Industrial Hygiene

For this assignment, you will complete the Unit IV Case Study Worksheet . This assignment will allow you to demonstrate what you have learned in this unit.

Access the Unit IV Case Study Worksheet in Blackboard to complete this assignment. Save all of your work directly to the template.

I am copying the template below but will also upload it as a attachment.

Industrial Hygiene Unit IV Case Study

This assignment will allow you to demonstrate the following objectives:

• Describe sampling methods to be used for evaluating health hazards in the workplace.

• Calculate the volume collected for personal sampling using the flow rate and sampling time.

• Calculate the concentration of a sample given the laboratory analytical result and sample volume.

• Calculate sample results from mg/m3 to ppm.

Instructions: Complete your work directly on this document. When you are finished, select “Save As,” and save the document using this format: Student ID_UnitIV. Upload this document to BlackBoard as a .doc, docx, or .rtf file. Show all of your work.

You are asked to evaluate employees’ exposures to methyl n-amyl ketone during a painting operation. After careful consideration, you choose and will use NIOSH Method 2553 for the sampling.

Your pre-sampling and post-sampling pump calibrations using a primary standard are both 0.05 L/min. You collect personal samples on two employees working in the operation. The samples are collected for 430 minutes (Sample 1) and 440 minutes (Sample 2).

1. Calculate the sample volumes for each of the samples.

The laboratory reports that the front section of Sample 1 contains 5,000 µg of methyl n-amyl ketone and the back section contains 200 µg of methyl n-amyl ketone. The front section of Sample 2 contains 4,000 µg of methyl n-amyl ketone and the back section contains 50 µg of methyl n-amyl ketone. Neither the front nor back sections of the field blank you supplied contain any detectable levels of methyl n-amyl ketone.

2. Calculate the concentrations of the two personal samples in µg/L and mg/m3.

3. Convert the result to ppm (MW for methyl n-amyl ketone = 114.2). Note: Use the ideal gas constant of 24.45.

4. Show all the steps for your calculations.

You then reference OSHA’s Table Z-1 and find that the 8-hour TWA PEL for methyl n-amyl ketone is 100 ppm.

5. Discuss how the results of the two personal samples you collected compare to the OSHA PEL, and describe the sampling method you implemented.

You also look up the ACGIH TLV for methyl n-amyl ketone and find that the TLV is 50 ppm as an 8-hour TWA exposure.
6. Discuss how the results for the two personal samples compare to the ACGIH TLV.

7. Discuss whether you would recommend comparing the results of your sampling to the OSHA PEL or the ACGIH TLV. Include your rationale for the choice, and explain how you would rationalize your choice to your employer.

Begin your assignment on the next page. The completed assignment should be a minimum of three total pages in length (not including this instructions page). You should use at least the NIOSH document as a eference, and you may use other resources as needed. Adhere to APA Style when creating citations and references for this assignment. APA formatting, however, is not necessary.