QUESTION 1

a) The Radiation Protection Act 2003 makes provisions for the protection of people against the risks from ionising radiations. What are the health effects associated with exposure to sources of non-ionising radiation widely used in everyday life. Your answer should include three examples of such type of radiation and the precautions to be observed

b) Name two analytical methods commonly used in Industrial Hygiene. Illustrate your answer with two typical examples

c) Name five components of a typical local exhaust ventilation system and their respective functions

d) The standard service illuminance for specific work activities is given in lux. What units are used in calculating lux and which instrument is used to appraise the lighting level in a workplace?

e) What are the units commonly used in occupational exposure limits for quantifying the concentration of dust particles, vapours or gases and fibres?

QUESTION 2

a) Why is it important to maintain good standards of Indoor Air Quality in modern offices. Briefly elaborate on the potential air pollutants encountered in such working environments

b) What are the health problems associated with the use of cooling towers in airconditioning systems in buildings? Outline the control measures that could be implemented to minimise such risks

QUESTION 3

a) Dermatitis is one of the main causes of disablement from occupational diseases. Name five substances commonly used at work which may cause skin diseases

b) What are the jobs and workplaces where workers are at greater risk of developing dermatitis?

c) Outline the control measures that should be considered to prevent
Occupational Dermatitis

QUESTION 4

You are the registered Safety & Health Officer of a textile milling factory. The Occupational Safety & Health Inspectorate have told your management that the workforce has a probable overexposure to noise. The feedbacks of management is to ask you to issue ear protective devices to employees.

How would you calculate the noise problem at the factory and what control measures would you consider before you recommend the supply of hearing protection to personnel exposed to high intensity noise?

QUESTION 5

Elaborate on the hierarchy of control measures used in Industrial Hygiene