chapter 8 Flashcards
How many pounds per square foot is added to the roof when a PV module is installed
3 to 5 pounds
What should the number of seconds between lightning flash and thunder be divided by to determine the distance the lightning is from you
5
What is the best course of action when dealing with a fire in a large wind turbine
Watch from the perimeter of a large large collapse zone
Which type of clouds would indicate high winds that may produce strong down slope winds if they surface
Lenticular
What is a by product that responders should be aware of in battery room
Hydrogen gas
What can cause water to leach into surrounding gravel and dirt beds
Damage sewer drain system
Which weather aspects is the most important to the firefighter
Wind
Which is one of the most common utility gases
Propane
How much of the collapse height should be added when establishing control zones
50%
What type of power is created by the backup generator
DC
What should the Iso be especially wary of when watching the weather for a significant change
Sudden calm
What should be used to communicate an imminent threat on the fire ground
Radio
Which of the following has a water collection hazard
Subterranean vault
Up to what size concentric ring can be create from a downed power line
30 feet
What helps to differentiate solar thermal panels from PV panels
Piping in the solar thermal panels
What size area should be cleared when dealing with overhead power pole fires
Distance between two poles
What is the unit of measure for resistance of electrical current
OHm
Which would keep the smoke from dissipating in the outside air
High Humidity
Where does decontamination occur
Warm zone
What is used to regulate the voltage needs within a building
Transformer
What is found in large transformers
Oil
What color diamond is sure to indicate a vehicle that is powered with propane
Black
What color is used to indicate a medium voltage drive train
Blue
What is the minimum distance from a downed power line that the firefighter should maintain
10 feet
What fuel is typically used to fuel the electrical generator in a locomotive
Diesel
What happens when heat is applied to a pressurized system
Pressure increases
Where are air brake chambers located on semi truck tractors
Behind each wheel assembly attached to the axle
How should the firefighter move away from the area if tingling is felt in their boots
Shuffing
What is the minimum size hall that would indicate the possibility of a possible tornado
1/4 inch
Which should be done when fighting fires near downed power lines
Use a high pressure fog nozzle
Which is not correct about the wind turbine
Only the atmospheric wind causes movement
What should dictate what type of avoidance zone is needed
Severity of the threat
Where must a decal or sticker be located on the vehicle that uses compressed natural gas as fuel
Right rear portion
What color is used to indicate that high voltage is used in the vehicles drive train
Orange
What size tank would require a minimum 1 mile evacuation distance when the threat of a BLEVE is present
More than 18,000 gallons
How can most hazards associated with building electrical components be eliminated
Shut off power at the main
Which is not a hazard associated with drive/brake systems
Belts
Where would the tingling be felt when arcing potential is present
face
How many different wire are usually wrapped into one sheath in electrical wires inside buildings
Three
Which is Not a correct statement about electrical shock hazards
Fire hose operations are safe around energized power lines
What property of electrical systems is based on their being ground, insulated, and circuit protected
Integrity
Hazardous energy
Is defined as the unintended, and often sudden, release of stored, residual, or potential energy that will cause harm if contacted
Incidents involving electrical equipment, such as _____ and ______, are especially dangerous
Pad transformers and downed wires
The most common utility gases
Are propane and natural gas(methane)
______ and ______ should be mandatory safety equipment for all flash flood responders
Personal floatation devices and rope throw bags
Vehicles powered by compressed natural gas (cNG) or propane are required to
Have a decal or sticker on the right rear portion of the vehicle and adjacent to refilling location
