OSFM BOF MOD A Complete Exam Study
Guide – Questions & Detailed Answers
⭐ Latest Updated Version 2026 | Exam-Focused | High
Success Rate
Boost your exam preparation with this simple, clear, and effective study guide. It includes
complete exam questions with correct detailed answers, designed to help you quickly
understand key concepts and improve your confidence.
Perfect for fast revision and focused study, this guide helps you practice exam-style questions
and reinforce important topics without wasting time.
✔ Complete questions with accurate answers
✔ Clear explanations for better understanding
✔ Easy-to-follow format for quick revision
✔ Covers commonly tested concepts
📚 Study smarter, feel confident, and get ready to succeed in 2026 exams.
Identify the organization of the Fire Department
Company Types
engine, truck, rescue, wildland/brush, HAZMAT, EMS
Chain of Command
Chief->Assistant Chief -> Battalion Chief -> Captain -> Lieutenant -> Firefighter
Principles of organization
displine, division of labor, unity of command, span of control
Identify the basic firefighter's role as a member of the fire service
Firefighter I
don doff PPE, Force entries, use SCBA...
Firefighter II
prepare reports, communicate, maintain fire equipment
identify the mission of the fire service
identify the fire department documents that apply to the position of firefighter
identify the function of Standard Operating Procedures/Guidelines
Identify the components of a member assistance program
identify the roll of other agencies as they relate to the fire department
Fire/Combustion
A chemical reaction that includes the self-sustaining rapid oxidation of a fuel
accompanied by the release of heat and light. Commonly referred to as fire
heat
, The energy transferred between objects that are at different temperatures
Ignition Temperature
the minimum temperature at which a fuel spontaneously ignites
Flammable limits and range
defined as the range in which gases or vapors form flammable mixtures with air or
oxygen. There is a minimum concentration of vapor in air or oxygen below which
propagation of flame does not occur on contact with a source of ignition.
Vapor Density
Weight of a given volume of pure vapor or gas compared to the weight of an equal
volume of dry air at the same temperature and pressure. A vapor density less than 1
indicates a vapor lighter than air; a vapor density greater than 1 indicates a vapor
heavier than air.
Solubility
A measure of how much solute can dissolve in a given solvent at a given temperature.
Flash point
The lowest temperature to which a substance must be heated in order for the substance
to give off vapors which will burn when exposed to a flame or ignition source.
BLEVE
Boiling Liquid Expanding Vapor Explosion
Oxygen (Oxidizing Agent)
Oxygen in the air around us. Air consists of about 21% oxygen
Oxidizer
Materials that react chemically with other materials
Oxidation
loss of electrons
Thermal Layering
Outcome of combustion in a confined space in which gases tend to form into layers,
according to temperature, with the hottest gases found at the ceiling and the coolest
gases at floor level.
Pyrolysis
The decomposition of organic matter by heat
Plume
a feather; a rising column of smoke, dust, or water
Endothermic reaction
A reaction that ABSORBS energy in the form of heat (object gets hot)
exothermic reaction
A reaction that RELEASES energy in the form of heat (object gets cold)
Fire triangle - 3 parts
Oxygen, Fuel, Heat
(provides reasonable explanation of nonflaming or smoldering combustion)
Fire tetrehedron
British Thermal Unit (BTU)
energy to increase temp of 1lb of water by one degree F
Fahrenheit
A temperature scale with the freezing point of water 32 degrees and the boiling point of
212 degrees
Guide – Questions & Detailed Answers
⭐ Latest Updated Version 2026 | Exam-Focused | High
Success Rate
Boost your exam preparation with this simple, clear, and effective study guide. It includes
complete exam questions with correct detailed answers, designed to help you quickly
understand key concepts and improve your confidence.
Perfect for fast revision and focused study, this guide helps you practice exam-style questions
and reinforce important topics without wasting time.
✔ Complete questions with accurate answers
✔ Clear explanations for better understanding
✔ Easy-to-follow format for quick revision
✔ Covers commonly tested concepts
📚 Study smarter, feel confident, and get ready to succeed in 2026 exams.
Identify the organization of the Fire Department
Company Types
engine, truck, rescue, wildland/brush, HAZMAT, EMS
Chain of Command
Chief->Assistant Chief -> Battalion Chief -> Captain -> Lieutenant -> Firefighter
Principles of organization
displine, division of labor, unity of command, span of control
Identify the basic firefighter's role as a member of the fire service
Firefighter I
don doff PPE, Force entries, use SCBA...
Firefighter II
prepare reports, communicate, maintain fire equipment
identify the mission of the fire service
identify the fire department documents that apply to the position of firefighter
identify the function of Standard Operating Procedures/Guidelines
Identify the components of a member assistance program
identify the roll of other agencies as they relate to the fire department
Fire/Combustion
A chemical reaction that includes the self-sustaining rapid oxidation of a fuel
accompanied by the release of heat and light. Commonly referred to as fire
heat
, The energy transferred between objects that are at different temperatures
Ignition Temperature
the minimum temperature at which a fuel spontaneously ignites
Flammable limits and range
defined as the range in which gases or vapors form flammable mixtures with air or
oxygen. There is a minimum concentration of vapor in air or oxygen below which
propagation of flame does not occur on contact with a source of ignition.
Vapor Density
Weight of a given volume of pure vapor or gas compared to the weight of an equal
volume of dry air at the same temperature and pressure. A vapor density less than 1
indicates a vapor lighter than air; a vapor density greater than 1 indicates a vapor
heavier than air.
Solubility
A measure of how much solute can dissolve in a given solvent at a given temperature.
Flash point
The lowest temperature to which a substance must be heated in order for the substance
to give off vapors which will burn when exposed to a flame or ignition source.
BLEVE
Boiling Liquid Expanding Vapor Explosion
Oxygen (Oxidizing Agent)
Oxygen in the air around us. Air consists of about 21% oxygen
Oxidizer
Materials that react chemically with other materials
Oxidation
loss of electrons
Thermal Layering
Outcome of combustion in a confined space in which gases tend to form into layers,
according to temperature, with the hottest gases found at the ceiling and the coolest
gases at floor level.
Pyrolysis
The decomposition of organic matter by heat
Plume
a feather; a rising column of smoke, dust, or water
Endothermic reaction
A reaction that ABSORBS energy in the form of heat (object gets hot)
exothermic reaction
A reaction that RELEASES energy in the form of heat (object gets cold)
Fire triangle - 3 parts
Oxygen, Fuel, Heat
(provides reasonable explanation of nonflaming or smoldering combustion)
Fire tetrehedron
British Thermal Unit (BTU)
energy to increase temp of 1lb of water by one degree F
Fahrenheit
A temperature scale with the freezing point of water 32 degrees and the boiling point of
212 degrees
