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37 Cards in this Set
- Front
- Back
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Hepatoxins (name 3) |
Carbon tetrachloride
MnBK Tetrachloroethane Halogenated hydrogcarbons Mercury |
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Nephrotoxins (name 3)
(kindey) |
Halogenaged hydrocarbons
Antimony (stilibine gas through interaction w H) Uranium |
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Skin
(2) |
acrylates
Nickel |
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Hypersensitivity pneumonitis
occurs _ to _ hr after exposure to to what agents ? name 4. Sx |
isocyanates
epoxies formaldehyde biological agents (farmer's lung, byssinosis and bagassosis) Sx: chills, malaise, fever, cough, and dyspena |
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Heart sensitization
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cardiac tissue becomes sensitized to catecholamines (adrenaline) which can lead to cardiac arrhythmia and respiratory arrest.
Agents: Chloroform, TCE, fluorocarbons |
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Upper respiratory irritants
_ water solubility name 6 |
high water solubility.
formaldehyde, acroline, ammonia, sulfur dioxide, chlorine, ozone |
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Lower respiratory irritants (2)
_water solubility |
low water soluble
2-4 hours delayed pulmonary edema. NOx, phosgene |
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Repoductive male (5)
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DBCP (dibromochloropropane - crop nematicide)
cadmium nickel methyl mercury lead |
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Reproductive female (1)
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glycol ethers
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Lung cancer
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Cadmium
Nickel Chromium Beryllium Arsenic Formaldehyde |
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Distribution site?
Lead -organic: ? -inorganic: ? |
Lead
-organic: CNS -inorganic: bone, teeth |
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Distribution site?
Mercury -organic: ? -inorganic:? |
Mercury
-organic: CNS -inorganic: kidney |
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Nerves (3)
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metals
organophosphates solvents |
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Farmer's lung
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mycotic (Aflatoxins) infection, moldy hay
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Scintillation/Fluorescence
measures ? |
Alpha
Wipe sample > vial with scintillation liquid. Alpha decay which causes light flashes in liquid. > flashes are counted. |
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Geiger-muller measures?
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beta and gamma radiation
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Vaneaxial
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highest effciency axial
medium to high SP |
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propellar / panel
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low pressure, high volume.
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What is a vortex tube?
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a mechanical device that separates a compressed gas into hot and cold streams.
Used for the cooling of cutting tools (lathes, mills, etc) during machining. |
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when is a vertical elutriator used?
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cotton dust sampling.
The elutriator separates the large particles out, inhalable dust <15 microns is collected by the filter collected on a 37mm PVC. |
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if a duct diameter is <6" do a _-point traverse?
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6 point traverse
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if a duct diameter is 6-48" do a _-point traverse?
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10-point traverse
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_-shaped hood has the best coefficient of entry (0.98)
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Bell-shaped
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reynolds number _ = laminar flow
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reynolds number <2100 = laminar flow
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reynolds number _ = turbulent flow
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reynolds number >4000 = turbulent flow
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critical orifice is dependent on?
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critical orifice is a flow retulator that is dependent on humidity and temp
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benefit of a baffle?
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provides better air distribution
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_ fans are best for LEV systems?
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centrifugal
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If two branches are entering a main duct, a difference of _ " or greater bwn main VP and the two branches should be corrected.
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0.1"
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most commonly used centrifugal fan in industry for LEV system sis ?
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radial
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what fan type is the most efficient?
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backward curved blades
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high volume, low pressure drop is characteristic of?
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axial fan
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protects whats in the room
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positive pressure
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protects whats outside of the room
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negative pressure
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acid rain is a combination of ?
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SO2 and NOx
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scrubbers are used for?
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gas and vapors
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Change in air temperature with pressure increase and alititude
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adiabatic lapse rate
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