Ropes & Rigging Flashcards
What is the hazard curve paradox?
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.
How much strength does nylon rope lose when wet?
Up to 15%. Although this is only temporary; it’s full strength will be restored when it dries.
What is the first and highest priority during a rescue?
What is an indicator of skull fracture?
Blood or clear fuid coming from the ear
The four pressure points that control most blood flow are located on which two arteries?
When using rope, what device is best suited for moving an injured victim from one level to another?
A basket stretcher (i.e. stokes basket)
What’s the difference between a knot and a bend?
What is the extension for a carabiner off the center plate of a double pulley called?
What is a carabiner?
A metal “snap link” that’s used to connect various elements of a rope rescue system.
What is the 4:1 rule in rope rescue?
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.
What is the correct sequence for a primary survey?
Remember your ABCs:
What are the 2 categories of mechanical systems?
What is a “z rig”?
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.
What are the only acceptable parts of a vehicle to use as anchor points?
- Frame member
When should an anchor system be used?
When a single anchor point isn’t strong enough to hold the entire load.