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Workplace Safety . Unit 2. Hazard . Any substance, or physical property of equipment, process, or task design that poses a potential threat to the health and/or safety of the individual, or causes significant discomfort and inefficiency among workers. . Hazard Categories . Chemical

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Workplace Safety


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    1. Workplace Safety Unit 2

    2. Hazard • Any substance, or physical property of equipment, process, or task design that poses a potential threat to the health and/or safety of the individual, or causes significant discomfort and inefficiency among workers.

    3. Hazard Categories • Chemical • Physical • Biological • Ergonomic

    4. Chemical Hazards • Dust/Fibers • Solid particles of materials such as silica, coal, cotton, asbestos. • Furstes • Particles formed when material from a volatilized solid condenses in cool air, such as nickel, beryllium, zinc, iron.

    5. Chemical Hazards • Smokes • Solid/liquid particles resulting from incomplete combustion of materials such as wood, coal, plants, petroleum products. • Mists/Aerosols • Liquid particles suspended in air, such as chromic acid, hydrochloric acid, sulphuric acid.

    6. Chemical Hazards • Gases • Formless fluids that expand to occupy the space or enclosure to which they are confined such as: hydrogen-sulphide, chlorine, carbon monoxide. • Vapors • The gaseous form of normally solid or liquid substances subject to evaporation, such as: gasoline, alcohol, paint, thinners, solvents.

    7. Physical Hazards • Noise • Unwanted or excessive sound • Temperature • High or low extremes • Illumination • Lighting level, intensity and glare • Vibration • To and fro motion or oscillation; transmitted to the body as “whole body” vibration or “segmental” vibration.

    8. Physical Hazards • Pressure • Inadequate or excessive atmospheric force for the body. • Radiation • The process in which energy in the form of rays is sent through space from atoms and molecules as they undergo internal change. • Ionizing radiation • Evolves from the nucleus of an atom: non-ionizing from varying electric and magnetic fields, such as: ultraviolet, laser, infrared, microwave, radio frequency

    9. Biological Hazards • Bacteria • Viruses • Fungi-Molds • Mites • Insects • Parasites • Plants • Animals

    10. Ergonomic Hazards • Repetitive motion • Heavy lifting • Awkward or static posture • Fatigue • Overexertion • Monotony • Perceptual confusion or overload • Varying metabolic cycles • Direct pressure • Excessive force