How to Create a Fire Safety Plan for Construction Sites

Fire is one of the most devastating hazards on any construction site. Every year in the UK, hundreds of construction site fires cause millions of pounds in damage, project delays, and — in the worst cases — serious injuries or fatalities. A well-prepared fire safety plan is not just good practice; it is a legal requirement under UK regulations.

Why Construction Sites Are High-Risk for Fire

Construction sites present a unique combination of fire risks that you simply do not find in completed buildings. Understanding these risks is the first step in developing an effective fire safety plan.

Common fire hazards on construction sites include:

• Hot works — Welding, cutting, grinding, and soldering all produce sparks that can ignite nearby combustible materials
• Temporary electrical installations — Overloaded circuits, damaged cables, and improvised connections are common ignition sources
• Combustible materials storage — Timber, insulation, solvents, paints, and adhesives are often stored in large quantities on site
• Waste accumulation — Construction waste, particularly timber offcuts and packaging, creates significant fuel loads
• Arson — Construction sites are frequently targeted for arson, particularly during weekends and holidays when sites are unoccupied
• LPG and gas cylinders — Improperly stored or damaged gas cylinders can cause catastrophic fires and explosions

Legal Requirements Under UK Regulations

In the UK, construction site fire safety is governed by several pieces of legislation that every site manager and principal contractor must understand.

The Regulatory Reform (Fire Safety) Order 2005

This is the primary piece of fire safety legislation in England and Wales. It places a duty on the "responsible person" — typically the site manager or principal contractor — to carry out a fire risk assessment and implement appropriate fire safety measures.

CDM Regulations 2015

The Construction (Design and Management) Regulations 2015 require that fire risks are addressed as part of the overall health and safety management of a construction project. The principal contractor must ensure that adequate fire prevention measures are in place and that all workers receive appropriate fire safety training.

HSE Guidance

The Health and Safety Executive publishes guidance document HSG168, "Fire Safety in Construction," which provides detailed practical advice on managing fire risk on construction sites. While not legally binding in itself, following this guidance demonstrates compliance with the broader legal duties.

Step-by-Step: Creating Your Fire Safety Plan

A comprehensive fire safety plan should be site-specific, regularly reviewed, and communicated to everyone working on the project. Here is how to create one that meets UK requirements and genuinely protects your site.

Step 1: Conduct a Fire Risk Assessment

Your fire risk assessment is the foundation of everything else. It should identify:

1. Sources of ignition — Hot works, electrical equipment, smoking areas, temporary heating
2. Sources of fuel — Stored materials, waste, temporary structures, insulation
3. Sources of oxygen — Generally abundant on open construction sites, but consider enclosed spaces
4. People at risk — Workers, visitors, neighbouring properties and their occupants
5. Existing control measures — What is already in place, and what gaps exist

The risk assessment must be documented, reviewed regularly, and updated whenever site conditions change significantly — for example, when new trades arrive, when materials are delivered, or when the building becomes more enclosed.

Step 2: Establish Hot Works Procedures

Hot works are the single most common cause of construction site fires. Your plan must include strict procedures for any activity that produces heat, sparks, or flame.

• All hot works require a written permit before commencing
• A fire watch must be maintained during hot works and for at least 60 minutes afterwards
• Combustible materials must be removed or protected within a minimum 10-metre radius
• Suitable fire extinguishers must be immediately available at the point of work
• Hot works should not take place within the last hour of the working day unless a fire watch can be maintained

Step 3: Plan Materials Storage and Waste Management

How and where you store materials has a direct impact on fire risk. Your plan should specify:

• Flammable liquids must be stored in designated, ventilated areas away from ignition sources
• LPG cylinders must be stored upright in a well-ventilated compound, separated from other materials
• Timber and other combustible materials should be stored in quantities limited to the day's requirements where possible
• Regular waste clearance — ideally daily — to prevent fuel load accumulation
• Designated smoking areas located away from combustible materials and fuel stores

Step 4: Install Fire Detection and Alarm Systems

As a building progresses, fire detection becomes increasingly important, particularly once areas become enclosed. Your plan should detail:

• Temporary fire detection requirements at each construction phase
• Alarm systems that are audible throughout the site
• Regular testing schedules for all detection and alarm equipment
• Procedures for what happens when the alarm sounds

Step 5: Define Emergency Escape Routes and Assembly Points

Every worker on site must know how to get out safely in an emergency. This means:

• Clearly marked escape routes that are kept clear at all times
• Emergency lighting in enclosed areas or where work takes place outside daylight hours
• Designated assembly points that are clearly communicated to all workers
• Regular review of escape routes as construction progresses and the building layout changes
• Consideration of workers at height and how they will evacuate safely

Step 6: Provide Fire Fighting Equipment

Your plan must specify the type, number, and location of firefighting equipment across the site:

• Multi-purpose ABC dry powder extinguishers as a minimum on every floor and at key risk points
• CO2 extinguishers near electrical installations
• Fire blankets in canteen and welfare areas
• Temporary fire hydrants or rising mains as required for larger projects
• Regular inspection and maintenance of all equipment

Step 7: Implement Site Security Measures

Arson remains a significant threat to construction sites. Your fire safety plan should address security:

• Secure perimeter fencing with controlled access points
• CCTV coverage, particularly of material storage areas
• Security lighting on site boundaries and key areas
• Out-of-hours security patrols or on-site security presence for high-value projects
• Removal of materials that could be used to start fires from accessible areas

Training and Communication

A fire safety plan is only effective if everyone on site understands it. Your plan must include:

• Site induction — Every worker and visitor must receive fire safety information as part of their site induction
• Regular toolbox talks — Include fire safety as a regular topic in your toolbox talk schedule
• Fire drills — Conduct regular emergency evacuation drills and record the results
• Signage — Clear fire safety signage including escape routes, assembly points, and extinguisher locations

Reviewing and Updating Your Plan

A fire safety plan is a living document. It must be reviewed:

• Whenever the site layout changes significantly
• When new trades or subcontractors arrive on site
• Following any fire incidents or near misses
• At regular intervals — monthly as a minimum for most projects
• When changes to materials or processes introduce new fire risks

Recording and Documentation

Maintaining proper records is essential both for compliance and for demonstrating due diligence. You should keep records of:

• Fire risk assessments and reviews
• Hot works permits issued
• Fire safety training delivered
• Fire drill results
• Equipment inspections and maintenance
• Any fire incidents, near misses, or false alarms

Using a digital tool like FORGE Command to manage your site diary and documentation means these records are always accessible, properly organised, and cannot be lost or damaged.