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Vehicle Rescue A/O > Ropes & Rigging > Flashcards

Ropes & Rigging Flashcards

1
Q

What is the hazard curve paradox?

A

The hazard curve paradox is a comparison of the funding and other resources allocated to an operation with its hazard profile. For example, although technical rescue is extremely hazardous, it’s often underfunded because it’s so infrequent.

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2
Q

How much strength does nylon rope lose when wet?

A

Up to 15%. Although this is only temporary; it’s full strength will be restored when it dries.

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3
Q

What is the first and highest priority during a rescue?

A

Life safety

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4
Q

What is an indicator of skull fracture?

A

Blood or clear fuid coming from the ear

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5
Q

The four pressure points that control most blood flow are located on which two arteries?

A
  • Brachial
  • Femoral
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6
Q

When using rope, what device is best suited for moving an injured victim from one level to another?

A

A basket stretcher (i.e. stokes basket)

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7
Q

What’s the difference between a knot and a bend?

A
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8
Q

What is the extension for a carabiner off the center plate of a double pulley called?

A

A becket

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9
Q

What is a carabiner?

A

A metal “snap link” that’s used to connect various elements of a rope rescue system.

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10
Q

What is the 4:1 rule in rope rescue?

A

The 4:1 rule refers to the efficiency of rope during bending. If a rope is bent around an object at least four (4) times its diameter, there will be no loss of efficiency due to bending.

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11
Q

What is the correct sequence for a primary survey?

A

Remember your ABCs:
* Airway
* Breathing
* Circulation

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12
Q

What are the 2 categories of mechanical systems?

A
  • Simple
  • Compound
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13
Q

What is a “z rig”?

A

A “z rig” is a rope rescue system that has a 3:1 mechanical advantage and therefore resembles the letter “z”. To set it up:
1. Rig a 1:1 system in which the rope is affixed to the load and goes through a pulley (or in our case, a MPD)
2. Attach a traveling Prusik and Pulley (these are called “traveling” because they travel at the same speed as the load)

Remember that if it’s being used for life safety, then two should be set up: a main line and then a belay for back-up.

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14
Q

What are the only acceptable parts of a vehicle to use as anchor points?

A
  • Frame member
  • Axles
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15
Q

When should an anchor system be used?

A

When a single anchor point isn’t strong enough to hold the entire load.

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16
Q

What type of rope is very low stretch (no more than 20% of it’s length at break)?

A

Static

17
Q

How much of kernmantle rope’s strength comes from the sheath?

A

10 - 30%

18
Q

What type of rope is used for rescue operations?

A

Static rope (as opposed to dynamic which can stretch up to 60% of it’s length)

19
Q

What natural fiber is used for rope construction?

A

Manilla

20
Q

What is an alloy?

A

A combination or two or more elements such as metal.

21
Q

When should a multipoint anchor system be used?

A

When the direction of the load will be changing.

22
Q

What is an integrated harness system (IHS)?

A

It keeps the victim from moving outward and downward in the Stokes litter.

23
Q

How do you convert pounds of force (lbf) into kilonewtons?

A

Divide by 225. For example 6,000 lbf is approximately 27 kilonewtons.

24
Q

What is an anchor?

A

A place or object that is safe enough to be used for the attachment of ropes.

25
Q

Which knot is preferred for tying two rescue ropes end to end?

A

A double fisherman

26
Q

How many pounds have been established as a two person rescue load?

A

600 pounds

27
Q

What knot is recommended to tie two pieces of rope together?

A

A figure 8 bend

28
Q

What length of cordage should be used to tie small, medium, and large Prusiks?

A

5, 7 and 9 feet

29
Q

What is a Load Releasing Hitch?

A

A rope system that allows rope under a load to be lowered through the anchor attachment in an emergency.

30
Q

What words are used to describe movement in a rope system?

A

Tension and slack

31
Q

When using a tensionless anchor to sure a rappel line, how much larger should the anchor be compared to the diameter of the rope?

A

The anchor should be at least 4 times the diameter of the rope (this goes with the 4:1 rule).

32
Q

What controls descent in rappeling?

A

Friction

33
Q

What is block creel construction?

A

All life safety ropes are manufactured with block creel construction in which continuous filament fibers run the entire length of the top without any splices.

34
Q

How many anchors should be used for primary life support lines?

A

Two

35
Q

What’s required to ensure the safety of single rope rappel techniques?

A

A bottom belay

Vehicle Rescue A/O (8 decks)

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