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OHS612S - OCCUPATIONAL HEALTH AND SAFETY 2B - 2ND OPP - JAN 2023 |
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NAMIBIA UNIVERSITY OF SCIENCE AND TECHNOLOGY
FACULTY OF HEALTH, APPLIED SCIENCES and NATURAL RESOURCES
DEPARTMENT OF HEALTH SCIENCES
QUALIFICATION: BACHELOR OF ENVIRONMENTAL HEALTH SCIENCES
QUALIFICATION CODE: 08 BOHS
LEVEL: 6
COURSE NAME: OCCUPATIONAL HEALTH AND SAFETY 2B
DATE: JANUARY 2023
COURSE CODE: OHS612S
SESSION: 2ND Opportunity
DURATION: 3 HOURS
MARKS: 100
SUPPLEMENTARY/SECOND OPPORTUNITY EXAMINATION QUESTION PAPER
EXAMINER
MRS MOUYELELE HAUFIKU
MODERATOR: MR IMMANUEL ZERIAPI
INSTRUCTIONS
1. Read all the questions carefully before answering
2. Answer all the questions
3. Marks for each question are indicated at the end of each question
4. Number the answers clearly.
5. Please ensure that your writing is legible, neat and presentable
PERMISSIBLE MATERIAL: NONE
THIS QUESTION PAPER CONSISTS OF 3 PAGES
(Including this front page)
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SECTION A [20 MARKS]
QUESTION 1
[10]
1.0 Define the following terms/concepts in the context of Occupational Health and Safety.
1.1 Hazard elimination
[1]
1.2 Broncho constriction
[1]
1.3 Hepatic necrosis
[1]
1.4 Nephrotoxins
[1]
1.5 Biohazard
[1]
1.6 Anthropozooonois
[1]
1.7 Virulence
[1]
1.8 Psychosocial hazard
[1]
1.9 Ergonomics
[1]
1.10 Anthropometry
[1]
QUESTION 2
[10]
2.0 Match the concepts in Column A to their most definition in Column B. Write on your
answer sheet the concept number and the letter representing the correct definition.
1 markeach
No COLUMN A
COLUMN B
2.1 Probability
A Particles in the lungs cause destruction and inflammation of the bronchi.
2.2 Direct transmission
B Where the susceptible person is infected by contact with a contaminated
surface, food-borne, droplet/airborne transmission or by vectors.
2.3 Chronic bronchitis
C as an unplanned and uncontrolled event caused by an unsafe act or unsafe
condition which may or may not result in injury, damage or death.
2.4 Teratogens
D Is the likelihood of occurrence of a particular event.
2.5 Indirect transmission E Causeschanges in the genetic material of the body by altering the genes
and therefore the chromosomes of the body.
2.6 Mutagen
F A threshold of a substance which may never be exceeded under any
circumstances.
2.7 Accident
G Rapture of the inter alveolar cell membranes
2.8 Ceiling concentration H Requires physical contact between an infected person and a susceptible
person
2.9 Severity
I Causesabnormalities in the unborn baby
2.10 Emphysema
J Is the magnitude of the consequences that may arise for the occurrence of
the event.
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SECTION B [20 MARKS]
QUESTION 3
3.1 Differentiate between the following terms.
3.1.1 Unsafe practice and unsafe condition with examples.
3.1.2 Pneumoconiosis and Pneumonia.
3.1.3 Local effect and systematic effect.
3.1.4 Reversible and Irreversible.
3.2 Discus the following control measures for mercury:
3.2.1 Engineering control.
3.2.2 Work practices control.
[20]
[10]
[4]
[2]
[2]
[2]
[5]
[5]
SECTION C [60 MARKS]
QUESTION 4
[20]
4.1 Elaborate how accidents can be prevented in the workplace using the four E's principle.
[16]
4.2 Mention the risk factors for ergonomic injuries.
[4]
QUESTION 5
5.1 Name with examples the main types of biological materials that workers are potentially
exposed to.
5.2 Discuss the Hierarchy of control that can be applied to Biohazards.
[25]
[10]
[15]
QUESTION 6
6.1 Briefly explain why anthropometry is important.
6.2 Explain ventilation by definition and seven (7) objectives.
[15]
[6]
[9]
TOTAL MARKS = 100
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