STCW Basic Fire Fighting Exam Questions & Answers 100% Correct!
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Course
STCW Basic Fire Fighting
Institution
STCW Basic Fire Fighting
Fire Triangle - ANSWERSOxygen, Heat, Fuel
Types of Fuel and Combustion:
Liquid Fuels - ANSWERSVaporization - is the release of liquid's molecules into the atmosphere, when vapors reach the *Flashpoint they ignite
Types of Fuel and Combustion:
Volatility - ANSWERS- Indicates the ability ...
STCW Basic Fire Fighting Exam
Questions & Answers 100% Correct!
Fire Triangle - ANSWERSOxygen, Heat, Fuel
Types of Fuel and Combustion:
Liquid Fuels - ANSWERSVaporization - is the release of liquid's molecules into the
atmosphere, when vapors reach the *Flashpoint they ignite
Types of Fuel and Combustion:
Volatility - ANSWERS- Indicates the ability of a liquid to liberate into a gas
- The lower the boiling point, the more volatile
Types of Fuel and Combustion:
Flame Point - ANSWERSThe lowest temperature at which the liquid emits adequate
gas to ignite with a flame.
(May be a light flicker because the liquid does not emit enough gas to keep the fire
alive)
Types of Fuel and Combustion:
Combustive point - ANSWERSThe temperature where the liquid will emit so much gas,
that if ignited, it will continue to burn
Types of Fuel and Combustion:
Self-Ignition Point - ANSWERSThe temperature at which the gas/air mixture will start to
burn by itself without being ignited by a flame or a spark
Categories of Combustion:
Spontaneous Ignition - ANSWERSOccurs when a substance heats up and ignites itself
without any external heat source
Ex. fish flour, chemical substances, rags, waste from oil/paint and copra (coconut oil)
Categories of Combustion:
Inflammable Materials - ANSWERSThe material will ignite with a match and continue to
burn after ignition
Ex. paper, wood, textiles
, Categories of Combustion:
Non-flammable Materials - ANSWERSNeed a large supply of heat before it ignites and
will extinguish itself if the external heat source is removed
Ex. Wool, plaster, certain plastic products
Backdraft - ANSWERSA fire explosion when air is rapidly introduced to an oxygen
deficient space, increasing safety risk to fire fighters
Class A Fire - ANSWERS- Ordinary Combustible Fires
- Ex. Wood, paper, plastic and everything that leaves behind ash when burned
- Primary extinguishing agent: water (cools fuel below ignition point) and dry chemicals
Class B Fire - ANSWERS- Flammable Liquid fires
- Ex. Gasoline, petroleum greases, tars, oils, oil-based paints, solvents, alcohols, and
flammable gases like butane and propane
- Primary extinguishing agent: foam; or CO2 or dry chemicals
Class C Fire - ANSWERS- Energized electrical fires
- to extinguish, secure power and use an extinguishing agent for the burning type of
fuel. CO2 or dry chemical extinguishers can be used.
Class D Fire - ANSWERS- Metal fires
- Ex. Burning metals, magnesium, sodium, and lithium
- Extinguish with a salt-based or sand-based powder
- Do not use water.
Class K - ANSWERS- Cooking oils and fats
- Ex. vegetable oil, animal oil, or fats in cooking appliances
- Class K fire extinguisher (commercial kicthens)
To Extinguish a fire, you must: - ANSWERSRemove one side of the fire tetrahedron by:
- Removing the fuel: turning valve off to stop fuel supply
- Reduce the heat: use water to cool products below their ignition temp
- Remove the oxygen: use lid to over cooking pan
- Remove chemical chain reaction: use dry chemical extinguisher to separate the fuel,
oxygen, and heat
Conduction - ANSWERSThe transfer of heat through and between solid conductors like
metal that transfer heat well
Convection - ANSWERSThe spread of heat through thermal energy using water and air
currents called fluid motion
Radiation - ANSWERSThe spread of heat through space
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