MFRI Site Ops (Rope Rescue) 2021 test questions and answers

High-angle environment A very steep environment in which the load is predominantly supported by the rope rescue system. belayer The rescuer who operates the belay system Rope access A set of techniques where ropes and specialised hardware are used as the primary means of providing access and support to workers single rope technique (SRT) Ascending or descending directly on the rope without direct aid from contact with the rock walls or structure Rope Rescue Rescue in high angle and steep slope environment where the use of rope and related equipment is necessary. Carabiner Metal load bearing connectors with a self closing gate used to join elements of a high angle rope system UIAA Union of International Alpine associations CEN European committee of standardisation ASTM International Formerly, American Society for Testing and Materials seat harness A system of nylon or polyester webbing that wraps and supports the pelvic region to attach the wearer to the rope Class II Harness A harness meant for heavy duty work by one person or in rescue situations in which another person's weight may be added Class III Harness A full body harness meant for fall protection and rescue where inversion may occur Suspension trauma If a potentially fatal condition that can occur when a person hangs motionless in a seat harness for a long period Emergency Seat Harness A temporary tied harness used when others aren't available. AKA hasty harness Dynamic Rope Rope designed to stretch under load, reducing the shock of impact after a fall. Abrasion The damaging wear on rope and other equipment caused by rubbing against a brace of material General-Use Rope N FPA classification for rope intended for general use where higher loads or a greater safety are needed Low stretch rope Type of rope designed to be used in applications such as rescue repelling and descending in which high stretch would be a disadvantage and no falls or very short falls are expected Kernmantle Rope Rope that consists of a protective shield (mantle) over the load-bearing core strands (kern). Static rope Rope designed not to stretch under load. Used in application such as rescue repelling and ascending in which high or moderate stretch would be a disadvantage tensile strength A measurement of the greatest lengthwise stress under slow pull conditions that a rope can resist Laid Rope Rope made by twisting 3 or more strands together. Plain or Hawser laid ropes at 3 strands. Shroud laid ropes have 4 strands System safety ratio The ratio between the maximum load expected on a system and its breaking strength. Load ratio The ratio of the components meant of embraking strength to the anticipated load Life safety rope Broken tended to support people during rescue fire fighting or other emergency operations Moderate elongation laid life saving rope Rope dedicated for the purpose of supporting people during rescue at firefighting operations with greater elongation than static or low stretch ropes Minimum breaking strength The result of subtracting 3 standard deviations from the mean result of the lot being tested Kevlar Rope material made from aramid fibre. High tensil strength low elongation and high resistance to heat. polyester Manufactured fibre often found in the core of very low stretch static ropes. Also known as dacron Nylon 6 Nylon used in rope manufacturing because of its shock absorbing qualities. Also known as perlon Nylon 6,6 Type of nylon used in rope manufacturing. Resistant to wear and reduced elevation under load NFPA 1983 NFPA standard on life safety rope and equipment for emergency services HMPE Is high modulous polyethelene. A rope material made from polyethylene yarn with a high tensile strength that floats on water. Also known as spectra Polyolefins Polypropylene or polyethylene ropes often found in water activities activities 2 types of rope fibres Is natural and synthetic 2 types of webbing tubular and solid 3 Sigma method Is a statistical method for calculating minimum breaking strength Creep The gradual extension of rope overtime went under load D-shaped carabiner The design that takes the greatest advantage of strength of the spine Edge rollers Free turning rollers anchored at the edge of a wall or a cliff base to reduce rope fiction to prevent abrasion Carabiner designs Oval, D shape, modified D shape, HMS Parts of a carabiner Spine, latch, gate, henge, nose Kilonewton Unit used to measure the strength of carabiners. One kilonewton equals a 1000 N or 225 pounds of force "T" carabiners Carabiners that meet the N FPA standard for technical use. Breaking strength of 27 kilonewtons or 6075 pounds of force "G" Carabiners Carabiners that meet the N FPA standard for general rescue use. Minimum breaking force of 40 kilonewtons or 9000 pounds of force