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QUESTION
Solvents are among the most commonly used chemicals in workplaces. Workers in different jobs regularly use solvents for degreasing, metal cleaning, and as paint thinners or lubricants.
(a) Outline at least ten factors to be considered when assessing the health risks from exposure to solvents in a factory producing home furniture with a range of painted and varnished finishes.
(b) Solvents have been observed to show neurotoxicity. Explain the term neurotoxicity. List the neurotoxicity symptoms normally associated with short-term and long term exposure to vapours of solvents.
(c) List and elaborate in terms of priority at least five possible measures you would adopt to control the exposure of workers to solvents
(d) An industrial continuous process liberates 0.2 Cubic meter of a solvent chlorobenzene per hour into a room that measures 6.0 meters by 12.0 meters feet and has a ceiling of 4.0 meters height. What minimum general exhaust ventilation in cubic meters per minute is necessary to prevent a general health hazard in this room? The PEL for chlorobenzene is 75 ppm
good understanding of Mil-Std-499 and Mil-Std-499A
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A worker has received an electric shock from a 240 volt portable drill whilst installing a set of wooden shelves State the principle of operation of each of the following protective devices 1) Residual current devices 2) Fuses
To examine the relationship between fermenter design and operating conditions, oxygen transfer capability and microbial growth.
(a) What are the three simple categories of conventional welding? Which of the three is the cleanest and most healthful? Explain your answer (b) Why should acetylene cylinders be stored valve end up? Explain the safety measures required for the st..
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