1. Perform the exercise below using Strategy 2: moderate the hazard.

An older industrial building has a fire extinguishing system equipped with Halon extinguishing agent. The company is trying to brand itself as an environment-friendly company. Halon is recognized as being detrimental to the earths ozone layer, but the facility needs a fire protection system. As an industrial hygienist, what solution do you suggest? What new risks can you anticipate based on your suggestion

2. Consider two objects of equal mass moving in a straight line. Object A has a velocity of 4 m/s. Object B has half the kinetic energy of object A. What is the velocity of object B?

3. A spring with k = 800 N/m is compressed by 0.05 m. What is the potential energy of the compressed spring?

4. Describe one risk related to diving down to 40 feet and another related to returning to the surface.

5. Give an example of Risk Reduction Strategy 7 applied to electrical energy.

6. Say an employee comes back from an audiometric test with results showing poor hearing at 4000 Hz. This was the only frequency showing a loss. The employee has been with the company for six years, always in the same job. What would be the basic steps for the OSH staff to take?

7. One tactic for reducing noise exposure is to set up a barrier between the source and the personnel. What characteristics of an effective barrier are required?

8. A topic of some controversy for heat stress work concerns whether to recommend that workers in these jobs increase their dietary salt intake. Answer the following questions.

8.1 What do you think is the rationale for encouraging increased salt intake?

8.2 What do you think is the rationale for not encouraging increased salt intake?

9. Explain what are pattern 1 and pattern 2 falls are, and give one main hazard from each pattern.

10. Explain the steps that lead to a boiling-liquid expanding-vapor explosion (BLEVE)