Stages of Fire
Stage of fire where energy release is at a maximum and is only limited by availability of fuel and oxygen.
What is FULLY DEVELOPED?
BURNING COOKING OILS AND FATS IN A KITCHEN
What is a CLASS K Fire?
Instantaneous explosion of super-heated gases that occurs when oxygen is introduced into an oxygen depleted confined space.
What is a BACKDRAFT?
A RAPID CHEMICAL PROCESS THAT PRODUCES HEAT AND LIGHT
What is a Fire?
THE SMALLEST UNIT OF MATTER
What is an Atom?
The early stage of a fire where fuel and oxygen are virtually unlimited.
What is the GROWTH STAGE?
THIS FIRE INVOLVES COMBUSTIBLE METALS SUCH AS SODIUM, MAGNESIUM, AND TITANIUM
What is a CLASS D Fire?
Condition in which unburned gases traveling along the ceiling mix with oxygen and ignite, spreading rapidly across the ceiling.
What is ROLLOVER?
SOLID, LIQUID, AND GAS
WHAT ARE THE 3 FORMS OF MATTER
A CHEMICAL REACTION UNITES FUEL, HEAT, AND OXYGEN IN THIS FIRE TRIANGLE
WHAT IS THE FIRE TETRAHEDRON
Stage of fire when fuel is consumed and energy release diminishes. Fire goes from vent controlled to fuel controlled.
What is DECAY STAGE?
THIS FIRE INVOLVES ENERGIZED ELECTRICAL EQUIPMENT
What is a CLASS C Fire?
Appearance of these indicates that the upper portions of the gas layer are within their flammable limits
What are isolated flames?
HEAT SPREADS VIA THESE METHODS
WHAT IS CONDUCTION, CONVENTION, RADIATION, AND DIRECT CONTACT
IF GAS IS PRESENT IN THE AIR BEYOND THIS MIXTURE LEVEL, IT WILL NOT BURN
WHAT IS UPPER FLAMMABLE LIMIT (UFL)
Stage of fire marked by ignition.
What is INCIPIENT STAGE?
FIRE THAT CAN BE EXTINGUISHED BY SHUTTING OFF THE SUPPLY OF FUEL OR BY USING FOAM TO EXCLUDE OXYGEN FROM THE FUEL
What is a CLASS B Fire?
Condition in which all surfaces and objects reach their ignition temperature and flames break out at once over the surface of all objects in the space.
What is a FLASHOVER?
ENERGY IS CLASSIFIED INTO THESE FORMS
What is Kinetic, potential and chemical?
(What is Thermal, Radiant, Chemical, Electric and Nuclear?)
THIS OCCURS WHEN A FLAMMABLE LIQUID IS STORED UNDER PRESSURE AND THE CONTAINER FAILS IN A FIRE
What is a BLEVE?
The stage at which a fire first moves from fuel controlled to ventilation controlled.
What is GROWTH STAGE?
BURNING ORDINARY COMBUSTIBLES SUCH AS PAPER AND WOOD
What is a CLASS A Fire?
THE TENDENCY OF FIRE GASES IN AN ENCLOSED SPACE TO FORM LAYERS ACCORDING TO THEIR TEMPERATURE
WHAT IS THERMAL LAYERING
THE PROCESS IN WHICH OXYGEN COMBINES CHEMICALLY WITH ANOTHER SUBSTANCE TO CREATE A NEW COMPOUND
WHAT IS OXIDATION
THE LOWEST TEMPERATURE AT WHICH A SUBSTANCE RELEASES ENOUGH VAPOR TO IGNITE AND SUSTAIN COMBUSTION
What is Flame Point? (Fire Point)