Chapter 7

Pollutants and contaminants

7.1 Guidance

7.1.1 What are pollutants and contaminants?

Over the last 20 years environmental matters have become an area of widespread public concern particularly those concerning the issues of pollution and contaminants. Pollutants and contaminants come in many forms and can have an effect on the air, land or water courses and as pollutants move from one medium to another they may be deposited on equipment and equipment housing. They can cause extensive damage.

Pollution of the air can occur in both the troposphere and stratosphere. In the troposphere pollutants from chimneys (for example) are carried by the air and can be deposited over time and distance, thus having a limited life span before they ...

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