas.
• Use spray booths under negative pressure to contain mist.
• Keep paint lids closed to reduce vapours.
• Maintain spray and ventilation systems; inspect LEV (local exhaust ventilation).
• Wear and frequently replace PPE (Personal Protective Equipment) and RPE (Respiratory Protective Equipment) (disposable overalls, nitrile gloves).
• Ensure safe breathing air in spray booths.
• Dispose of hazardous waste in labelled, sealed bins.
• Safe clearance procedures: clearly displaying booth clearance times and ensuring that workers do not enter booths without RPE or remove RPE in the booth until the clearance time has fully elapsed

Correct RPE is a key factor. To minimise risks:

• Air-fed breathing apparatus (BA) must be worn at all times when spraying in spray booths, during gun cleaning, and throughout clearance periods.
• Proper fit testing is essential where tight-fitting RPE is used, as facial hair can affect the seal and reduce protection.
• RPE should only be removed in a safe air zone, following a strict protocol when exiting spray areas.
• Regular maintenance of breathing apparatus is required to ensure effectiveness.
• Compressed air supplies should be checked at three-month intervals for contaminants like oil, water, and carbon monoxide. However, the frequency can be extended based on a risk assessment, taking into consideration servicing and maintenance arrangements.
• Additional PPE and RPE should be worn, including disposable coveralls and gloves to prevent skin exposure.

If you have any questions or would like support with managing issues at your workplace, please speak to your usual contact or get in touch using the form below.