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Flashcardlet > TB Foam > Flashcards

TB Foam Flashcards

1
Q

Low expansion foams are useful on _

A

Fires & spills involving flammable & combustible liquids

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2
Q

High expansion foams are useful on _

A

Class “A” combustible materials on areas inaccessible to FF’s (cellars & ship holds)

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3
Q

Are Hi-Ex foams suitable for use on outdoor flammable liquid fires?

A

Not suitable

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4
Q

Can different types of foam concentrate be mixed for storage

A

Foam concentrates are NOT compatible & Never mixed for storage

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5
Q

Can finished foam be mixed at incidents?

A

Low expansion finished foam- Yes

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6
Q

Finished FF Foam is lighter than fuels that they are placed on & float on surface of fuel. This results in 4 methods of extinguishment

A

Smothers, Suppresses, Separates, Cools

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7
Q

_ foam provides slow draining, stable blanket that resists breakdown caused as a result of water application & radiant heat. This makes it superior in preventing re-ignition & burn back

A

Fluroprotein- also adheres to metal surfaces

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8
Q

_ foam is suitable for polar solvent fuels (alcohols, ketones)

Can fluroprotein foam be generated with salt water

A

Alcohol resistant foam (fluropolydol)

Yes

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9
Q

Fluropolydol foam is used at different % rates. What are they?

A

3% rate for hydrocarbons & 6% rate for polar solvents. Fluropolydol is also the preferred foam to use if entry into a pool of fuel must be made- continuously applied to back of FF’s knees

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10
Q

_ is NOT suitable for polar solvents & should be restricted to hydrocarbon fuels which do not contain any polar additives. Excellent for jet fuel, fuel oil, & kerosene

A

AFFF- has trouble sealing against hot metal tank surfaces

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11
Q

Foam concentrate ID colors for Fluroprotein, Alcohol, Hi-Ex & AFFF

A

Fluroprotein Brown,
Alcohol Green,
Hi-Ex Yellow,
AFFF Black

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12
Q

The premixing of fluroprotein foam solution can be accomplished by dumping _ five gal cans of concentrate into a 500 gal booster to produce _ % solution. The pumper (shall/shall not) be connected to a hydrant

A

Three,
3 %,
Should NOT- back-pressure in foam line could force foam solution into domestic water supply

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13
Q

HL noz used with eductors are useful for small operations such as a spill approximately _’

A

approx 600 sq feet

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14
Q

Foam carriers are used for medium sized spills such as a spill over _’, a tanker truck mishap, or loading rack spill

A

Medium ops over 600’ sq ft- 2000 sq ft

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15
Q

Master stream operations are used at largest type ops such as oil tank farms or large spills over _’

A

Over 2000 sq feet

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16
Q

1st alarm units will supply how much foam concentrate

A

Ladders are req’d to carry at least two 5 gal cans of Fluroprotein concentrate & Eng are req’d to carry at least three 5 gal cans. 3E & 2L will provide at least 65 gal of foam concentrate & up to 3 foam HL

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17
Q

Foam eductor flow between - GPM

A

95 & 120 GPM

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18
Q

When is a 10-86 transmitted?

A

If the incident requires foam that is beyond the 1st alarm assignment capability

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19
Q

Can you start a foam attack while awaiting for additional concentrate to arrive?

A

Must have enough foam concentrate on hand before any operations started. If fire is NOT extinguished it will burn back & used concentrate will be wasted

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20
Q

New tankers are constructed w/_ shell & can carry over 14,000 gal; Older tankers have a _ tank & carry 3000-4000 gallons

A

Aluminum;

Steel

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21
Q

Can we attempt to upright a loaded vehicle

A

A vehicle that has rolled onto its side must be off-loaded. Never attempt to upright a loaded vehicle

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22
Q

Which tanks BLEVE: older ones or newer ones?

A

Both can BLEVE but newer models it is reduced due to aluminum melting at 1220 F. Both require LCS on vapor area quickly

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23
Q

There are 2 basic fuels used in aircraft- Aviation gasoline & Jet A. _ is similar to automobile unleaded gas but with a higher octane & is very volatile

A

Aviation gasoline

24
Q

Airplane incidents on airport property- one of FD priorities will be _

A

Supply water to operation. PAPD will have their vehicles operating pending our arrival

25
Q

What is more dangerous- a tank full or a tank partially full

A

A tank full of vapors is much more dangerous than a tank full of product

26
Q

Foam concentrate should be stacked no more than _

Shelf life of concentrates _

A

2 cans high.
Fluroprotein & Alcohol= 10 year shelf life.
AFFF & Hi-EX (synthetic)= 20 years

27
Q

What is done with expired concentrate?

When cleaning eductors, water should be flushed through for at least _

A

Used for drill purposes

15 minutes

28
Q

All eductors of Engine companies shall be tested _

A

Weekly at MUD supplying 200 psi to eductor

29
Q

Can Hi-Ex be used on flammable liquids

A

Not recommended. Can become permeated w/vapors which can ignite. Use on class A fires in confined areas

30
Q

Although a relatively small flow of water is req’d in Hi-Ex foam operations (_GPM), high pump pressure is necessary to overcome pressure loss at eductor. Maintain - psi

A

60 GPM; 200-220 PSI at inlet of foam eductor in order to deliver sufficient water under proper pressure to foam generator.

31
Q

What must be done before FF’s work in a foam environment?

A

De-energize all electrical equipment. Members must have full PPE & search rope before entering. Avoid becoming completely immersed in foam

32
Q

_ is a liquid with a flash point of 100F or higher;

_ is a liquid w/flash point below 100F

A

Combustible liquid;

Flammable liquid

33
Q

TL being used for foam ops- supply base of TL with at least _

A

250 psi to obtain proper noz pressure. Usually cannot be accomplished without relay pumper (Volume position)

34
Q

Supplying TL for foam ops: Both the FIMM pumper & relay pumper need to operate in Volume. Relay pumper needs a supply pressure of _ to be able to supply TL w/250 psi

A

80 psi

35
Q

Foam Tender has how many tanks “TTTT”

A

Tender- Three- Thousand- Tanks

36
Q

The Spamco 95/120 GPM Foam eductor will have what number stenciled on side?

A

4 or 400. The Hi-Ex eductor will have a 2 or 200 stenciled on side w/1” yellow band

37
Q

AFFF Can: you have inverted & squeezed lever to release residual air pressure & rinsed thoroughly. Now add _ water

A

2 Gal of water, slowly add 3% AFFF concentrate, & slowly add more water to reach 2 1/2 gal mark. Replace cap & charge to 100 PSI. Label date of recharge

38
Q

Can an AFFF can that was not fully expended be used again?

A

The remaining solution can be held in reserve in case of re-ignition, but once at qtrs it must be re-charged

39
Q

AFFF not used within _ after charging must be emptied, refilled, & recharged.

A

Within 1 year

40
Q

Which HL is stretched between the eductor & foam noz, and how many lengths max

A

Only 1 3/4” HL with 4 lengths max.

41
Q

The eductor must be placed at least _

A

at least one length supplied with 2 1/2” HL. No limit on number of lengths for supply

42
Q

Stretching a foam HL- foam noz opened fully & directed away from fire. ECC will start water & provide _ psi at eductor.
Both the nozzle & eductor should have a _ band

A

200 psi. Keep the nozzle operated at or below the level of the eductor;
1” white

43
Q

If a FIMM pumper is connected to a hydrant or to a supply from domestic water system, what must be utilized?

A

4 1/2” back flow prevention valve

44
Q

A Foam Carrier/Tender will supply Satellite pumpers w/foam concentrate via _” HL. To prevent back up pressure of this line should be _ psi over hydrant pressure.

A

1 3/4” hose;

Prevent back up into foam carrier, the pressure of this line should be 50 psi over hydrant pressure

45
Q

Who supplies Foam Carriers with water

A

Any Engine with an operating hydrant & assigned strictly to supply. Have a 3 1/2” supply line stretched awaiting their arrival

46
Q

Hi Ex Foam incorrect
A. Fresh or salt water can be used to develop Hi Ex foam
B. Eductor metering calibrations are relative & do NOT necessarily indicate the actual percentage of solution that will be formed
C. Relatively small flow of water (60 GPM) is req’d in Hi Ex foam ops
D. To deliver sufficient water under proper pressure to the foam generator, maintain between 150 & 175 psi at the inlet of the foam eductor

A

D 200-220

47
Q

Foam Carrier/Tender Unit supplying a Satellite pumper w/foam concentrate through 1 3/4” hose the pressure in this line should be how many psi over hydrant pressure in order to prevent BU into Foam Carrier or Foam Tender
A. 40 psi B. 45 psi C. 50 psi D. 15 psi

A

C 50 psi

48
Q

Flammable liquid spill outside of a motor vehicle repair shop. The spill is on fire but is contained & not flowing. Which application method will give you the widest pattern at the lowest velocity?
A. Try to deflect the stream against something and allow the foam to slide down and work its way across the burning liquid.
B. Direct the foam stream skyward in a slow back and forth motion, allowing the foam to fall as gently as possible over the surface.
C. Direct the foam stream on the ground ahead of the fire in such a manner as to bounce the foam onto the fire.
D. Direct the stream directly into the burning liquid in a brief, sweeping side-to-side motion.

A

C

49
Q

Foam handline into operation. Which is the only action taken by your company that is correct?
A. The eductor was placed two lengths from the pumper
B. The eductor was supplied with 3 1/2 hose.
C. 6 lengths of 1 3/4 hose was stretched between the eductor and the foam nozzle
D. The eductor was supplied with 220 PSI

A

A. The educator must be placed at least one length from the pumper

B. 2 1⁄2” hose
C. maximum of four lengths
D. 200 psi at the educator

50
Q

Hi Ex foam correct?
A: The Hi-Ex generator should be 1 foot larger in diameter than the mouth of the chute.
B: If necessary, the chute can be placed to deliver Hi-Ex foam to a level higher than the generator only if the area around the discharge outlet is sealed off.
C: The Hi-Ex generator can be used as a smoke ejector. Turning the generator around will accomplish this.
D: After members enter into a Hi-Ex foam environment, electrical equipment must be de-energized as soon as possible.

A

C. TB Foam 12.14 G

A. The chute used should be one foot larger in diameter than the mouth of the generator TB Foam 12.13 B
B. The chute cannot be placed as to necessitate the delivery of foam to a level higher than that of the generator. TB Foam 12.13 D
D. de-energized before the team enters the area. 12.15 C

51
Q 
Specific gravity of water
A. 0 
B. 1
C. less than 1 
D. more than 1
A

B TB Foam 7.4.1

52
Q 
The best place to est a Foam Assembly Point for the Foam Carrier or Foam Tender is 
A. Staging Area
B. adjacent to ICP
C. Intersection
D. Operations Post
A

C TB Foam 7.4.4

53
Q

Regarding airplane incidents on airport property, what is the major priority of FD in relation to PAPDs “larger” Oshkosh crash truck vehicles
A. Supply these type trucks w/water
B. Supply these type trucks w/Fluoroprotein foam
C. Supply these type trucks with Alcohol Resistive Fluroprotein foam
D. Supply these type trucks w/AFFF

A

A TB foam 7.5.1

54
Q 
Immediately after conclusion of a foam operation prepare an inventory of concentrate remaining in storage. This inventory shall specify the type & amount of concentrate used, the amount of concentrate remaining in storage & type & amount of concentrate requested for replenishment. As soon as it's completed, this report shall be faxed _
A. Next higher level of command
B. Tech Services
C. IC
D. 1st Responding Foam Coordinator
A

D (10.3) 1st responding Foam Coordinator

55
Q 
Newer aluminum tanks carried by tank trucks, the problem of BLEVE has been reduced because the shell will melt at approximately?
A: 2000 degrees F
B: 1400 degrees F
C: 1550 degrees F
D: 1220 degrees F
A

D TB Foam 7.4.3 A

56
Q

AFFF foam can incorrect
A. AFFF is superior foam that need less time & less solution for extinguishment than fluoroprotein foam. AFFF floats on flammable liquids
B. AFFF can be used on class B fire such as pit fires, car fires, & flowing flammable liquid fires; grease fires
C. It’s necessary to play AFFF against a backboard or side of the tank to form a film on the oil surface. It can also be applied gently to the surface of oil by placing a finger over the nozzle
D. The stream should not be driven directly through the surface due to the possibility of causing a steam explosion or splashing hot liquid back on the operator

A

C It is NOT necessary to play AFFF against a backboard or side of the tank to form a film on the oil surface.

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