Electricity has to be transmitted over large distances as the place where the power is being generated and the place where it is consumed can be far apart. What are some general safety tips for working with or near electricity. In most substation applications, a class 2 rubber glove is the required level of protection. Another extremely important substation engineering aspect is associated with safety protection. Rubberizedinsulated ppe maintenance all electrical equipment shall be tested according to cianbro safety. Substation safety manual free download as pdf file.
Distribution substations michigan technological university. The electrical substation does not have a single circuit but is composed of numerous outgoing and incoming circuits which are connected to a busbar i. The report is designed to provide a nonexhaustive summary of risk issues, based on a limited. This training program is designed to provide the student with basic information about circuit breakers that are used in substations and switchyards. Loosefitting plugs can cause overheating and fires. Test test test on x 1 fpw12 visit esfis website at. Health and safety executive electrical switchgear safety a guide for owners and users this is a webfriendly version of leaflet indg372rev1, published 04 introduction this guidance is for owners and operators of electrical switchgear in industrial and commercial organisations with little electrical knowledge or expertise available inhouse.
They are also equipped with circuit breakers to protect the. Selection of the location of a substation must consider many factors. Electrical substations are supplementary parts of electricity generation systems, where voltage is transformed from high to low and vice verse using transformers. Applicable to tata power operating and project sites which cover but not limited to plant premises, switchyards, substations, offices etc. The checklists are in pdf format and can be completed electronically or printed and used as hard copy. Electrical safety handbook for emergency responders 1. Access to maintain large apparatus such as transformers.
Personnel protection most company policies require you to notify the dispatch center or substation owner before entering and leaving a substation, which is a good industry practice for several reasons. Osha, electrical safety related work practices, 29 cfr part 1910 9. Electrical substation safety is all about strict adherence to rules and regulations. A substation is a highvoltage electric system facility.
The substation receives electrical energy directly from generating stations through incoming power supply lines while it delivers electricity to the consumers. Electrical safety hazards book for electrical workers eep. Manage activitiesjobs associated with electrical hazards safely. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and. Introduction to substations annotated instructors guide module overview this module introduces trainees to the function of substations at all levels of the power grid, with an introduction to typical substation components included. Aug 17, 2016 electrical safety awareness for non electrical workers duration. Sep 10, 2019 safety procedures formulated to meet requirements outlined in nesc and other standards go a long way in making substations more secure against known hazards and triggers. Upon entering an attended substation, each employee, other than employees regularly working in the station, shall report his or her presence to the employee in charge of substation activities to receive information on special system conditions affecting employee safety. This pdf contains 77 electrical inspection checklists taken from the 2014 electrical inspection manual with checklists. Electrical safety ppe best practices including 1910. Electrical substations are the interface between parts of the distribution grid and transmission systems.
So, the safety manual is prepared on the basis of power safety rules handbook and gerc power system safety standard by making necessary modifications. Substations containing stepup transformers increase voltage and decrease current. Installations meeting the ansi provisions comply with paragraph b of this section. Fortunately, substation construction standards and the national electrical safety code have changed over the years to help reduce hazards.
Substations a substation is a highvoltage electric system facility. Electrical safety in the workplace is the most important job of an electrical worker. Pdf pas an important node in the power grid, substation plays a very important role in the whole power grid. Inspect portable cordandplug connected equipment, extension cords, power bars, and electrical fittings for damage or wear before each use. A substations primary function is to transform voltage from low to.
American national standard national electrical safety code, ansiieee c22012 contains guidelines for the dimensions of access and working space about electric equipment in substations. Substation safety manual high voltage safety free 30. An electrical substation is the component of a power system with which voltages are transformed for the transmission, distribution, transformation and switching of power. Sep 09, 2014 electrical substation safety is an important issue in utility networks as well as large industrial installations and requires adequate attention in the stages slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Safety awareness for substations incident prevention. Pdf analysis on safety measures of substation maintenance. Control of incidents related to electrical shock and hazards. Inspect portable cordandplug connected equipment, extension cords, power bars, and electrical. Feb 29, 2016 an electrical substation is a subsidiary station that is part of an electrical generation, transmission, and distribution system. Personnel protection most company policies require you to notify the dispatch center or substation owner before entering and leaving a substation. A substation is a part of an electrical generation, transmission, and distribution system. What is a electrical substation definition, layout, and.
This document supports the power system safety rules and its requirements assembled under work in substations general category 3. Safety procedures formulated to meet requirements outlined in nesc and other standards go a long way in making substations more secure against known hazards and triggers. For the purposes of this discussion, substation refers to substations and switching stations. Contact with substation equipment can cause serious injury or even death. This work instruction supports the power system safety rules and its requirements assembled under safe. Our 12hour live online substation training course will cover the major elements that build electrical substations and switchyards. Distribution voltages are typically medium voltage, between 2. The input for a distribution substation is typically at least two. The report is designed to provide a nonexhaustive summary of risk issues, based on a limited sampling and duration of time onsite by the named qaf. Considering the fact that the entire premise is rife with potential electrical and chemical hazards, even the slightest negligence can prove. The checklists are intended to help inspectors keep track of the numerous aspects of an electrical. Substations connect to the grid through power lines, and they are dangerous locations for anyone not well trained in electrical safety. Substation safety manual high voltage safety scribd. Electrical safety awareness for non electrical workers duration.
This 12hour live online substation training course give. Ambayic, pabillo, vio ecet3a philippine electrical code. This document supports the power system safety rules and its requirements assembled under high. Health and safety executive electrical switchgear safety a guide for owners and users this is a webfriendly version of leaflet indg372rev1, published 04 introduction this guidance is for owners and operators of electrical switchgear in industrial and commercial organisations with little electrical. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and plugs any gaps where asset management documentation does not exist. Compliance with all technical requirements all energize elements comply with the required clearances clearances verify compliance with the last requirements of the national electrical safety code or prepa diseno subw\copy of svc subst profile 2. Personnel trained to work inside substations must take appropriate safety precautions and always wear personal. The checklists are intended to help inspectors keep track of the numerous aspects of an electrical installation. The input for a distribution substation is typically at least two transmission or subtransmission lines. Dec, 2018 the electrical substation does not have a single circuit but is composed of numerous outgoing and incoming circuits which are connected to a busbar i. Home download center electrical engineering books and technical guides power substation guides electrical safety hazards book for electrical workers electrical safety is a serious issue electrical safety in the workplace is the most important job of an electrical worker.
Voltages at transmission substations, highvoltage electricity passes through a transformer. The document describes instructions for general work in substations and is complementary to the power system safety rules, advising on how to apply these principles for different types of work. These fenced off areas see figures 1 and 2 step down the voltage in the transmission lines to one that is suitable for the distribution grid. Interfere with any item of electrical equipment without first having. By the same analogy we can explain what a substation does. Personnel trained to work inside substations must take appropriate safety precautions and always wear personal protective equipment ppe. Rubberizedinsulated ppe maintenance all electrical equipment shall be tested according to cianbro safety policy, procedures and best practices. Electrical protection handbook 1990 bussman, cooper industries, inc. An electrical substation is the component of a power. Philippine electrical code is hereby adopted and the standards contained are considered safety standards to safeguard any person employed in any workplace and control the practice of electrical engineering electrical safety inspection installation assemblage of electrical equipment in a given location.
Electric shock, electrocution, arc flash, burn injury, blast, uv light, incident energy and 1. It is used to switch generators, equipment, and circuits or lines in and out of a system. Practical electrical substation safety for engineers and. Considering the fact that the entire premise is rife with potential electrical and chemical hazards, even the slightest negligence can prove damaging. Considering the fact that the entire premise is rife with potential electrical.
Staying alert and cautious, taking adequate precautions and protective measures also help personnel. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. It has been well documented that failures in key procedures such as racking mechanisms, meters, relays and busses are among the most common source of unplanned outages. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. Philippine electrical code is hereby adopted and the standards contained are considered safety standards to safeguard any person employed in any workplace and control the practice of electrical engineering electrical safety inspection installation assemblage of electrical. It details the electrical hazards which must be managed to ensure the safety of personnel when working in switchyards, substations, high voltage areas including cable tunnels, general facilities and yard maintenance including low voltage electrical. Do not enter an electrical power substation, or other marked areas. Nfpa 70e, electrical safety requirements for employee workplaces 2000 edition 6. Outlets without a snug fit should be replaced by a licensed electrician. This electrical substation and switchyard design course focus on elementary safety standards and practices in substations and switchyard design. If the transformer contained within the substation. The site must have room for expansion due to load growth or planned transmission additions. Highvoltage cables are manufactured to exact specifications so that they can withstand a variety of mechanical and electrical stresses.
Though governed by several rules, legalities, and codes, the ieee c2 national electricity safety. Electrical substation safety is an important issue in utility networks as well as large industrial installations and requires adequate attention in the stages slideshare uses cookies to. No matter how much training one has received or how much employers try to safeguard their workers, electrical safety is ultimately the responsibility of the electrical. Normally stations are where we catch trains or buses. It also is used to change ac voltages from one level to another, andor change alternating current to direct current or direct current to alternating current. This course provides an introduction to electrical safety when working around substations and switchgear.
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