Objectives of fire hazards
aims to educate the readers understand the Fire Triangle Principle know the Classification of Fires
A chemical reaction between flammable or combustible materials and oxygen. It can originate from human accidents, natural disaster, or intentional fire setting.
are wildfires that are also called bush fires, or grass fires, depending on the vegetation, in the country-side or wilderness.
occur primarily in cities or towns with the potential to rapidly spread to adjoining structures. These fires damage and destroy homes, schools, commercial buildings and vehicles.
In March 26, 2016, more than 200 hectares Of forest have been burned and damaged In an ongoing forest fire in ______
In August 2014, the province of ____experienced a Forest Fire
involves the burning of Forest fires especially in tropical countries Around the world.
Effects of forest fires
Wildfires are destructive because it will destroy housed resided within or near forests. It can decimate forest ecosystems and reduce trees which provide oxygen. Uncontrolled forest fires also lessen the biodiversity of a forested area as it destroys the natural habitat of all types of birds, mammals, and reptiles, among others, especially the endemic species, found in the specific area.
On March 18, 1996
Ozone disco Club, killing at least 162 people, most of which were college students celebrating their graduation.
Used as a model for conveying the components of a fire. The 3 sides namely, oxygen (O2), heat, and fuel are the elements of fire. The 3 elements are combined in a right proportions for a fire to occur.
which is perhaps the most essential of fire elements.
is needed in order for a fire to burn. A fuel source can be anything that is flammable.
is needed to start a fire and continue it as it grows.
Is an alternative to the fire model that adds another element to the fire, which is chemical reaction.
Class A Fires
Wood Paper Plastic Rags
Class B Fires
Gasoline Oil Grease Paint
Class C Fires
>Electrical Fires Office Equipment Motors Switchgear Heaters
Class D Fires
>Metals Potassium Sodium Aluminum Magnesium
How to extinguish for Class A
How to extinguish for Class B
metal cover, wet sack, towel, cloth or blanket, sand and soil
How to extinguish for Class C
main switch is the first consideration. Then what is useful for A & B can be used here.
Stages of fire
Ignition stage Growth Fully Developed Decay(Burnout)
transfer of heat from molecule to molecule
transfer of heat through air medium
transfer through rays.