Fire And Rescue Operations (NQF 4) Practice Questions - Further Education And Training Certificate Fire And Rescue Operations Assessment (NQF Level 4) Exam

A rapid explosion of flammable gases when oxygen is suddenly introduced into a ventilation-limited space. The transition phase where all exposed combustible surfaces in a compartment are heated to their ignition temperature and ignite simultaneously. The initial ignition stage where local pyrolyzing vapors ignite. A localized combustion of hot gas layers rolling across the ceiling.