EIM module electrical installation and maintenance3.pptx

grade 9

1. TLE 9 Electrical Installation And Maintenance Lesson 1.3: Inspect Tools and Equipment for Damage prior to its Use

2. OBJECTIVES • inspect tools and equipment for damage prior to its use; • know hazards in using power and hand tools; and • report damaged tools.

3. Tools are such a common part of our lives that it is difficult to remember that they may pose hazards. Tragically, a serious incident can occur before steps are taken to identify and avoid or eliminate tool-related hazards.

4. Checking and inspecting of hand and power tools before commencing work is crucial to determine defective or damaged equipment. Failing to check for damages can be onerous for both the business and its employees. Damaged equipment can also cause severe injuries such as cuts, punctures, blindness, electrical shock, or skin infection due to scrapes and abrasions. Equipment should help employees easily perform their tasks and not put them in danger.

5. Any person who use hand and power tools are exposed to the hazards of falling, flying, abrasive, and splashing objects, or to harmful dusts, fumes, mists, vapors, or gases must be provided with the appropriate personal protective equipment (PPE’s). All electrical connections for these tools must be suitable for the type of tool and the working conditions (wet, dusty, flammable vapors). When a temporary power source is used for construction a ground-fault circuit interrupter should be used.

6. Five basic safety rules can help prevent hazards associated with the use of hand and power tools Keep all tools in good condition with regular maintenance. Use the right tool for the job. 3. Examine each tool for damage before use and do not use damaged tools. 4. Operate tools according to the manufacturers’ instructions. 5. Provide and use properly the right personal protective equipment.

7. When and How should you Inspect P owered Hand Tools? • Inspect tools for any damage prior to each use. • Check the handle and body casing of the tool for cracks or other damage. • If the tool has auxiliary or double handles, check to see that they installed securely.

8. When and How should you Inspect P owered Hand Tools? • Inspect cords for defects: check the power cord for cracking, fraying, and other signs of wear or faults in the cord insulation. • Check for damaged switches and ones with faulty trigger locks. • Inspect the plug for cracks and for missing, loose or faulty prongs.

9. What should you do if you find a tool defective? • If a tool is defective, remove it from service, and tag it clearly "Out of service for repair". • Replace damaged equipment immediately – do not use defective tools "temporarily". • Have tools repaired by a qualified person – do not attempt field repairs.

10. What should you do before using power hand tools? Do not wear loose clothing or jewelry while using revolving power tools. Tie back long hair or wear appropriate hair protection to prevent hair from getting caught in moving parts of equipment. Do not use a tool unless you have been trained to use it safely and know its limitations and hazards.

11. What should you do before using power hand tools? Avoid accidental starting by ensuring the tool is turned off before you plug it in. Also do not walk around with a plugged-in tool with your finger touching the switch. Do not bypass the ON/OFF switch and operate the tools by connecting and disconnecting the power cord. Do not disconnect the power supply of the tool by pulling or jerking the cord from the outlet.

12. What should you do before using power hand tools? Do not leave a running tool unattended. Do not leave it until it has been turned off, has stopped running completely, and has been unplugged. Do not use electric tools in wet conditions or damp locations unless tool is connected to a ground fault circuit interrupter (GFCI). Do not expose electric power tools to rain or wet conditions; wet tools increase the likelihood of electric shock.

13. What should you do before using power hand tools? Avoid body contact with grounded surfaces like refrigerators, pipes and radiators when using electric power tools; this will reduce the likelihood of shock if the operator's body is grounded. Do not plug several power cords into one outlet by using single-to-multiple outlet adapters or converters ("cube taps"). Do not use light duty power cords.

14. What should you do before using power hand tools? Stop using an electric power tool if you feel a tingle in your fingers. This is a warning that the tool is faulty and needs repair. Do not connect or splice extension cords together to make a longer connection: the resulting extension cord may not be able to provide sufficient current or power safely. Do not carry electrical tools by the power cord.

15. What should you do before using power hand tools? Do not tie power cords in knots. Knots can cause short circuits and shocks. Loop the cords or use a twist lock plug. Never break off the third prong on a plug: replace broken 3-prong plugs and make sure the third prong is properly grounded.

16. What should you do before using power hand tools? Never use extension cords as permanent wiring: use extension cords only as a temporary power supply to an area that does not have a power outlet. Do not walk on or allow vehicles or other moving equipment to pass over unprotected power cords. Cords should be put in conduits or protected by placing planks on each side of them.

17. What should you do before using power hand tools? Do not brush away sawdust, shavings or turnings while the tool is running. Never use compressed air for cleaning surfaces or removing sawdust, metal turnings, etc. Do not operate tools in an area containing explosive vapors or gases.

18. What should you do before using power hand tools? Do not clean tools with flammable or toxic solvents. Do not surprise or touch anyone who is operating a tool. Startling a tool operator could end up causing an accident or injury. Have a qualified electrician install a polarized outlet if the polarized, two-prong plug of a double-insulated tool does not fit in a two- hole receptacle. Double insulated tools use plugs having one prong that is visibly wider than the other.

19. What should you do before using power hand tools? Use only the kind of battery that the tool manufacturer specifies for the battery- powered tool that you are using. Recharge a battery-powered tool only with a charger that is specifically intended for the battery in that tool.

20. What should you do before using power hand tools? Remove the battery from the tool or ensure that the tool is switched off or locked off before changing accessories, adjusting, or storing the tool. Store a battery pack safely so that no metal parts, nails, screws, wrenches and so on can come in contact with the battery terminals; this could result in shorting the battery and possibly cause sparks, fires or burns.

21. Methods on Identifying Non-Functional Power Tools and Equipment 1. Visual Inspection- refers to the visual observation of an expert on the appearance of the tools and equipment. 2. Functionality- based on vibration or extra noise from the operation means problems on parts and accessories started to develop. 3. Performance- when there is something wrong with the performance of either electric tools or equipment, they need an immediate repair.

22. Methods on Identifying Non-Functional Power Tools and Equipment 4. Power supply (for electric operated) - failure to meet the required power supply, malfunction will occur in the part of power tools and equipment. 5. Persons involved- refers to the technical person who has knowledge and skills about the technology.

23. Hand tools are tools that are power manually. Hand tools include anything from axes to wrenches. The greatest hazards posed by hand tools result from misuse and improper maintenance.

24. What Are the Hazards of Hand Tools? If a chisel is used as a screwdriver, the tip of the chisel may break and fly off, hitting the user If a wooden handle on a tool, such as a hammer or an axe, is loose, splintered, or cracked, the head of the tool may fly off and strike the user or other persons.

25. What Are the Hazards of Hand Tools? If the jaws of a wrench are sprung, the wrench might slip. If impact tools such as chisels, wedges, or drift pins have mushroomed heads, the heads might shatter on impact, sending sharp fragments flying toward the user or other employees.

26. What Are the Dangers of Power Tools? Appropriate personal protective equipment such as safety goggles and gloves must be worn to protect against hazards that may be encountered while using hand tools.

27. What Are the Dangers of Power Tools? Workplace floors shall be kept as clean and dry as possible to prevent accidental slips with or around dangerous hand tools.

28. What Are the Dangers of Power Tools? Power tools must be fitted with guards and safety switches; they are extremely hazardous when used improperly. The types of power tools are determined by their power source: electric, pneumatic, liquid fuel, hydraulic, and powder-actuated.

29. To prevent hazards associated with the use of power tools, workers should observe the following general precautions: Never carry a tool by the cord or hose. Never yank the cord or the hose to disconnect it from the receptacle. Keep cords and hoses away from heat, oil, and sharp edges.

30. To prevent hazards associated with the use of power tools, workers should observe the following general precautions: Disconnect tools when not using them, before servicing and cleaning them, and when changing accessories such as blades, bits, and cutters. Keep all people not involved with the work at a safe distance from the work area. Secure work with clamps or a vise, freeing both hands to operate the tool.

31. To prevent hazards associated with the use of power tools, workers should observe the following general precautions: Avoid accidental starting. Do not hold fingers on the switch button while carrying a plugged-in tool. Maintain tools with care; keep them sharp and clean for best performance. Follow instructions in the user's manual for lubricating and changing accessories.

32. To prevent hazards associated with the use of power tools, workers should observe the following general precautions: Be sure to keep good footing and maintain good balance when operating power tools. Wear proper apparel for the task. Loose clothing, ties, or jewelry can become caught in moving parts. Remove all damaged portable electric tools from use and tag them: "Do Not Use."

33. HOW TO Report Damaged Tools

34. Things to remember in Equipment Selection and Monitoring 1. The physical characteristic of the equipment shall be measured by the changes in the condition of equipment over a period. 2. Vibration and temperature are the best indicators of rotating equipment condition. 3. A visual and hands-on inspection of the equipment on a periodic basis is be conducted to look for obvious equipment problem symptoms..

35. Things to remember in Equipment Selection and Monitoring 4. A periodic or continuous monitoring combined with visual inspections and time-based replacement is scheduled and planned per equipment. 5. Commence monitoring/inspection in a priority order. 6. Prioritize equipment with known problems which has history of problems.

36. Roles and Responsibilities The Management is responsible for: • Providing a safe and healthy workplace including the necessary equipment, power tools, and the system. • Providing training, instruction, information, supervision and protect workers from damage equipment, rotating tools and the system. • Establishing regular safety inspection of the workplace.

37. Roles and Responsibilities The Supervisors are responsible for: • Knowing and complying with health and safety requirements • Ensuring workers under their direction and knowing and complying with health and safety requirements. • Ensuring workers following instruction, using conditioned equipment and receiving adequate supervision.

38. Roles and Responsibilities The Workers are responsible for: • Following safe work practice and procedures using safeguards and personal protective equipment. • Reporting hazard (such as damaged power tools and damaged equipment) to the supervisor. • Cooperate with the management, supervisor and the committee on regular action for inspection.

39. “Prevention is better than cure”. Always inspect tools and equipment before using it to avoid untoward accidents. Always use Personal Protective Equipment (PPE’s) when working. Remember the five basic safety rules in inspecting tools and equipment to prevent hazards associated with the use of hand and power tools. REMEMBER

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