Knowledge of fire protection
1、 Basic concepts of fire prevention
The formation of fire requires the following three conditions: combustibles, air, and fire source. Without one of the three conditions, it cannot be formed.
"For fire fighting, three methods are commonly used: suffocation (isolating air), cooling (reducing temperature), and demolition (removing combustible materials).".
2、 Fire Classification (GB/T4968-2008)
According to the type and combustion characteristics of combustibles, fires are classified into six categories: A, B, C, D, E, and F.
(1) Class A fire: refers to a solid material fire. This material usually has organic properties and can produce scorching embers when burned. Such as wood, coal, cotton, wool, hemp, paper, and other fires.
(2) Class B fire: refers to a fire caused by liquid or fusible solid substances. Such as kerosene, diesel, crude oil, methanol, ethanol, asphalt, paraffin, and other fires.
(3) Class C fire: refers to gas fire. Such as gas, natural gas, methane, ethane, propane, hydrogen, and other fires.
(4) Class D fire: refers to metal fire. Such as potassium, sodium, magnesium, aluminum magnesium alloy and other fires.
(5) Class E fire: live fire. Fire caused by charged objects burning.
(6) Class F fire: Fire caused by cooking materials (such as animal and vegetable fats) inside cooking utensils.
