Industrial Hygiene questions
Question 1
You are an industrial hygienist conducting personal sampling on a worker who is overseeing a production process involving use of acetone (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 1000 parts per million (ppm) of acetone). You are able to measure the following exposures:<\/p>\n
700 ppm for 3 hours<\/p>\n
1300 ppm for 2 hours<\/p>\n
900 ppm for 3 hours<\/p>\n
What is the calculated TWA? What would you tell plant management in terms of exposure to acetone and compliance with the PEL?
Attach File
Question 2
Please solve the following problem, indicating your response on a Word document and submitting the document via File Upload.<\/p>\n
Using the following formula, solve the problem below, and show your work.
TWA = CaTa + CbTb + \u2026 + CnTn<\/p>\n
8<\/p>\n
TWA = Time-Weighted Average
Ca = Concentration of contaminant during the sampling period \u201ca\u201d
Ta = Time of sampling period \u201ca\u201d
Cb = Concentration of contaminant during the sampling period \u201cb\u201d
Tb = Time of sampling period \u201cb\u201d
Cn = Concentration of contaminant during the sampling period \u201cn\u201d, where \u201cn\u201d is the last of a series of contaminants
Tn = Time of sampling period \u201cn\u201d
Note: All concentrations are in parts contaminant per million parts of air or milligrams of contaminant per cubic meter of air.<\/p>\n
Air Sampling Problem: You are an industrial hygienist that is conducting personal sampling on a worker who is overseeing a production process involving use of toluene (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 200 parts per million (ppm)). You are able to measure the following exposures:
500 ppm for 1 hour<\/p>\n
100 ppm for 4 hours<\/p>\n
225 ppm for 3 hours<\/p>\n
What is the calculated TWA? What would you tell plant management in terms of exposure to toluene and compliance with the PEL?
Attach File<\/p>\n","protected":false},"excerpt":{"rendered":"
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