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Safety. Unit objectives Identify safety issues and hazards in the computer environment Identify ways to avoid injury and strain when working with computers Identify proper methods for disposing of computer equipment. Topic A. Topic A: Safety and hazards Topic B: Safe work practices
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Safety Unit objectives • Identify safety issues and hazards in the computer environment • Identify ways to avoid injury and strain when working with computers • Identify proper methods for disposing of computer equipment
Topic A • Topic A: Safety and hazards • Topic B: Safe work practices • Topic C: Disposing computer equipment
Floor surfaces • Keep floors level and dry • Secure carpets to the floor • Don’t cross walkways with cables and power cords • Use static protection • Antistatic floor mats • Static mats under the user's keyboard and/or computer
Fire safety • Keep papers orderly • Keep combustibles away from appliances • Use working smoke detectors in all areas • Have appropriate fire extinguishers on hand
Fire extinguisher types • Class A: Ordinary compustibles • Class B: Flammable liquids • Class C: Electrical equipment • Class D: Flammable metals
Fire extinguisher substances • Dry chemical • Halon • Water • CO2
Electrical safety • Avoid overloading electrical circuits • Label breakers • Use surge protectors and Universal Power Supplies • Avoid stringing together power strips • Avoid running electrical cords or network cables across walkways • Encase cables across walkways in a cord protector • Provide good ventilation for computer equipment • Secure cords, lines, cables out of the way
Air quality • Use fans to keep the air clear • Avoid smoking around computers • Place working carbon monoxide detectors throughout the building
Computer hazards • Physical hazards • Laser and copier toner • Electromagnetic hazards
Incident reporting • Establish policies • Necessary for • OSHA • Workers compensation claims • Insurance
Activity A-1 Identifying typical office and computer-related hazards
High-voltage interference • Outside interference • Inside interference
Electrostatic Discharge (ESD) • Occurs whenever static charge on two objects is dissimilar • If the two objects touch, electricity from higher voltage charge flows to lower voltage charge until charges are equalized • Can attain very high voltages • If you touch metal object and feel electric discharge, voltage difference was 3,000 volts or more • If spark visible when discharge occurred, voltage difference was at least 8,000 volts
Electromagnetic induction • From fluorescent lights • Electromagnetic field can induce a similar current in other nearby objects • Network cables • Electronic equipment • Induction currents in network wiring can destroy data and can damage equipment
Minimizing high-voltage interference • Maintenance • Install ground wires • Use anti static devices
Shielding and filtering • Shielding applies primarily to a network’s cables and is actually a refined form of grounding • Filters are electronic devices designed to permit the normal function of a device, but they block or suppress any other signal coming from it
Activity A-2 Finding sources of static electricity and interference
MSDS • Physical data • Toxicity • Health effects • First aid • Reactivity • Storage • Disposal • Protective equipment • Spill/leakage procedures
Activity A-3 Reading a material safety data sheet
Topic B • Topic A: Safety and hazards • Topic B: Safe work practices • Topic C: Disposing of computer equipment
Ergonomic workstations Check position of: • Chair • Monitor • Keyboard • Mouse • Document holders • Office equipment • Phones • Other equipment
Laptop safety • Weight • Ergonomic issues • Heat
Activity B-1 Avoiding injury and strain when working with PCs
Topic C • Topic A: Safety and hazards • Topic B: Safe work practices • Topic C: Disposing of computer equipment
Computer equipment disposal • Disposal of electronics • Hazardous materials • Disposing of used toner and ink cartridges • Disposal of computer equipment • Reusing equipment • Methods of disposal
Activity C-1 Selecting the proper methods for computer equipment disposal
Unit summary • Identified safety issues and hazards in the computer environment • Identified ways to avoid injury and strain when working with computers • Identified proper methods for disposing of computer equipment