Static electricity is generated by friction during relative motion. Charges can accumulate in poor conductors or insulated good conductors. Three stages are necessary for electrostatic ignition: charge separation, accumulation, discharge
Fire safety aims to reduce destruction caused by fire. Measures include preventing ignition and limiting fire spread. Fire hazards increase likelihood of fire or impede escape
Spontaneous combustion occurs through self-heating, thermal runaway, and autoignition. Materials with low ignition temperatures release heat through oxidation or fermentation. Improper storage is main cause, materials like coal and cotton need proper temperature control
Firewall is a fire-resistant barrier preventing fire spread. Used between buildings, structures, transformers, or within vehicles. Forms part of passive fire protection systems
Wildfires are uncontrolled fires in combustible vegetation areas. Crown fires burn above ground, surface fires burn on ground, ground fires burn underground. Human activities cause 90% of US forest fires, natural causes 10%. Common human causes include burning trash, campfires, engine sparks, and arson. Natural causes include volcanic eruptions, lightning, dry climates, and extreme heat
Fire safety aims to prevent destruction caused by uncontrolled fires. Fire requires fuel, oxygen, and heat to initiate combustion. Fire tetrahedron consists of four variables: fuel, oxygen, heat, and chemical reactions