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22 terms

Toxicity- ChEn 311

Dr Wilding ChEn 311 Exam II
STUDY
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TLV
Threshold Limit Value- For a normal 8-hour workday, to which nearly all workers can be exposed day after day without adverse effects
TWA
Time Weighted Average. (C1t1+C2t2+Cn*tn)/(8 hrs)
IDLH
Immediately Dangerous to Life or Health
NOAEL
No Observed Adverse Effect Level
STEL
Short Term Exposure Limit- max concentration to which workers can be exposed for 15 min without suffering
TLV-C
Threshold Limit Value- Ceiling Limit. Should not be exceeded, even instantaneously
PEL
Permissible Exposure Level
VCE
Vapor Cloud Explosion
BLEVE
Boiling Liquid Expanding Vapor Explosion
Pyrophoric
Spontaneously combust in the presence of air
Detonation
Extremely Rapid and Violent Decomposition, produces a shock wave. (class A explosives- 5 PSI is lethal)
Deflagration
Very rapid, often violent decomposition. Rapid burning (class B explosives, no shockwave if unconfined)
Flash Point
Lowest Temperature needed to vaporize enough fuel to form a flammable mixture in air.
Fire Needs
Fuel, Oxidizer, Ignition Source
Overpressure
Pressure above Atmospheric Pressure
Organic Peroxide
Any liquid or solid with oxygen in its structure (fuel and oxidizer)
Picric Acid
TrinitroPhenol (pyrophoric)
Napthalene
eye goggles
Icosane
C20H42
Dithyl Ether
"bat"
MAWP
Maximum Allowable Working Pressure
MTBF
Mean Time Between Failures