Reference no: EM131216105
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:
700 ppm for 3 hours
1300 ppm for 2 hours
900 ppm for 3 hours
What is the calculated TWA? What would you tell plant management in terms of exposure to acetone and compliance with the PEL?
Question 2
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.
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
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?
Can a collaboration of educations exist
: Can a collaboration of educations exist? If so, how? If the decision is made to increase focus, funding, and new hiring for professional and technical fields will this decrease morale for the staff who teach liberal arts?
|
Examine the spectra of the modulated signals
: Develop the demodulation circuit corresponding to Illustration 154. Rectification should be shown by the „absolute value" process (module "arithmetics"), the RC circuit by lowpass filtering. See also Illustration 155
|
How much will whole company profitability increase-decrease
: Stanco Inc. has two divisions, Electronics and Clocks. The Electronics Division (which is operating at capacity) , makes a specialized circuit borad called SA5 which it sells to its regular customers for $14 each. Suppose the total demand for the new..
|
Draw a graph of composite profile and find junction depth
: Draw a graph of the composite profile and find the junction depth(s) if the phosphorus background concentration is 10 1 6 /cm3.
|
What is the calculated twa
: What is the calculated TWA? What would you tell plant management in terms of exposure to acetone and compliance with the PEL?
|
Determine the effects of executives proposed changes
: Ralph Industries is experiencing lower than expected sales. The company’s executives agreed that in order to make up some of the lost revenue’s impact on the bottom line, expenses must be lower. Determine whether the proposed change in assets’ useful..
|
Develop an am generator by means of the module
: Develop an AM generator by means of the module "formula interpreter" which implements the AM formula given on page 236 and with which the degree of modulation m, fLF and fcarrier can be set. Select ÛLF = 1 V
|
How is the input parameter of measurement system done
: How is the input parameter of measurement system done? - Show the input. - Show the output. - Show the other parameters.
|
Identify new questions you have now that you have discovered
: Identify new questions you have now that you have discovered more about the issue. Explain how you might apply the critical analysis and research skills you have been practicing this week to your student and professional roles.
|