physical hazard and impact on our health

Anything that has the potential to cause harm, ill health
and injury, damage to property, products or the
environment, production losses or increase liabilities.

1. Course Title: Physical Hazards – that’s impact on our human health Shibli sadik BSc.TE (ME) TVE Department Islamic University of Technology (IUT ) , OIC. 160032101

2. Physical hazards Hazard is defined as: Anything that has the potential to cause harm, ill health and injury, damage to property, products or the environment, production losses or increase liabilities. 160032101

3. Example of Hazards A. Physical Hazards B. Chemical Hazards C. Biological Hazards D. Mechanical Hazards E. Psychosocial Hazards 160032101

4. CHEMICAL & DUST HAZARDS (cleaning products, pesticides, asbestos, etc.) BIOLOGICAL HAZARDS (mold, insects/pests, communicable diseases, etc.) ERGONOMIC HAZARDS (repetition, lifting, awkward postures, etc.) WORK ORGANIZATION HAZARDS Things that cause STRESS! SAFETY HAZARDS (slips, trips and falls, faulty equipment, etc.) PHYSICAL HAZARDS (noise, temperature extremes, radiation, etc.) 160032101

5. Physical Hazards – that’s impact on our human health Heat and cold Light Noise Vibration Ultraviolet radiation Ionizing radiation 160032101

6. DISEASES DUE TO PHYSICAL AGENTS A) HEAT AND COLD HEAT Direct effects:- Burns Heat exhaustion Heat stroke and Heat cramps Indirect effects are:- Decreased efficiency Increased fatigue Enhanced accidents rates COLD Effects associated with cold works are:- Chilblains Erythrocyanosis Frostbite General hypothermia 160032101

7. Harmful effects of- “ extreme temperatures” Very hot and very cold environments can be dangerous to your health 160032101

8. B) LIGHT POOR ILLUMINATION Acute effects:- Eye strain Headache Eye pain Lacrimation Congestion around cornea Eye fatigue Chronic effects:- Miner’s nystagmus EXCESSIVE BRIGHTNESS Effects due to glare :- Discomfort , annoyance and visual fatigue Blurring of vision

9. C) NOISE Auditory effects It includes:- Temporary hearing loss (Inability to hear telephone, Hears his own voice less clearly and he speaks with a loud voice to hear his own words ) Permanent hearing loss Non-auditory effects It includes:- Nervousness Fatigue Interference in communication by speech Decreased efficiency and annoyance 160032101

10. Harmful effects of noise Physiological (Non-auditory) Effects : Pain in the ears Increase secretion of adrenaline, nor-adrenaline and cortisone, this may be the cause of increased incidence of duodenal ulcer in animals. Chest feeling associated with nausea, vomiting. Rise of both intracranial and diastolic blood pressures. Interference with sleep Giddiness, nausea and fatigue Visual disturbance; narrowing of pupils – affection of colour perception – reduction of night vision Permanent Hearing Loss 160032101

11. D) VIBRATION It is encounter in work with drills and hammers Continuous work with such machines affects hands and arms. The blood vessels of fingers may become increasingly sensitive to spasm. It may also produce injuries of the joints of the hands, elbow shoulder. 160032101

12. E) ULTRAVIOLET RADIATION Mainly occurs in arc and other electric welding process Effects due to ultraviolet radiation are:- It mainly effects the eye causing:- a) Intense conjunctivitis b) Keratitis 160032101

13. F ) IONIZING RADIATION Effects due to ionizing radiation are :- a) Cancer b) Leukemia c) Ulceration d) Genetic changes Chromosomal mutation eg sterility Malformation And ultimately death 160032101