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November-December 2015 Final Examinations (HSEV 1012)

FINAL ASSESSMENT/EXAMINATION NOVEMBER-DECEMBER 2015

Course Code and Title: HSEV1012

Programme: NETD - Mechanical Engineering

Date and Time: November 2015 Duration: 3.0 hours

PLEASE READ ALL INSTRUCTIONS CAREFULLY BEFORE YOU BEGIN THIS

EXAMINATION

Instructions to Candidates

1. This paper has 2 Sections and 12 pages.

2. You are required to answer (ALL) questions.

3. A MULTIPLE CHOICE ANSWER SHEET WILL BE PROVIDED.

4. This is a closed book examination. Notes, books or any other written materials are not

allowed.

5. Write your student ID number in the space provided.

6. You must return the question paper along with your answer booklet and other writing paper

to the Invigilator at the end of the examination.

Key Examination Protocol

1. Students please note that academic dishonesty (or cheating) includes but is not limited to

plagiarism, collusion, falsification, replication, taking unauthorised notes or devices into an

examination, obtaining an unauthorised copy of the examination paper, communicating or

trying to communicate with another candidate during the examination, and being a party to

impersonation in relation to an examination.

2. The above mentioned and any other actions which compromise the integrity of the academic

evaluation process will be fully investigated and addressed in accordance with UTT’s

academic regulations.

3. Please be reminded that speaking without the Invigilator’s permission is NOT allowed.




SECTION A

Answer the questions in this section on the answer sheet provided.

1. The pic illustrates what type of hazard?

a) Pinch Point

b) Nip Point

c) Caught between

d) Contact with

2. The pic best illustrates what type of hazard?

a) Slip

b) Trip

c) Fall from a height

d) Fall from a ladder




3. Which of the following is true about dilution ventilation?

a) It cannot be used for highly toxic contaminants

b) It completely removes all contaminants

c) It is effective for handling surges and irregular emissions

d) It is effective for large amounts of dusts, fumes, gases or vapours

4. Risk = Severity x Probability. In a 3x3 matrix, a value of 4 may be considered:

a) A high risk

b) A low risk

c) A medium risk

d) An acceptable risk

5. Which of the following is not a major guideline used in a PPE Programme?

a) Match PPE to hazard

b) Checking the fit

c) Emergency response training

d) Auditing the Programme

6. Isolation of noisy equipment is an example of what type of hazard control?

a) Engineering

b) Administrative

c) Worker

d) PPE

7. Personal Protective Equipment (PPE).

a) Is an Engineering Control.

b) Should be used for primary protection against hazards.

c) Eliminates the hazard.

d) None of the above.




8. From the hazards listed below, select a potential chemical workplace hazard:

a) Occupational Overuse Syndrome (OOS)

b) Bacteria

c) Paint

d) Stress

9. The best information (most complete and accurate) relative to a material and its properties is

found in which of the following:

a) MSDS

b) Placards

c) Labels

d) Shipping papers

10. Which of the following inappropriately describes chemical hazards?

a) Corrosive

b) Explosive

c) Pathogen

d) Radioactivity

11. Which of the following is an example of a confined space?

a) A water tank

b) A control room

c) The driver cubicle of a tractor

d) A laboratory

12. What are the main hazards to be considered for working in a confined space?

a) Mechanical and high temperatures

b) Toxic gas and oxygen-depletion

c) High voltage and chemicals

d) Vibration and noise




13. When writing a safe job procedure; ensure you:

a) Write for clarity and understanding

b) Write as abstract as possible

c) Write in good technical jargon

d) Do not include the obvious

14. Which of the following is not a major guideline used in a PPE Programme?

a) Match PPE to hazard

b) Checking the fit

c) Emergency response training

d) Auditing the Programme

15. Which of the following is true about lock out tag out procedure?

a) Inform workers; turn off switch; isolate from power; lock and tag; bleed residual

energy; test equipment

b) Inform workers; lock and tag; bleed residual energy; test equipment; turn off switch;

isolate from power

c) Bleed residual energy; isolate from power; inform workers; turn off switch; lock and

tag; test equipment

d) Inform workers; test equipment; isolate from power; lock and tag; bleed residual

energy; turn off switch

16. If you need to use a ladder while working near electrical parts:

a) Use a conductive ladder.

b) Use a metal ladder.

c) Use a non-conductive ladder.

d) The ladder must be intentionally grounded.

17. Which of the following is not a good idea when conducting a JHA?

a) Prioritize jobs to be analyzed

b) Review accident history

c) Arrange for no-notice observations

d) Conduct preliminary job review




18. Which of the following examples of safety hazards are in permit required confined spaces?

a) Falls

b) Machinery that has not been locked out and tagged

c) Engulfing materials such as saw dust.

d) All of the above

19. Isolation of a permit required confined space is:

a) Locking out and tagging all supply lines and sources of energy.

b) Blocking off the permit required confined space to all entrants not authorized.

c) Both A and B.

d) None of the above.

20. Which of the following duties is the entry supervisor responsible for?

a) Authorizing entry.

b) Determining if conditions are acceptable for an entry

c) Terminating the entry if necessary

d) All of the above

21. Which of the following pieces of legislation is still NOT passed?

a) Water Pollution Rules, 2001

b) Environmentally Sensitive Species, 2001

c) Noise Pollution Rules, 2001

d) Air Pollution Rules, 2013

22. Ozone depletion is attributed to the use and disposal of chemicals containing:

a) Carbon and Oxygen

b) Chlorine and Bromine

c) Nitrogen and Hydrogen

d) Sulphur and Methane

23. The two main gases responsible for the greenhouse effect are:

a) Carbon dioxide (CO2) and water vapour (H2O)

b) Oxygen (O2) and water vapour (H2O)

c) Methane (CH4) and water vapour (H2O)

d) Nitrous oxide (N2O) and Carbon dioxide (CO2)




24. Which of the following gases produces acid rain?

a) Carbon monoxide

b) Ozone

c) Chlorofluorocarbon

d) Nitrogen Dioxide

25. Air pollution encompasses introduction into atmosphere of substances that harm living

organisms or humans. The substances may include:

a) chemicals

b) particulates

c) biological materials

d) any of the above

26. The complex, dynamic natural gaseous system that is essential to support life on planet earth

is called…

a) annihilator

b) mixture

c) gas

d) atmosphere

27. Which of the following elements is common to both an effective occupational safety and

health program and a waste management program?

a) Waste Treatment

b) Emergency Response Plan

c) Hazard prevention and control

d) Compensation costs

28. Municipal solid waste include all of the following, except

a) Grass clippings

b) Food

c) Spent radioactive material

d) Old furniture




29. Which of the following is NOT a characteristic of hazardous waste?

a) Corrosivity.

b) Flammability.

c) Biodegradability.

d) Toxicity.

30) Which one of the following legislative requirements is intended to deal with hazardous

waste?

a) Noise Pollution Rules (2001)

b) Certificate of Environmental Clearance (2001)

c) Draft Air Pollution Rules (2013)

d) Draft Waste Management Rules (2008)

END OF SECTION A

GO TO THE NEXT SECTION




SECTION B

70 MARKS

ANSWER ALL QUESTIONS

Question 31 (10 marks)

Briefly outline Five (5) ways which employees can be motivated in HSE at workplaces.


(a) In the Pic below: (5 marks)

Identify Five (5) possible control measures to prevent hand injuries for someone working with

Hand Tools not including PPE .




(b) What does the acronym BLEVE stand for? (1 mark)

(c) Outline Four (4) control measures to prevent this phenomenon (BLEVE) from occurring.

(4 marks)


Complete the table below:

a) State three (3) Advantages/Disadvantages for Dilution Ventilation and

b) State two (2) ) Advantages/Disadvantages for Local Exhaust Ventilation


An assessment has concluded that the person carrying out a particular manual handling task is fit

and capable of lifting the loads involved. Outline the factors associated with the task and work

environment that would need to be considered in order to complete the assessment.

Dilution Ventilation Local Exhaust Ventilation

Advantages Disadvantages Advantages Disadvantages

1

1

2

2

3





(a) Explain using a suitable sketch, the significance of the ‘fire triangle’. (2 marks)

(b) Identify FOUR different types of ignition source that may cause a fire to occur, and give a

typical workplace example of EACH type. (4 marks)

(c) For each type of ignition source identified in (b), outline the precautions that could be taken

to prevent a fire starting. (4 marks)


The following is a JSA form for the task of repairing a gasket leak on a flange of the exhaust

piping on a steam turbine. The flange is located at an elevation of 18feet above the turbine floor.

Complete the form identifying at least five steps.

Task:

Repairing Gasket Leak on Turbine Exhaust Piping Flange 18ft

above Turbine Floor.

Job date:

Job location: This JSA has been reviewed by:

This JSA has been discussed with:

Work activity Hazard Risk control

Break the job down into

steps What could harm someone? What can be done to make the job safe?





Water pollutants may be categorized as point and non-point sources and comprises different

types.

(a) List a specific example and source from which it originates, for each of the pollutants listed

below: (8 marks)

i. Infectious agent

Infectious Agents such as microorganisms and bacteria are especially significant pollutants of water because they cause diseases. Main source of waterborne pathogens is improperly treated human waste. Animal wastes from feedlots and fields is also important source of pathogens

ii. Oxygen demanding wastes

Certain organic materials added to water stimulates oxygen consumption by decomposers

Sewage

Paper pulp

Food-processing wastes

iii. Organic chemicals

Two most important sources of toxic organic chemicals in water are:

Improper disposal of industrial and household wastes

Runoff of pesticides from high-use areas, Fields, roadsides, golf courses

iv. Inorganic chemical

Nonmetallic salts

Many salts that are non-toxic at low concentrations can be mobilized by irrigation and concentrated by evaporation, reaching levels toxic to plants and animals




Leaching of road salts has had detrimental effect on many ecosystems

Acids and bases

Often released as by-products of industrial processes

Coal mining

Acid precipitation

(b)Describe one impact caused by a surplus of persistent highly toxic inorganic chemical in

water systems. (2 marks)

Any appropriate inorganic chemical impact.

END OF EXAMINATION

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