Basic Electrical Safety June 22nd 2016 Nailor Industries See if they do a safety briefing – If not Why? Introductions – Basic Electrical Safety June 22nd 2016

Basic Electrical Safety What are your expectations regarding Electrical Safety? Who is responsible for safety in the work place? Ask group what are your expectations from today - F/C responses review what they said and zero in on the points we will be covering - defining responsibilities and requirements so that personnel can recognize electrical hazards and avoid injury or fatality. Lets see what can happen when an electrical hazard is overlooked – Show Video

Basic Electrical Safety Facts On average on one worker is electrocuted on the job everyday On average one person is electrocuted in their home every 36 hours Emergency Rooms report 4,000 injuries per year associated with extension cords Electrical incidents are far more likely to be fatal than other types of incidents According to OSHA statistics and the department of labor…. Lets see what can happen when an electrical hazard is overlooked – Show Video 50% INVOLVE FRACTURES, LACERATIONS AND CONTUSIONS FROM TRIPPING

National Fire Prevention Association This where we gather our information. National Fire Prevention Association

Basic Electrical Safety What is Electricity? Electricity is a source of energy to power devices & machinery Two Basic Types of Electrical Energy Direct Current (DC) Batteries Alternating Current (AC) Pressure (Voltage) Restriction (Resistance) Flow (Current) Electricity is a source of energy to power devices & machinery - If you compare electricity to water, voltage is the water pressure and current is the rate of flow - Just as with water, the higher the voltage (pressure) or greater the current (flow rate), the more dangerous electricity becomes - Like water, electricity will take the path of least resistance. Current will most likely flow through a circuit instead of a human body unless the body presents a path of lower resistance. Lets take a look at some of the effects of electric shock

Basic Electrical Safety Effects of Electrical Contact Electric shock Electrical burns Loss of muscle control Thermal burns Effects of electrical shock can range from mild tingling to heart failure, depending on the amount of current and path through the body Has anyone ever been shocked by electricity? What happened? Electric shock A voltage as low as 50 volts applied between two parts of the human body causes a current to flow that can block the electrical signals between the brain and the muscles. This may have a number of effects including: Stopping the heart beating properly; Preventing the person from breathing; Causing muscle spasms Electrical burns When an electrical current passes through the human body it heats the tissue along the length of the current flow. This can result in deep burns that often require major surgery and are permanently disabling. Burns are more common with higher voltages but may occur from domestic electricity supplies if the current flows for more than a few fractions of a second. Loss of muscle control People who receive an electric shock often get painful muscle spasms that can be strong enough to break bones or dislocate joints. This loss of muscle control often means the person cannot ‘let go’ or escape the electric shock. The person may fall if they are working at height or be thrown into nearby machinery and structures. Thermal burns Overloaded, faulty, incorrectly maintained, or shorted electrical equipment can get very hot, and some electrical equipment gets hot in normal operation. Even low voltage batteries (such as those in motor vehicles) can get hot and may explode if they are shorted out. People can receive thermal burns if they get too near hot surfaces or if they are near an electrical explosion. Other injuries may result if the person pulls quickly away from hot surfaces whilst working at height or if they then accidentally touch nearby machinery. A single low voltage torch battery can generate a spark powerful enough to cause a fire or explosion in an explosive atmosphere such as in a paint spray booth, near fuel tanks, in sumps, or many places where aerosols, vapours, mists, gases, or dusts exist.

Basic Electrical Safety Leading Causes of Electrical Accidents: Drilling and cutting through cables Unqualified employees working with electricity Using defective equipment including Tools Cables Damaged extension cords Not using GFCI (ground fault circuit interrupters) devices

What is wrong with these pictures? Recognize the Hazards What is wrong with these pictures? NEC – National Electrical Code Both are NEC violations and present a safety hazard, based on inaccessible circuit control devices

What do you do if you see these situations? Recognize the Hazards What do you do if you see these situations? Call a timeout and inform your supervisor Do not remove or open receptacle covers, switch plates, or covers of electrical equipment unless qualified and authorized

Recognize the Hazards Remove Damaged and Frayed Cords Report Electrical Equipment damage to your Line Manager Stay clear of bare, exposed wiring and REPORT IT! Visually inspect electrical equipment before each use for damage and/or external defects such as loose, missing or deformed parts, pinched or crushed outer jackets or insulation. This type of external damage may indicate internal damage to the equipment. Electrical cords that are worn or damaged must be replaced without delay. Before cleaning electrical equipment, turn it off and unplug it.

Cabinets, Boxes, and Fittings Recognize the Hazards Cabinets, Boxes, and Fittings Junction boxes, pull boxes and fittings must have approved covers in place Unused openings in cabinets, boxes and fittings must be closed (no missing knockouts) Junction boxes, pull boxes and fittings must have approved covers in place Unused openings in cabinets, boxes and fittings must be closed (no missing knockouts) These Photo shows violations of these two requirements - Report this situation to management

Never daisy chain multi-outlet strips (plugging into each other) Recognize the Hazards Never daisy chain multi-outlet strips (plugging into each other) Extension cords are one of the top electrical fire causes and according to the CPSC, an estimated 3,300 residential fires originate from extension cords each year, killing and injuring over 300 people. Only use surge protectors that have circuit breakers or power strips with built in overload protection. Power strips without internal fuses are the equivalent of a regular extension cord. Check power strips and extension cords for nationally recognized testing lab certification and make sure the rating is for the same or higher number of watts used. Do not place against furniture, in hallways or under carpets. Do not plug more than one power strip or surge protector into the same outlet. Only use extension cords marked for ‘Outdoor Use’ outdoors and keep clear of st Extension cords are meant for temporary use only, if a there is a permanent need, have additional outlets installed by a licensed electrician.

Recognize the Hazards Grounding Path The path to ground from circuits, equipment, and enclosures must be permanent and continuous Violation shown here is an extension cord with a missing grounding prong Do not make alterations to polarized blades or ground pin to make plug fit into non-polarized or non-grounded outlet

Recognize the Hazards Physical Damage Electrical equipment and wiring must not be exposed to physical damage Picture shown here is physical damage to conduit Stay away from damaged equipment and report equipment damage to supervision

Recognize the Hazards Conductive Apparel Charm contacted plug Do Not wear loose conductive apparel, (such as rings, watch bands, bracelets, necklaces, etc.) when plugging in electrical cords Burn from arc The charm on this persons arm contacted the prongs of the plug as the person attempted to plug in a cord to power strip, resulting in a electrical short circuit and arc that burned the arm. Charm contacted plug here

Basic Electrical Safety If someone gets a shock Do not touch the victim Get Help/Call 911 Turn off power Use non-conductive object to push person away from the electrical source Administer rescue breathing, if breathing has stopped Administer CPR if heart has stopped Cover electrical burns Reassure & calm victim until help arrives

Basic Electrical Safety What do I do if I identify a hazardous condition? STOP the job Notify Supervisor

Why is it in this condition? Who is responsible? How can we move forward? What can we do?

Maintaining good Housekeeping will benefit not only Nailor but will benefit you as well