IFSTA Apparatus Operator Flashcards Preview

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Flashcards in IFSTA Apparatus Operator Deck (49):
0

What is the minimum pump capacity for a pumper

750 gpm

1

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

1,000 gallons

2

What is the minimum pump capacity of an aerial apparatus

250 gpm at 150 psi

3

What is the difference in a converter and alternator

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

4

How do you check the water level in the tank

Visually

5

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

20%

6

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

20 feet

7

Traffic accidents are the second leading cause of traffic accidents?

Yes

8

When do most accidents occur

During ideal vision and road conditions

9

Curves and downhill, when do you downshift

Before entering the curve or downhill

10

Per IFSTA how many backers should be used

2

11

When is driving into oncoming traffic not recommended

When traffic cannot see you for any reason

12

What is total stopping distance

The sum of reaction distance and vehicle breaking distance

13

The most common cause of skids involve what

Driver error

14

How much does snow and ice increase the stopping distance

3-15 times

15

At what speed will apparatus outrun the siren

50 mph

16

Ow should apparatus be positioned if front suction is being used

45 degree angle

17

How is tandem pumping different than relay pumping

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

18

In dual pumping how are apparatus set up? Tandem?

Dual pumping, intake to intake.
Tandem, discharge to intake

19

How do you calculate head pressure

Height of the water above discharge divided by 2.304

20

What is the minimum flow setting for interior firefighting

95-100 gpm

21

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

250 and 625 gpm

22

In a two stage pump what is most effective for cooling

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

23

Valves over three inches need what

Slow acting valve control over 3 seconds

24

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

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

25

Per IFSTA when should the apparatus be choked

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

26

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

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

27

What is the first step in choosing a hydrant

Choose the most appropriate hydrant

28

How much does atmospheric pressure decrease as elevation increases

.5 psi for every 1,000 feet in elevation

29

Three things in consideration when selecting a draft site

Amount of water, type of water, accessibility of waters

30

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

2 feet all around the strainer

31

What should you do to the pump after drafting

Flush with cleans water

32

What is the most common type of contamination in water

Sand or dirt

33

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

60 percent of it's rated capacity

34

What is the most common cause of inability to draft

Air leak

35

Equation for evaluating the flow in a small stream

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

36

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

With 10 psi

37

What is relay pumping based on

Amount of water needed and distance

38

Where does a relay evolution always begin

With the source pumper

39

Where does the relay pumping begone it's shut down

Attack pumper

40

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

Relay pumping and water shuttle

41

Which is safer, relay pumping or water shuttle

Relay pumping

42

What is needed for a water shuttle operation

Pumper sand water tenders

43

What three things must a water tender be able to do

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

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

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

45

What does IFSTA recommend regarding fill site operations

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

46

How should flow through LDH hose be controlled

At the pumper, not by a hose clamps

47

What is the proffered arrangement of setting up multiple portable tanks

Diamond shape

48

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

No more than 3/8 of an inch