The Complete UKFire Extinguisher Guide
Interactive training guide covering all UK fire extinguisher types, colour codes, fire classes, BS 5306 requirements, the PASS technique, and the latest Scottish fire safety law including HMO regulations.
The 6 Classes of Fire
Before choosing an extinguisher, you must identify the class of fire. Using the wrong type can be ineffective or even dangerous.
Class A
Solid Materials
Examples: Wood, paper, textiles, plastics, rubber
Class B
Flammable Liquids
Examples: Petrol, diesel, oils, solvents, paints
Class C
Flammable Gases
Examples: Propane, butane, natural gas, methane
Class D
Metals
Examples: Magnesium, aluminium, sodium, potassium
Class Electrical
Electrical Equipment
Examples: Computers, servers, switchboards, appliances
Class F
Cooking Oils & Fats
Examples: Deep fat fryers, chip pans, cooking oils
Critical Warning
Never use water on Class B (liquid), electrical, or Class F (cooking oil) fires. Water can cause explosions, electrocution, or spread burning oil. Always identify the fire class FIRST.
UK Fire Extinguisher Types & Colour Codes
All UK extinguishers have a red body with a coloured label band per BS EN 3. Click each type to explore its uses, fire classes, and safety warnings.
Water
Colour band: Signal Red (All Red)
Water Extinguisher
Cools burning material below its ignition temperature. The water soaks into solid materials to prevent re-ignition.
Fire Class Compatibility
Rating
13A / 21A / 34A
Range
3 – 4 metres
Duration
30 – 60 seconds
Best For
- Offices with paper and cardboard
- Shops and retail premises
- Schools and educational buildings
- Warehouses with solid stock
Never Use On
- Electrical fires — risk of electrocution
- Flammable liquid fires — spreads burning liquid
- Cooking oil fires — can cause violent eruption
- Metal fires — violent reaction
The P.A.S.S. Technique
Remember P.A.S.S. — the universal method for operating any fire extinguisher safely and effectively.
Pull
Pull the pin to unlock the operating lever
Aim
Aim the nozzle or hose at the base of the fire, not the flames
Squeeze
Squeeze the handle or lever to discharge the extinguisher
Sweep
Sweep from side to side at the base of the fire until it is out
Before Using Any Extinguisher
- 1. Raise the alarm and call 999 immediately
- 2. Only tackle small fires — never put yourself at risk
- 3. Ensure you have a clear escape route behind you
- 4. Stand 1.5 – 2 metres from the fire (3m for powder types)
- 5. If in doubt, evacuate and wait for the fire service
Scottish Fire Safety Law
Key legislation and regulations governing fire safety in Scotland. Non-compliance carries severe penalties including unlimited fines and imprisonment.
Fire (Scotland) Act 2005
The primary legislation governing fire safety in Scotland. Places a duty on employers and persons in control of premises to carry out a fire safety risk assessment and maintain appropriate fire-fighting equipment.
Fire Safety (Scotland) Regulations 2006
Requires that fire-fighting equipment (including extinguishers) is maintained in an efficient state, in efficient working order and in good repair. Annual servicing by a competent person is mandatory.
HMO Licensing (Scotland)
Under the Housing (Scotland) Act 2006, all Houses in Multiple Occupation (HMOs) must hold a licence. Fire safety is a core licensing condition — landlords must provide adequate fire extinguishers, fire blankets, smoke alarms, heat detectors, and emergency lighting. Failure to comply can result in fines up to £50,000 or imprisonment.
BS 5306-3:2017
The British Standard for commissioning and maintenance of portable fire extinguishers. Requires annual servicing, extended servicing at intervals of 5 or 6 years (depending on type), and condemning/replacing at 20 years maximum.
The Tolerable Standard (Scotland)
From 1 February 2024, the Tolerable Standard now requires interlinked fire and smoke alarms in ALL Scottish homes. Landlords and HMO operators must also ensure proper fire extinguisher provision in common areas and kitchens.
Scottish Fire and Rescue Service Guidance
SFRS recommends a minimum provision of one fire blanket in every kitchen, and multi-purpose ABC powder or foam extinguishers on every floor of HMO properties. Higher-risk premises may require additional wet chemical or CO2 extinguishers.
Scottish HMO Fire Safety Checklist
Operating a House in Multiple Occupation (HMO) in Scotland without proper fire safety provisions is a criminal offence. Penalties include fines up to £50,000, prosecution, and licence revocation. Here's what you need:
- Minimum one fire blanket per kitchen
- Fire extinguisher on every floor level
- Annual servicing of all extinguishers by a competent person
- Interlinked smoke alarms & heat detectors in every room (from Feb 2024)
- Emergency lighting in common areas, hallways & stairwells
- Fire risk assessment reviewed annually
- Clear escape routes with fire doors to bedrooms & kitchens
- Fire safety information pack for all tenants
- Extinguisher signage at BS ISO 7010 standard
- Fire action notices displayed in prominent positions
Penalties for Non-Compliance
Don't risk prosecution — ensure your property is compliant.
Book a Fire Safety AssessmentBS 5306 Servicing Timeline
Every fire extinguisher in the UK must follow this mandatory servicing schedule.
Every
Monthly
Visual Inspection
Check for damage, correct pressure, unobstructed access, intact tamper seal. Record in fire log.
Every
Annual
Basic Service
Full inspection and service by a competent person. Checks weight, pressure, condition, hose, and label. Issues service certificate.
Every
5 Years
Extended Service
Discharge, internal inspection, refill and recharge. Applies to water, foam, and powder types. CO2 types at 10 years.
Every
20 Years
Replace / Condemn
Maximum life for any extinguisher body. Must be condemned and replaced. No exceptions under BS 5306.
Frequently Asked Questions
What fire extinguishers are required in an HMO in Scotland?
HMO properties in Scotland require at minimum: one fire blanket per kitchen, fire extinguishers on every floor level (typically 13A-rated foam or ABC powder), and specialist wet chemical extinguishers near commercial cooking equipment. All must be serviced annually under BS 5306-3.
How often must fire extinguishers be serviced under UK law?
Fire extinguishers must receive a basic service annually by a competent person. Extended service (discharge and recharge) is required every 5 years for water, foam, and powder types, and every 10 years for CO2 types. All extinguishers must be replaced or refurbished at 20 years.
Can I use a water extinguisher on an electrical fire?
NEVER use a standard water extinguisher on electrical fires — it conducts electricity and can cause electrocution. Switch off the power first if safe, then use a CO2 extinguisher. Water mist extinguishers with de-ionised water ARE safe on electrical equipment up to 1000V.
What changed with the Scottish Tolerable Standard in 2024?
From 1 February 2024, all Scottish homes must have interlinked fire alarms (smoke alarms in living rooms and hallways, heat detectors in kitchens). This applies to all housing types including private rented, HMOs, and owner-occupied properties.
What are the penalties for non-compliance with fire safety in Scotland?
Penalties under the Fire (Scotland) Act 2005 include fines of up to £50,000 for summary conviction, unlimited fines on indictment, and up to 2 years imprisonment. HMO licence holders face additional sanctions including licence revocation.
Sources & Further Reading
- Fire Extinguisher — Wikipedia overview of types, history, and standards
- Fire Classes — European and UK fire classification system
- Scottish Government — Fire & Rescue Policy — Official Scottish fire safety legislation
- Fire (Scotland) Act 2005 — Primary legislation for fire safety in Scotland
- HMO Regulations (UK) — Wikipedia guide to Houses in Multiple Occupation
- Scottish Fire and Rescue Service — Official SFRS guidance and resources
This guide is provided for general information only. Always consult current legislation and a competent fire safety professional for compliance advice.
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