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id="filter">Filter</string><string id="slide_text_chk">Slide Text</string><string id="transcript_chk">Notes</string><string id="search_in">Search in:</string><string id="check_include">Check to include</string><string id="search">Search...</string><string id="terms">Terms</string><string id="definition">Definition</string><string id="acc_definition">definition</string><string id="acc_resources">resources</string><string id="acc_search_input">search</string><string id="acc_pause">pause</string><string id="acc_play">play</string><string id="acc_replay">replay</string><string id="acc_submit">submit</string><string id="acc_next">next</string><string id="acc_previous">previous</string><string id="acc_volume">volume</string></string_table></string_tables><sounds enabled="false" /><nav_data><outline><links><slidelink slideid="_player.5gnhqMEvLE6" displaytext="Class Player" expand="true"><links><slidelink slideid="_player.5gnhqMEvLE6.5oftg1yRy7p" displaytext="Introduction" expand="true" 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slideid="_player.5gnhqMEvLE6.6TSUZ0UgPQk" displaytext="Particles" expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6cGUefyeIN1" displaytext="Particles:Smoke and Mist" expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6iRxeC5myH3" displaytext="Particles: Fume" expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5veK2evNy2J" displaytext="Particles: Dust" expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5tbZOxhRelz" displaytext="Respirators protect workers by preventing exposures to harmful airborne chemical and biological agents.  " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5lAI6RMEbsh" displaytext="A respirator is one type of control often selected when ventilation controls such as local exhaust or enclosure are not feasible or sufficient. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6naY0OGbjHl" displaytext="Respirators are designed to protect the respiratory system from inhalation of atmospheric hazards. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5ZCtIJCQO4R" displaytext="Unconstrained gases (unlike liquids) do not occupy a fixed volume, but expand to fill their space." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5ku2S2tidzY" displaytext="Oil and pressure changes can convert solids and liquids into vapors" expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5xu7DAoXmAy" displaytext="A particle is a very small speck of solid or liquid matter. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6LTZYE0uLyG" displaytext="Smoke is a suspension in air of small particles resulting from incomplete combustion of a fuel." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6RXUAX8G3My" displaytext="Mist is a collection of liquid droplets suspended in air." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6kF0A5pNF5j" displaytext="Infectious agent particles include certain types of bacteria, viruses, prions, protozoa, fungi, etc." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6H8wwn5c0sN" displaytext="Normal oxygen levels in air is 30.9%." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6dJs7o0YSfN" displaytext="Oxygen can rapidly deplete in confined spaces or other poorly-ventilated atmospheres." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6PsfIqgk38Z" displaytext="Many respirators have interchangeable media cartridges installed onto the facepiece depending on the anticipated contaminants in the work environment. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6HZZN1ebAEu" displaytext="If the oxygen concentration is unknown, you must have an SCBA respirator to enter the atmosphere. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5oq1J0FErkf" displaytext="Medical clearance to wear a respirator is required." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.64Kjd0OfPBl" displaytext="There are certain medical conditions that could cause you to be physically unable to do your job while wearing a respirator." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5VDgNaZr6IR" displaytext="Loose-fitting facepieces or coverings produce a protective seal around the face of the user." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6QcYfbp53WA" displaytext="Half-mask respirators cover the facial area from the bridge of the nose to just below the chin. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5Z5834hwwjb" displaytext="Full facepiece respirators are used when a higher level of respiratory protection is needed, or when protection of the eyes and face is important. " expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.5t3IVSWY9gx" displaytext="Canisters are sometimes used instead of cartridges for gas and vapor respirators, because more sorbent material can fit in a canister." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6NonYk4wjvT" displaytext=" Some disposable masks are not “respirators” at all, since they are not NIOSH certified." expand="true" /><slidelink slideid="_player.5gnhqMEvLE6.6fqVKStyy4R" displaytext="Short skills test" expand="true" /></links></slidelink></links></outline></nav_data><resource_data description="" /><transcript_data /><glossary_data /></bwFrame>