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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
Describe the various methods of methane drainage available to drain gas for longwall mining operations and methane drainage of longwall operations what factors influence the spacing of drainage boreholes?
Describe the method of undertaking an anemometer traverse for a mine airway and describe the two main methods of undertaking a pressure survey in a mine. What advantages and disadvantages do each method have?
Determine the cumulative exposure in WLM and determine the rate of emanation into the stope - working level of radon daughters at exit due to the initial radon
Your task will be to analyse a proposed redesign of the de Havilland Vampire tail booms (not to be confused with a boom in your hand calculations) in an all metal configuration
question 1a worker has received an electric shock from a 240 volt portable drill whilst installing a set of wooden
Installation of FM radio, At this time working at (xxxplace) I did budget requisition for equipment needed for radio installation.
Determine how to load each truck by deciding on how many units of the product will be delivered to each by each truck. While doing so, you need to make sure that each store is delivered with exactly the number of units of the product they require.
determine the value of the suspended tension load at the top of drill pipe and using the graph of pore/fracture pressure for the Holly Field propose a casing scheme for the well using the graphical approach. Discuss the suitability of the selected..
1. prepare a schematic diagram below of the major parts of the sem filament anode wehnelt condenser lens objective lens
What is happening to the a 0 dimension of the unit cell of the andalusite crystal structure, when it is being heated?
reading assignments - read and have a good understanding of mil-std-499 and mil-std-499a. be sure that you have
Environmental engineering, CEE 357 Winter 2014. HW#6 Assignment: - Find the ultimate BOD of the river water as it enters the lake. Find the value of the rate constant for BOD utilization in the river, k d,riv .
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