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26 Cards in this Set
- Front
- Back
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What is the name of the BA set currently used by MFB/CFA? |
MSA G1 E |
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What is the size of the cylinder and from what is it constructed? |
6.8L Carbon fibre wrapped aluminium composite |
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A cylinder pressurised to 300 bar (300 atmospheres) contains 300x more air than it’s capacity for water. What equation then is used to calculate the air capacity of a cylinder? |
6.8L x 300 = 2040L (Fully charged cylinder) |
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Working duration of the BA varies according to what? |
-operators fitness/lung capacity -fatigue -ambient temperature -mental state/anxiety -work output |
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What is the function of the pressure reducer? |
Reduces the air pressure to an intermediate pressure which can then be further reduced by the demand valve and be respirable by the operator. The pressure reducer has a flow capacity of 700L/min. |
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When does the mechanical whistle operate? |
At 55 bar +/- 5 bar |
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You can enter/re-enter the fireground with a red battery. True or false? |
False |
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Buddy lights indicate air pressure status. How many bar do each of the following coloured lights indicate: Green Yellow Red |
Green: 300-100 bar Yellow: 99-60 bar Red: 59-0 bar |
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What are the BA modes of operation? |
Active mode: normal functionality Sleep mode: BA not in operation but checks for changes periodically/as needed No power: BA still operates but without electrical functions or battery/power |
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2 dashes show on the control module while it calculates time remaining. Time to zero is displayed after 3 minutes. True or false? |
True |
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How do you operate the manual alarm button? |
Hold the red button on the control module for 3 seconds |
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What are the motion alarms and when do they sound? |
Pre alarms (no movement) 1-3 sound at: -17.5s -20s -25s Full alarm, level 4: -30s |
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What is the function of the demand valve? |
-Regulates the flow of air into the mask based on operators rate of breathing -incorporates buddy light, mic, HUD lights, purge and park buttons |
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What is the face mask made from? |
Polycarbonate wide view mask with a soft rubber seal. It has a nose cup, 5 head harness straps and neck strap, speech diaphragm and mushroom valves. |
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What is the calculation for work duration of a full cylinder? |
2040L/60L - 10 34 - 10 minutes =24 minutes |
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When 2 BA sets are linked via buddy breather, air will be taken from the pressure reducer with the most air. How many litres per minute can be drawn from either cylinder? |
700L/min |
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What is a quick method of calculating work duration on the fireground? |
300/10 - 10 30 - 10 =20 |
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What is the minimum cylinder pressure required to enter the fireground? |
250 bar |
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Is the MSA G1 E an open or closed circuit system? |
Open |
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What does a fully charged BA set weigh? |
13.88kg |
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Which station services BA? |
FS38 South Melbourne |
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What is the purpose of light blue plastic caps on full cylinders? |
-Protects threading -Prevents dust and contaminants entering system |
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What pressures are indicated by these HUD status lights? |
300-271 bar 270-151 bar 150-100 bar 99-60 bar (flashing 30s upon activation) 59-0 bar (flashing continuously until shutdown) |
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What is the function of the excess flow safety valve? |
It is a mechanism that limits the flow of air if there is a catastrophic failure of the cylinder. It stops the cylinder becoming a projectile if the valve is accidentally sheared off. |
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What information is included on a tally tag? |
-Station number -name of wearer -set no. -cylinder pressure -time in (entered at BA entry point) |
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BA control boards should include: |
Stage 1: -clock -chinagraph pencil -working duration tables -space for 6 tags -spaces for time of whistle -space for other remarks
Stage 2: Same but holds 12 tally tags/had columns for more personnel |
