CHEM 208 Lecture Notes - Lecture 4: Frostbite, Teratology, Harmonized System
23 Jan 2017
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Document Summary
In a workplace, the worker may be exposed to: Material handling hazards: muscle strain due to lifting/carrying materials. Machine hazards: rotating shafts, moving belts, presses etc. can cause serious injury. Energy hazards: energy sources (electricity, steam, hydraulic pressure) can lead to injury. Work practice hazards: failure to follow safe operating procedures may lead to serious injuries. Con ned space hazards: hazards arise due to dif culty of entry and exit, build-up of hazardous materials and oxygen de ciency. Physical hazards: presence of physical agents such as pressure and temperature extremes, excessive noise and vibration, and exposure to radiation. Hyperbaric: pressure higher than normal atmospheric pressure (low elevation;mining & underwater) Hypobaric: pressure lower than atmospheric pressure (high elevation; airline pilots) Intense vibration can cause serious health problem (whole-body and hand-arm vibration) Ionizing radiation: high energy, strong enough to damage cells and dna (x-rays, alpha, beta and gamma rays, high energy ultraviolet)
