INDUSTRIAL HYGIENE
- Please solve the following problem, indicating your response on a Word document and submitting the document via File Upload.
Using the following formula, solve the problem below, and show your work.
TWA = CaTa + CbTb + … + CnTn
8
| TWA | = | Time-Weighted Average |
| Ca | = | Concentration of contaminant during the sampling period “a“ |
| Ta | = | Time of sampling period “a“ |
| Cb | = | Concentration of contaminant during the sampling period “b” |
| Tb | = | Time of sampling period “b“ |
| Cn | = | Concentration of contaminant during the sampling period “n“, where “n” is the last of a series of contaminants |
| Tn | = | Time of sampling period “n“ |
Note: All concentrations are in parts contaminant per million parts of air or milligrams of contaminant per cubic meter of air.
Save your time - order a paper!
Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines
Order Paper NowAir 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
100 ppm for 4 hours
225 ppm for 3 hours
What is the calculated TWA? What would you tell plant management in terms of exposure to toluene and compliance with the PEL?
Reference:
Haight, J. M. (Ed.). (2012). Recognition, evaluation, and control of workplace health hazards. Des Plaines, IL: American Society of Safety Engineers.
Looking for a similar assignment? Our writers will offer you original work free from plagiarism. We follow the assignment instructions to the letter and always deliver on time. Be assured of a quality paper that will raise your grade. Order now and Get a 15% Discount! Use Coupon Code "Newclient"
