a) Why is it significant to maintain good standards of Indoor Air Quality in modern offices? In brief elaborate on the potential air pollutants encountered in such working environments.
b) What is the health problems associated with the use of cooling towers in airconditioning systems in buildings? Outline and discuss the control measures which could be executed to minimise such risks.
What are the heat-induced disorders which might result from excessive exposure to a hot working environment? How can we alleviate such health problems?
Describe and discuss the basic procedures that an Industrial Hygienist should follow to ensure valid dust sampling in a workplace. What additional component should be connected to the sampling pump to collect respirable dust?
a) Workplace Exposure Limits (WEL) are used by Industrial Hygienists as guidelines to safeguard employees from hazardous substances at work. Describe and discuss briefly the dissimilar kinds of such hygiene standards.
b) Outline the limitations of these workplace exposure limits and demonstrate how they might be used as part of an entire control strategy for hazardous substances.