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RFT Flashcards

1
Q

3 types of auto sprinklers?

A

Wet system
Dry system

Alternate system (wet or dry)

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2
Q

Factors (3) that influence the ICs decision in firefighting?

A

Locating the fire

Smoke travel

Weight of attack

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3
Q

When inside a fire compartment, how should firefighters keep check on their surroundings and fire gasses?

A

Branch operater looks above and in front

Other team members check above and behind, (for exit)

The TIC should be used to asses conditions as progress is made

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4
Q

What is a compartment?

A

Enclosed space within a building or structure, which is capable of allowing a fore to develop and contain the products of combustion

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5
Q

Where should a firefighting lift be stopped when used?

A

Minimum of 2 floors below fire

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6
Q

Two types of gas extinguishing systems?

A

Total flooding system

Local application system

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7
Q

3 water application techniques of water?

A

Indirect

Direct

Gas cooling

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8
Q

2 different techniques of pulse spraying?

A

Short pulse

Long pulse

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9
Q

Advantages of using rising mains?

Dry/wet risers

A

Reduces amount of hose needed

Reduced friction loss

Reduces equipment needed

Leaves staircases free of hoses

Reduces effort required by crews to supply water to jets

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10
Q

Buildings over 18m must have dry riser installed.

A

.

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11
Q

2 things a crew member must do upon being sent to the main stop valve of a sprinkler system?

A

Ensure the valve is NOT CLOSED, except on orders of IC

OPEN the valve, on the orders of the IC

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12
Q

Indications that it may be necessary to withdraw from fore compartment? (5)

A

Rising temperatures (TIC)

Unable to extinguish flames in gas layer

Descending neutral plain

Increased fire development

Reduced visibility

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13
Q

Buildings over what height have WET risers installed?

A

60m

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14
Q

What pressure should a dry riser initially be charged to?

A

10 bar

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15
Q

How many pumping appliances are sent to an incident as standard?

A

At least 2

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16
Q

What is a fire survival guidance call? (FSG)

A

A call made by an occupant of a building on fire that beloved that they can not escape. They stay in the phone with control officer who gives advice

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17
Q

4 stages of fire progression?

A

Developing fire stage

Flashover stage

Fully developed stage

Decay stage

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18
Q

5 main types of auto fire alarm detector heads?

A

Ionisation

Optical

Radiation

Heat

Sampling detector

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19
Q

Turning over and damping down?

A

Ensuring a fire is completely extinguished, and all small pockets of fire have been put out

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20
Q

3 types of fire phenomena that pose hazard to firefighter?

A

Flashover

Backdraft

Fire gas ignition

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21
Q

Two pressure gauges fitted to sprinkler system?

A

Supply gauge

Installation gauge

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22
Q

How can firefighters identify location of a fore from outside of building?

A

Gather all info from witnesses

Consult auto fore alarm panel and see location of detector heads that have actuated

Look around the building for signs of fire

Feel for hot doors or walls

Smell, or odours

Listen for crackling

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23
Q

3 main application techniques of water?

A

Direct

Indirect

Gas cooling

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24
Q

Prior to entry into a compartment, what must crews do?

A

Let other crews in vicinity know

Stay low

Set branch to narrow spray

Position branch in readiness of door opening

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25
2 types of sprinkler head?
Quartzoid bulb Fusible link
26
Considerations an IC must take into account to ensure the safety of firefighters? (6)
Life risk Access Construction Fixed installations Fire growth Contents
27
Two types of flames?
Diffused Premixed
28
3 functions of all sprinklers?
To detect fire At attack fire To give audible warning
29
Signs that a flashover may occur?
A ventilated fire with adequate oxygen supply Flames visible in gasses on ceiling level Combustible materials gassing in room due to pyrolysis High temp and increasing rate of combustion Neutral plane moveing down Sudden increase in fire delvelopment Pyrolysis at floor level of room Increased turbulance at neutral plane
30
Maximum pressure that fixed hose reels are?
8 bar
31
Actions that just be taken when arriving to an incident involving gas extinguishing fixed installations?
Doors should not be opened until IC Is satisfied fire is out Equipment should be laid out and ready to use should fire re occur Any rooms only enterd by crews wearing BA Before entering, if system has not been actuated, the system should be switched to manual
32
What is a nominal roll board?
Carries on each appliance and identify the appliance and the riders
33
Two tactical modes?
Offensive. Oscar Defensive. Delta
34
What is “the weight of attack”?
The number of jets, flow settings, size of hose
35
Forward information board? (FIB)
Carried on all pump ladders, Records location of bridgehead, sector command point, forward command point
36
Ideal mixture?
Between upper and lower explosive limits. Fuel burns most efficiently when there is an ideal mixture
37
4 stages of fire development?
Fire progression Flashover stage. (Transition) Fully developed Decay
38
What is the coanda effect?
Fire traveling externally on high rise
39
3 basic fire fighting facilities in high rises?
Firefighting shafts Dry or wet risers A fire lift
40
Modern high rise structures firefighting features? (10)
Firefighting lobby FF shaft Stair pressure system Communications systems Floor display plan Fire control centre Atrium Crossover floors Sprinkler systems Combined heating, ventilation and air conditioning(HVAC)
41
Where should a bridgehead in a high rise fire be?
At least 2 floors below fire
42
What items should be taken to the bridge head in a high rise incident? (10)
45mm hose 2 branches ECB 2 BA sets IEC pack Long line Breaking in gear TIC Access keys/codes Floor plans if available
43
4 sectors of a high rise incident?
Search sector - above fire sector Fire sector - floors involved in fire Bridgehead - 2 floors below fire Lobby sector - between ground floor and bridgehead
44
Operation range of TIC?
40-1000 Celsius Mesures heat of object not air temp
45
TIC battery operating time?
3.5 hours
46
TIC inspection frequency?
On acceptance After use Monthly (swap batteries) Anually Should also be switched on and check for use and charge, Before use At change of watch
47
Define ventilation?
The removal of heated air, smoke or other airborne contaminates from a structure, and their replacement with a supply of fresher air
48
3 ways a fire can be ventilated?
Self ventilation Automatic ventilation Tactical ventilation
49
Benifits of tactical ventilation? (6)
Assist escape of occupants and firefighters by restricting spread of smoke Improve conditions Speed up rescue and fire attack by reducing heat and smoke Reduce fire spread and property damage Improve visibility
50
3 stages of fire when tactical ventilation can be used?
After arrival of LFB but before control is achieved After control but before extinction After fire extinction
51
2 types of tactical ventilation?
Offensive Defensive
52
Inlet vents should be twice the size as outlet vents when using tactical ventilation
Outlet vents should be made first
53
What is a special service incident?
Incident attended by LFB that does not involve a fire or suspicion of fire
54
4 types of special services that account for 75% of them?
Flooding Persons locked in Making structures safe Efficient entry
55
Powers of firefighter in emergency? (5)
Enter premises without owners permission Move vechicles without owners permission Close highways in interest of safety following emergency Stop and regulate traffic in emergency Restrict persons entering premises
56
Special services subject to charges? Examples
Use of authority equipment to supply or remove water Clearing flooded premises Making structures safe, where there is no risk to personal injury to the public Any service classified as miscellaneous Incident involving chemicals/ hazardous materials occurring other than in domestic locations
57
Four stations where large animal rescue equipment is based?
Wembley Erith Dagenham Wandsworth
58
Where are OSUs (operational support units) based around London?
``` Sutton Finchley Stratford Ealing Wandsworth Lee green ```
59
ORD?
Operational risk database
60
MDT
Mobile data terminal

Fire Brigade training (13 decks)

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