Fire Safety Glossary

An appliance is the general term used to describe all firefighting vehicles operated by UK fire and rescue services, including the standard pumping appliance (fire engine), aerial platforms, rescue tenders, and specialist vehicles such as hazardous materials units.

An assembly point is a pre-designated location outside a building where occupants gather following an evacuation, enabling the fire warden to account for all staff, contractors, and visitors before the fire and rescue service arrives. Assembly points must be clearly signposted, identified in the fire emergency plan, and positioned away from the building and clear of vehicle access routes.

Co-responders are on-call firefighters who receive enhanced first-aid training and are dispatched alongside — or ahead of — the ambulance service to medical emergencies in their local communities. The scheme improves response times in rural areas where ambulance cover may be limited.

An evacuation alert system (EAS) is an electronic system installed in higher-risk residential buildings that enables the fire and rescue service to issue targeted floor-by-floor evacuation alerts, directing residents to evacuate when the stay-put strategy is no longer safe. Required under the Fire Safety (England) Regulations 2022 for all residential buildings above 18 metres, EAS must comply with BS 8629 and be regularly tested and maintained.

A fire drill is a planned practice evacuation of a building conducted to test emergency procedures, familiarise occupants with evacuation routes and assembly points, and assess fire warden performance. Under the Regulatory Reform (Fire Safety) Order 2005 and BS 9999, fire drills should be held at least annually — more frequently for high-risk or high-turnover premises — and outcomes, including evacuation times and any failures, must be recorded.

A fire emergency plan is a documented set of procedures describing how occupants should respond to a fire alarm — including evacuation routes, assembly points, fire warden roles, arrangements for persons needing assistance (PEEPs), and how to call the fire and rescue service. Required under the Regulatory Reform (Fire Safety) Order 2005 and informed by the fire risk assessment, it must be communicated to all staff and reviewed regularly.

Fire safety signage refers to all mandatory signs in buildings communicating fire safety information — including emergency exit signs, fire action notices, fire door keep-shut signs, and fire extinguisher identification signs. Signs must conform to the symbols and colours specified in BS ISO 7010 and the Health and Safety (Safety Signs and Signals) Regulations 1996, and must be kept legible and unobstructed at all times.

A fire warden (also called a fire marshal) is a designated person trained to assist with fire safety procedures in a workplace — including conducting evacuation drills, checking escape routes are clear, accounting for occupants at the assembly point, and supporting the responsible person in maintaining fire safety day-to-day. The Regulatory Reform (Fire Safety) Order 2005 requires the responsible person to appoint a sufficient number of competent, trained fire wardens.

Gaining entry is an initiative in which firefighters use specialist tools and techniques to assist the ambulance service in accessing properties where an unconscious, unresponsive, or vulnerable casualty is suspected to be inside. Firefighters are often able to reach the scene faster than ambulance crews in urban and rural areas.

Hazmat (hazardous materials) refers to chemicals, fuel spillages, biological agents, and other substances capable of causing serious harm to people, property, or the environment. UK fire services deploy specialist hazmat teams and equipment to contain spills, decontaminate casualties, and protect surrounding areas.

An incident is any event requiring attendance by the fire and rescue service, including fires, road traffic collisions, flooding, chemical spills, rescues, and medical emergencies. Incidents are categorised by type and severity to inform resource planning, response standards, and performance reporting.

Means of escape are the designated routes — corridors, stairways, emergency exits, and final exit doors — by which building occupants can evacuate safely in a fire without obstruction. Adequate means of escape must be provided in all non-domestic premises under Approved Document B and the Regulatory Reform (Fire Safety) Order 2005, and must be identified and assessed in the fire risk assessment.

National Resilience is a UK government programme, established in 2003, providing fire and rescue services with specialist capabilities beyond normal local response — including mass decontamination, urban search and rescue, high-volume pumping, and logistics support for major or prolonged incidents.

An on-call firefighter is recruited to live or work within a set distance of a fire station and be available for call-out for a contracted number of hours each week. When paged, they respond to emergencies alongside wholetime colleagues and attend regular training sessions to maintain competence.

A Personal Emergency Evacuation Plan (PEEP) is an individualised plan prepared for a building occupant who may need additional assistance to evacuate safely — including people with mobility impairments, visual or hearing impairments, cognitive disabilities, or temporary injuries. PEEPs identify the person's specific evacuation needs, the assistance and equipment required, the persons who will provide support, and must be reviewed whenever circumstances change.

A primary fire is a fire in a building, vehicle, or outdoor structure — the most serious category used in Home Office fire statistics. Primary fires include all accidental and deliberate fires in occupied or unoccupied buildings, and fires in road vehicles, as distinct from smaller secondary fires.

Resilience, in a fire service context, is the capacity to sustain effective emergency response during major, prolonged, or concurrent incidents without degrading core service provision. It encompasses staffing depth, specialist equipment, mutual aid arrangements between services, and national resilience assets.

A road traffic collision (RTC) is an incident on the public highway involving one or more vehicles. Fire services attend RTCs to make scenes safe, rescue trapped casualties using hydraulic rescue equipment, manage fuel spills, and support ambulance crews with medical intervention.

A secondary fire is a fire classified by the Home Office as generally smaller and lower risk than a primary fire — typically outdoor fires such as grassland, heathland, woodland, or refuse fires. While individually less serious, secondary fires still require attendance and can escalate into major incidents in dry conditions.

A sprinkler system is an active fire suppression system consisting of a network of heat-sensitive sprinkler heads connected to a pressurised water supply. Individual heads activate only in the area of a fire, discharging water directly onto the burning material. Commercial systems are designed to BS EN 12845; residential systems to BS 9251. Sprinklers significantly reduce fire fatalities, injuries, and property loss.

A waking watch is a temporary fire safety measure involving trained personnel patrolling a building continuously to detect fire and alert residents — typically imposed on multi-occupied residential buildings where cladding or passive fire protection defects pose an unacceptable life risk. It is an interim measure pending permanent remediation and can be replaced by a common fire alarm system once BS 5839-1 compliance is confirmed.

A wholetime firefighter is a full-time operational member of the fire service who works a regular shift pattern — typically day shifts and night shifts — and is immediately available to respond to incidents while on duty. Wholetime stations provide 24-hour cover in areas of higher risk or population density.