Dangerous Substances and Explosive Atmospheres Regulations 2002

Royal Coat of Arms of the United Kingdom (variant 1, 1952-2022)

Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) are a set of regulations in the United Kingdom aimed at protecting workers and others from the risks of fires, explosions, and similar events arising from dangerous substances in the workplace. The regulations implement the requirements of the European Union's ATEX directives.

Overview

The Dangerous Substances and Explosive Atmospheres Regulations 2002 were introduced to ensure that risks from dangerous substances are properly controlled. These regulations apply to most workplaces where dangerous substances are present, including factories, warehouses, and construction sites.

Key Provisions

DSEAR requires employers to:

• Assess the risks of fires and explosions that may be caused by dangerous substances.
• Put measures in place to eliminate or reduce risks as far as is reasonably practicable.
• Provide equipment and procedures to deal with accidents and emergencies.
• Ensure that employees are properly informed and trained about the risks and the measures in place to control them.
• Classify areas where explosive atmospheres may occur into zones and mark them with appropriate signs.

Dangerous Substances

Dangerous substances covered by DSEAR include:

• Flammable liquids
• Gases
• Dusts
• Substances that can become explosive when mixed with air

Risk Assessment

Employers must carry out a risk assessment to identify the potential for dangerous substances to cause harm. This involves:

• Identifying dangerous substances in the workplace.
• Evaluating the risks associated with these substances.
• Implementing control measures to reduce the risks.

Control Measures

Control measures may include:

• Substitution of less dangerous substances.
• Engineering controls such as ventilation systems.
• Safe storage and handling procedures.
• Use of explosion-proof equipment.

Zoning and Signage

Areas where explosive atmospheres may occur must be classified into zones based on the frequency and duration of the occurrence of explosive atmospheres. These zones must be marked with appropriate signs to warn workers of the potential risks.

Training and Information

Employers must provide information, instruction, and training to employees about the risks associated with dangerous substances and the measures in place to control these risks. This includes:

• The nature of the substances and the risks they pose.
• The control measures in place.
• Emergency procedures.

Enforcement

The Health and Safety Executive (HSE) is responsible for enforcing DSEAR. Employers who fail to comply with the regulations may face enforcement action, including fines and prosecution.

See Also

• Health and Safety at Work etc. Act 1974
• Control of Substances Hazardous to Health Regulations 2002
• ATEX directive
• Health and Safety Executive