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53 Cards in this Set
- Front
- Back
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What rpe does lfb provide |
BA Respirators Powered respirator protective suit |
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What are the two types of respiratory hazards? |
Chronic - immediate Acute - long term |
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Why is BA worn? |
To reduce the risk of respiratory injury to FF and provide safe working practices |
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What is the default level of rpe for fires and incidents representing an acute respiratory hazard? |
BA |
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When can you not use a DPFM? |
in a oxygen deficient or toxic atmosphere |
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when can you use a DPFM |
when hazard involves airborne particulates and not expected to deteriorate |
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what is the definition of respiration? |
the transport of oxygen from the outside air to the cells within tissue and the transfer or carbon dioxide in the opposite direction |
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what does air inhaled and exhaled contain? |
air inhaled contains 21% oxygen and 0.04% carbon dioxide and exhaled air contains 16% oxygen and 4% carbon dioxide |
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consumption rates are affected by what factors? |
physical exertion / physical fitness / stress |
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how does the body dissipate excess heat? |
through radiation (heat flows from hotter to cooler body) / convection (air currents flowing over body) / vaporization (blood cooled in lungs by inhalation of cool air) / evaporation (sweat evaporating) |
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how much and when should water be consumed after a wear? |
0.5L within 30 mins |
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what are the physiological effects of heat stress? |
deterioration of : co-ordination / reasoning / manipulation / visual skills |
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what are the physical effects of heat stress? |
heat cramps / heat exhaustion / heat stroke |
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to reduce heat stress what methods are used? |
rotate crews / holding and recovery area / drinking water / relax dress / cool hands, wrists, head in water / limit ba crews other work / LAS to attend and monitor |
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what is the working duration of ba set? |
31 mins at 50lpm |
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how much does the BA set weigh? |
15.5 kg |
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what is the BA set? |
self contained , two stage , open circuit , positive pressure / compressed air / breathing apparatus |
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what features does the BA set have? |
positive pressure first breath activated / speech diaphragm / additional flow / stable air supply low breathing resistance |
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what are the face mask features? |
anti dermatic rubber with double reflex seal / 5 strap adjustable harness / neck strap and stud / impact + scratch resistant poly carbonate visor / inner mask to prevent misting and co2 build up / air controlled from medium pressure supply hose via first breath button / air flows into main mask via two ports / air drawn into inner mask by two inhalation non return valves / exhaled air closes ldv and exits through spring loaded exhalation valve / speech diaphragm |
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what are the three non kink hoses from the reducer ? |
medium pressure to LDV / medium pressure to second person connection / high pressure to electronic management unit |
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what does the bodyguard permanently show? |
remaining air / time to warning |
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what features does the bodyguard have? |
available air pressure / TTW / TOW / visual LED indicators |
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when does the bodyguard low battery warn? |
when it drops below 5.5v and beeps every 9 seconds. can be used for 2 hours |
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when does the bodyguard give pressure warnings? |
electronic at 84 bar / pneumatic at 74 bar / gives 12 minutes |
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what is the cylinder made from? |
carbon fiber wrapped around a seamless aluminium liner |
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what are the features of the SDBA cylinder? |
capacity of 8 litres of water / 2160 litres of compressed air at 300 bar / tested every 5 years to 450 bar / weighs 8.5kg |
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what are the features of the BA personal line? |
plastic covered kevlar / 6m / 1.25m divide at D ring / snap hook on standing part / identity disk on snap hook / karabiner on running end / |
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when is the personal line tested? |
on receipt / allocated at station or incident / after use / every 28 days |
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what are the features of the BA cable cutters? |
withstands 1000v A.C and 1500v D.C / tested on reciept / a+b test / after use |
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What does policy state for 1 ba wearer? |
must be in open air / in line of sight of ECO |
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what are the important elements of BA procedure at any incident? |
adhere to BA procedures / communication / teamwork / check pressure + TTW / check tementary regularly / understand BA supplements FF skills / effective briefing and de-briefing / awerness of physiological effects of working in hot humid atmospheres |
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what are the routine duties of a BA wearer? |
carry out A test when taking over set - following cyclinder change - testing spare set / inform cm or wm if passed 28 day test / report defects or missing items / keep face mask free from hair |
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what are the duries of an BA wearer at incident? |
A test taking over set or cylinder change / don + start in safe air / ensure 240 bar / establish and confirm call sign / hand ba tally to ECO |
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what is defined at working duration? |
time of first breath to operation of low pressure warning |
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consumption rates vary so all BA wearers must what ? |
regularly check bodyguard / monitor pressure remaining / return to ECP before low pressure warning / liase with ECO for turnaround times |
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in assessing working duration what should team leaders take into account? |
air taken to reach scene / work rate at scene / conditions within incident / exit route may deteriorate / info recieved from ECO + crews / consumption rates may be higher on way out |
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When must a BA team leader withdraw? |
uncontrolled loss of air / low pressure warning sounds / unwell or confused / faulty bodyguard guage / adsu or dsu sounds / member exposed to irrespirable atmosphere / loss of comms + telementary / if cannot withdraw as a team the go into entrapped |
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what are the principles of safe movement? |
make sure floor can take weight / check for obstructions before moving / check above before standing up / maintain physical - visual - audible contact / BA team ORA should determine safest and quickest way to achieve objectives |
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stairs have different characteristics such as? |
avoid stone staircases / metal staircases conduct heat and electricity / timber staircases are flammable |
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land marking can take place before entering a building by noting what? |
size of building or structure / position of building in relation to surroundings / position of appliances outside building / LFB equipment committed to building |
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once inside crews should take note of features such as what? |
which wall they are following / position of fixed features / how many and types of compartment they pass through / construction and textures / other features such as carpets |
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What life risk information should the IC gather en route |
Numbers / ages, mobility, dependencies / known location an activity / fire survival call info / location in relation to fire |
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What is the minimum role of search Co ordinator? |
Watch manager |
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IC should select best search method by taking into account what? |
Any pre planning / number and location of people involved / type of structure to be searched / scale and complexity / hazards and risks / other tasks to be achieved |
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Where can a search be briefed to commence? |
Point of entry / point of greatest danger for casualties / close to seat of fire / other designated points |
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What are the two types of search used by LFB? |
Directional and compartmental |
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What are the advantages of compartment search? |
It is mapped out systematically / suitable for a range of structures |
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What are the limitations of compartment search? |
Not possible to clear large compartments / fully understanding brief is essential |
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What are the advantages of directional search? |
Systematic and simple / suitable for smaller structures |
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What are the limitations of directional search? |
Multiple teams to ensure search of compartments / does not clear compartments / potential to pass fire compartment |
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On location a casualty what should a BA team do? |
Alert rest of crew / inform eco of casualty and location / make assessment / carry out secondary sweep / take gauge reading |
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What are the methods of rescuing a casualty? |
One person / two person / three person |
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What is considered a heavy casualty? |
125kg / 20 stone |
