包邮化工专业英语

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《化工专业英语》：中国石油和化学工业行业规划教材·高职高专化工技术类。

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插图：While similar in its effects to the BLEVE discussed above, unconfined vapor cloudexplosions （UVCES） are another combustion process creating major emergency problems, butonly recently recognized as a threat of total devastation to process plants and surroundings.Chemicals as diverse as hydrogen, ethylene, butane, LPG, cyclohexane, ethylene oxide, ethylchloride, isopropyl alcohol, acrolein, and vinyl chloride, as well as crude oil, have caused seriousUVCEs.Uncontrolled ReleaseWhen a container or containment system fails, the resulting spill or release may have effectswhich may be dramatic or undetected. Chemical materials have a wide range of properties,producing effects of diverse nature. It is difficult to separate chronic from acute emergenciesin this context, since at some point, the chronic low level release may reach a point orconcentration that at least for some persons at high risk, is very acute.2Time-Bomb of Toxic or Explosive Materials from Improper DisposalHazardous-waste management is not a new problem, but its effects, while still largelyunappreciated, are rapidly becoming acute emergencies.3 Pollutants previously discharged intowaterways and atmosphere often accumulate, even when diluted, and become part of thebiological chain. Hazardous wastes may contain toxic chemicals, pesticides, acids, caustics,infectious, radioactive, carcinogenic, flammable, or explosive materials.BiohazardsBiological hazards, also known as biohazards, refer to biological substances that pose a threat tothe health of living organisms, primarily that of humans. This can include medical waste orsamples of a microorganism, virus or toxin （from a biological source） that can impact humanhealth. It can also include substances harmful to animals. Biological hazards are not alwaysvisible, but they must never be overlooked.