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10/17/2019 <br /> � I <br /> CRYOGEN SAFETY <br /> o Ex:Liquid Nitrogen <br /> o Hazards of Cryogenic Liquids: <br /> • Extreme cold,cold burns,frostbites <br /> • Asphyxiation due to oxygen displacement <br /> • Explosion due to over-pressurization/improper storage <br /> o PPE: <br /> • Minimum PPE as stated previously <br /> • Additional: <br /> o Gloves:Insulated preferred but leather work gloves are also okay <br /> o Full face shield and/or splash resistant safety goggles. <br /> o Storage and Handling: <br /> • Handle carefully and be familiar with hazards associated with cryogen use. <br /> • Store and work in open,well-ventilated location.Consider oxygen monitor for <br /> prolonged use or for storage areas. <br /> o If skin comes into contact with cryogen: <br /> • Run the area under cool or warm water for 15 minutes;never hot or cold water. <br /> • Do not rub burned area. <br /> • Seek medical attention. <br /> PYROPHORIC SAFETY <br /> o Pyrophoric materials:Substances that ignite instantly upon exposure to <br /> atmospheric oxygen and/or water vapor. <br /> o PPE: <br /> • Minimum PPE as described previously. <br /> • Wear lab coat made from materials not easily ignited(100%cotton or Nomex®). <br /> Avoid wearing synthetic clothing underneath if possible. <br /> • Consider use of FR gloves(in addition to nitrile gloves)for handling. <br /> o Storage and Handling: <br /> • Store under inert gas or kerosene as appropriate. <br /> • Avoid storing in areas with heat,flames,oxidizers,or water sources. <br /> • Use in a glove box(ideal)or a fume hood under dry,inert atmosphere(Schlenk <br /> techniques). <br /> o Emergency Procedure: <br /> • Spill:Powdered lime,dry sand,clay based kitty litter to completely smother and <br /> cover any spill.DO NOT USE WATER! <br /> • Fire:Use Class D(yellow)fire extinguisher if available,otherwise try to smother <br /> with any of the nonflammable solids listed above.If the fire is too large,GET <br /> OUT and call Public Safety. <br /> • If person is exposed or on fire;use the stop,drop,and roll methods,safety <br /> showers,fire blankets,appropriate fire extinguisher.Seek medical attention. <br /> • Even if the incident is resolved,contact Public Safety. r <br /> 10 <br />