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Russo's Flashcards > 300s (304.08-305.09) > Flashcards

300s (304.08-305.09) Flashcards

1
Q

What are our ladders made out of?

A

Heat treated alloy aluminium

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2
Q

When should aluminium ladders not be used?

A

When they could come into contact with open circuits, high lines, transformers (especially when wet)

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3
Q

Why do we stand ladders fly out?

A

It tightens its hold on the base section

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4
Q

How many FFs allowed on ladders?

A

Take the first digit of the length (35 foot 3FFs)
Roof ladders on pitched roof is 2
FF should space themselves 10 feet apart

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5
Q

What are the ladder safety tips?

A

1: Helmet Gloves, Steel Toe
2: Use utility or ladder belt
3: Hose strap every 10 feet and top, use leg lock
4: Watch for power lines
5: Do not reach through unless knot tied
6: Examine once a month and after each use
7: Service test yearly
8: Heat indicator that has turned black is bad

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6
Q

How big is an attic ladder?

A

Height: 10 foot
Rung Centers: 14”
Open width: 12 3/4”
Locking device near heel

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7
Q

What size straight ladders does the department use?

A

1: 14 foot on Engines
2: 16 foot on ladders

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8
Q

What are the two types of rope construction?

A

1: Natural
2: Synthetic

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9
Q

What is the preferred rope of MFMD?

A

Nylon

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10
Q

What are the benefits of nylon rope?

A

1: Strongest
2: Best impact loading
3: Will not rot or mildew
4: Moderate abrasion resistance
5: Life lines
6: Utility lines

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11
Q

How much rope do we carry?

A

Utility 100 feet (three strand)

Lifeline 100 feet kernmantle nylon

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12
Q

How many times can lifelines be used?

A

Once

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13
Q

What are the characteristics of Kernmantle rope?

A

1: Jacketed synthetic with a braid covering (mantle) over a core (kern main load bearing 75%)
2: Sheath provides rest of strength and protects rope

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14
Q

What is the difference in static and dynamic rope?

A

1: Static little give 2/4% (MFMD rope)
2: Dynamic made to stretch (20%)

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15
Q

What are the weight limits of life lines?

A

1: Never more than 2 persons
2: Never exceed 600 pounds

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16
Q

Avoid shock loading the rope, whenever a rope has been shock loaded or has exceeded the weight on it what should be done?

A

Replaced

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17
Q

Knots weaken rope strength, how much does each knot reduce rope strength?

A 
Bowline: 50%
Figure 8 on a bite: 40%
Right angle bend: 50% (pad edges)
Through an eye splice: 20%
Eye splice with carabineer: 0%
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18
Q

How often should rope be inspected?

A

Before and after use

periodically

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19
Q

Rope should not be exposed to chemicals even fumes especially when wet, what can happen if it does?

A

Discoloration (brown) fibers can readily be broken

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20
Q

What are ways to handle the rope to prevent damage?

A

1: Removal properly from coil (dont put load on kinked snarled rope)
2: Sharp bends avoided
3: Dont drag
4: Keep in cool place good circulation
5: Dont store until dry
6: Prevent contact with metal especially rust
7: NEVER step on ropes (grind dirt into core damage and weaken)

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21
Q

How can we wash rope?

A

1: In machine mild soap and cold water
2: Daisy chain in washer
3: Lay rope out to dry (not in sun)
4: Never machine dry

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22
Q

When it is necessary to use a knot what should be considered?

A

1: Use the knot which will weaken the least
2: Least amount of abrupt bending
3: Make knot nice so runs smoothly without extra bends or twists (dress the knot makes it stronger)

23
Q

What are the 3 types of bends in a rope?

A

Bight Loop Round Turn

24
Q

What is the working end of a rope?

A

Part used to form a know

25
Q

What is the standing part of a rope?

A

Part between the working end and running part

26
Q

What is the running part of a rope?

A

Part used for work (hoist, pull, belay)

27
Q

What is drawing up a rope?

A

Slow even tightening of a knot

28
Q

What are the 5 basic fire service knots?

A

1: Clove hitch keeper (Attach rounds with no slip: railings)
2: Bowline (Form non slip loop at tail: tie around object)
3: Becket bend (Attach two ropes of unequal size)
4: Figure 8 (Primary rescue knot)
5: Rescue knot (Body harness)

29
Q

What can the air bag system be used for?

A

Lift heavy ridged objects (up to 146,000 pounds)

30
Q

How much clearance do air bags need?

A

Less than 1 inch

31
Q

What is the total height lift of 2 airbags (larger on bottom)?

A

40 inches

100cm

32
Q

How much PSI is required from air source for air bags?

A

118psi

33
Q

What are the 6 components of air bags?

A

1: Air source
2: Regulator
3: Control valve
4: In line relief valve
5: Hose
6: Bag

34
Q

What are the pressures of air bags?

A

Full inflation: 118psi
Tested at 236psi (twice working pressure)
Burst rated 472psi (twice tested pressure)

35
Q

What are air bag hoses rated at?

A

300psi

36
Q

Here do you attach the safety in line relief valve on air bags?

A

Directly to the bag

37
Q

What should be done after raising something with the air bag?

A

Crib

38
Q

How often should air bags be replaced?

A

Every 10 years (first 2 digits of the serial number represent the date made)

39
Q

What is the FL formula?

A

FL=2Q^2xFF

Q = GPM/100

40
Q

What is the Pump discharge pressure formula?

A

NP=FL=AP(+-)EL

41
Q

What are the Friction factors?

A

2 1/2: 1
Two 2 1/2: 0.25
5: .03

42
Q

What pressures and what GPM do you pump the new 2 1/2 inch nozzles?

A

40psi: 265gpm
50psi: 296gpm
60psi: 325gpm

43
Q

With the rules of 8s how do you project gpm?

A

add 2 to numerator once converted to 1/8s

1 5/8” tip = 700gpm

44
Q

When does appliance factor in for friction loss, and how much do you factor?

A

Greater than 350gpm

10psi

45
Q

How many PSI do you calculate for a master stream?

A

25psi

46
Q

How many psi do you count for each floor up or down, or 10 feet?

A

+- 5

47
Q

based off of residual loss how many additional lines can be pumped?

A

0-10% 3 more like lines
11-15% 2
16-25% 1
>25% a little more water

48
Q

What do we pump sprinklers at?

A

150

49
Q

How far away should we park if pumping an FDC?

A

200 feet

50
Q

When pumping a standpipe how much psi do we factor for the building plumbing?

A

25psi

51
Q

What if the brass is missing from an FDC?

A

Get the 2 1/2” FDC thread adapter

52
Q

What is the maximum amount of practical lift for drafting on fireground operations?

A

24 feet (pumps designed for the optimum capacity at 10 feet)

53
Q

What is the criteria for selecting a good drafting location?

A

1: Amount of water available
2: Depth of water
3: Accessibility
4: Quality of water

54
Q

How do we draft?

A

1: Use hard suction
2: Try to place hose with 18” clearance above and below
3: Prime pump until full of water (15-20 seconds)
4: Increase throttle until 50 psi
5: Open appropriate discharge slowly
6: Set pressure control to desired psi
7: Discharge water back to water source if not flowing water to keep pump cool
8: Watch your vacuum

Russo's Flashcards (44 decks)

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