Response to EACH question must be a minimum of 200 words:
1. Define exposure assessment, and describe the seven steps involved in an exposure-assessment strategy. Apply each step to a scenario where you, as an industrial hygienist, are asked to describe a worker's exposure to cadmium during a brazing operation.
2. What are the elements of the risk-assessment paradigm? How can these elements be applied in a workplace setting in which an emergency responder is addressing a large spill of trichloroethylene? Describe how risk assessment can be used in industrial hygiene practice.
3. Define instantaneous monitoring, integrated monitoring, personal monitoring, and area monitoring, and explain the differences among each one. Provide a scenario in which in each method would be used.
4. In your own words, define risk. Identify the four risk functions and describe how these functions are used to make risk decisions. List the factors that influence the perceived acceptability of a risk. How can an industrial hygienist use these factors to determine how much risk is acceptable?
5. Discuss the various types of radiation that a safety professional might encounter and some methods for protecting oneself against it.
6. Discuss the effects that extreme temperatures can have on the human body. How can an individual protect himself/herself from these effects?
7. Please solve the following problem.
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?
8. 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?
Reference: Haight, J. M. (Ed.). (2012). Recognition, evaluation, and control of workplace health hazards. Des Plaines, IL: American Society of Safety Engineers.