Knot List: Radium Release Hitch ‐ Step-by-Step
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Radium Release Hitch TyingTie a Figure 8 Loop Knot in the end and hook it into the lower carabiner. Pass a loop through the top carabiner and then through the lower one. Tie a Munter Hitch in the top carabiner. Use a bight to tie a Half Hitch and then an Overhand Knot. Untie these knots to lower the load.
Radium Release Hitch Details
Radium Release Hitch is a load-releasing hitch used in a two-rope technical rescue system.
Uses: - The Radium Release Hitch allows a load to be transferred from one rope to another if, for example, a Prusik Knot jams or a belay line's auto-stop engages. It is commonly rigged prior to the operation by a Search and Rescue team on the belay line anchor. The primary function of this hitch is to transfer load back to the main load line if the belay line's auto-stop becomes engaged. The resulting stoppage of the belay line can be due to a variety of causes including: main line load being lowered too quickly for the belay line operator to keep up or actual main line failure.
Preparation: The Radium Release Hitch is often prepared in advance using about 10 meters (33 feet) of 8 mm static cord. It can be stored in a pouch or bag for protection.
Advantages: The Radium Release Hitch provides a controlled load-release and can readily be tied off again if needed.
Disadvantages: The rig as typically used employs a three to one load release which uses rope quickly and limits the descent to only about three meters.
Disclaimer: Any activity that involves ropes is potentially hazardous. Lives may be at risk - possibly your own. Considerable attention and effort have been made to ensure that these descriptions are accurate. However, many critical factors cannot be controlled, including: the choice of materials; the age, size, and condition of ropes; and the accuracy with which these descriptions have been followed. No responsibility is accepted for incidents arising from the use of this material.