Firefighter 1 & 2

Firefighter 1 & 2 Verified Solutions what is the fire triangle? Ans- oxygen, fuel, and heat what is the fire tetrahedron? Ans- oxygen, fuel, heat, and a self-sustained chemical chain reaction what is potential energy? Ans- stored energy possessed by an object that can be released in the future to perform work what is kinetic energy? Ans- the energy possessed by a moving object what is the british thermal unit (BTU)? Ans- the amount of heat required to raise the temperature of 1 pound of water 1 degree fahrenheit what is NFPA 1971 Ans- standard on protective ensembles for structural fire fighting and proximity fire fighting what is ANSI standard Z87.1 Ans- practice for occupational and educational eye and face protection what are the three components of a turnout coat? Ans- outer shell, moisture barrier, and thermal barrier what does DRD stand for? Ans- drag rescue device what does IDLH stand for? Ans- immediately dangerous to life and health what are four common respiratory hazards associated with fires and other emergencies? Ans- oxygen deficiency, elevated temperatures, smoke, and toxic atmospheres what does PPE stand for? Ans- personal protective equipment according to NFPA 1971, full PPE consists of the following? Ans- helmet, hood, coat, pants, gloves, and boots the following PPE is not part of NFPA 1971 but required by NFPA 1500? Ans- eye protection, hearing protection, self-contained breathing apparatus (SCBA), and personal alert safety system (PASS) what are the four basic SCBA componets? Ans- harness assembly, air cylinder assembly, regulator assembly, and face piece assembly air cylinders must be stamped or labeled with the dates of? Ans- manufacture, and hydrostatic test according to both the u.s. department of transportation and transport canada, steel and aluminum air cylinders must be tested every __ years and composite air cylinders every __ years? Ans- 5 and 3 what is a class B fire? Ans- flammable and combustible liquids, gases, and greases such as alcohol, cooking oils, gasoline, lubricating oils, and liquefied petroleum gas (LPG) what is a class C fire? Ans- class A or class B fires created by electrical energy what is a class D fire? Ans- combustible metals and alloys such as lithium, magnesium, potassium, and sodium what is a fire extinguisher? Ans- a portable fire fighting device designed to combat incipient fires every fire extinguisher extinguishes fire by at least one of the following mechanisms? Ans- smothering, cooling, chain breaking, and saponification what is NFPA 10? Ans- standard for portable fire extinguishers what is a class A fire? Ans- ordinary combustibles such as textiles, paper, plastic, rubber, and wood what is a class K fire? Ans- combustible cooking oils what does AFFF stand for? Ans- aqueous film forming foam what is the PASS method for a fire extinguisher? Ans- pull, aim, squeeze, and sweep what is ventilation? Ans- the systematic removal of heated air, smoke, and fire gases from a burning building and replacing them with cooler air what is conduction? Ans- the transfer of heat within a body or to another body by direct contact what three mechanisms can heat be transferred from one body to another? Ans- conduction, convection, and radiation what is convection? Ans- the transfer of heat energy by the movement of heated fluids or gases, usually in an upward direction what is radiation? Ans- the transmission or transfer of heat energy from one body to another body at a lower temperature through intervening space by electromagnetic waves, such as infrared thermal waves, radio, or x-rays. what are the stages of fire development? Ans- incipient, growth, fully developed fire, and decay what is a rollover? Ans- a condition where the unburned fire gases accumulated at the top of a compartment ignite and flames propagate through the how gas layer or across the ceiling what is a flashover? Ans- stage of fire at which all surfaces and objects within a space have been heated to their ignition temperature and flame breaks out almost at once over the surface of all objects in the space what is a backdraft? Ans- instantaneous explosion or rapid burning of superheated gases that occurs when oxygen is introduced into an oxygen-depleted confined space what are the reasons for ventilation? Ans- life safety, fire attack and extinguishment, fire spread control, reduction of flashover potential, reduction of backdraft potential, an