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Related Flashcards
Related Topics
Cards In This Set
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Compressed Gas
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Any material/mixture having an abs pressure exceeding 40 psia
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Identifying compressed gas
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Permanent markings stenciled or stamped on cylinder;
specification number, cylinder serial number, date of initial hydrostatic testing, inspectrs insignia
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Compressed gas components
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Cylinder cap, valve, valve packing nut, valve handwheel, pressure relief device, outlet connection, CGA number, cylinder collar
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Pressure regulators
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Reduce high pressure supplied gas to lower pressure
maintains flow level
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CGA
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Compressed gas association
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Handling of compressed gas
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Check for leaks
secure cylinders
regulators are gas specific
no lube
no smoking/flames
turn gas off before suppressing flames
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Acetyline cylinders
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Must be stored upright
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Transporting gas cylinders
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Use gas cylinder cart with straps
closed valve with cover cap
handle one at a time
no elevators
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Empty gas cylinders
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Never empty completely, empty to 25 psi
close valves, remove regulator, replace cap, lable as empty, return to storage, store with other empties
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Electric current
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Flow of electrons
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Current measured in
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Coulombs
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Direct current
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Flow of electrons in a loop (battery)
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Alternating current
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The electrons moving back and forth
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Current frequency
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Number of times the current reverses direction in 1 second
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Conductor
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Material that contains mobile charged particles, low resistance
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