FIRE INVESTIGATOR
MASTER FOR TCFP EXAM
BANK / QUESTIONS AND
ANSWERS
2023 GRADED A+.
Is NFPA 921 a guide or a standard? - It is the Guide for Fire and Explosion Investigations
What are the six steps of the scientific method? - Recognize the need
Define the problem
Collect the data
Analyze t...
FIRE INVESTIGATOR
MASTER FOR TCFP EXAM
BANK / QUESTIONS AND
ANSWERS
2023 GRADED A+.
,Is NFPA 921 a guide or a standard? - It is the Guide for Fire and Explosion Investigations
What are the six steps of the scientific method? - Recognize the need
Define the problem
Collect the data
Analyze the data
Develop a hypothesis
Test the hypothesis
What step of the scientific method is inductive reasoning? - Analyze the data
What step of the scientific method is deductive reasoning? - Test the hypothesis
What are the four parts of the fire tetrahedron? - Fuel (reducing agent)
Heat
Oxidizing agent
Uninhibited chemical chain reaction
What kind of reaction absorbs energy, an endothermic or an exothermic reaction? -
Endothermic
What is heat transfer by direct contact called? - Conduction
What is heat transfer by gas flow / air movement called? - Convection
What is heat transfer by microwave energy called? - Radiation
What is a fuel controlled fire? - A fire that is limited by the amount of combustibles.
What is a ventilation controlled fire? - A fire that is limited by the amount of oxygen.
What are the stages of fire growth? - Ignition
Growth
Flashover
Fully Developed
Decay
,What is a flashover? - The transition phase from growth to fully developed, where all
surfaces reach ignition temperature almost simultaneously.
What is ignition of the underside of the hot gas layer called? - Flameover or rollover
What factors influence flashover conditions? - Size of the compartment
Height of ceiling
Ventilation
Amount of fuel
Layout of fuel
Location of fire in the compartment
What are fire patterns? - The physical manifestation of the affects of fire on materials.
What are the different types of fire patterns on the walls and ceiling? - Plume Generated
patterns (often V shaped)
Ventilation generated patterns
Hot gas layer patterns (Line of demarcation)
What is spalling? - The separation of chunks of concrete with explosive force caused by the
expansion of water (moisture) trapped in the concrete as it turns to steam
What is char? - Pyrolized carbonaceous material
What is oxidation? - Physical change in appearance of a material resulting from the
combination of oxygen.
What is alloying? - Mixing two metals heated then cooled to change their properties. Often
melts at a lower temperature.
What is a clean burn? - When there was enough heat to burn away all carbon deposits
(soot) on a surface leaving a "clean" surface. Occurs on non-combustible surfaces.
What is soot? - Elemental carbon produced during incomplete combustion.
What is calcination? - When chemically bound water is driven out of gypsum walls by the
heat of the fire.
Does a 25 Watt light bulb expand towards the fire or pull inward away from it? - Bulbs 25
watts or less pull away. Bulbs greater than 25 watts will expand towards the fire.
What causes heat shadowing? - An object blocking the travel of radiated heat.
What is a dead load? - The weight of things attached to the building, like flooring, cloumns,
and roof coverings.
, What is a live load? - A load that can move, like people, furniture, wind, water, and snow.
What is compartmentation? - Design features of a building that limit fire growth to the
room of origin.
What are the five building construction types? - Type I - Fire resistant
Type II - Non combustible
Type III - Ordinary
Type IV - Heavy timber
Type V - Wood frame
What is ordinary construction? - Exterior walls are masonry and frame is wood.
What is wood frame construction? - Lightweight wood construction, used in apartments,
houses.
What is platform frame construction? - Each floor is a seperate platform.
What is balloon frame construction? - The wall studs extend from the foundation to the
roof.
What is Ohm's Law? - V=IR
(E = I x R)
What is voltage? - Pressure
What is current? - Flow
What is resistance? - Friction, opposition to the flow
What is an overload? - Power needs exceed the circuit's capacity.
Alternating Current VS Direct Current - Alternating current - the electrons flow out from
the source and then back to it, alternating directions.
Direct current - electrons flow one way.
Single Phase service - Residential. Three conductors: Two insulated conductors at 120 V
each, and a bare ground wire.
Three phase system - Commercial. Four conductors: Three insulated conductors (480, 240,
or 208 V), and a bare ground wire.
What is the difference between grounding and bonding? - Grounding connects the system
to the earth (ground). Bonding connects to systems together so the charge stays the same
between them.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Tutor23. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.19. You're not tied to anything after your purchase.
