is to cover the entire exposed surface of the combustible agent (Wright 1997). Certain chemical fires such as those fueled by petroleum products and byproducts, are attacked with light water consisting of water with special chemical agents allowing water to penetrate and mix more readily with high-viscosity liquids. Likewise, halon has been used where water is considered too damaging, such as in electrical environments or where expensive computer equipment is susceptible to significant water damage.
Compressed air foam (CAF), when it is available, is preferable to halon, because of environmental concerns (Jones 2008). Compressed air foam is applied in varying combinations and relative concentrations of air and water for different types of fires.
Conclusion:
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