Electrical safety is a mystery to many safety engineers world over. Breaking into the world of electrical installations is next to impossible. This document is prepared to help safety engineers to ...
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Electrical Safety Talk
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This covers the electrical safety auditing covering scope, approach,methodology, etc. and can be used for safety engineers.
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This is a comprehenive Electrical Safety checkpoint compliation based on author's auditing experience and consulting experience of petrochemical plants.
Electric installation and work related is one of source of hazards. Ineffective electrical installation may lead to many injuries as electric shock, fire, and explosion. The main gate to imp…Deskripsi lengkap
A short document covering the basics of electrical safety
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Swp on electrical safety which is applicable in KNPC refinaryFull description
Electrical safety auditingFull description
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Electrical Safety - Basic Information Why is it so important to work safely with or near electricity? The electrical current in regular businesses and homes has enough power to cause death by electrocution. Even changing a light bulb without unplugging the lamp can be hazardous because coming in contact with the "hot" or live part of the socet could ill a person.
What kinds of injuries result from electrical currents? There are four main types of in!uries electrocution #fatal$% electric shoc% burns% and falls. These in!uries can happen in various ways • •
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direct contact with the electrical energy. when the electricity arcs #!umps$ through a gas #such as air$ to a person who is grounded #that would provide an alternative route to the ground for the electricity$. thermal burns including flash burns from heat generated by an electric arc% and flame burns from materials that catch on fire from heating or ignition by electrical currents. &igh voltage contact burns can burn internal tissues while leaving only very small in!uries on the outside of the sin. muscle contractions% or a startle reaction% can cause a person to fall from a ladder% scaffold or aerial bucet. The fall can cause serious in!uries.
What are some general safety tips for working with or near electricity? Inspect tools% power cords% and electrical fittings for damage or wear prior to each use. 'epair or replace damaged e(uipment immediately. )lways tape cords to walls or floors when necessary. *ails and staples can damage cords causing fire and shoc hazards. +se cords or e(uipment that is rated for the level of amperage or wattage that you are using. )lways use the correct size fuse. 'eplacing a fuse with one of a larger size can cause e,cessive currents in the wiring and possibly start a fire. Be aware that unusually warm or hot outlets may be a sign that unsafe wiring conditions e,ists. +nplug any cords to these outlets and do not use until a (ualified electrician has checed the wiring. )lways use ladders made of wood or other non-conductive materials when woring with or near electricity or power lines. lace halogen lights away from combustible materials such as cloths or curtains. &alogen lamps can become very hot and may be a fire hazard. 'is of electric shoc is greater in areas that are wet or damp. Install Ground Fault Circuit Interrupters #/0Is$ as they will interrupt the electrical circuit before a current sufficient to cause death or serious in!ury occurs. 1ae sure that e,posed receptacle bo,es are made of non-conductive materials. 2now where the breaers and bo,es are located in case of an emergency.
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3abel all circuit breaers and fuse bo,es clearly. Each switch should be positively identified as to which outlet or appliance it is for. 4o not use outlets or cords that have e ,posed wiring. 4o not use power tools with the guards removed. 4o not bloc access to circuit breaers or fuse bo,es. 4o not touch a person or electrical apparatus in the event of an electrical accident. )lways disconnect the current first.
What are some tips for working with power tools? Switch tools 5// before connecting them to a power supply. 4isconnect power supply before maing ad!ustments. Ensure tools are properly grounded or double-insulated. The grounded tool must have an approved 6-wire cord with a 6-prong plug. This plug should be plugged in a properly grounded 6-pole outlet. Test all tools for effective grounding with a continuity tester or a ground fault circuit interrupter #/0I$ before use. 4o not bypass the switch and operate the tools by connecting and disconnecting the power cord. 4o not use electrical tools in wet conditions or damp locations unless tool is connected to a /0I. 4o not clean tools with flammable or to,ic solvents. 4o not operate tools in an area containing e,plosive vapours or gases.
What are some tips for working with power cords? 2eep power cords clear of tools during use. Suspend power cords over aisles or wor areas to eliminate stumbling or tripping hazards. 'eplace open front plugs with dead front plugs. 4ead front plugs are sealed and present less danger of shoc or short circuit. 4o not use light duty power cords. 4o not carry electrical tools by the power cord. 4o not tie power cords in tight nots. 2nots can cause short circuits and shocs. 3oop the cords or use a twist loc plug.
What is a Ground Fault Circuit Interrupter (GFCI)? ) round /ault 0ircuit Interrupter #/0I$ wors by detecting any loss of electrical current in a circuit. 7hen a loss is detected% the /0I turns the electricity off before severe in!uries or electrocution can occur. ) painful shoc may occur during the time that it taes for the /0I to cut off the electricity so it is important to use the /0I as an e,tra protective measure rather than a replacement for safe wor practices. /0I wall outlets can be installed in place of standard outlets to protect against electrocution for !ust that outlet% or a series of outlets in the same branch. ) /0I 0ircuit Breaer can be installed on some circuit breaer electrical panels to protect an entire branch circuit. lug-in /0Is can be plugged into wall outlets where appliances will be used.
When and how do I test the Ground Fault Circuit Interupter (GFCI)? Test the /0I monthly. /irst plug a "night light" or lamp into the /0I-protected wall outlet #the light should be turned on$% then press the "TEST" button on the /0I. If the /0I is woring properly% the light should go out. If not% have the /0I repaired or replaced. 'eset the /0I to restore power. If the "'ESET" button pops out but the light does not go out% the /0I has been improperly wired and does not offer shoc protection at that wall outlet. 0ontact a (ualified electrician to correct any wiring errors.
What is a sample checklist for basic electrical safety? Inspect Cords and lugs •
0hec power cords and plugs daily. 4iscard if worn or damaged. &ave any cord that feels more than comfortably warm checed by an electrician. !liminate "ctopus Connections
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4o not plug several power cords into one outlet. ull the plug% not the cord. 4o not disconnect power supply by pulling or !ering the cord from the outlet. ulling the cord causes wear and may cause a shoc. #e$er %reak "FF the &hird rong on a lug
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'eplace broen 6-prong plugs and mae sure the third prong is properly grounded. #e$er 'se !tension Cords as ermanent Wiring
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+se e,tension cords only to temporarily supply power to an area that does not have a power outlet. 2eep power cords away from heat% water and oil. They can damage the insulation and cause a shoc. 4o not allow vehicles to pass over unprotected power cords. 0ords should be put in conduit or protected by placing plans alongside them.