The document discusses refrigeration and air conditioning systems. It covers various topics like atmosphere, environment, safety, electricity, tools used, and types of refrigeration and air conditioning. It provides information on general safety practices like following written EHS policies, 5S methodology for workplace organization, and types of fire extinguishers. It also describes electrical safety practices including circuit protection devices, personal protective equipment and relay operations.
This document provides guidance on electrical safety. It defines electrical hazards such as shock, arc, and blast. It outlines responsibilities and safe work practices for working on energized circuits, including having another person present for emergency reporting. Affected employees are trained to recognize electrical hazards and use proper safety techniques. The document discusses factors that influence injuries from electric arcs such as distance, absorption, temperature, and time. It provides tips for avoiding shock such as using GFCIs, inspecting equipment, and not handling electrical devices with wet hands.
This document discusses electrical product safety in the United States. It outlines the hazards posed by electrical products, including fires, electric shock, and burns. To address these risks, the U.S. Consumer Product Safety Commission uses a multi-pronged approach including supporting safety standards, enforcing regulations, identifying defective products, and educating consumers. Manufacturers and importers are responsible for ensuring their electrical products comply with voluntary consensus standards to prevent potential hazards and the need for recalls. The document provides several case studies to illustrate how the CPSC addresses emerging hazards and participates in the standards process.
This chapter discusses safety practices for hand and portable power tools. It notes that misuse of these tools can cause serious injuries and that they account for 6-8% of disabling injuries each year. The chapter covers proper tool selection, safety practices like using personal protective equipment and selecting the right tool for the job. It also discusses inspection and maintenance of tools, as well as safe operation of common hand tools like screwdrivers and hammers, and power tools like electric drills. The goal is to help prevent accidents and injuries caused by improper use of hand and portable power tools.
An arc flash is an electrical explosion that results from a short circuit or arc through the air. It produces severe burns, hearing loss, equipment damage, and puncture wounds. Arc flashes are caused by dropped tools, improper work procedures, insulation failures, and inattentiveness. Workers are at higher risk when exposed to energized parts often, required to perform multiple tasks, poorly trained, or have broken concentration. To prevent arc flashes, only qualified persons should work on or near energized equipment. Safe work practices include reviewing operations, determining hazards, implementing protective measures, wearing appropriate PPE, and knowing emergency response procedures.
Practical Electrical Substation Safety for Engineers and TechniciansLiving Online
Electrical substation safety is an important issue in utility networks as well as large industrial installations and requires adequate attention in the stages of system planning, design, installation, operation and maintenance. A number of serious accidents including fatalities occur every year in industrial establishments due to accidents involving electricity, resulting in huge financial losses and wasted man-hours. Electrical safety is a well-legislated subject and the various Acts and Regulations lay a lot of stress on the responsibility of both employers and employees in ensuring safe working conditions.
In this workshop, we will take a look at the theoretical aspects of safety as well as the practical and statutory issues. Safety is not simply a matter of taking precautions in the workplace. It has to start at the stage of equipment design. Safety should be built into the design of electrical equipment and it is the responsibility of every manufacturer of electrical equipment to remove every possible hazard that can arise from its normal use. Correct selection and application of electrical machinery is also important for ensuring safety. A thorough inspection during initial erection and commissioning as well as on a periodic basis thereafter is also very essential to ensure safety. Batteries used in substations need particular attention since they contain toxic materials such as lead, corrosive chemicals such as acid or alkali.
Electrical safety is not just a technical issue. Accidents can only be prevented if appropriate safety procedures are evolved and enforced. This includes appropriate knowledge of equipment and systems imparted through systematic training to each and every person who operates or maintains the equipment. We will cover all these aspects in detail.
MORE INFORMATION: http://www.idc-online.com/content/practical-electrical-substation-safety-engineers-and-technicians-28
This document outlines safety procedures and guidelines for working with electrical equipment and exposed electrical parts. Key points include:
- Electrical parts must be de-energized and locked/tagged out before working on them. A qualified person must perform lockout/tagout.
- Minimum clearance distances must be maintained when working near overhead power lines, with greater distances required for higher voltages.
- Nonconductive ladders and protective equipment or clothing must be used when exposed to energized parts to avoid arcing and shocks.
- Portable electrical equipment like power tools must be inspected for defects before each use and used properly by handling cords carefully and not modifying grounding systems. Circuits should not be manually
This document provides guidance on electrical safety. It outlines hazards of electricity and requires special training for work on electrical equipment. Only authorized employees may conduct electrical work. Topics covered include isolating circuits, testing circuits, working on energized equipment, portable electrical tools, electrical PPE, work area safety, electrical systems, lock out/tag out procedures, and personal protective equipment requirements. The overall message is that electrical work requires strict safety protocols to prevent injury or death from electrical hazards.
This document provides guidance on electrical safety. It defines electrical hazards such as shock, arc, and blast. It outlines responsibilities and safe work practices for working on energized circuits, including having another person present for emergency reporting. Affected employees are trained to recognize electrical hazards and use proper safety techniques. The document discusses factors that influence injuries from electric arcs such as distance, absorption, temperature, and time. It provides tips for avoiding shock such as using GFCIs, inspecting equipment, and not handling electrical devices with wet hands.
This document discusses electrical product safety in the United States. It outlines the hazards posed by electrical products, including fires, electric shock, and burns. To address these risks, the U.S. Consumer Product Safety Commission uses a multi-pronged approach including supporting safety standards, enforcing regulations, identifying defective products, and educating consumers. Manufacturers and importers are responsible for ensuring their electrical products comply with voluntary consensus standards to prevent potential hazards and the need for recalls. The document provides several case studies to illustrate how the CPSC addresses emerging hazards and participates in the standards process.
This chapter discusses safety practices for hand and portable power tools. It notes that misuse of these tools can cause serious injuries and that they account for 6-8% of disabling injuries each year. The chapter covers proper tool selection, safety practices like using personal protective equipment and selecting the right tool for the job. It also discusses inspection and maintenance of tools, as well as safe operation of common hand tools like screwdrivers and hammers, and power tools like electric drills. The goal is to help prevent accidents and injuries caused by improper use of hand and portable power tools.
An arc flash is an electrical explosion that results from a short circuit or arc through the air. It produces severe burns, hearing loss, equipment damage, and puncture wounds. Arc flashes are caused by dropped tools, improper work procedures, insulation failures, and inattentiveness. Workers are at higher risk when exposed to energized parts often, required to perform multiple tasks, poorly trained, or have broken concentration. To prevent arc flashes, only qualified persons should work on or near energized equipment. Safe work practices include reviewing operations, determining hazards, implementing protective measures, wearing appropriate PPE, and knowing emergency response procedures.
Practical Electrical Substation Safety for Engineers and TechniciansLiving Online
Electrical substation safety is an important issue in utility networks as well as large industrial installations and requires adequate attention in the stages of system planning, design, installation, operation and maintenance. A number of serious accidents including fatalities occur every year in industrial establishments due to accidents involving electricity, resulting in huge financial losses and wasted man-hours. Electrical safety is a well-legislated subject and the various Acts and Regulations lay a lot of stress on the responsibility of both employers and employees in ensuring safe working conditions.
In this workshop, we will take a look at the theoretical aspects of safety as well as the practical and statutory issues. Safety is not simply a matter of taking precautions in the workplace. It has to start at the stage of equipment design. Safety should be built into the design of electrical equipment and it is the responsibility of every manufacturer of electrical equipment to remove every possible hazard that can arise from its normal use. Correct selection and application of electrical machinery is also important for ensuring safety. A thorough inspection during initial erection and commissioning as well as on a periodic basis thereafter is also very essential to ensure safety. Batteries used in substations need particular attention since they contain toxic materials such as lead, corrosive chemicals such as acid or alkali.
Electrical safety is not just a technical issue. Accidents can only be prevented if appropriate safety procedures are evolved and enforced. This includes appropriate knowledge of equipment and systems imparted through systematic training to each and every person who operates or maintains the equipment. We will cover all these aspects in detail.
MORE INFORMATION: http://www.idc-online.com/content/practical-electrical-substation-safety-engineers-and-technicians-28
This document outlines safety procedures and guidelines for working with electrical equipment and exposed electrical parts. Key points include:
- Electrical parts must be de-energized and locked/tagged out before working on them. A qualified person must perform lockout/tagout.
- Minimum clearance distances must be maintained when working near overhead power lines, with greater distances required for higher voltages.
- Nonconductive ladders and protective equipment or clothing must be used when exposed to energized parts to avoid arcing and shocks.
- Portable electrical equipment like power tools must be inspected for defects before each use and used properly by handling cords carefully and not modifying grounding systems. Circuits should not be manually
This document provides guidance on electrical safety. It outlines hazards of electricity and requires special training for work on electrical equipment. Only authorized employees may conduct electrical work. Topics covered include isolating circuits, testing circuits, working on energized equipment, portable electrical tools, electrical PPE, work area safety, electrical systems, lock out/tag out procedures, and personal protective equipment requirements. The overall message is that electrical work requires strict safety protocols to prevent injury or death from electrical hazards.
This document outlines an electrical safety training class on arc flash hazards and prevention. It discusses accident statistics showing the dangers of arc flashes. Key topics covered include electrical terminology, the differences between arc flash and arc blast, relevant industry standards like NFPA 70E, performing arc hazard analyses to determine appropriate personal protective equipment, establishing shock and arc flash boundaries, and ensuring safe work practices through lockout/tagout procedures.
The document discusses electrical safety. It defines electricity and its forms, electrical materials like conductors and insulators, and how electricity works by flowing through circuits. It describes the effects of electricity on the human body like electrical shocks and injuries. It emphasizes the importance of electrical safety and outlines safety practices like using personal protective equipment, lockout/tagout procedures, inspections, grounding, and being qualified for different electrical work. The document provides guidelines for working safely around electricity.
The document discusses proper use of hand tools for computer system servicing. It identifies different categories of hardware tools including ESD tools, hand tools, cleaning tools, and diagnostic tools. It emphasizes following safety guidelines when using tools to prevent injuries and equipment damage. Proper documentation of repairs using reference tools is also covered.
Electrical safety is important because an average of one worker is electrocuted on the job every day. The document discusses electrical safety hazards like ungrounded tools, exposed wiring, and overloaded circuits. It also reviews key electrical concepts like voltage, current, resistance, and grounding. Proper protective measures include ensuring equipment is grounded, using GFCIs, training workers, and following common electrical safety practices.
This document provides instructions for an LCD monitor. It includes safety precautions about electric shock and proper use and maintenance of the monitor. The document describes installing the monitor by attaching the stand securely using screws. It also provides information about operating the monitor safely and properly configuring menu settings. Troubleshooting tips and product specifications are included.
This document discusses arc flash safety at Murray State University. It defines arc flash hazards and effects, including burns, blast injuries, and toxic gases. It outlines requirements to de-energize equipment before servicing, and safe work practices if de-energization is not possible, including use of personal protective equipment (PPE) rated for the voltage level. The university is responsible for providing training and PPE, while employees must follow safe practices like using insulated tools and wearing required PPE when working on energized equipment.
This document discusses physical security for protecting enterprise resources including people, data, and facilities. It covers assessing threats and vulnerabilities, choosing a secure site location, designing security for the building structure and environment, implementing physical and administrative controls, and ensuring life safety measures like fire detection and suppression. Key considerations include perimeter security, access control, environmental factors, emergency procedures, and compliance with standards to help ensure security.
This document provides information about computer hardware tools used in computer system servicing. It defines various tools categorized as ESD, hand, cleaning, and diagnostic tools. Examples are given for each type of tool along with descriptions of their proper uses and safety procedures. The objectives and terms are also defined. Interactive portions provide questions to test understanding of identifying different tools from images and their uses. Activities at the end instruct the learner to choose 5 tools to describe their uses and how to use them safely.
Preventing Slips, Trips and Falls in the Health Care Industry by GTRIAtlantic Training, LLC.
Slips, trips, and falls are a major cause of injuries among healthcare workers. Common causes include floor contaminants from water or other liquids, poor drainage, surface irregularities, and tripping hazards. Solutions involve implementing housekeeping procedures to keep floors dry and clear, maintaining good drainage, promptly addressing issues like warped flooring or damaged stairs, using non-slip footwear and flooring, and training workers on safety practices and proper equipment use. Regular inspections and reviewing incident data can help identify hazards and ensure safety protocols are followed to reduce injuries over time.
This document summarizes OSHA's welding safety standards. It outlines the general requirements for welding, including definitions, fire prevention, ventilation, personal protective equipment, confined space entry, and the specific requirements for oxygen-fuel gas welding and cutting. The standards require ensuring welding areas are free of fire hazards, using fire watches when needed, proper ventilation, and PPE like eye protection and respirators. Cylinder storage, handling, and use must meet requirements to prevent explosions and fires.
This is the draft electrical presentation that I use in the OSHA 10 hour classes. I put it up here to give the reader an idea what I cover in the one hour.
I want to thank John Gryzwacz and Bob Lomastro for helping me with this presentation. They are the best electrical trainers in the country. Both teach the OSHA 3095 class at the OSHA ed centers.
Bob is at www.safetywizard.com
John is www.oshaprofessor.com
These presentation are always in continual improvement so I put a date on the draft. There are many earlier versions of this.
The document summarizes new OSHA regulations for electric power generation, transmission, and distribution that take effect in 2014 and 2015. It outlines requirements for minimum approach distances, arc flash protection, fall protection, host and contract employer responsibilities, and personal protective equipment. Key dates include completing incident energy calculations by January 1, 2015, and ensuring compliance with fall protection, arc-rated clothing, and flame-resistant clothing standards by April 1, 2015. The regulations aim to improve worker safety for electrical hazards.
The document provides information on safety practices and requirements for working with electrical arc flash hazards. It covers four main lessons: an introduction to the electrical arc flash hazard protection standard and why it is important; requirements of the standard such as training, hazard assessments, PPE; determining arc flash hazard boundaries; and PPE requirements. The goal is to educate workers on hazards and safety protocols to prevent injuries from potential arc flash situations.
This document provides an owner's manual and precautions for a product. It contains 3 sections - FCC information noting the product meets FCC requirements when installed as indicated, important safety information warning of fire and electric shock hazards if not installed properly, and precautions for correct and safe operation of the product.
An arc flash hazard assessment involves identifying arc flash and blast hazards, calculating the risk through short circuit and coordination studies, determining incident energy levels, and implementing control measures. Some challenges of implementing an arc flash program include convincing management that they are responsible for managing electrical safety risks on their premises through an arc flash study, collecting equipment and task data, and planning the roles and timeline for the assessment. Understanding arc flash incidents, injuries, and the development of safety standards helps illustrate the importance and focus on managing arc flash hazards.
The document is a user guide for the Aspire 5110/5100/3100 Series Notebook PC. It includes sections on safety instructions, taking care of the computer and accessories, an overview of the notebook's features and components, specifications, indicators, buttons, ports, pre-installed software, frequently asked questions, and how to request service. The guide provides information to help users operate, maintain, and get the most out of their new Acer notebook computer.
This document covers electrical safety and provides guidance on working with electricity. It discusses how electricity travels through circuits and can harm the human body. The key risks are outlined, such as damaged cords, overhead power lines, and wet conditions. The document recommends only using equipment that is in good condition, having qualified workers perform electrical tasks, and following procedures to control hazards like locking out power sources. Proper training, protective equipment, and circuit safety devices can help reduce risks from electricity.
This document provides guidance on electrical safety. It defines electrical hazards such as shock, arc, and blast. It outlines responsibilities and safe work practices for working on energized equipment, including having another person within sight or sound and planning for personal protective equipment. Electrical hazards increase with distance, absorption of energy, temperature, and time of exposure. The document recommends de-energizing live parts over 50 volts before work and using ground fault circuit interrupters for outdoor equipment. It also provides tips to avoid shock such as using three-prong plugs and dry hands when using electrical devices.
This document provides an overview of electrical safety topics including:
- The four main types of electrical injuries and their hazards
- Requirements for personal protective equipment, safe work practices, and lockout/tagout procedures when working with electrical equipment
- Hazards of arc flash and the importance of de-energizing circuits before conducting work
- Proper inspection and ratings for test instruments, tools, and other equipment used for electrical work
Electricity poses hazards such as electric shock, burns, and fire. The human body's resistance to electricity depends on factors like dryness of skin. Different amounts of current can cause sensations, pain, muscle control loss, and even heart failure or death. Ensuring electrical safety involves understanding Ohm's law, using insulated tools, following lockout/tagout procedures, employing protective equipment, and utilizing safe work practices around energized equipment. In industrial settings like refineries and manufacturing, electrical safety is maintained through engineering, qualified personnel, proper equipment selection, and explosion-proof applications.
This document outlines an electrical safety training class on arc flash hazards and prevention. It discusses accident statistics showing the dangers of arc flashes. Key topics covered include electrical terminology, the differences between arc flash and arc blast, relevant industry standards like NFPA 70E, performing arc hazard analyses to determine appropriate personal protective equipment, establishing shock and arc flash boundaries, and ensuring safe work practices through lockout/tagout procedures.
The document discusses electrical safety. It defines electricity and its forms, electrical materials like conductors and insulators, and how electricity works by flowing through circuits. It describes the effects of electricity on the human body like electrical shocks and injuries. It emphasizes the importance of electrical safety and outlines safety practices like using personal protective equipment, lockout/tagout procedures, inspections, grounding, and being qualified for different electrical work. The document provides guidelines for working safely around electricity.
The document discusses proper use of hand tools for computer system servicing. It identifies different categories of hardware tools including ESD tools, hand tools, cleaning tools, and diagnostic tools. It emphasizes following safety guidelines when using tools to prevent injuries and equipment damage. Proper documentation of repairs using reference tools is also covered.
Electrical safety is important because an average of one worker is electrocuted on the job every day. The document discusses electrical safety hazards like ungrounded tools, exposed wiring, and overloaded circuits. It also reviews key electrical concepts like voltage, current, resistance, and grounding. Proper protective measures include ensuring equipment is grounded, using GFCIs, training workers, and following common electrical safety practices.
This document provides instructions for an LCD monitor. It includes safety precautions about electric shock and proper use and maintenance of the monitor. The document describes installing the monitor by attaching the stand securely using screws. It also provides information about operating the monitor safely and properly configuring menu settings. Troubleshooting tips and product specifications are included.
This document discusses arc flash safety at Murray State University. It defines arc flash hazards and effects, including burns, blast injuries, and toxic gases. It outlines requirements to de-energize equipment before servicing, and safe work practices if de-energization is not possible, including use of personal protective equipment (PPE) rated for the voltage level. The university is responsible for providing training and PPE, while employees must follow safe practices like using insulated tools and wearing required PPE when working on energized equipment.
This document discusses physical security for protecting enterprise resources including people, data, and facilities. It covers assessing threats and vulnerabilities, choosing a secure site location, designing security for the building structure and environment, implementing physical and administrative controls, and ensuring life safety measures like fire detection and suppression. Key considerations include perimeter security, access control, environmental factors, emergency procedures, and compliance with standards to help ensure security.
This document provides information about computer hardware tools used in computer system servicing. It defines various tools categorized as ESD, hand, cleaning, and diagnostic tools. Examples are given for each type of tool along with descriptions of their proper uses and safety procedures. The objectives and terms are also defined. Interactive portions provide questions to test understanding of identifying different tools from images and their uses. Activities at the end instruct the learner to choose 5 tools to describe their uses and how to use them safely.
Preventing Slips, Trips and Falls in the Health Care Industry by GTRIAtlantic Training, LLC.
Slips, trips, and falls are a major cause of injuries among healthcare workers. Common causes include floor contaminants from water or other liquids, poor drainage, surface irregularities, and tripping hazards. Solutions involve implementing housekeeping procedures to keep floors dry and clear, maintaining good drainage, promptly addressing issues like warped flooring or damaged stairs, using non-slip footwear and flooring, and training workers on safety practices and proper equipment use. Regular inspections and reviewing incident data can help identify hazards and ensure safety protocols are followed to reduce injuries over time.
This document summarizes OSHA's welding safety standards. It outlines the general requirements for welding, including definitions, fire prevention, ventilation, personal protective equipment, confined space entry, and the specific requirements for oxygen-fuel gas welding and cutting. The standards require ensuring welding areas are free of fire hazards, using fire watches when needed, proper ventilation, and PPE like eye protection and respirators. Cylinder storage, handling, and use must meet requirements to prevent explosions and fires.
This is the draft electrical presentation that I use in the OSHA 10 hour classes. I put it up here to give the reader an idea what I cover in the one hour.
I want to thank John Gryzwacz and Bob Lomastro for helping me with this presentation. They are the best electrical trainers in the country. Both teach the OSHA 3095 class at the OSHA ed centers.
Bob is at www.safetywizard.com
John is www.oshaprofessor.com
These presentation are always in continual improvement so I put a date on the draft. There are many earlier versions of this.
The document summarizes new OSHA regulations for electric power generation, transmission, and distribution that take effect in 2014 and 2015. It outlines requirements for minimum approach distances, arc flash protection, fall protection, host and contract employer responsibilities, and personal protective equipment. Key dates include completing incident energy calculations by January 1, 2015, and ensuring compliance with fall protection, arc-rated clothing, and flame-resistant clothing standards by April 1, 2015. The regulations aim to improve worker safety for electrical hazards.
The document provides information on safety practices and requirements for working with electrical arc flash hazards. It covers four main lessons: an introduction to the electrical arc flash hazard protection standard and why it is important; requirements of the standard such as training, hazard assessments, PPE; determining arc flash hazard boundaries; and PPE requirements. The goal is to educate workers on hazards and safety protocols to prevent injuries from potential arc flash situations.
This document provides an owner's manual and precautions for a product. It contains 3 sections - FCC information noting the product meets FCC requirements when installed as indicated, important safety information warning of fire and electric shock hazards if not installed properly, and precautions for correct and safe operation of the product.
An arc flash hazard assessment involves identifying arc flash and blast hazards, calculating the risk through short circuit and coordination studies, determining incident energy levels, and implementing control measures. Some challenges of implementing an arc flash program include convincing management that they are responsible for managing electrical safety risks on their premises through an arc flash study, collecting equipment and task data, and planning the roles and timeline for the assessment. Understanding arc flash incidents, injuries, and the development of safety standards helps illustrate the importance and focus on managing arc flash hazards.
The document is a user guide for the Aspire 5110/5100/3100 Series Notebook PC. It includes sections on safety instructions, taking care of the computer and accessories, an overview of the notebook's features and components, specifications, indicators, buttons, ports, pre-installed software, frequently asked questions, and how to request service. The guide provides information to help users operate, maintain, and get the most out of their new Acer notebook computer.
This document covers electrical safety and provides guidance on working with electricity. It discusses how electricity travels through circuits and can harm the human body. The key risks are outlined, such as damaged cords, overhead power lines, and wet conditions. The document recommends only using equipment that is in good condition, having qualified workers perform electrical tasks, and following procedures to control hazards like locking out power sources. Proper training, protective equipment, and circuit safety devices can help reduce risks from electricity.
This document provides guidance on electrical safety. It defines electrical hazards such as shock, arc, and blast. It outlines responsibilities and safe work practices for working on energized equipment, including having another person within sight or sound and planning for personal protective equipment. Electrical hazards increase with distance, absorption of energy, temperature, and time of exposure. The document recommends de-energizing live parts over 50 volts before work and using ground fault circuit interrupters for outdoor equipment. It also provides tips to avoid shock such as using three-prong plugs and dry hands when using electrical devices.
This document provides an overview of electrical safety topics including:
- The four main types of electrical injuries and their hazards
- Requirements for personal protective equipment, safe work practices, and lockout/tagout procedures when working with electrical equipment
- Hazards of arc flash and the importance of de-energizing circuits before conducting work
- Proper inspection and ratings for test instruments, tools, and other equipment used for electrical work
Electricity poses hazards such as electric shock, burns, and fire. The human body's resistance to electricity depends on factors like dryness of skin. Different amounts of current can cause sensations, pain, muscle control loss, and even heart failure or death. Ensuring electrical safety involves understanding Ohm's law, using insulated tools, following lockout/tagout procedures, employing protective equipment, and utilizing safe work practices around energized equipment. In industrial settings like refineries and manufacturing, electrical safety is maintained through engineering, qualified personnel, proper equipment selection, and explosion-proof applications.
This document provides information on electrical safety. It discusses:
1. The basics of electricity including voltage, current, circuits, and conductors vs insulators.
2. Electrical hazards such as shock, arcs, ground faults, and faulty equipment.
3. How to protect yourself from electricity through lockout/tagout procedures, inspections, grounding programs, and PPE.
4. Classification of hazardous gas and dust areas and the requirements for electrical equipment in each area.
The document discusses workplace health and safety. It defines health, safety, hazards and risks. It outlines different types of hazards including physical, chemical, mechanical, electrical, ergonomic and psychological. Specific physical hazards like noise, vibration, lighting are described. Chemical hazards and ways to improve chemical safety are covered. The roles and responsibilities of employers and employees are mentioned. Engineering, administrative and personal protective controls are summarized as methods to reduce hazards. Common types of personal protective equipment like eye, head, hand and foot protection are outlined.
This document provides guidance on safely using power tools. It outlines that workers should be trained, inspect tools for damage before each use, and wear appropriate personal protective equipment. Safety checks include ensuring tools are double insulated, below 110 volts, and have a current Portable Appliance Test certificate. Hazard risks from power tools include electrocution, vibration white finger, noise, dust inhalation, and debris injuries. The document advises taking breaks to prevent vibration damage and using hearing protection for loud tools.
ECCU_ECCU 211_FORMATO TRABAJO FINAL_INGLÉS TÉCNICO_ANTONIO DELGADO MONCADA.pptxEnocngelArcentalesVa
Es es trabajo final de inglés técnico. Esta todo especificado sobre el tema relacionado al mantenimiento eléctrico y a la textilería. El trabajo final es del cuarto semestre de la carrera de Electricista Industrial. Inglés técnico. Espero que les sirva mucho. Un abrazo a la distancia y muchas bendiciones.
Workers using hand and power tools may be exposed to flying or falling objects, dust, fumes, and electrical or explosive hazards. Proper safety precautions include inspecting tools for damage, using the right tool for each job, guarding moving parts, wearing personal protective equipment, and receiving training on hazardous tools. Power tools like saws, drills, and sanders require additional precautions such as disconnecting tools when not in use, avoiding accidental starting, and securing workpieces.
The document discusses electrical hazards and safety. It defines electrical hazards, sources of hazards like equipment failure and improper insulation. It describes electrocution and effects of electric current on the human body. Methods to detect hazards and reduce risks include grounding, insulation, circuit breakers and personal protective equipment. OSHA standards for electrical system design and work practices are outlined. The importance of training workers and implementing an electrical safety program are emphasized.
The document discusses electrical hazards and safety. It defines electrical hazards, sources of hazards like equipment failure and improper insulation. It describes electrocution and effects of electric current on the human body. Methods to detect and reduce hazards like grounding, circuit breakers and personal protective equipment are outlined. OSHA electrical standards, developing an electrical safety program, self-assessment checklists, preventing arc flashes and training requirements are also summarized.
This document discusses major construction safety hazards and how to avoid them. It identifies the top four hazards as falls, electrocution, being struck by falling objects, and being trapped during excavation. It provides guidance on fall protection, electrical safety, preventing falling objects, and safe excavation practices. It emphasizes using personal protective equipment, having fall protection systems, lockout/tagout procedures, competent oversight of excavations, and following all relevant OSHA regulations to stay safe during construction work.
1) Foundry safety is important as working with molten metal is inherently dangerous, but proper safety measures can make melt shops accident-free.
2) Key roles like melt shop supervisors and management must make safety a top priority through training, oversight of safe equipment operation, and establishing safety as a core value.
3) Identifying and preventing hazards through adherence to manufacturer and regulatory guidelines, use of protective equipment, emergency plans, and automated processes can help reduce foundry accidents.
Industrial safety aims to reduce, control and eliminate hazards through proper management. There are various types of industrial hazards including chemical, mechanical, physical, electrical and fire. Mechanical hazards stem from machinery and can cause injuries. Machines must be properly safeguarded to minimize risks. Boilers and pressure vessels require safety valves, water gauges and blowdown valves to operate safely under pressure. Electrical hazards can cause burns, shocks or electrocution and death. Proper identification, isolation and grounding of power sources helps protect workers. Fires are fueled by the fire triangle of oxygen, heat and fuel and different fire classes require appropriate extinguishers. Detection devices also help identify fires early.
Authority, A. E. (2017, November 2). YouTube. Retrieved from https ://www.youtube.com/watch?v=WseklKhGGAM&feature=youtu.be
Edvard. (2020, August 10). Electrical Engineering Portal. Retrieved from https ://electrical-engineering-portal.com/protection-three-phase-motors-from-unbalance-phase-loss-rotation
Electrical, P. (2019, August 3). YouTube. Retrieved from https ://www.youtube.com/watch?v=toUXbbPy7IU&feature=youtu.be
Electricveda. (2020). Electricveda.com. Retrieved from http s://www.electricveda.com/building-services/method-of-clean-earthing-or-grounding-in-electrical-system
Engineering, L. (2017, January 31). YouTube. Retrieved from http s://www.youtube.com/watch?v=km8MSWm39Z0&feature=youtu.be
Generator, I. (2015, October 12). YouTube. Retrieved from http s://www.youtube.com/watch?v=kyGWAVqnBFY&feature=youtu.be
Goyal, S. (2013, May 30). YouTube. Retrieved from http s://www.youtube.com/watch?v=2Pb3y69LUYw&feature=youtu.be
Hall, D. T. (2019). Practical Marine Electrical Knowledge. SSS Marine Society.
Insights, M. (2020). Ship's Electro-Technology part 1. Marine Insights.
Keljik, J. (2008). Electricity 2; Devices, Circuits, and Materials 8th Edition. New York: Delmar Cengage Learning.
Keljik, J. (2008). Electricity 4; AC/DC Motors, Control, and Maintenance 8th Edition. New York: Delmar Cengage Learning.
Keljik, J. (2013). Electricity 3: Power generation and Delivery 10th Edition. New York: Delmar Cengage Learning.
Kitcher, C. (2015, December 14). YouTube. Retrieved from http s://www.youtube.com/watch?v=FUjZwMMoltQ&feature=youtu.be
LabVolt. (2004). AC/DC MOTORS AND GENERATORS. Quebec: LabVolt Services.
LabVolt. (2004). Electric Power / Control; AC/DC Motor and Generator. Quebec: LabVolt Services.
LabVolt. (2004). ELECTRIC POWER / CONTROLS; COMPUTER-BASED INSTRUMENTS FOR EMS. Quebec: LabVolt Services.
Lessons, E. (2010, May 23). YouTube. Retrieved from https ://www.youtube.com/watch?v=ZL8zrkahuL0&feature=youtu.be
MyMisterSparky. (2010, January 21). YouTube. Retrieved from https ://www.youtube.com/watch?v=Vkd43t2y2to&feature=youtu.be
Wik, R. (2016, May 9). YouTube. Retrieved from http s://www.youtube.com/watch?v=jGdCqSxtTfo&feature=youtu.be
Woodworth, J. (2016, August 8). YouTube. Retrieved from http s://www.youtube.com/watch?v=yFCWzQxT3nE&feature=youtu.be
Yaskawa. (2017, August 21). YouTube. Retrieved from http s://www.youtube.com/watch?v=3-cs4eEiBWo&feature=youtu.be
Yaskawa. (2019, May 14). YouTube. Retrieved from http s://www.youtube.com/watch?v=qpKybaLURy0&feature=youtu.be
Yaskawa. (2019, May 20). YouTube. Retrieved from http s://www.youtube.com/watch?v=_ZztDN5XX5o&feature=youtu.be
This document from OSHA's Office of Training & Education provides information on electrical safety hazards and controls. It notes that about 5 workers are electrocuted each week and electricity can cause harm even at low voltages. The main types of electrical injuries are direct electrocution or shock, and indirect injuries like falls. The document outlines various electrical hazards like exposed parts, overhead lines, improper wiring, and overloaded circuits. It recommends controls like guards, insulated tools, grounding, GFCIs, and lockout/tagout procedures to isolate energy sources and protect workers.
This document provides training on electrical safety. It outlines responsibilities for management and employees to identify electrical hazards and prevent accidents. Hazards of electricity include shock, burns, arc blasts, explosions and fires. Electrical accidents are caused by unsafe equipment, environments and practices. Safe work practices like using protective equipment and following lockout/tagout procedures can prevent accidents. The key messages are that electricity can be deadly if misused but the risk is negligible if sensible precautions are taken.
Máy lọc không khí Daikin MC40UVM6
Tinh lọc không khí với Công nghệ Streamer và phin lọc tĩnh điện Hepa.
Thiết kế hình tháp, tinh tế và nhỏ gọn.
Diện tích: 31 m2
Công suất: 4 m3/ phút
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2. ATMOSPHERE:
• ENVIRONMENT, HEALTH AND SAFETY:
• Almost all the corporate companies in Indian and abroad have A written policy on EHS. The policy
is percolated down the line and is monitored at regular interval of time for its proper execution.
The policy is revised based on the requirement.
• Voltas,GMR and Andhra bank are no different and all of them have written policy on EHS.
• The subject covers the policy broadly and is mandatory for al the students to follow the same
during the training and thereafter.
5. We are
increasing CO2
level by using
Industrial Gases Automobiles De-Forestation
Chemicals &
Effluents
Releasing CO2 & CO Releasing CO2 & CO Cutting O2 source Releasing Acids
7. EARTH’S ENERGY:
During the day the earth absorbs heat from the sun,
70 % of the heat is radiated back out into space.
The balance 30 % reflected from earth’s surface.
These gases are called greenhouse gases because
they effectively make the blanket around our globe
12. GENERAL SAFETY:
• 5S is a workplace organization technique
• It is a way to involve associates in the ownership of their workspace
• It helps create and maintain the efficiency and effectiveness of a work area
What is it?
13. BASIC SAFETY RULES
• Perform regular maintenance
• Use right tool for the job
• Inspect all tools before use
• Use the right personal protective equipment (PPE)
• Report to your supervisor any unsafe tool.
14. THE FIVE S’S
• Sorting – separating the needed from the not-needed
• Simplifying – a place for everything and everything in its place, clean and ready to use
• Systematic cleaning or sweeping – cleaning for inspection
• Standardizing – developing common methods for consistency
• Sustaining – holding the gains and improving
15. WHAT’S IT FOR?
• IT IS A WAY TO CREATE:
• Cleaner work areas
• More organization
• Safer working conditions
• Less wasted time
• Efficient work processes and practices
• More available space
16. PLANNING
• Assemble a 5S lead team
• Define the work area 5S boundaries
• Assign work group members to their 5S areas
• Install a 5S communication board
• Determine 5S targets, activities, and schedule
• Review/finalize plans with work group and site leadership
17. PREPARING FOR IMPLEMENTATION
• Obtain existing standards for color-coding and signage
• Decide on 5S color-coding and signage standards
• Prepare for sorting
• Prepare for simplifying
• Prepare for systematic cleaning
• Prepare for standardizing
• Prepare for sustaining
18. SUMMARY: IMPLEMENTING FIVE S’S
• Share 5S overview
• Choose work area implementation group
• Determine implementation targets, activities, and schedules
• Document current situation
• Apply 5s’s
• Document improvements
• Determine new improvement goals and action steps
19. ISSUES AND CONCERNS
• Communicating across shifts
• Disposing of, or moving, personal items
• Making time available
• Following agreements consistently
• Maintaining the gains
• Giving rewards and recognition
• Integrating 5S with other improvement activities
21. ELECTRICAL SAFETY:
CAUSES:
• UNSAFE CONDITIONS
o Faulty insulation
o Improper grounding
o Loose connections
o Defective parts
o Ground faults in equipment
o Unguarded live parts
o Underrated equipment
o Work environment
Prevailing Mind Set
“It Won’t Happen To Me”
(Famous Last Words)
ELECTRICAL HAZARDS:
22. How Electricity Acts:
• Power Source – The Power Generating Station
• Transport Method – Electric Current Travels Through Conductors,
Normally In The Form Of Wires
• Force – The Pressure To Make Electricity Flow, Measured In Volts, Is
Provided By A Generator
Behind Turning On An Electric Switch There
Must Be:
23. ENERGIZED (electrically): electricity is flowing into and powering A piece
of equipment in order for it to perform its function, i.e., The equipment is
“live” or “hot”
Only QUALIFIED PERSONS May Work
On Energized Electric Circuit Parts Or
Equipment
• Trained To Avoid The Electrical
Hazards Of Working On Or Near
Exposed Energized Parts
24. BODY PATH RESISTANCE CURRENT
Ear to Ear 100 1,100 mA
Head to Foot 500 220 mA
Dry Skin 350,000 0.3 mA
Wet Skin 1,000 110 mA
SHOCK HAZARD :
Conductors - Offer Little Resistance To The Flow
Of Electric Current
• Metals, Water
Insulators - Have High Resistance to the flow of
electric current
• Porcelain, Pottery, Dry Wood
Low Resistance High Current
High Resistance Low Current
Dry Skin Has A Fairly High Resistance To
Electric Current; But When Moist There Is A
Drastic Drop In Resistance.
Dry Your Hands Before Inserting/ Removing
A Power Plug.
Effects On Human Body:
25. INSULATION:
Material located between points of different
potential to prevent the flow of electricity
• Most common causes of failure - heat, dirt,
chemicals, moisture, sunlight & physical
damage
SHOCK HAZARD:
120 And 240 Volt Wire Color Codes
• Phase 1 - Black
• Phase 2 - Red
• Phase 3 - Blue
• Neutral - White Or Three White Stripes
• Ground - Green Or Green Striped
277 And 480 Volt Wire Color Codes
• Phase 1 - Brown
• Phase 2 - Orange
• Phase 3 - Yellow
• Neutral - Gray Or With 2 White Stripes
• Ground - Green With Yellow Stripe
Protective Measures:
26. GUARDING
• > 50 V requires
o Enclosed room
o Permanent partitions
o > 8’ above floor
o Platform / balcony / gallery
• > 600 v requires
o Metal-enclosed equipment
o Enclosed vault controlled by a lock
o Marked with caution signs
27. GROUNDING:
Non-current-carrying metallic system components, such as
equipment cabinets, enclosures, and structural steel, need to be
electrically interconnected so voltage potential cannot exist between
them then A low-resistance path to the earth is provided
• Service / system ground
o White / gray wire is grounded at the generator /
transformer & at the service entrance of the building
o Protects machines, tools & insulation against damage
• Equipment ground
o Additional ground path from machine / tool to the ground
o Protects equipment operator
NOT a Guarantee Against Shock
28. Circuit Breakers Fuses GFCIs
CIRCUIT PROTECTION DEVICES
Protects worker from overcurrent & short circuits by automatically shutting off the electricity
• Overcurrent caused by: malfunction, overheating, too much on A circuit, power surge,
damaged insulation
30. GROUND-FAULT CIRCUIT INTERRUPTER (GFCI)
Designed to shutoff electricity within 1/40th of a second
• Compares current going into and out of equipment
o Interrupts power if differs more than 6 ma
• Prevents electrocution
• Used in high-risk areas
o Wet locations
o Construction sites
Receptacle GFCI
Portable GFCIs
31. REPLACE / RESET CIRCUIT PROTECTION
• Random power surge: replace fuse or reset breaker
o Use exact duplicate fuse
Higher rated fuse can damage equipment / start A fire
Lower rated fuse could explode
• Circuit breaks again or if there is smoke, heat or unusual odor
o Immediately de-energize
o Do not keep resetting breaker - find the problem
• Never bypass, bridge or disable
32. Type of FR clothing required for work on or
near systems rated at:
• 240 volts & below (low-energy work)
o Natural-fiber / non-synthetic clothing is
adequate for many tasks
o Some higher risk tasks require flame
resistant (FR) clothing
• 241 - 559 volts
Requires at least one layer of FR clothing
worn over natural-fiber clothing
PERSONAL PROTECTIVE EQUIPMENT(PPE)
FLAME RESISTANT (FR) CLOTHING:
33. • Type 1 – Reduce Impact Force From Blow To Top Of Head
• Type 2 - Reduce Impact Force From Blow To Top Or Sides Of Head
• Class G (General) – Reduce Danger Of Contact With Low Voltage
(Tested At 2,200 Volts Phase To Ground)
• Class E (Electrical) - Reduce Danger Of Contact With Higher
Voltages (Tested At 20,000 Volts Phase To Ground)
• Class C (Conductive) – Not Intended To Protect Against Electrical
Hazards
Hard Hat Ratings:
ANSI Head Protection Standard Z89.1
34. Dielectric Mats
And Use Protective Equipment/Insulated Tools
Rubber / Composition Gloves / Sleeves
• Personally Assigned
• Inspect & Air Test At Start Of Each Day
• To Be Regularly Lab Tested Every 6 Months
35. TOOL SAFETY:
• Loss of eye/vision
• Using striking tools without eye protection.
• Puncture wounds
• Using a screwdriver with a loose handle which causes the hand to slip.
• Severed fingers, tendons and arteries
• Using a dull knife requires so much force that your hand may slip down the blade.
• Broken bones
• Using the wrong hammer for the job and smashing a finger.
• Contusions
• Using a small wrench for a big job and bruising a knuckle.
TOOL HAZARDS
36. • Do not use defective tools
• Use tied-off containers to keep tools from falling off of molds or work platforms.
• Keep all cutting tools sharp.
• Carry all sharp tools in a sheath or holster.
• Return tools to their storage places after use.
37. • Watch your hands and fingers.
• Keep your mind on your work.
• Grip tools firmly.
• Operate according to the manufacturer's instructions.
• Never carry a tool by the cord or hose.
• Never yank the cord or the hose to disconnect it from the receptacle.
• Disconnect tools when not in use, before servicing, and when changing accessories such as
blades, bits and cutters.
39. THREE WAYS TO EXTINGUISH A FIRE
• Starvation - removal of fuel
• Smothering - removal of oxygen
• Cooling - removal of heat
• Remove any one of the three components and fire cannot start or be
sustained
40. FIRE CLASSIFICATION:
• Class A: SOLIDS such as paper, wood, plastic etc
• Class B: FLAMMABLE LIQUIDS such as paraffin, petrol, oil etc
• Class C: FLAMMABLE GASES such as propane, butane, methane etc
• Class D:METALS such as aluminium, magnesium, titanium etc
• Class f:cooking OIL & FAT etc
41. TYPES OF FIRE EXTINGUISHERS:
WATER
• 6 or9 liter size
• Suitable for class A fires
• Not for use on flammable liquids
• Not to be used near to live
electrical apparatus
• Discharge time, approximately 60
seconds
• Weighs approximately 15 kilOS
42. FOAM
• Multi-purpose foam spray
• 9 liters, 6 liters or 2 liters
• Ideal for burning solids and
hydrocarbon liquids
• Can be rated for use on live
electrical equipment
43. DRY POWDER
• 1kg, 2kg, 3kg, 6kg, and 9kg capacities
• ABC powder for burning solids, burning liquids
and if specially trained, burning gases
• Could be harmful in a confined space, and will
contaminate prepared foods, and delicate
electronic equipment
• Little cooling effect
44. SPECIAL FIRE EXTINGUISHERS
• ‘Fry fighter’
• For class F fires (overheated
cooking oils/ fats)
• ‘Unique’ wet chemical’
formulation to saponification
the burning fat
45. CARBON DIOXIDE (CO2)
• Clean non conductive agent
• Ideal for fires involving live
electrical apparatus
• Noisy in operation
• Some parts of the extinguisher
will become very cold
• Little to no cooling effect
49. ELECTRICITY:
Electricity is the set of physical phenomena associated with the presence and motion of electric
charge. The presence of an electric charge, which can be either positive or negative, produces an
electric field. The movement of electric charges is an electric current and produces a magnetic field.
50. EFFECTS OF ELECTRIC CURRENT:
• THREE EFFECTS OF AN ELECTRIC CURRENT:
• Heating effect : Generally a battery or cell is used as a source of electrical energy. If an electric
circuit is purely resistive (only resistors are connected to a battery), the energy from the source
continually gets dissipated totally in the form of heat.
• Magnetic effect: The magnetic effect of electric current is known as electromagnetic effect . it is
observed that when a compass is brought near a current carrying conductor the needle of compass
gets deflected because of flow of electricity. This shows that electric current produces a magnetic
effect.
• Chemical effect : The passage of an electric current through a conducting liquid
causes chemical reactions. The resulting effects are called chemical effects of currents. The
process of depositing a layer of any desired metal on another material, by means of electricity, is
called electroplating.
52. CAPACITOR:
A capacitor is a passive two-terminal electrical component that stores potential energy in an
electric field. The effect of a capacitor is known as capacitance.
TYPES OF CAPACITORS:
1.STARTING CAPACITOR:
A motor capacitor, such as a start capacitor or run capacitor
is an electrical capacitor that alters the current to one or more
windings of a single phase AC induction motor to create a rotating magnetic field.
2.RUNNING CAPACITOR:
Capacitors are small cylindrical objects that store energy. They either send a
jolt to start a motor or send jolts to keep a motor running. They work with the
compressor, the blower motor, and the outside fan in your air conditioner.
53. RELAYS:
• Relays are switches that open and close circuits electromechanically or
electronically. Relays control one electrical circuit by opening and closing contacts in another
circuit. When a relay contact is normally closed (NC), there is a closed contact when the relay is
not energized.
54. TYPES OF RELAYS:
1. OVER LOAD RELAY:
A relay that opens a circuit when the load in the circuit exceeds
a present value, in order to provide overload protection;
usually responds to excessive current, but may
respond to excessive values of power, temperature, or other quantities.
Also known as overload release.
2.BOX RELAY:
Box relay is a new workflow tool that allows anyone to
easily create custom workflows. Box relay helps you and
your team get work done faster.
57. INTRODUCTION:
• Air conditioning is the process of removing heat and moisture from the interior of an occupied
space, to improve the comfort of occupants.
• Refrigeration is a process of removing heat from a low-temperature reservoir and transferring it
to a high-temperature reservoir. The work of heat transfer is traditionally driven by mechanical
means, but can also be driven by heat, magnetism, electricity, laser, or other means.
58. TYPES OF REFRIGERATION:
• Top freezer type refrigerators.
• Bottom freezer type refrigerator.
• Side by side refrigerator.
• Single door refrigerator.
• Compact refrigerator.
59. TYPES OF AIR CONDITIONING:
• 1.Residential air conditioner.
→Window ac.
→Portable ac.
→Split ac.
• 2.Commercial air conditioner.
→Ductable ac.
→Central plant ac.
60. REFRIGERATION SYSTEMS FOR INDUSTRIAL PROCESSES:
• Small capacity modular units of direct expansion type (50 tons of refrigeration)
• Centralized chilled water plants with chilled water as a secondary coolant (50 – 250 TR)
• Brine plants with brines as lower temperature, secondary coolant (>250 TR)
61. REFRIGERATION SYSTEMS:
• Vapour compression refrigeration (VCR): uses mechanical energy
• Vapour absorption refrigeration (VAR): uses thermal energy
63. ADVANTAGES & DISADVANTAGES OF AIR CONDITIONING SYSTEM:
• Advantages
• Prevents dehydration and heat strokes.
• Improves the quality of air.
• Helps to reduce asthma and allergies.
• Skin dryness.
• Aggravation of respiratory problems.
• Respiratory tract infections and allergies.
• Disadvantages of air conditioner on health
• Unexpected changes in humidity & temperature affects individual's respiratory system.
• Regular usage of air conditioner dries skin & mucous membranes.
• Its ambient noise, leads to noise pollution.
• Air circulation even transmits infectious respiratory diseases.
• Airborne dust & fungi cause allergic reactions.