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35 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Breathing Apparatus set is called? |
MSA G1 Electronic weighing 14.67kg |
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How much O2 does the body absorb? |
One fifth of the inhaled oxygen which is 21% percent, therefore only 4% is inhaled |
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Composition of Air inhaled and exhaled? |
Inhaled; Nitrogen 79.04% Oxygen 20.93% Carbon Dioxide 0.03% Exhaled: Nitrogen 79.04% Oxygen 16.96% Carbon Dioxide 4% |
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HOTS acronym? |
High temperatures Oxygen deficiency Toxic atmospheres Smoke concentration |
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Two types of self contained BA? |
Open - we use the most, air exhaled by BA is expelled to atmosphere Closed - up to four hours, unused oxygen to re-circulated |
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Working duration calculation? |
Air contents of cylinder in Litres/ consumption rate in litres - exit decon time in mins
2040/60LPM - 10mins = 24 mins
Or quick calculation 300bar/10 - 10mins = 20mins 100bar/10= 10mins low pressure 55bar/10= 5 mins very low pressure |
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Before entering a building what is the minimum level of air? |
80% which is 250 Bar |
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BA with Cylinder? |
Back (Definition) |
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BA without cylinder front? |
Back (Definition) |
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BA without cylinder rear? |
Back (Definition) |
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Eight major components of a BA? |
Cylinder Carrier frame and harness Power/battery module/Control Module Voice Projection Speaker Demand valve Face mask Pressure reducer/Mechanical Low Pressure Whistle Buddy breather |
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Carrier frame features? |
Flame retardant composite nylon with backplate, houses cylinder, waist belt, chest strap, shoulder harness, grab handle 450kg and carrier handles 180kg, adjustable lumbar waist belt, spring clip, cylinder retention strap and quick release cylinder buckle Harness is composed of Kevlar webbing with two shoulder straps with friction pads and tunnels to house the hose and speaker electrics. Harness made from flame retardant retro-reflective material for increased visibility and durability. Directional clips |
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Cylinder features? |
6.8L 2040L of air 300 bar capacity 7kg Constructed out of carbon fibre wrapped aluminium composite Has excess flow safety valve, stops cylinder from becoming a projectile Haemostatic pressure Tested every 5 years at 450 bar Cylinder hand wheel with ratchet mechanism |
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Pressure reducer features? |
Reduces cylinder pressure from high pressure down to intermediate pressure and is further reduced to atmospheric pressure in the demand valve to a pressure that is respirbale by operator 700 litres per minute down to 7 to 10bar at face mask |
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Mechanical low pressure warning whistle? |
When cylinder pressure drops below 55+- 5 bar |
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Battery for BA? |
Low battery warning, which is one red bar will give you two hours of use, fully charged battery will take approx 4 months to fully lose charge when left in BA and kept in sleep mode. To check battery hold down for 5 seconds to view level Low battery indicated on HUD but yellow battery light flashing BA not able to re-enter unless battery has been replaced Battery should only be recharged when low battery warning activated |
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Buddy lights signals? |
4 on the rear 2 control module One on demand valve Provide 360 degree visibility of cylinder pressure status Green 300-100 bar Yellow 99 - 60 bar Red 59 - 0 bar |
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BA Alarms? |
Back (Definition) |
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Motion alarm 4 levels? |
Level 1 17.5 seconds Level 2 20 seconds Level 3 25 seconds Level 4 30 seconds full alarm, press reset button twice within one second to reset |
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Demand Valve function and diagram? |
Controls air flow into the face mask, provides a positive pressure environment |
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When is Buddy breather used? |
BA operator air supply fails Cylinder drops below 100 bar and travel time exceeds air supply time FF hurt or trapped |
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Functional tests? |
Battery status check - hold down for 4 seconds Control module check - check that they are within 10 bar Pressure seal and demand valve check - open cylinder fully, must be 250 bar, then close cylinder and wait 60 seconds, if pressure dropped less than 10 bar check is good, if it has dropped more than 10 bar check O ring and no debris present, try again, if fails again try another cylinder, if fails again set out of operation tag and send off Motion and manual alarm checks - allow all levels of motion alarms to go off, test manual distress Audible warning signals - open then close, activate purge and check different alarms with pressure drops, 99-60 yellow, 59 -0 red, below 55 mechanical low pressure warning whistle should sound |
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Start up procedure? |
Check cylinder pressure - open cylinder and listen for leaks Fitting face mask - place chin in, bottom straps first and work way up Check face mask seal - breathe to activate first breath mechanism, hold breath listen for leaks, pull mask forward to ensure air flow, check purge |
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Disinfecting face mask? |
Ensure demand valve remains dry - air can cause freezing due to pressure Pre-mixed diluted Biogard diluton: 250ml for 5L ratio 1:3 1:80 concentrate or 1:20 diluted Biogard can only be used for 24 hours and safety goggles/gloves must be worn 10mins in water, 10mins in biogard and rinse in running water Dry with lint free cloth and ambient air, ensure demand valve is completely dry |
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Faulty BA steps? |
1. Notify OIC 2. Remove BA from vehicle 3. Div A - complete BA fault tag and attach to BA Div B - complete CFA state PPE&C management centre fault report and submit to State PPE&C management centre 4. Arrange for replacement of BA set Div A - from zone station or FS38 Div B - State PPE&C management centre 5. Send BA away as complete unit Div B - send to State PPE&C management centre |
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BA Tally Tags and BA control boards? |
Info on tally tag - station no., name, set no., cylinder pressure, time in BA control board, held at BA entry point and collect BA tally tags |
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Emergency evacuation signal? |
Evac - 3 short blasts of 1 second each Cease operation - 1 blast of 3 seconds Resume operations - 1 blast for 3 seconds followed by 1 blast for 1 second 3 second interval will occur and the signal is repeated until site is evacuated or as deemed necessary |
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Battery on carrier? |
Rechargeable lithium ion battery When BA is not in use hold down for 5 seconds to check battery level HUD display low battery indicated by yellow battery flashing |
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Piezo alarm speakers features? |
Two either side of the power module on the rear of the carrier frame minimum 100 decibels |
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Control module features? |
Analogue gauge, manual alarm button, LCD and two buddy lights Cylinder pressure, battery level, estimated time remaining, all alarm conditions Primary - cylinder pressure and alarm status indicators Secondary - remaining time to zero pressure base on consumption rate, temperature icon and battery status, also alarms |
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Demand valve features? |
Valve assembly that controls the flow of air into the face mask, has a park button, purge and detachment button Maintains a positive pressure in the face mask, has HUD lights and also two small microphones Pneumatic and electronic hose connection to cylinder Reduces pressure down to atmospheric pressure Has a first breath mechanism which when first breath is taken a lower air pressure is created on one side of the mechanism |
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Face mask features? |
HUD display Full view polycarbonate visor, quick release tabs and head harness with a neck strap 5 strap head harness Inhalation valve where connection of demand valve Nose cup with a reverse flange facial seal and speech diaphragm Nose cup reduces CO2 m, removes dead air and prevents face mask from fogging up Nose cup has two mushroom valves/inhalation valves either side, one inhalation valve at the top of the nose cup and a exhalation valve on the inside of the nose cup which removes carbon dioxide, dead air and fogging, exhaled air is removed directly to ambient air |
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How to test the low air alarm? |
1. Open the cylinder valve fully to fully pressurise the BA 2. Close the cylinder valve fully 3. Activate purge button of the demand valve so air pressure is released 4. When the pressure displayed on the control module and analogue gauge drop below 100bar, ensure: flashing yellow in HUD, buddy lights yellow, electronic low pressure warning must sound from 99-0 every 10 seconds, control module lcd backlight yellow 5. When the pressure on the control module and analogue gauge drops below 55 +or- 5 bar: flashing red LED in HUD, the mechanical low pressure warning whistle should be sounding, all buddy lights flashing red, control module lcd backlight red Alarm continues until air pressure is 0 6. When system falls below 15 bar, put control module into sleep mode by pressing reset button twice within one second 7. Keep purge button pressed to release any remaining pressure in the system 8. Release the purge button 9. Park the demand valve by pressing the red detachment button If nothing functions correctly the BA must be removed from service |
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Safety Procedures PACT? |
P- PPC/PPE and equipment A- Air, is your partners BA pressurised, check buddy lights, green is go >250 bar 4 lights you’re in the door 3 lights maybe - check pressure 2 lights you do not do Positive pressure test - pull mask away from face C- Communications - voice on projection speaker is working, portable radio, who are you? Team designation T - Tally tag, task - BA tally tag been collected and filled out, task your objective, tactics how? |
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What are four actions you should consider when entrapped? |
Manually activate the alarm on control module, make your way to the nearest point of entry Sit down, remain together and do not remove BA set Use hose line to safeguard team Notify BA entry and the IC of situation using radio |
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