Fire Prevention

Part of Petroleum and Tar

Fire safety practices when working with petroleum, tar, and their volatile derivatives.

Why This Matters

Petroleum and tar products are among the most dangerous materials you will handle in a rebuilding society. Unlike a campfire that stays where you put it, petroleum vapors are invisible, heavier than air, and can travel along the ground to reach an ignition source meters away. A single moment of carelessness during distillation, storage, or use of petroleum products can destroy an entire workshop, injure or kill workers, and set back a community’s rebuilding efforts by months or years.

Historical petroleum operations were plagued by catastrophic fires. Early oil refineries in the 1860s burned with alarming regularity, and it took decades of hard-won experience to develop the safety practices that made petroleum handling manageable. In a post-collapse scenario, you will not have fire departments, burn units, or the luxury of rebuilding from insurance payouts. Prevention is not optional — it is existential.

The good news is that petroleum fires are almost entirely preventable with proper procedures, facility design, and discipline. Every fire requires three elements: fuel, oxygen, and an ignition source. Remove any one of these and fire cannot occur. The practices in this article focus on systematically controlling all three.

Understanding Petroleum Fire Hazards

Different petroleum fractions present different levels of danger. The key concept is flash point — the lowest temperature at which the liquid gives off enough vapor to ignite when exposed to a spark or flame.

Fraction	Approximate Flash Point	Hazard Level
Gasoline/naphtha	Below -40°C (-40°F)	Extreme — vapors ignite at any normal temperature
Kerosene	38-72°C (100-162°F)	High — dangerous in warm weather or near heat
Lamp oil (refined kerosene)	50-65°C (122-149°F)	Moderate-High
Diesel/heavy oils	52-96°C (126-205°F)	Moderate — safer at room temperature
Tar/pitch	200°C+ (390°F+)	Lower — but burns intensely once ignited
Crude petroleum	Varies widely	High — contains gasoline fraction

Critical Understanding

Gasoline vapors are explosive at concentrations between 1.4% and 7.6% in air. You cannot see or smell these concentrations reliably. Assume that any enclosed space where gasoline has been present contains explosive vapor until proven otherwise by thorough ventilation.

How Petroleum Fires Start

The most common ignition sources in a pre-industrial setting:

1. Open flames: Candles, oil lamps, cooking fires, forge fires — these are everywhere in a rebuilding society and are the primary danger
2. Hot surfaces: Metal retorts, stove pipes, heated vessels — petroleum vapor ignites on contact with surfaces above its autoignition temperature (~250°C for gasoline)
3. Sparks: From metal striking metal or stone, static electricity, or friction
4. Spontaneous combustion: Rags soaked in drying oils or petroleum residues can self-heat and ignite if wadded together

Facility Design for Safety

The single most effective fire prevention measure is proper facility layout. Design your petroleum-handling area with these principles:

Separation and Distance

• Minimum 30 meters between petroleum storage/processing and any building with open flame (kitchens, forges, living quarters)
• Minimum 15 meters between petroleum storage and any other structure
• Store different fractions separately — a gasoline fire reaching your kerosene store creates a cascading disaster
• Place distillation equipment downhill and downwind from living areas when possible

Ventilation

• All petroleum handling areas must be open-air or heavily ventilated. Never distill, decant, or store volatile fractions in enclosed spaces
• Petroleum vapors are heavier than air and collect in low spots. Ensure work areas have no pits, trenches, or depressions where vapors can pool
• If working in a roofed structure, leave the walls open on at least two sides for cross-ventilation
• Dig a shallow drainage trench around the work area sloping away from structures, so spilled liquid flows away from ignition sources

Ground Preparation

• Clear all dry vegetation, leaves, and combustible debris within 10 meters of petroleum operations
• Bare earth or sand is the ideal ground surface around petroleum operations
• Keep a supply of dry sand or earth near every work station for smothering spills
• Never allow sawdust, wood shavings, or straw anywhere near petroleum operations

Safe Procedures for Common Operations

During Distillation

1. Never leave a distillation in progress unattended. Assign a dedicated watch at all times.
2. Heat the retort with an enclosed firebox, not an open fire beneath the vessel. The firebox should be separated from the collection area.
3. Ensure all joints and connections are sealed before heating begins. A vapor leak near the firebox is an explosion waiting to happen.
4. Keep the condenser functioning — if cooling water runs out, vapors exit uncondensed and can ignite. Have backup water ready.
5. Collect fractions in containers positioned at least 3 meters from the firebox, with the condenser pipe running through a trough between them.
6. If you smell strong petroleum vapors at any point, immediately bank the fire and ventilate before investigating.

During Storage and Transfer

1. Ground yourself before handling containers. Touch a metal stake driven into the earth to discharge static electricity.
2. Pour volatile liquids slowly to minimize splashing and vapor generation.
3. Never pour volatile fractions in direct sunlight on hot days — the heat increases vapor pressure dramatically.
4. Keep containers sealed when not actively pouring. Even brief exposure releases significant vapor.
5. Fill containers only to 90% capacity to allow for thermal expansion.
6. Label every container clearly. Mistaking gasoline for kerosene has killed countless people.

During Use

1. Fueling lamps: Extinguish the lamp, let it cool, then refuel. Never add fuel to a burning lamp.
2. Torches and fire starting: Apply petroleum products to the material before bringing near flame. Never pour fuel onto an existing fire.
3. Lubrication: Use only heavy fractions for lubrication near heat sources like bearings. Lighter fractions evaporate and create vapor hazards.

Emergency Preparedness

Despite all precautions, fires can occur. Preparation determines whether a small fire stays small.

Fire-Fighting Equipment

Maintain the following at every petroleum work area:

• Sand buckets: At least 4 buckets of dry sand within arm’s reach of every work station. Sand smothers petroleum fires effectively.
• Earth/dirt pile: A mound of loose earth near the work area for larger spills.
• Wet blankets: Heavy wool or tightly woven cotton blankets kept soaked in water. These can smother small fires and protect people escaping through flames.
• Long-handled shovels: For throwing sand or earth onto fires from a safe distance.

Never Use Water on Petroleum Fires

Water does not extinguish burning petroleum. It spreads the fire by floating burning oil on top of the water, scattering it across a wider area. Water on a petroleum fire is one of the most dangerous mistakes possible. Use sand, earth, or smothering only.

Emergency Procedures

Post these rules prominently and drill them regularly:

1. Small spill, no fire: Cover immediately with sand or earth. Do not wash with water. Scoop up contaminated sand and dispose of it away from structures.
2. Small fire (less than 1 meter): Smother with sand, earth, or wet blanket. Approach from upwind. Do not try to move burning containers.
3. Large fire: Evacuate immediately. Do not attempt to fight a petroleum fire larger than you can smother in seconds. Move upwind and uphill. Account for all personnel.
4. Person on fire: Drop and roll on bare ground. Smother with wet blanket. Do not run — running fans the flames. Do not use water if petroleum is the fuel source on clothing, as it can spread the burning liquid.
5. Vapor exposure: Move to fresh air immediately. If someone collapses in a vaporous area, do not enter without ventilating first — you will also collapse.

Burn Treatment

In a rebuilding scenario without modern medical facilities:

1. Cool the burn immediately with clean, cool (not ice-cold) water for at least 10 minutes
2. Do not apply butter, grease, or oil — these trap heat and worsen the burn
3. Cover with clean cloth loosely — do not wrap tightly
4. For severe burns (blistering, charred skin, or burns covering large areas), this is a medical emergency requiring the best care your community can provide
5. Keep the victim hydrated — severe burns cause massive fluid loss

Training and Culture

The most important fire prevention tool is a culture of safety discipline.

• Train every person who will be near petroleum operations. Not just the distillers — anyone who enters the area.
• Designate a safety officer for every shift of petroleum work. This person’s sole job is watching for hazards, not doing production work.
• Enforce no-flame zones rigorously. No smoking, no candles, no “quick” torch use near petroleum areas. Zero exceptions.
• Practice emergency drills monthly. When a fire occurs, people must react from trained instinct, not panicked improvisation.
• Investigate every incident, no matter how small. A small spill today is a catastrophic fire tomorrow. Identify the cause and fix the procedure.

The Two-Person Rule

Never allow anyone to work alone with petroleum products. Always require at least two people present — one to work, one to watch and respond to emergencies. This single rule has saved more lives than any piece of equipment.

Seasonal Considerations

Fire risk varies significantly with weather:

Hot weather: Increased vapor pressure from all fractions. Even kerosene becomes more dangerous. Schedule petroleum work for early morning or evening. Increase ventilation. Monitor containers for pressure buildup.

Dry weather: Surrounding vegetation becomes tinder. Expand your cleared zone. Keep firefighting sand supplies doubled. Consider suspending distillation operations during extreme fire danger.

Cold weather: Reduced vapor hazard from most fractions, but gasoline remains dangerous at any temperature. Indoor work becomes tempting — resist the urge for enclosed spaces.

Windy conditions: Wind can carry vapors unpredictably toward ignition sources, but also provides excellent natural ventilation. Monitor wind direction and reposition operations if the wind shifts toward flames or structures.