Ropes & Knots.pdf - Los Angeles County Firefighters Association

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12 LOS ANGELES COUNTY FIRE DEPARTMENT CONTEXT TRAINING PROGRAM LOWERING SYSTEM GENERAL INFORMATION The ability to construct and operate a lowering system to lower a rescuer to a victim is one of the most basic and widely used rescue systems. A lowering system is preferred to rappelling, as it allows the rescuer to have both hands free to tend to the victim. The construction of this system requires the knowledge of several Department recognized knots and the ability to assemble basic rope systems (See: Volume 4 Chapter 6.) The necessary knots required are: - Figure eight stopper knot - Figure eight on a bight - Water knot - Half hitch - Larks foot - Square knot - Prusik Hitch - Mariner’s Knot LOWERING AND SAFETY LINE 1. Constructing a lowering line and a safety line: a. Attach two separate anchor systems at ground level to one secured vehicle for main line and safety line. b. Attach a friction device to the main line, and a Mariner’s Knot with tandem prusiks to the safety line. c. Utilize a field rope bag (250') for the lowering line and another field rope bag for the safety line if the length of the raise is over 100'. (If the length of the raise is under 100', then one field rope bag can be used for both lines.)
13 LOS ANGELES COUNTY FIRE DEPARTMENT CONTEXT TRAINING PROGRAM LOWERING AND SAFETY LINE cont: 2. Packaging the rescuer to be lowered a. Use the adjustable rescue belt for a pelvic harness. b. Use the blue webbing (12') to construct the chest harness. c. Attach a carabiner to each harness. 3. Line tending: a. All line tenders shall wear appropriate Personal Safety Equipment including helmet, goggles and gloves. b. Provide one-Firefighter to tend the lowering line and another Firefighter to tend the safety line. 4. Attach the rescuer to the lowering and safety lines: a. Tie a figure eight on a bight on the ends of the lowering line and safety lines. b. Attach pelvic and chest carabiner to the safety line figure eight on a bight. c. Attach pelvic harness carabiner to the lowering line figure eight on a bight. d. Lock both carabiners. NOTE: DO NOT BACK OFF THE CARABINERS. 5. Lower the packaged rescuer: a. Apply tension on the lowering and safety lines. b. Lower the rescuer by slackening both lines and monitor the rescuer's progress carefully.
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Ropes & Knots.pdf - Los Angeles County Firefighters Association

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