Rope Rescue Ops 1 2023 Q&A

NFPA 1670 Standard on Operations and Training for Technical Rescue Incidents NFPA 1983 Standard on Life Safety Rope and Equipment for Emergency Services, establishes minimum strength, dimension, etc. for rope, hardware, and harnesses. 1 kN is how many lbs? 225lbs Awareness Level Recognizing the need for rope rescue Operations Level Moving victims and responders from one place to another safely NFPA 1006 Standard for Technical Rescuer Professional Qualifications General Use Minimum Breaking Strength 40kN or 9000lbs MBS Minimum Breaking Strength General Use Elongation Limit Up to 10% of the minimum breaking strength Required Construction Type for Life Safety Rope Block creel construction Block Creel Construction Method of manufacturing rope without any knots or splices; a continuous strand of fiber runs the entire length of the rope's core. Kern means what? Core of the rope Kern is what percent of the strength? 85% Mantle means what? Exterior of the rope Mantle is what percent of strength? 15-25% Life safety rope is constructed of what? Nylon or polyester Nylon loses what percentage of its strength from water? 10% Can nylon be damaged by acid? Yes Polyester has more or less stretch than nylon? Less It is okay for rope to be less than 5 years old, inspected and documented quarterly if it is used for what? Rescue It is okay for rope to be less than 10 years old, inspected and documented quarterly if it is used for what as long as it has never been shock loaded, exposed to heat, damaged, etc? Training It is okay for rope to be more than 10 years old if it is used for what? Practice rope, out of compliance What is a pic? The small square on a rope where the weaves meet. What % of a pic needs to be damaged in order to be called an abrasion? 50% How many pics need to be damaged in a row to take it out of service? 7 Why don't we coil ropes? They can tie themselves in knots Type of cordage to get 8mm cordage from major manufacturer with MBS of around 3300lbs Prusik loop loop of rope, smaller in diameter than the climbing line, used for the secured footlock method of ascending a rope. Can be tied or sewn. Tubular webbing's breaking strength is what? 4000lbs per strand Flat webbings breaking strength is what? 6000lbs per strand When webbing and prusiks show wear or damage you should do what with it? Get rid of it Standing end of a rope The part that goes back to the rope bag on the other end of the knot working part of rope Where you tie the knot Running end of the rope The tail of the rope, after the knot What is a bend? Tying two ends of rope together What is a hitch? A knot that requires a host object, and that falls apart without the host object Loss % of MBS when a tight turn or knot is made in a rope 25-30% reduction What is the piece of equipment used to connect other pieces of equipment together? Carabiner 3 categories of anchors 1. Marginal 2. Substantial 3. Bombproof Substantial Anchor An anchor that we can reasonably expect to hold 10 times the intended load (usually 2 people, or 6000lbs) Bombproof Anchor A structure that can reasonably be expected to hold 15 times the intended load (same as general use rope, about 9000lbs) 5 criteria for an anchor 1. Mass 2. Construction 3. Location 4. Intended use and load 5. Condition Methods for using cable as an anchor Straight and basket Methods for using strap webbing as an anchor Straight, basket, choker Methods for using loop webbing as an anchor Basket and wrap 3 pull 2 Materials to use as an anchor Cable, webbing, rope Webbing basket hitch strength 9900 Wrap 3 pull 2 strength 9100 Less than 8 degree angle on an anchor has each end supporting about what percentage of the weight of the load? 50%