RRC Rope Systems & Throw Bag Techniques 2

Question 1

In a Z-drag mechanical advantage system used in river rescue, what is the approximate pulling advantage it provides?

Accepted Answer

3:1

Answer

1:1

Answer

2:1

Answer

5:1

Question 2

What is the most common knot used to form a fixed loop at the end of a rescue rope when attaching to a victim or anchor?

Accepted Answer

Figure-eight on a bight

Answer

Bowline

Answer

Clove hitch

Answer

Sheet bend

Question 3

What is a Munter hitch (Italian hitch) primarily used for in rope-based river rescue systems?

Accepted Answer

Creating a belay or rappel without a descender device

Answer

Joining two ropes of different diameters

Answer

Forming a self-tightening anchor loop

Answer

Attaching a carabiner to a victim's PFD

Question 4

What is the minimum recommended tensile (breaking) strength for a rescue rope used in swiftwater operations according to NFPA 1983 technical use standards?

Accepted Answer

20 kN (4,500 lbf)

Answer

4.5 kN (1,000 lbf)

Answer

9 kN (2,000 lbf)

Answer

40 kN (9,000 lbf)

Question 5

A 'load-releasing hitch' (such as a Mardsen or Radium release) is incorporated into a tensioned rescue rope system for what critical reason?

Accepted Answer

To allow the tensioned rope to be safely eased after the load is on it

Answer

To increase the mechanical advantage ratio

Answer

To prevent the rope from sliding through anchor rings

Answer

To color-code rope segments for easy identification

Question 6

When establishing a high-line (Tyrolean) rope system across a river for patient transport, what is the most critical factor in anchor selection?

Accepted Answer

Anchors must each be able to withstand the full system load independently

Answer

Anchors must be at equal height on both banks

Answer

Anchors must be natural features only (trees/boulders)

Answer

Anchors must be placed exactly perpendicular to the current

Question 7

When inspecting a rescue rope before use, which defect is considered a mandatory retirement criterion under NFPA 1983?

Accepted Answer

Visible core damage or cut through the sheath

Answer

Slight discoloration from UV exposure

Answer

Minor stiffness from cold temperatures

Answer

Surface dirt that has not been washed off