Hazards of electricity pdf

If these charges cannot move or flow to ground, the static charges continue to accumulate, and will eventually develop enough energy to jump as a spark to another nearby object. This equates to more than one work related death every work day in america. Electricity has long been recognized as a serious workplace hazard, exposing employees to electric shock, electrocution, burns, fires, and explosions. Safety training resources including powerpoints, audio presentations, tool box talks, meetings, handouts, and quizzes, all complete with trainers resources for easy training. The flash causes an explosive expansion of air and metal. Electrical hazards safety toolbox talks meeting topics free safety topics, toolbox talks, safety meetings, tailgate topics and safety resources including presentations, photographs and documents.

The most common causes of electrical hazards in office environments are faulty or defective equipment, unsafe installation, or misuse of equipment particularly extension cords, power strips, and surge protectors. A comprehensive database of more than 18 electrical safety quizzes online, test your knowledge with electrical safety quiz questions. Since 1998, according to the ministry of labour, 69 people were killed, 263 were critically injured and 844 workers received more than minor injuries as a result of exposure to electrical hazards. Electricity has killed three people in the mining industry since august 7, 2019. If you do not recognize, evaluate, and control hazards, you may be injured or killed by the electricity itself, electrical fires, or falls. Give students handout c electrical safety scenario. However, you can take simple precautions when working with or near electricity and electrical equipment to significantly reduce the risk of injury to you, your workers and others around you. This con edison electricity expert will help you teach students basic safety rules that will keep them safe when using electricity inside or. Use the links below to find information on hazards when working with electricity, how to assess these, precautions you can take and your legal obligations. The cords should be replaced because homemade repairs often lead to fires. Do not handle electrical equipment when hands, feet or body are wet or perspiring, or when standing on a wet floor. Common hazards cm 17549 1211 circuit breakers a circuit breaker is a protective device designed to protect the circuit and equipment when it becomes overloaded as a result of too many appliances or equipment on the circuit, as well as when a short develops in a wire.

However, we need to be cautious and keep safety in mind. To understand electricity and electrical safety, you must thoroughly understand ohms law. All electrical systems have the potential to cause harm. Do watch out for power lines when using a ladder, chainsaw or other outdoor equipment. Electrical safety site electricity is a familiar and necessary part of everyday life, but electricity can kill or severely injure people and cause damage to property. Electrical shock the point at which a person contacts a source of electrical energy. These short solved questions or quizzes are provided by gkseries. The basic guidelines regarding the safe handling of electricity documented below will help you while working with electricity. Electrical safety at work should be a concern to all organisations.

Electricity in the workplace health and safety authority. Insulators substances, such as dry wood, rubber, glass and bakelite, that have high resistance to. A rough value for the resistance of the human body is 3001,000 ohms. Dynamic electricity is the uniform motion of electrons through a conductor this is known as electric current. Static electricity hazards under certain conditions, liquids, solid objects and people can become charged with static electricity. The body becomes a part of, or completes the electrical circuit, causing a portion of the electrical energy to flow through the body. It is intended for use by victorias emergency services. In the laboratory, workers may be exposed to electrical hazards including electric shock, arc blasts, electro cutions, fires and explosions. Electrical safety electrical hazards pose a serious threat to.

Conductors substances, such as metals, that have little resistance to electricity. Electrical hazards introduction electricity is essential to modern life, both at home and on the job. This procedure is effective for neutralizing exterior charge accumulation but does not affect the interior charge. Arc flash hazards arc flash is the result of a rapid release of energy due to an arcing fault between one conductor and another or to neutral or a ground. Electricity can kill or severely injure people and cause damage to property. A shock can result in paralysis of muscles and lead to a falls from height. The second type of hazard is electrical burns and the third is the effects of blasts which include pressure.

A safe work environment is not always enough to control all potential electrical hazards. The document focuses on some of the fundamentals of electricity, electrical wiring, electric tools. Dealing with electricity is not easy since it is a risky job. Furthermore, efforts to generate more electricity are having significant. Prior to this project, standard safety procedures involved wrapping the pipe with wet soapy burlap. This guide is not meant to be either a substitute for or a legal interpretation of the occupational safety and health regulations. Electrical safe work practices including electrical safety. Britton center for chemical process safety of the american institute of chemical engineers 3 park avenue, new york, new york 100165901 usa. Pdf electrical hazards and safety measurs written by tarek. Electrical workers safety handbook 1 a c k n o w l e d g m e n t handbook acknowledgment this is to acknowledge that i have received my copy of the electrical workers safety handbook. Some employees engineers, electricians, electronic technicians, and power line workers, among them work with electricity directly. Electrical hazards awareness page 7 of 49 efcog electrical safety improvement project electrical current basically, electrical hazards can be categorized into three types. The construction industry is most at danger from electrical hazards, accounting for 52% of all electrical fatalities in the us workplace. When an electrical engineer works, they have to follow the safe standard operating procedures.

Uw personnel need to be aware of the hazards electricity poses, such as shock, fire and explosion, and either eliminate or control those hazards. Department of labor occupational safety and health. The information below relates to workplaces using 230 and 400 volt supplies. Electricity hazards safety guide energy safe victoria. These are the most common and will be present in most workplaces at one time or another. Nfpa, 1 batterymarch park, quincy, ma 02169 purpose provide assistance in controlling the hazards associated with the generation, accumulation, and discharge of static electricity contains. Safety rules help you control your and others risk of injury or death from workplace hazards. A tingling feeling when you touch an electrical appliance discolored or warm wall outlets a burning or rubbery smell coming from an appliance flickering or dimming lights sparks from an outlet q inspect your home for hidden electrical hazards. Meeting osha regulations, reducing insurance costs, and minimizing downtime and repair costs are additional benefits of electrical safety programs. Hazards of electricity and static electricity, 6th edition. These short objective type questions with answers are very important for competitive exams as well as board exams. I agree to read and follow all safety rules outlined in this booklet.

Avoiding static ignition hazards in chemical operations a ccps concept book laurence g. You will learn skills to help you recognize, evaluate, and control electrical hazards. Participants will develop understanding of the requirements of osha sub part s and nfpa, 70e and will be able to identify and reduce or eliminate electrical safety hazards in their workplace. May 23, 2014 2 introduction types of current dangers of electricity to the living tissue electric shock conditions that effect the shock saving the electrified person protection against electrical hazards electric hazard control things to be avoided safety measures regular safety inspection references 3. Others, such as office workers and sales people, work with it indirectly. Naturally, the resistance also depends on the path that electricity takes through the body if the electricity goes in the left hand and out the right foot, then the resistance will be much higher than if it goes in and out of adjacent fingers.

Avoiding static ignition hazards in chemical operations. Oshas general industry electrical safety standards are published in. But sometimes a persons body an efficient conductor of electricity mistakenly becomes part of the. Simply stated, voltage e in volts is equal to the current i in amperes multiplied by the resistance r in ohms. Conductors are materials that allow the movement of electricity through it. Hazards from static electricity in industries, such as air conditioning, the manufacture of explosives, grain and flour storage, textiles, and printing, static electricity, under many. Do have an adult put safety caps on all unused electrical outlets. Georgia department of administrative services 3 current the movement of electrical charge. How having an electrical hazards program can help your business. An exchange for safety professionals on solving their safety issues. Even household current 120 volts can stop your heart.

I agree to report all injuries to my foreman immediately, no matter how minor the. Electricity travels in closed circuits, normally through a conductor. Under the electricity at work regulations 1989, employers need to take action for. A person approved or assigned by the employer to perform a specific type of duty or duties or to be at. Electrical safety electrical hazards pose a serious threat to worker safety. Its vitally important to take safety precautions when working with electricity.

Osha standards cover many electrical hazards in many different industries. Common hazards, your legal duties and precautions you can take when working with electricity. If you use the safety model to recognize, evaluate, and control hazards, you are much safer. Do not stick fingers or other objects into light sockets or electric outlets. This brochure has been designed to satisfy the demand for assessing the risks of people, working with electricity andor exposed to electrical hazards. Electrical hazards safety toolbox talks meeting topics. Avoid water at all times when working with electricity. Electricity april, 2012 1 introduction the paradox of electricity is that modern civilisation has become totally dependent on the continuous and increasing availability of one of the most lethal physical agents that a human can contact. According to the bureau of labor statistics, 289 employees were killed by contact with electric current in 2002. Electrical safety hazards handbook the worlds leading provider of circuit protection solutions littelfuse is the global leader in circuit protection a.

Important definitions and notes are shown in the margins. Electrical safe work practices including electrical safety principles. Oct 12, 2015 the most common causes of electrical hazards in office environments are faulty or defective equipment, unsafe installation, or misuse of equipment particularly extension cords, power strips, and surge protectors. Safety must not be compromised and some ground rules need to be followed first. Covering outlets will also help save energy by stopping cold drafts. Consider all floors as conductive unless covered with insulating matting of suitable type for electrical work. Light fixtures, lamps and light bulbs are another common reason for electrical fires.

Electrical safety michigan water environment association. Ask each group to identify at least three things that could have been done to. Thirty thousand 30,000 electrical shock incidents occur every year. Electrical hazards awareness page 32 of 49 efcog electrical safety improvement project clothing. An electrician contacted an energized component of a 4,160 vac electrical circuit while adjusting the linkage between the. Safety tips have all electrical work done by a qualified electrician. Its not a secret electricity can be dangerous and when things go wrong lives can be at stake.

During an arc fault the air is becomes the conductor. Electrical shock happens when current passes through the body. Installing a bulb with a wattage that is too high for the lamps and light fixtures is a leading cause of electrical fires. Developed to compliment safety training, hazards of electricity and static electricity is the perfect reference tool and training aid for increasing operators awareness of the hazards of electricity and static electricity in the chemical and process industries. This section provides a summary of those precautions. What are common electrical hazards and how do i fix them. Electrical safety electrical work can be deadly if not done safely. Common electrical hazards its your life protect it. The health and safety toolbox do you want guidance on simple precautions to take when working with or near electricity and electrical equipment.

The first and most commonly recognized hazard is electrical shock. We rely on electricity, but sometimes underestimate its capability of causing injury. You will learn about the safety model, an important tool for recognizing, evaluating, and controlling hazards. Electrical injuries an arc flash is a release of energy caused by an electric arc figure 262. Ohms law is the most important and most often applied law in electricity. Pdf electrical safety hazards handbook yasir ahmed. Our online electrical safety trivia quizzes can be adapted to suit your requirements for taking some of the top electrical safety quizzes. The dangers of electricity, electrical shock, and the resulting injuries will be discussed. Home electrical safety checklist keeping you and your family safe, roombyroom u. Electrical safety special training is required for work on electrical equipment only authorized employees may conduct electrical work. Arcflash and other electrical safety hazards 27 electrical safety hazards 27 electric shock 27 arcflash and arc blasts 28 arcflash metrics 29 arcblast effect 31 light and sound effects 31 electrical hazard analysis 32 shock hazard analysis 32 approach boundaries 32 flash hazard analysis 34 arcflash calculations 35. Electrical safety multiple choice questions and answers for competitive exams. An understanding of these principles is essential for comprehension of oshas electrical safety standards.

Most of these incidents and fatalities were caused by direct worker contact with overhead power lines and contact with machines, tools, and handcarried metallic objects. Common electrical related hazards electricity healthy. Electrical hazards a major cause of accidents involving electricity comes from the failure to identify the hazards associated with live electrical equipment and wiring figure 261. Many workers are unaware of the potential electrical hazards present in their work environment which makes them more vulnerable to the danger of electrocution and arc flash incidents.

Eliminating andor reducing these hazards require a basic knowledge of electric circuits. They include unsafe conditions that can cause injury, illness, and death. Electrical safety basic awareness provides basic electrical hazard awareness information in accordance with osha 29 cfr 1910 subpart s. The electricity can go right through the tree branch and right through you. Always check the maximum recommended bulb wattage on any lighting fixture or lamp and never.