Retention Flashcards
What are the GP knots?
Overhand, bowline, clove hitch, round-turn, overhand, Rolling Hitch, Double Sheet Bend
Characteristics of a good knot?
T – easy to TIE
R – easy to RECOGNISE
U – easy to UNTIE
S – should not SLIP
S – not reduce STRENGTH
Ladder siting considerations?
H – Height (ladder reaches objective allowing for correct Projection & Plumbing)
P – Projection (distance the foot of the ladder is away from the building (4:1))
P – Plumbing (Ladder is perpendicularto the ground)
C – Clearances (When pitching there are no obstructions or hazards in path)
G – Ground condition (Ensure ground conditions are firm & stable)
Evacuation Horn Signals?
Evacuation: 3 Blast of 1 Second Duration
Cease Operation: 1 Blast of 3 Second Duration
Resume Operation: 1 Blast of 3 Second Duration, followed by 1 Blast of 1 Second Duration
HOTS?
H – HIGH temperatures
O – OXYGEN deficiency
T – TOXIC atmospheres
S – SMOKE concentrations
What is on a HZACHEM placard? List 6 items found on a bulk transport placard?
Substance, UN Number, HAZCHEM, Contacts, Class label, specialist advice.
Examples of the 9 Dangerous Goods: list 4 of them
Explosives – Gelatine Dynamite
Flammable Gases – LPG, Methane
Flammable Liquids – Petrol, Ethanol
Flammable Solids – Nitrocellulose, Sulphur
Oxidising Substances – Nitrates
Toxic and Infectious Substances – Cyanide, Medical Waste
Radioactive Substances – Plutonium
Corrosive Substances – Sulphuric Acid
Miscellaneous Dangerous Goods – Dry Ice
Explosives (detonators, emulsion explosives), flammable gases (LPG, Methane), flammable liquids (petrol, kerosene), flammable solids (sulfur, firefighters).
Define Wordback?
Wordback - A quick and concise description of the situation. Can be used to advise oncoming appliances as to the nature of the call.
Name (OIC)
Situation (type of fire)
Status
Address
Description (Brief)
Define Sitrep?
Sitrep - A more detailed description of what is happening on scene, painting the picture.
Define Message.
Message - Can be given at any time by anyone to relay information outside the wordback or Sitrep.
Elements of a wordback?
Elements of a wordback:
The name of the officer initiating the wordback
The situation type, as determined by the OIC:
Structure fire
Non-structure fire
Grass & Scrub fire
Incident
False alarm
The status of the fire/incident:
Investigation
Increased alarm level
Not yet under control (additional appliances required)
Under control (appliances on-scene and responding are sufficient)
Stop (appliances on-scene are sufficient)
Address of the fire/incident.
Optional brief description of the event.
Div A pump specs?
Darley 1000 mid-mounted centrifugal pump with additional 2nd stage high pressure attachment. Rated at 3800L/min at 1000kPa @3m lift
3 % Foam Rated Capacity: 3800lpm @ 1000kpa
6% Foam Rated Capacity: 2650 lpm @ 1000kpa
Friction loss laws?
D – DIAMETER of hose – A smaller diameter hose has far greater friction loss
R – ROUGHNESS of hose – Its difficult for water to move past a rough surface
I – INDEPENDENT of pressure – Whether pressure is 1 kPa or 1000 kPa, friction loss will be the same
S – SQUARE of flow rate – If flow rate is halved the loss of pressure is ¼
L – LENGTH of hose – the longer the hose the more pressure required to pump water through it.
- Friction loss increases directly with the length of the hose.
- Friction loss increases directly with the decrease in hose diameter.
- Friction loss increases directly as the square of the flow rate.
- Friction loss increases with the roughness of the interior of the hose.
- Friction loss, for all practical purposes, is independent of pressure.
Formula for head pressure?
Head Pressure = Height x 10kpa
Maximum Practical Lift?
7.5m
