CPS EXAM 2 WITH ALL CORRECT & 100% VERIFIED
ANSWERS|ACTUAL COMPLETE EXAM|ALREADY
GRADED A+
reaction between air and combustible material which release energy and is self sustaining.
✔Correct Answer-Fire
Sudden release of energy which may or may not be related to a fire. A rapidly expansion of gases
resulting in a rapidly moving pressure or shock wave. A rapid release of energy. ✔Correct Answer-
Explosion
heat, fuel, and oxygen make ✔Correct Answer-Fire triangle
to complete the fire triangle you need what? ✔Correct Answer-heat, fuel, oxygen
Fires can be prevented by removing any single leg from the fire triangle. Which is usually what?
✔Correct Answer-ignition source
Mixture will not burn, it is too lean: or leanest mixture of fuel that will support combustion.
✔Correct Answer-Lower flammability limit
Mixture will not burn, it is too rich: or richest mixture of fuel that will support combustion.
✔Correct Answer-upper flammability limit
What does LFL stand for ✔Correct Answer-Lower Flammability Limit
What does UFL stand for? ✔Correct Answer-Upper Flammability Limit
Oxygen concentration below which combustion is not possible, with any fuel mixture; or lowest
concentration of oxygen which will form a flammable mixture. ✔Correct Answer-Limiting Oxygen
Concentration
What does LOC stand for? ✔Correct Answer-Limiting Oxygen Concentration
Temperature above which a liquid produces enough vapor to form an ignitable mixture with air; or
lowest temperature where a non propagating fire will occur above a pool of liquid ✔Correct
Answer-Flash point
What does AIT stand for? ✔Correct Answer-Auto-Ignition Temperature
Temperature above which adequate energy is available in the environment to provide an ignition
source; or,
Temperature where the liquid supplies sufficient heat to cause ignition. ✔Correct Answer-Auto-
Ignition Temperature
Material with an autoignition temperature below room temperature ✔Correct Answer-Pyrophoric
material
Minimum Ignition Energy to ignite a flammable mixture ✔Correct Answer-Minimum Ignition
Energy
, What does MIE stand for? ✔Correct Answer-Minimum Ignition Energy
As temperature increases the UFL and FLF does what? ✔Correct Answer-Increase and decrease
As the pressure increase the UFL and LFL does what? ✔Correct Answer-UFL increase and LFL
mostly unaffected
a fire or reaction which propagates at below the speed of sound. ✔Correct Answer-Deflagration
a reaction where the reaction front travels at greater than the speed of sound. ✔Correct Answer-
Detonation
Explosions present 2 distinct hazards what are they? ✔Correct Answer-Blast overpressure and
flying debris
how much of the energy of the explosion is turned into work as opposed to heat. ✔Correct
Answer-Explosion efficiency
pressure measured with the element 90° to the blast wave. This is what we work problems with
✔Correct Answer-Side-on overpressure
pressure measured with the transducer aiming at the blast wave ✔Correct Answer-Reflected
overpressure
Which is stronger Reflected overpressure or side-on overpressure ✔Correct Answer-Reflected
overpressure
Sudden release of large quantity of vapor
Dispersion of the vapor throughout area mixing with air
Ignition of the resulting cloud ✔Correct Answer-Vapor cloud explosions
What does BLEVE stand for? ✔Correct Answer-Boiling liquid expanding vapor explosion
Fire heats tank pressurizing liquid.
Tank fails.
Stored energy of hot liquid is turned to work as liquid expands to vapor. ✔Correct Answer-Boiling
liquid expanding vapor explosion
Checklist, hazards surveys, Process Hazards Analysis (PHA), Safety Review are ways to identify what?
✔Correct Answer-Process Hazard Identification Methods
Can identify hazards due to fixed equipment and procedures.
Requires a large effort.
Provides a controlled mechanism to consider the things that can go wrong.
Customized for each company.
Improves process performance, quality, etc. ✔Correct Answer-Hazard and Operability Studies
(HAZOP)
Select an area of the process called a NODE, e.g. reactor, pump, cooling water, agitator, blender.
Apply a PROCESS PARAMETER, temperature, pressure, level, flow
ANSWERS|ACTUAL COMPLETE EXAM|ALREADY
GRADED A+
reaction between air and combustible material which release energy and is self sustaining.
✔Correct Answer-Fire
Sudden release of energy which may or may not be related to a fire. A rapidly expansion of gases
resulting in a rapidly moving pressure or shock wave. A rapid release of energy. ✔Correct Answer-
Explosion
heat, fuel, and oxygen make ✔Correct Answer-Fire triangle
to complete the fire triangle you need what? ✔Correct Answer-heat, fuel, oxygen
Fires can be prevented by removing any single leg from the fire triangle. Which is usually what?
✔Correct Answer-ignition source
Mixture will not burn, it is too lean: or leanest mixture of fuel that will support combustion.
✔Correct Answer-Lower flammability limit
Mixture will not burn, it is too rich: or richest mixture of fuel that will support combustion.
✔Correct Answer-upper flammability limit
What does LFL stand for ✔Correct Answer-Lower Flammability Limit
What does UFL stand for? ✔Correct Answer-Upper Flammability Limit
Oxygen concentration below which combustion is not possible, with any fuel mixture; or lowest
concentration of oxygen which will form a flammable mixture. ✔Correct Answer-Limiting Oxygen
Concentration
What does LOC stand for? ✔Correct Answer-Limiting Oxygen Concentration
Temperature above which a liquid produces enough vapor to form an ignitable mixture with air; or
lowest temperature where a non propagating fire will occur above a pool of liquid ✔Correct
Answer-Flash point
What does AIT stand for? ✔Correct Answer-Auto-Ignition Temperature
Temperature above which adequate energy is available in the environment to provide an ignition
source; or,
Temperature where the liquid supplies sufficient heat to cause ignition. ✔Correct Answer-Auto-
Ignition Temperature
Material with an autoignition temperature below room temperature ✔Correct Answer-Pyrophoric
material
Minimum Ignition Energy to ignite a flammable mixture ✔Correct Answer-Minimum Ignition
Energy
, What does MIE stand for? ✔Correct Answer-Minimum Ignition Energy
As temperature increases the UFL and FLF does what? ✔Correct Answer-Increase and decrease
As the pressure increase the UFL and LFL does what? ✔Correct Answer-UFL increase and LFL
mostly unaffected
a fire or reaction which propagates at below the speed of sound. ✔Correct Answer-Deflagration
a reaction where the reaction front travels at greater than the speed of sound. ✔Correct Answer-
Detonation
Explosions present 2 distinct hazards what are they? ✔Correct Answer-Blast overpressure and
flying debris
how much of the energy of the explosion is turned into work as opposed to heat. ✔Correct
Answer-Explosion efficiency
pressure measured with the element 90° to the blast wave. This is what we work problems with
✔Correct Answer-Side-on overpressure
pressure measured with the transducer aiming at the blast wave ✔Correct Answer-Reflected
overpressure
Which is stronger Reflected overpressure or side-on overpressure ✔Correct Answer-Reflected
overpressure
Sudden release of large quantity of vapor
Dispersion of the vapor throughout area mixing with air
Ignition of the resulting cloud ✔Correct Answer-Vapor cloud explosions
What does BLEVE stand for? ✔Correct Answer-Boiling liquid expanding vapor explosion
Fire heats tank pressurizing liquid.
Tank fails.
Stored energy of hot liquid is turned to work as liquid expands to vapor. ✔Correct Answer-Boiling
liquid expanding vapor explosion
Checklist, hazards surveys, Process Hazards Analysis (PHA), Safety Review are ways to identify what?
✔Correct Answer-Process Hazard Identification Methods
Can identify hazards due to fixed equipment and procedures.
Requires a large effort.
Provides a controlled mechanism to consider the things that can go wrong.
Customized for each company.
Improves process performance, quality, etc. ✔Correct Answer-Hazard and Operability Studies
(HAZOP)
Select an area of the process called a NODE, e.g. reactor, pump, cooling water, agitator, blender.
Apply a PROCESS PARAMETER, temperature, pressure, level, flow
