3/4 Exam Flashcards
What is carbon monoxide’s flammable range
12.5% to 74% in air
What are the causes of oxygen deficiency
Oxidation combustion absorption bacterial action chemical reaction purging agents poor ventilation decomposition
List some other types of placarding in class nine, miscellaneous dangerous goods
Mixed load fumigation hazard marine pollutant
How many divisions of class nine materials
One
How many divisions for class eight materials
One
How many divisions of class seven materials
One
How many divisions of class six Materials
Two
How many divisions of class five materials
Two
How many divisions of class four materials
Three
How many divisions of class III materials
One
How many divisions of class two materials
Three
How many divisions of class one materials
Six
What are the nine classes of hazardous materials
1-Explosives 2-gases 3-flammable liquids 4-flammable solids/dangerous when wet 5-oxidizers and organic peroxides 6-toxic and infectious substances 7-radioactive materials 8-corrosive 9-miscellaneous hazardous materials
List the colors of placards and labels for specific hazards
Red- flammable orange- explosive white- toxic or infectious green- compressed but nonflammable, non-toxic blue- reactive black- corrosive yellow- oxidizer
When must be UN number be shown with the placard?
Shipments greater than or equal to 4000 kg
When must a placard be placed on all sides and ends
-Shipments greater than 500 kg -quantity or concentrations requiring an emergency response plan to be filed with transport Canada -for liquids or gases in direct contact with the container
When are placards used
Shipments greater than 450 L
When our labels used
Small containers up to 450 L
List the category position and color of the NFPA 704 diamond
Health - left -blue flammability -top -red reactivity -right -yellow special information -bottom -white
Define hazardous materials
Any material or substance, which even in normal use, poses a risk to health, safety, property, or the environment
What are the three types of facility and transport markings
Signs - on fixed sites NFPA 704 labels -10 cm x 10 cm required up to 450 L placards -diamond shaped 25 cm x 25 cm used in transportation of greater than 450 L
What do you do if there is flame impinging on a tank
-Cool the tank from top to bottom (the vapor area) -use master stream appliances -water must not be turning to steam; it must reach the container -large tanks failwithin 10 to 20 minutes -nonsurvival area 500 feet
What are the warning signs of a potential BLEVE
Pressure relief device is working pitch or sound gets louder pinging popping or snapping sounds are heard visible steam from tank up on cooling discoloration of shell at impingement bulge or bubble indicates serious localized heating of the vapor area
What is the explosive range of natural gas
5 to 15%
How is propane dangerous
Asphyxiant easily ignitable (450°C ignition temperature, 842°F) 1.5 times heavier than air subject to BLEVE
What is the proper name for the EFRS foam
AFC 185-Niagara 1-3% AR-FFFP
List the class A foam percentages and applications
0.1% deep seated fires in furniture, smoldering ground fires or heavy duff where penetration is required 0.1-0.5% wildland grass fires 0.5% structural firefighting with attached fog nozzles, woodland surface fires using foam nozzles 1% protecting structural exposures, forming barriers during the wildland firefighting operations
List the parts of a typical wildland fire
Head fingers rear flanks perimeter islands the green the black spot fire
What are the 3Rs of wildland firefighting
Retreat regroup reassess
Define the head of a wildfire
The fastest spreading leading edge of the fire and where the most damage occurs. if you gain control of the head of the fire you usually gain control over all of it
Define flanks in a wildland fire
Left and right sides of the fire when facing the head from the rear. if the wind shifts a flank may become a new head
Define fingers in a wildland fire
Long narrow strips of rapidly burning light fuel. if these are not controlled they form new heads
List the MX4 detectors alarms and ranges for O2 CO H2S LEL
O2 low at 19.5% high at 23% range 0 to 30% CO low at 25 ppm high at 50 ppm range 0 -500 ppm H2S low at 10 ppm high at 15 PPM range 0 -500 ppm LEL low at 10% high at 20% range 0 to 100% or 0-9999 PPM
Define the green in a wildland fire
The unburned area surrounding the fire
Define the black in a wildland fire
The area of blackened land consumed by the fire
Define island in a wildland fire
Unburned areas inside the fire area they are created by suppression actions, or by the fire meeting fuels that were too difficult to ignite. islands should be burned out to prevent re-kindle
Define spot fire in a wildland fire
Fires outside the main fire caused by wind carried sparks or embers. if these are not quickly controlled they may form a head and new fire area
Define the rear of a wildland fire
Sometimes called the heel. this area it is opposite the head, and because it burns more slowly it is often easier to control
Define the perimeter in a wildland fire
The boundaries of the fire, the complete length of the outside edges. This length changes as the fire continues to burn
What are the different types of fuels in wildland fires
Ground fuels surface fuels crown fuels
what are the responsibilities of the RIC crew
Establish RIC tarp in staging area located outside the hazard area continually size up the structure for potential issues determine potential egress points-ladder if necessary and place activated strobe pucks in the exits
What are the duties of the RIC sector officer
Assemble crew and ensure all necessary tools have been gathered and placed on the RIC tarp ensure RIC team has donned all PPE with the exception of regulator liaise with emergency safety officer to determine the best strategy for entry egress and locating victims maintain constant contact with ESO determine if second RIC is necessary upon exit replenish air and tools and be ready to reenter if so assigned
What are the RIC safety officers responsibilities
Assume the role of emergency safety officer -request another safety officer assigned assume control of rescue operations liaise with RIC sector officer- discuss best tactics manage additional resources as needed by RIC maintain communications between R I C and FC
How many lengths of Hi-Vol hose are on each unit
pumper 20 tanker 15 ladder 9 Quint 4
What are the variables of a flash over
Compartment size insulation qualities ceiling height ventilation
What factors influence the size of the inner circle in the vehicle extrication
Number and the condition of vehicles number of patients extrication needs hazardous conditions
What is the size of the outer circle in vehicle extrication
3 to 5 m in diameter around the inner circle influenced by topography and traffic hazards
What is look for within the outer circle
Hazards victims other potential problems should also ask questions of bystanders
Describe level D PPE
PPE in the form of a hardhat, steel toed safety boots, safety glasses -firefighter turnout gear -splash suit -safety boots -gloves -eye protection
Describe level C PPE
Same skin protection as level B, lesser degree of respiratory protection -splash suit -boots -inner /outer gloves -air purifying respirator (APR) -gloves, boots, zippers taped
Describe level B PPE
Highest level of respiratory protection with a lesser degree of skin protection -splash suit -boots -inner /outer gloves -SCBA -mask gloves boots and zippers taped
Describe level A PPE
Highest available degree of respiratory /skin /Eye protection Fully encapsulated vapor proof suit ->gloves and boots attached outer gloves and boots SCBA
How can hazardous material enter your body
Absorption injection ingestion inhalation
List of the levels of personal protective clothing
Levels A,B,C,D
List of the types of exposures in hazmat
Trace-MP Thermal radiation asphyxiation corrosive Etiological mechanical poisonous
In case of BLEVE how far should an area be evacuated
1200 m on large cylinders (4000 feet)