NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JUNE/JULY 2013 EXAMINATION

COURSE CODE: ESM 431

COURSE TITLE: ENVIRONMENTAL HEALTH & SAFETY         

TIME ALLOWED: 3HOURS

INSTRUCTION: Answer any five questions

 

        1. (a) What is meant by the term Environment? (4 marks)

(b) How does man affect his environment? (10 marks)

 

        1. (a) Discuss why there is a need for environmental sustainability  (4 marks)

(b) Discuss measures within your home or work place which will encourage environmental sustainability. (10 marks)

 

        1. (a) What incident necessitated environmental legislation in Nigeria and what was Government’s response? (4 marks)

(b) List 3 agencies involved in legislating on the environment in Nigeria and discuss their functions. (6 marks)

(c) There was a need to develop international environmental legislation. This has resulted in the signing of various treaties under the umbrella of the United Nations (UN). List any FOUR of the most common treaties (Conventions). (4 marks)

 

        1. (a) Explain the meaning of Occupational Health and Safety. (3 marks)

(b) What are the essential elements of an OH&S policy? (6 marks)

(c) As the Safety officer in a Publishing Company, prepare a draft copy of an OH&S policy for the company. (Note the company has a very active Union) (5 marks)

 

        1. (a) What is EIA (Environmental Impact Assessment)? (3½ marks)

          (b) Describe the processes of EIA (10½marks)

 

        1. (a) Define the following terms:

             (i) Hazard  (ii) probability  (iii) consequence (iv) risk  (v) risk assessment. (10 marks) 

         (b) Outline the seven stages of risk assessment (4 marks)

 

        1. (a) Fires are graded into five classes: A, B, C, D and E; describe the combustible materials involved in each class (5 marks)

          (b) List any four fire extinguishing techniques (4 marks)

          (c) List and describe briefly the portable fire extinguishers (5 marks).


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