Workplace Safety Unit 2. Hazard Any substance, or physical property of equipment, process, or task design that poses a potential threat to the health.

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Presentation transcript:

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 1.Chemical 2.Physical 3.Biological 4.Ergonomic

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.

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.

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.

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.

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

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

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