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Occupational Hygine

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Submitted By abbaskahn
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M.Sc. Program
DISTANCE LEARNING ASSIGNMENT
Introduction to Occupational Health

Q1.( A) Define Health Hazards. Explain the processes that can be hazardous for the health of workers with examples.
ANS. Health hazard is the state of events which has the potential to threaten and / or adversely affect health of the exposed employees. Or
A danger to health resulting from exposure to environmental pollutants, such as asbestos or ionizing radiation, or to a life-style choice, such as cigarette smoking or chemical abuse.
Health hazards may be classified as below 1. Chemical 2. Physical 3. Mechanical 4. Biological 5. Psychosocial
Above mentioned hazards as well as all other health hazards are disastrous due to their adverse effects on exposed people like
 Bodily injury,
 Disease,
 Change in the way the body functions, grows, or develops,
 Effects on a developing fetus (teratogenic effects, fetotoxic effects),
 Effects on children, grandchildren, etc. (inheritable genetic effects)
 Decrease in life span,
 Change in mental condition resulting from stress, traumatic experiences, exposure to solvents.
 Effects on the ability to accommodate additional stress

Following are some processes that can be hazardous for the health of workers

1. Abrasive blasting; abrasive blasting operations can create high levels of dust and noise. Abrasive material and the surface being blasted may contain toxic materials (e.g., lead paint, silica) that are hazardous to workers.
Silica sand (crystalline) can cause silicosis, lung cancer, and breathing problems in exposed workers.
Coal slag and garnet sand may cause lung damage similar to silica sand (based on preliminary animal testing).
Copper slag, nickel slag, and glass (crushed or beads) also have the potential to cause lung damage.
Steel grit and shot have less potential to cause lung

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