STCW Basic Training Exam 1 Questions and Answers 100% Pass

STCW Basic Training Exam 1 Questions and Answers 100% Pass _____________ is the result of incomplete combustion smoke Black or dark grey indicates a ______ fire or a _________ of oxygen hot, lack Chain reaction -you can have oxygen, heat, and fuel in the same place and still not have a fire -fuel and oxygen relationship must be balanced (i.e. in the flammable range) -heat must be sufficient to bring fuel to its ignition Fog Applicators -both high and low velocity extinguish fire by absorbing heat -can possibly help by reducing, but not eliminating the supply of oxygen -are used with the all purpose nozzle - there are three types: 60 deg 4 ft, 90 deg 10 ft, 90 deg 12 ft Fuel -only vapors burn -liquids and solids must first be vaporized -tendency of a substance to vaporize is an indication of its ability to burn -liquids vaporize more readily than solids Heat anything that produces the required temperature for ignition -sun -open flame -chemical reaction -sparks -friction How are gases produced? result of combustion, may or may not be toxic How do you stop a fire? Remove any of the components of the fire tetrahedron (i.e. remove fuel, oxygen, heat, or interrupt the chemical reaction) How does the spread of fire occur? result of equalization in temperature between fire and surrounding areas via conduction, radiation, and convection How is flame produced? result of conversation of the fuel to a state of blazing combustion How is heat generated? rapid oxidation of the material In Fire Fighting what 4 aspects do you need to keep in mind? -time is critical (fight the fire in the incipient stage) -awareness (know location/type of fire fighting equipment