Assembly Point
A pre-agreed safe place away from the building where everyone gathers once they have evacuated. It lets fire wardens carry out a roll call and confirm that nobody has been left inside.
UK fire safety reference guide
28 defined terms
Fire Safety Terms and Glossary.
A clear A to Z reference for fire safety terminology used across UK workplaces. Learn the language of fire prevention, safe evacuation, the fire marshal role, extinguisher classes and emergency planning.
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Reference edition
Every fire safety term you need, clearly defined.
From the fire triangle and extinguisher classes to fire doors, PEEPs and assembly points, built for UK learners, trainers and employers.
- 28 essential defined terms
- Organised A to Z for quick reference
- Aligned with the Fire Safety Order and UK practice
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28
Fire safety terms defined
13
Alphabetical sections
RRFSO
2005 aligned terminology
UK
Workplace reference
How to use this glossary
The vocabulary every fire marshal should know.
Fire safety has its own language. Prevention terms such as the fire triangle, class of fire and fire door, evacuation concepts like the assembly point and PEEP, and the legal language around the Fire Safety Order all appear throughout UK fire warden training.
This glossary brings the most important terms together in one place, with clear, plain English definitions aligned to current UK fire safety law and workplace practice.
Use this page as a quick reference while you work through the Fire Marshal Course, review your fire procedures, or brief your team before a fire drill.
Every definition here is used inside our accredited course and across our wider fire safety guides. Scroll below for the full A to Z list.
A to Z glossary
Fire safety definitions
Every essential fire safety term, grouped alphabetically for quick reference.
Letter A
Terms starting with A
Alarm Zone
A defined section of a building covered by part of the fire alarm system. Zoning helps fire marshals and the fire service quickly identify where a detector or call point has been triggered.
Letter C
Terms starting with C
Class of Fire
The way fires are grouped by the fuel involved: Class A (solids), B (flammable liquids), C (gases), D (metals) and F (cooking oils). The class decides which extinguisher is safe to use.
Combustible Material
Anything that can catch light and burn, such as paper, cardboard, packaging, textiles and waste. Keeping it under control and away from ignition sources is a core fire prevention task.
Letter E
Terms starting with E
Emergency Lighting
Battery-backed lighting that switches on automatically if the mains supply fails. It keeps escape routes and exit signs visible so people can leave safely even in smoke or darkness.
Evacuation
The planned, orderly movement of everyone out of a building to a place of safety when the alarm sounds, guided and checked by trained fire wardens.
Letter F
Terms starting with F
Fire Triangle
The three ingredients every fire needs: fuel, heat and oxygen. Remove any one and the fire goes out. This simple model is the principle behind how every extinguisher works.
Fire Door
A self-closing door built to hold back fire and smoke for a rated time, protecting escape routes between areas of a building. It must never be wedged or propped open.
Fire Marshal
A trained member of staff, also known as a fire warden, who helps prevent fires, supports a calm evacuation, sweeps their assigned area and reports back to the responsible person.
Letter G
Terms starting with G
General Fire Precautions
The everyday safety measures a workplace must keep in place under the Fire Safety Order, including escape routes, alarms, extinguishers, signage, staff training and emergency planning.
Letter H
Terms starting with H
Hot Work Permit
A documented control for tasks that produce heat, sparks or flames, such as welding or cutting. It confirms fire risks are managed before, during and after the work, including a fire watch afterwards.
Horizontal Evacuation
Moving people sideways through a fire-resisting barrier into a safer compartment on the same floor. It is often used in hospitals and care homes before any full building evacuation.
Hazard
Anything with the potential to start a fire or help it spread, from faulty wiring and overloaded sockets to stacked packaging near a heat source. Spotting hazards early is central to the warden role.
Letter L
Terms starting with L
Fire Logbook
The central record where alarm tests, drills, equipment checks, training and maintenance are written down. It provides the evidence of compliance that inspectors and insurers expect to see.
Life Safety
The principle that protecting people always comes before protecting property. Every evacuation plan and warden decision is built around getting people out safely first.
Letter M
Terms starting with M
Means of Escape
The route a person can follow from any point in a building to a final exit and a place of safety. It must be kept clear, well signed, well lit and never locked while the building is occupied.
Muster Point
Another name for the assembly point: the agreed spot outside where staff gather and are accounted for after leaving the building.
Letter P
Terms starting with P
PEEP
A Personal Emergency Evacuation Plan: a tailored escape plan for anyone who cannot leave unaided, such as a person with reduced mobility, or a hearing or sight impairment.
Phased Evacuation
A staged strategy used in larger or taller buildings, where the area of greatest risk leaves first and other floors follow on instruction, easing pressure on stairways.
Letter R
Terms starting with R
Responsible Person
The duty holder under the Fire Safety Order, usually the employer, owner or occupier. They must arrange the fire risk assessment and take steps to keep everyone safe from fire.
RRFSO 2005
The Regulatory Reform (Fire Safety) Order 2005, the main fire safety law covering most non-domestic premises in England and Wales. It places duties on the responsible person.
Letter S
Terms starting with S
Smoke Detector
An automatic device that senses smoke at an early stage and triggers the fire alarm, giving everyone the maximum possible time to escape.
Sweep
The check a fire warden makes through their area during an evacuation, encouraging people to leave, checking quiet rooms and toilets, and closing doors behind them where it is safe to do so.
Letter T
Terms starting with T
Fire Tetrahedron
An extension of the fire triangle that adds a fourth element, the chemical chain reaction. It explains how some extinguishers put fires out by breaking that reaction rather than removing fuel, heat or oxygen.
Travel Distance
How far a person must move from any point to reach a safe exit or protected stairway. The fire risk assessment checks this stays within safe limits.
Two-Stage Alarm
An alarm system that can sound an alert signal in some areas and a full evacuate signal in others, supporting phased evacuation in larger premises.
Letter W
Terms starting with W
Fire Warden
The everyday name for a fire marshal: the trained person who supports fire prevention, helps lead people out during an evacuation and reports back to the responsible person.
Wet Riser
A permanently charged vertical water pipe in taller buildings that lets the fire service connect their hoses quickly on upper floors instead of running lines up the stairs.
Fire safety terminology explained in depth
Knowing the correct fire safety vocabulary is more than an academic exercise. It is the difference between a confused team and one that can apply the Regulatory Reform (Fire Safety) Order 2005 confidently in the office, the warehouse or the care home.
The fire triangle: fuel, heat, oxygen
The single most important concept in this glossary is the fire triangle. Every fire needs fuel, heat and oxygen together. Remove any one and the fire cannot continue. Good housekeeping removes the fuel, controlling ignition sources removes the heat, and an extinguisher or fire blanket cuts off the oxygen. Understanding this makes combustible material control and prevention click into place.
Classes of fire and the right extinguisher
A class of fire tells you what is burning, and that decides the safe extinguisher to reach for. Using water on a flammable liquid or electrical fire can be dangerous, which is why fire marshals learn to match the extinguisher to the fuel before acting. Hands-on extinguisher use may need separate practical training.
Means of escape and evacuation
A protected means of escape and a clear assembly point are the backbone of every evacuation. Fire wardens carry out a sweep, support anyone with a PEEP, and confirm the roll call once everyone reaches safety. Fire doors and emergency lighting keep those routes usable when it matters most.
Paperwork that saves lives
The fire risk assessment identifies what could go wrong and how it will be controlled, and it remains the duty of the responsible person. The fire logbook records alarm tests, drills, checks and training. Together they form the evidence that a fire safety inspector and your insurer expect to see.
For the full practical application of these terms, see the fire warden responsibilities guide, or enrol in the Fire Marshal Course to learn every concept in context.
FAQ
Fire safety terminology questions
The three questions we are asked most often about fire safety vocabulary.
What is the difference between a fire marshal and a fire warden?
In most UK workplaces there is no difference. Fire marshal and fire warden are two names for the same role: a trained member of staff who helps prevent fires, supports a safe evacuation, sweeps their area and reports to the responsible person. Some larger sites use the title fire warden for floor-level duties and fire marshal for a more senior coordinating role, but the core responsibilities are the same.
What does the fire triangle mean in practice?
The fire triangle shows that every fire needs three things at once: fuel, heat and oxygen. Take any one away and the fire cannot continue. In practice this is how extinguishers work. Water cools the fuel to remove heat, foam and CO2 can smother a fire to cut off oxygen, and good housekeeping removes the fuel before a fire can ever start.
What is a PEEP and who needs one?
A PEEP, or Personal Emergency Evacuation Plan, is a tailored escape plan for anyone who cannot evacuate without help. That might be someone with reduced mobility, a sensory impairment or a temporary injury. The responsible person should put a PEEP in place, and fire wardens are often the people who carry it out, making sure that person has assistance to reach a place of safety.
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Fire marshal training for hospital and care teams who manage evacuation of patients, protect escape routes and keep fire doors working across busy NHS and private sites.
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Fire marshal certificates for shop and store teams who guide customers to safety, manage assembly points and keep fire exits unobstructed during trading hours.
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Fire safety awareness for site teams managing hot works, flammable stores and changing escape routes, where temporary conditions raise the risk of fire.
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Fire marshal training for production and maintenance staff working around heat, dust, machinery and flammable materials across engineering and heavy industry.
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Fire marshal course for hotel and venue teams who evacuate guests safely, manage kitchen fire risks and protect people who do not know the building.
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Fire warden training online for facilities and cleaning staff who keep fire doors shut, exits clear and good housekeeping in place across buildings of every size.
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Fire marshal certificate for farm workers and contractors handling fuel, dust and machinery in barns and stores, often far from the nearest fire station.
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Learn every fire safety term in context.
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Related resources
Put the glossary into practice
Practical fire safety guides that build on the terminology above.
