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BA AND FOAM > BA > Flashcards

BA Flashcards

1
Q

TWO TYPES OF BA

A

standard duration ( SDBA ) and extended duration ( EDBA)

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2
Q

what does acute mean

A

immediate risk of

injury if RPE removed

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3
Q

what does chronic mean

A

long term risk to health but not immediate risk of injury

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4
Q

what is the default RPE for fires and other acute respiratory risks

A

BA

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5
Q

what are only

used in non toxic oxygenated environments

A

Dual purpose face masks (DPFM) with P3 particulate filter cartridge

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6
Q

Air and BA is 21% oxygen, 0.04% CO2 and exhaled air is..

A

16% oxygen and 4% co2

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7
Q

what are some consumtion factors

A 
1.
Physical exertion 
2.
Physical fitness
3.
Stress
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8
Q

Four ways body dissipates excess heat:

A

1) radiation - heat from hot to cold areas
2) convection- cooling by air currents over the body
3) vaporisation- blood is cooled in lungs by air
4) evaporation- sweat covers skin and evaporates

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9
Q

Age, weight, health and fitness effect how body responds to what

A

heat stress

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10
Q

how much fluid intake should you have

A

2 litres a day when wearing BA and half a litre

watching 30mins of strenuous BA use

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11
Q

Heat stress psychological symptoms:

A 
1.
Coordination 
2.
Manipulation
3.
Visual skills
4.
Reasoning
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12
Q

Heat stress physiological symptoms 2:

A

1.
Heat cramps (caused by salt loss in sweat)
2.
Heat exhaustion (thirst, fatigue, nausea, confusion)
3.
Heatstroke (medical emergency, stop swearing, unconscious, convulsions)

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13
Q

Minimising heat build up:

A 
1.
Rotating crews to reduce exposure
2.
Recovery/holding area in shade
3.
Drinking water available
4.
Relaxing dress when in hol
ding/recovery area
5.
Radial cooling (hands, wrists, neck and head)
6.
Avoid using BA crews for other hard jobs
7.
LAS monitoring crews health
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14
Q

Breathing apparatus used by the LFB

A

Drager PSS 7000 Compressed Air

breathing apparatus set

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15
Q

Working duration of dragger pss 7000

A

31mins at 50lpm consumption rate

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16
Q

weight of dragger pss 700

A

15.5kg

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17
Q

what does STOPCAP mean

A 
self contained
two stage
open circuit
positive pressure
compressed air breathing apparatus set
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18
Q

checks for ba set

A

positive pressure, first breath achieved, speech diaphragm, additional flow button, stable air supply with low breathing resistance

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19
Q

complete ba set

A

bodyguard key, tally, personal line, cable cutters, cylinder, cylinder cover and log book

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20
Q

what face mask is used

A

face protection system 7000 (fps)

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21
Q

standard issue size for mask?

A

M2

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22
Q

what is the face mask made from?

A

anti dermatitis rubber with double reflex seal

23
Q

feauture of outert mask

A

five strap adjustable harness with neck strap,

Impact resistant polycarbonate visor with airtight seal

24
Q

what does inner mask do?

A

prevent the build up of co2 and misting

25
Q

how is air controlled in mask?

A

controlles from medium pressure supply hose to mask via first breath button

26
Q

how is air drawn into main mask?

A

two ports inside visor

27
Q

how is air drawn into the inner mask?

A

inhalation non return valves

28
Q

how is air exhaled in mask?

A

exhaled air closes lung demand valve which cuts of air supply and pushes into outer atmosphere via spring loaded exhalation valve

29
Q

why is it a dual purposes face mask? (dpfm)

A

can disconnect demand valve and replace it with cartridge to convert into respirator

30
Q

what does lung demand valve do?

A

supplies air at a breathable pressure

31
Q

feauture of lung demand valve?

A

has automatic first breath mechanism which allows for opening of cylinder without putting on mask

Additional flow button on centre of outer rubber casing

32
Q

after first breath air flows through at a positive pressure what does this mean

A

inside of the mask has higher pressure than outside atmosphere preventing entrance of contaminated atmosphere

33
Q

how many quick release couplings does ba set have?

A

BA set has one inline and one second person connection with quick rel
ease
couplings

34
Q

what does the quick release couplings do?

A

allows wearer to supply or receive air in an emergency

35
Q

what does the REDUCER do?

A

reduces cylinder pressure to breathable pressure

36
Q

where do the 3 air hoses leade on the reducer?

A

1) high pressure hose to electronic management unit
2) medium pressure hose to LDV providing air to mask
3) medium pressure air hose to second person connection

37
Q

what does the bodyguard 7000 do

A

gives visual indication of air remaining and time to warning device in minutes

38
Q

feature of bodyguard 7000

A 
monitor available air pressure
time to warning display
led and audible warnings
visual LEDs
motion sensor and  autyomatic distress signal unit (ADSU)
button activated distress signal
low bat signal 
10 second backlight from left hand button
39
Q

what are the visual led on bodyguard 7000

A

operational mode,key removed
warning mode
telemetry signal

40
Q

what happens after 30 seconds of non movement

A

pre alarm emits, if then move within 15 seconds it goes off

after furthert 15 seconds only inserting key will switch off alarm

41
Q

what happens if the bodyguard 7000 drops below 5.5 volts?

A

display empty battery icon and beep every 9 seconds

42
Q

how long can bodyguard 7000 last

A

2 hours

43
Q

what does low pressure warning device do

A

audible warning that working duration has expired

44
Q

what are stages of low pressure warning device?

A

below 84 bar, electronic warning device and led sound intermittently
below 74 bar pheunamitc whistle blows until air exhausted ( should last 12 minutes at 50lpm at this point)

45
Q

what can body alarm be affected by?

A

high strength magnetic flux

46
Q

whole BA SET

A 
pss 7000 BA set 
Face mask FPS 7000
lung demand valve
quick release couplings
reducer 
bodyguard 7000
low pressure warning devices 
BA tally
backplate
telemetry module
harness
47
Q

what is BA tally used for

A

Used to record details of each wearer, tally is secured to bodyguard key

48
Q

what colour are the tallys?

A

yello (SDBA) and red (EDBA)

49
Q

what do the tallys contain?

A

1) role and name of wearer
2) cylinder pressure
3) actual entry time into risk area

In radiation risk, dosimeter reading can be recorded on reverse side of tally

50
Q

what does backplate do?

A

attaches air cylinder to reducer

51
Q

what is back plate made off?

A

carbon fibre composite

52
Q

feature of backplate?

A

set height settings (SML) which forms part of A and B Test
Neoprene coated belt, designed to have set low on back to reduce shoulder strap burns

53
Q

what Is PSS merlins telemetry module?

A

Battery powered unit with integral digital radio transmitter/receiver and
antenna
Audible and visual alarm signal data can be received/transmitted from the BA set to the Entry Control Board

54
Q

harnsess use

A

Neoprene coated with place for p

ersonal line and pouch

BA AND FOAM (12 decks)

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