Please see the order instructions Essay Example | Topics and Well Written Essays - 500 words

Please see the order instructions - Essay Example helmets, ensuring ventilation, timing of work and machinery etc. forms of engineering controls include design and modification of machinery, providing ventilation systems etc. (Goetsch 120-250). There are majorly four modes of contaminants entry into a body: the first is ingestion where an individual ingests (eats or drinks) a chemical by accident. The second is inhalation where airborne contaminant e.g. fumes and vapors can be inhaled directly into the lungs. The third mode is absorption where a contaminant E.g. chemical powder, enters the body through skin openings and lastly injection where an individual may accidentally cut or step directly onto contaminated object thus injecting himself with a contaminant, for example a knife cut (Goetsch, 120-250). Threshold Limit value-Time-Weighted Average (TLV-TWA) means the average concentration of a chemical to which it is acceptable to expose a worker over a certain period of time usually 8 hours. Threshold Limit Value-Short Term Exposure Limit (TLV-STEL) means the maximum concentration that is recommended for a continuous 15-minute exposure time. Threshold Limit Value-Ceiling exposure value (TLV-C) means the limit exposure that should not be exceeded under any circumstances. Permissible Exposure Limit (PEL) is a value approved by law that spells out the maximum time exposure allowed to a hazardous chemical (Oxford University). There are four classifications of environmental stressors and these include physical hazards caused by loud noise and vibrations, chemical hazards resulting from chemical burns and sprays, fumes and explosions, biological hazards caused by viruses, bacteria, vermin etc. and ergonomic hazards caused by tools and work conditions such lighting, ventilation etc. (Reese, 150-175). First, Employers are expected to train and provide information to employees of the classes of chemicals that