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Engineers Test > IFSTA Apparatus Operator > Flashcards

IFSTA Apparatus Operator Flashcards

0
Q

How many gallons does it take to be a mobile water supply

A

1,000 gallons

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1
Q

What is the minimum pump capacity for a pumper

A

750 gpm

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2
Q

What is the minimum pump capacity of an aerial apparatus

A

250 gpm at 150 psi

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3
Q

What is the difference in a converter and alternator

A

Alternator converts AC into DC for use by the engine, inventor converts DC to AC for use by personnel

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4
Q

How do you check the water level in the tank

A

Visually

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5
Q

What grade should the parking break be able to hold the apparatus

A

20%

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6
Q

When driving 5 miles per hour, what’s the max stopping distance allowed

A

20 feet

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7
Q

Traffic accidents are the second leading cause of traffic accidents?

A

Yes

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8
Q

When do most accidents occur

A

During ideal vision and road conditions

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9
Q

Curves and downhill, when do you downshift

A

Before entering the curve or downhill

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10
Q

Per IFSTA how many backers should be used

A

2

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11
Q

When is driving into oncoming traffic not recommended

A

When traffic cannot see you for any reason

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12
Q

What is total stopping distance

A

The sum of reaction distance and vehicle breaking distance

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13
Q

The most common cause of skids involve what

A

Driver error

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14
Q

How much does snow and ice increase the stopping distance

A

3-15 times

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15
Q

At what speed will apparatus outrun the siren

A

50 mph

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16
Q

Ow should apparatus be positioned if front suction is being used

A

45 degree angle

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17
Q

How is tandem pumping different than relay pumping

A

Engines are parked closely together instead of evenly spaced, other than that it is the same

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18
Q

In dual pumping how are apparatus set up? Tandem?

A

Dual pumping, intake to intake.

Tandem, discharge to intake

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19
Q

How do you calculate head pressure

A

Height of the water above discharge divided by 2.304

20
Q

What is the minimum flow setting for interior firefighting

A

95-100 gpm

21
Q

What is the discharge rate for a 21/2 and 4 inch outlet

A

250 and 625 gpm

22
Q

In a two stage pump what is most effective for cooling

A

A circulator valve, the tank fill may only come off the first stage of the pump, causing heat buildup in the second stage

23
Q

Valves over three inches need what

A

Slow acting valve control over 3 seconds

24
Q

The pressure relief valve does not allow how much of a pressure spike

A

Will not exceed 30 psi above the set pressure of the relief valve

25
Q

Per IFSTA when should the apparatus be choked

A

Every time the apparatus is stopped with the engine running and the operator out of the cab

26
Q

When should a two stage pump be switched from pressure to volume

A

When it appears that over 50% of the rated capacity of the pump is going to be used

27
Q

What is the first step in choosing a hydrant

A

Choose the most appropriate hydrant

28
Q

How much does atmospheric pressure decrease as elevation increases

A

.5 psi for every 1,000 feet in elevation

29
Q

Three things in consideration when selecting a draft site

A

Amount of water, type of water, accessibility of waters

30
Q

Per IFSTA how much water should be over the strainer when drafting in order to reach max capacity

A

2 feet all around the strainer

31
Q

What should you do to the pump after drafting

A

Flush with cleans water

32
Q

What is the most common type of contamination in water

A

Sand or dirt

33
Q

At twenty feet above the water source when drafting, what is the capacity of the pump

A

60 percent of it’s rated capacity

34
Q

What is the most common cause of inability to draft

A

Air leak

35
Q

Equation for evaluating the flow in a small stream

A

Flow = A x V x 7.5
A equals width times the depth
V equals velocity if feet per second

36
Q

How close to the desired pressure should your relief valve be set

A

With 10 psi

37
Q

What is relay pumping based on

A

Amount of water needed and distance

38
Q

Where does a relay evolution always begin

A

With the source pumper

39
Q

Where does the relay pumping begone it’s shut down

A

Attack pumper

40
Q

What are the two primary means of getting water to remote areas

A

Relay pumping and water shuttle

41
Q

Which is safer, relay pumping or water shuttle

A

Relay pumping

42
Q

What is needed for a water shuttle operation

A

Pumper sand water tenders

43
Q

What three things must a water tender be able to do

A

Discharge water at 1,000 gpm average, one direct fill port, a tank to pump valve that can give 500 gpm to the pump

44
Q

What are the three things to consider before starting a water shuttle

A

Location of dump site, location of fill site, and route of travel

45
Q

What does IFSTA recommend regarding fill site operations

A

A pumper be used to fill tenders at all sites even if a hydrant or static water source is used

46
Q

How should flow through LDH hose be controlled

A

At the pumper, not by a hose clamps

47
Q

What is the proffered arrangement of setting up multiple portable tanks

A

Diamond shape

48
Q

What is the acceptable amount a coupling is allowed to slip during hose testing per IFSTA

A

No more than 3/8 of an inch

Engineers Test (15 decks)

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