Which of the following is not a phase of fire development?

The static phase is not recognized as a standard phase of fire development. The phases of fire development typically include ignition, growth, fully developed, and decay phases. Each of these phases describes a specific stage in the progression of a fire.

In the ignition phase, a fire starts as it reaches the conditions necessary for combustion, such as the right fuel, heat source, and oxygen. The growth phase follows, where the fire spreads and increases in intensity. The fully developed phase is when the fire reaches its peak and is burning robustly with significant heat and flame. Finally, the decay phase represents the decline in fire intensity as the fuel source is consumed and thermal energy decreases.

Since the static phase does not align with any of these established fire development stages, it is not considered a phase in this context. Understanding these phases is crucial for fire inspection and safety protocols, as each phase poses different hazards and requires specific responses.