ISO 19700-1 to control the fire airflow measurement equivalence ratio method of toxic components
This standard describes the used for fire gas generated and determination of composition of combustion products and determine a method of pipe type furnace, especially in an fire generated within the framework of the toxic products of decomposition conditions. It USES - mobile specimen and tube furnace at different temperature and gas flow as the fire simulation.
This method has been designed for use as a - TC92 level B group of performance-based engineering method, hazard assessment and fire safety engineering calculation provide input data. In different temperature, flameless and flaming decomposition conditions and different in the tube furnace fuel/oxygen ratio are combined, the method can be widely used to simulate fire conditions. These include as ISOXXX table XX fire described in the following types:
- phase 1: no flame
- phase 1 b) oxidative pyrolysis from external radiation;
- phase 2: well ventilated with flame (on behalf of - is there a fire flame development) 1;
- phase 3: good ventilation with flame 2:
- phase 3 a) in a closed small or poor ventilation partition destructive fire;
- phase 3 b) in large or open fire after the flashover in the partition.
Among them 1: compared with the size of the partition size, fire flame below the hot gas layer base level and size of the fire is controlled fuel.
2: compared with the size of the partition size may be large, fire flame is higher than the heat and fire size at the bottom of the layer is controlled
