PCT #2 Flashcards
What is the Flammability range, LEL, UEL?
-Flammability range: concentration range of a gas or vapour that will burn or explode if an ignition source is present. The limits of the flammable range are between the UEL and LEL.
-Ideal Mixture: (most efficient mixture, is the ratio of fuel to air that will burn with the maximum intensity and efficiency
-LEL: lowest concentration of a gas or a vapor in the atmosphere that will ignite in the presence of an ignition source.
-UEL: highest concentration of a gas or a vapor in the atmosphere that will ignite in the presence of an ignition source
What are some methods of containment for HAZMAT?
-Up-righting and sealing leaking containers
-Allowing the leak to continue then handling appropriately
-Plugging and patching leaking containers
-Closing valves and closing and tightening lids
-Damming, diverting, dykking, retention
When inside a fully encapsulated gas suit, what are you protected from?
-Liquids
-Solids
-Gases
-Vapours
Where a high level of splash protection is required
Where a harmful gas or vapour is present
Fill in the table for the different gases and alarm levels on the Microrae:
Illustrate and label the decontamination corridor:
What are the 4 basic functions of a sprinkler system?
-Detect the presence of fire
-Locate the area involved in fire
-Raise the alarm, both with the occupants of the building and the fire brigade
-Attack the fire
What does EWIS stand for and what is its purpose?
-Emergency Warning Intercommunication System
-Required in larger buildings and buildings over 25 metres in height. -Allows occupants to be alerted to an emergency situation via an alert tone, and/or be told to evacuate
-Instructions can also be issued from the EWIS panel to all building occupants via a public address system.
-Two way communications are available through the Warden Intercom Phones (WIP).
List types wet and dry alarms:
Wet: Sprinkler Systems
Dry: Smoke, Heat and Flame
What can cause false alarms?
-welding, cutting, or grinding.
-Interference with wiring
-Rainwater can leak into the back of the detector
-Improper installation or maintenance
-Sprinkler heads knocked off
-Activation from exhaust emissions
-Steam
Label the components of a sprinkler system:
What are symptoms of heat stroke and heat exhaustion?
Stroke: Cyanosis, difficulty walking, collapse, unconsciousness
Exhaustion: Dizziness, lethargy, Increased heart rate, nausea, abdominal discomfort
What are the components of the Scott Propak SCBA?
Harness and backplate
Cylinder band and clamp
Cylinder connector assembly
Cylinder
Pressure reducer
Rescue second mask attachment
Pressure gauge and warning whistle
Demand valve and supply hose
Facemask
First breath mechanism button
What are the four irrespirable atmospheres?
Smoke
Toxic fumes and gases
Extreme temperatures
Oxygen deficient
Outline the procedure for an entrapment:
-Send a ‘RED’ radio message with condition, assistance needed, location and cylinder reading.
-Activate DSU, make tapping noises to alert crew to location
-Remain calm and avoid exertion, get in a comfortable position
-If charged branch is available, saturate surroundings
-move to a safe area near load bearing structure, windows and doors
List the components of the stage 2 BA control board:
BA stage 2 control board
Siren
Entry control officer
On deck crew.
When and where to wear BA?
Whenever entering a structure or atmosphere that is considered as an irrespirable atmosphere.
You would only doff BA when clear of the structure, or hot zone and in clean fresh air.
Why would you take charged hose line while performing search and rescue?
Allows for means of controlling the environment or dealing with an escalation of fire conditions.
It also gives Firefighters a means of readily identifying the exit location.
Types of compressed gas labels
LPG Red triangle
CNG Red triangle
What are 4 ways of determining if a vehicle is LPG (Liquid Petroleum Gas)?
-A red square or diamond mounted in the centre of the number plate with LPG
-Toggle switches on the dash to allow change from LPG to petrol
-The gas cylinders
-Gas cylinder filling points
What are 2 ways of determining if a vehicle is CNG (Compressed Natural Gas)?
-A red diamond on the number plate with CNG lettering
-Lack of large mixers or regulators in the engine compartment
What is the isolation procedure for a damaged service gas line?
-Have fire protection ready
-Wear full structural and BA
-Utilise a gas clamp
-Tools for digging, scooping earth
-If isolating a main, clamp either side of damage (mains are usually ring mains)
What is a BLEVE and some indicators of it occurring?
Boiling Liquid Expanding Vapour Explosion
Occurs when a gas cylinder is involved in heat, and suffers from structural damage to the cylinder causing an explosion
Indicators:
-Discolouration of cylinder,
-Distortion of cylinder
-Relief valve activation
-Relief valve whistling getting louder
What information can be found on confined space entry permits?
Part 1: Preliminary information
Part 2: Isolation
Part 3: Other precautions
Part 4: Atmospheric testing requirements
Part 5: Personal protective equipment
Part 6: Personal entering/vacating
Part 7: Authorisation
What are 3 methods for isolating services in a confined space context?
-Isolate dangers from confined space
-Isolation of moving parts
-Turn off at the source
-De-energise and lock-out
-De-energise and tag-out
What are six uses for aerial appliances?
-Rescue and recovery
-Placing personnel and equipment on a building
-Water tower
-Lighting tower
-Observation platform
-Crane
Where are the 4wd chains kept?
Rescue 48, 49
What are some considerations for positioning the appliance?
-Position as close as possible to the rescue incident without encroaching on the scene
-consider scene/evidence preservation.
-Allow access/egress for other emergency vehicles
-Position vehicles so as to maximise the effect of the on-board lighting system.
-Topography of the surrounding area, including bends in the road, crests etc.
-Water run-off from pump or firefighting activity
Considerations for restowing an appliance
Some specialty equipment may need to be relocated from the original appliance to the new replacement appliance. EG TICS and Microraes These items should be noted as relocated.
What are the 5Rs?
Report the fault to the Station Officer.
Rectify the problem at Station (if possible).
Replace or exchange the item.
Repair: Liaise with the ESA Workshops or Spec Ops.
Re-stow: It may be necessary to re-stow the entire appliance
What are the 3 main functions of the Resus Kit?
Oxygen Therapy
Oxygen Resuscitation
Suction
What is involved in the Daily check for each of the 6 main components of a Resus Kit?
-Open cylinder and check for at least 100 Bar (10,000 kPa)
-Check function of the oxygen therapy outlet by rotating the recessed flow control valve on the pressure reducer
-Connect demand valve and resuscitator bag to the patient valve, squeeze the bag and check demand valve functions by refilling bag
-Check suction by pressing button valve, cover suction inlet hose and feel for air coming out of suction catheter line
-Close the cylinder
Release pressure (suction button valve or squeeze resuscitation bag)
-Check inventory
List some gaining access tools and their location on the appliance:
Sledge hammer- offside first pocket
Halligan tool- Offside first pocket
Axe- Offside first pocket
Toolbox- Rear appliance pocket
Why is it important to write notes in the blue book when carrying out a gaining entry technique?
In case the scene needs to be investigated, any gaining access methods can be appropriately accounted for and documented .
What are some contemporaneous notes you might enter into the blue book?
made during and incident or as soon as possible afterwards to collect accurate and true information in regard to an incident.
-signs of intentionally lit fire
-the cutting of a seatbelt in an MVA to extract a patient
-actions of crew in a rescue
Label the monocoque diagram
