Questions Flashcards
First two steps of operational week assessment
Asses the task and persons involved and equipment available
Choose safe system of work
Describe flash point
Flash points is when sufficient vapours are being introduced as to when a ignition source is introduced a monumental flash will occur, burning of vapours will not continue when ignition source is taken away
Reason wall may become unstable
collapse of a floor can leave high walls unsupported
joists and beams can have levering effect on the walls
floor collapses can create a shock load
fire damage
Which of the following statements about roof construction is false a, b, c or
d
a)
There are fewer timbers in the modern r
oof
b)
The timbers used to make gang nailed roof trusses are thicker than those used in older roofs
c)
Tests on soft woods have shown that it takes about 7 minutes to char to a depth of 4mm. This will
severely weaken a roof with truss plates
.
d)
Roofs made from tru
sses are designed so that the weight of the roof is spread across the whole
structure. Failure of any of the roof members places an additional load on adjacent
What is heat a form off?
Energy
Length and max pressure of 45 and 70 hose
23M and 15 bar pressure
Label a hydrant
H indicates the location
Size of the water main at top
Distance from the sign bottom number
When adjusting branch and flow settings why put hand on top off branch
So your glove doesn’t get wet
And have better control
Length and 90 and colour
30m and yellow
The goldivia World Series pump is capable of prouding …. lpm. The output is limited to …. lpm when work via appliance tank
4000 and 2700
Why type of energy does impeller transfer to water on a single stage centrifugal pump
Kinetic
Why should pump operator monitor their gauge,flow meteres, and water contents
The supply is not being overrun
The correct pressure is delivered to the branches
The pump is performing correctly
A sudden increase in a low pressure gauge reading could indicate
Branches being shut down
Kinks in delivery Jose
Veichle or debris on delivery hose
3 factors that influence the amount of pressure loss
Output flow of water
How much water can be delivered into tank when bypass valve is operated
1000lpm
Appliance inventories serve 3 purposes?
If everything is there
Re stock equipment and replace
Stored in correct place
Well,slack cable,extend
Order when see slack cable on 135
The fire resistance of timber depends on the type of wood and two other factors. List the two other
factors. (2 marks)
Thickness of the timer. Any coatings or treatments.
When pump operating from an open water supply, state four reasons why the com
pound gauge should
indicate an increased vacuum reading
Level of supply dropped (tidal or source used up), 2. suction strainer blocked, 3. branches opened, 4. burst delivery hose
Describe auto - ignition temperature (AIT)
This is th
e lowest temperature at which a fuel will ignite and continue to burn without the need for an
ignition source to be introduced. It is often referred to as the spontaneous ignition temperature (S.I.T)
List the three methods of extinguishing a fire by b
reaking the triangle of fire (
Cooling, Starving, Smothering.
List four features of all new hydrants
clockwise opening, leak detection device
What is the effective working pressure gauge of the Rosenbauer
ProJet
II?
3.5-7 bar
List the three reasons when a ground monitor may be used in preference to hand held branches
A larger volume of water or foam is required than can be provided by hand controlled branches.
Operations require extingu
ishing media to be thrown a greater distance.
Operations require extinguishing media over long time periods in the same area of operation, for
example, foam attack, cooling of surfaces, large fires
How many lengt
hs of hosereel hose is carried on an
appliance and how long is each length
8 x 18.3m
When pumping, a sudden decrease in a low pressure gauge reading could indicate a branch
being opened
or a burst delivery hose. What other occurrence could this indicate?
Empty appliance tank
What is the single most important factor which affects frictional loss and causes a gradual loss of
pressure
Length of hose
What is the definition of a primer?
A device that pumps air
What is the maximum output, in LPM of the Rosenbauer light portable pump when operating at 4 bar
? (1
mark)
1000 LPM
The internal diam
eter of a hose is a factor that influences the amount of pressure loss. List the other three
factors that influences the amount of pressure loss
Output of water flow. Length
of hose. Height of water source.
Appliance inventories serve three purposes, what are they?
All equipment is present. Con
dition and readiness of all equipment. Check equipment is correctly stowed
Define the term risk
Risk is the likelihood of a hazard causing harm and the severity of it.
The effect of a fire on the walls of a building can cause the building to collapse. One reason is
cracked
or
dropped arches over windows, doors and other openings. Give three other reasons
why a wall may
become unstable
Cracks in lower parts of the walls. Walls bow outwards and collapse. Collapse of floors.
What is a 90mm hose adaptor kit used for?
For connecting Storz coupling to appliance pump and standpipe o
utlet.
What is the maximum
flow rate of the Akron Mercury ground monitor and what is its optimum operating
pressure
1900lpm & 7 bar
State four measures firefighters can take to control the jet reaction?
Adopt a position on even and stable ground (not icy, slippery or covered in rubble). Start with a pressure and flow - rate that can be coped with and increase the flow - rate/ pressure as and when required. Have at least two firefighters on the branch when working with high flo w - rates and high pressures and open and close the branch slowly. Make sure the hose runs out in a straight line behind the branch operator
rate on the Rosenbauer ProJet II branch?
930lpm
The specified working pr
essure for a Rosenbauer R101 branch is 6 bars for all flow settings. However, the
branch will still operate effectively down to
3 bars
if the optimum pressure cannot be achieved
3 BARS
State the three benefits of switching the “HOSE REEL
PRESSURE” switch to low pressure when the hose
reels are not required?
Reduces noise, uses less fuel, better for the environment
When a pump operating from an open water supply, state three reasons why the compound gauge should
indicate decre
ased reading
Level of supply raised (tidal), 2. branches shut down, 3.air leak on suction side of pump.
The output flow of water is a factor that influences the amount of pressure loss. List the
other three
factors that influence the amount o
f pressure loss
Internal diameter of hose, length of hose, height of water source
When setting up the pump ready to lift from open water, what position should the tank to pump switch
be in?
closed
A
Rosenbauer LPP can be run against closed deliveries
True or False
FALSE
When securing delivery hose aloft, how below the sill should the rolling hitch be positioned
0.5 M
When pitching a 9m ladder into a narrow opening, the head of the ladder must be at least 3 - 5 rounds above or below the sill.
3-5 rounds
Define combustion
The irreversal chemical reaction that produces heat and light
describe solid construction
load bearing walla which support floor and roof
most common materials are brick stone or concrete
cast iron columns support either cast iron or timber beams
beams are bedded into load bearing walls
One of the four safety considerations when working with a ladder
is not to overload the ladder. Unless
assisting a casualty down the ladder, a maximum of one person per extension is allowed. List the other
three safety considerations
three points of contact
do not overreach
do not work on the top three rounds
3 checks when closing appliance shutter
equipment stowed correctly
all equipment is there
equipment in correct place
3 acceptable of carrying line up a ladder when line bag is not available
Line without bag
: (made up) in 8 with arms through loop across back.
-
Line without bag
: (not made up) over head and shoulder diagonally.
-
Loose line
: with overhand knot in end and placed over shoulder.
