Feb 29, 2016 an electrical substation is a subsidiary station that is part of an electrical generation, transmission, and distribution system. Contact with substation equipment can cause serious injury or even death. Personnel trained to work inside substations must take appropriate safety precautions and always wear personal. Staying alert and cautious, taking adequate precautions and protective measures also help personnel. Electrical substations are the interface between parts of the distribution grid and transmission systems. Practical electrical substation safety for engineers and. Fortunately, substation construction standards and the national electrical safety code have changed over the years to help reduce hazards. The checklists are intended to help inspectors keep track of the numerous aspects of an electrical. The site must have room for expansion due to load growth or planned transmission additions. Manage activitiesjobs associated with electrical hazards safely. 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.
Normally stations are where we catch trains or buses. Applicable to tata power operating and project sites which cover but not limited to plant premises, switchyards, substations, offices etc. Rubberizedinsulated ppe maintenance all electrical equipment shall be tested according to cianbro safety policy, procedures and best practices. Voltages at transmission substations, highvoltage electricity passes through a transformer. Personnel protection most company policies require you to notify the dispatch center or substation owner before entering and leaving a substation. This document supports the power system safety rules and its requirements assembled under high. 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. Ambayic, pabillo, vio ecet3a philippine electrical code. 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. An electrical substation is the component of a power. Substations containing stepup transformers increase voltage and decrease current.
This pdf contains 77 electrical inspection checklists taken from the 2014 electrical inspection manual with checklists. Rubberizedinsulated ppe maintenance all electrical equipment shall be tested according to cianbro safety. This document supports the power system safety rules and its requirements assembled under work in substations general category 3. 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. This work instruction supports the power system safety rules and its requirements assembled under safe. 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. The checklists are in pdf format and can be completed electronically or printed and used as hard copy. 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. 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. Substations a substation is a highvoltage electric system facility.
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. The checklists are intended to help inspectors keep track of the numerous aspects of an electrical installation. When a highvoltage cable is terminated for a connection to a circuit or equipment in a substation or switchyard, the termination must also be made to exact specifications. For the purposes of this discussion, substation refers to substations and switching stations. 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. Considering the fact that the entire premise is rife with potential electrical. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions.
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. Electrical protection handbook 1990 bussman, cooper industries, inc. In most substation applications, a class 2 rubber glove is the required level of protection. An electrical substation is the component of a power system with which voltages are transformed for the transmission, distribution, transformation and switching of power. Electrical safety ppe best practices including 1910. Substation safety manual high voltage safety scribd. Another extremely important substation engineering aspect is associated with safety protection. Considering the fact that the entire premise is rife with potential electrical and chemical hazards, even the slightest negligence can prove. 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.
Electrical safety in the workplace is the most important job of an electrical worker. Highvoltage cables are manufactured to exact specifications so that they can withstand a variety of mechanical and electrical stresses. The substation receives electrical energy directly from generating stations through incoming power supply lines while it delivers electricity to the consumers. The input for a distribution substation is typically at least two transmission or subtransmission lines. Inspect portable cordandplug connected equipment, extension cords, power bars, and electrical fittings for damage or wear before each use. 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. Nfpa 70e, electrical safety requirements for employee workplaces 2000 edition 6. Electrical safety awareness for non electrical workers duration. By the same analogy we can explain what a substation does. Outlets without a snug fit should be replaced by a licensed electrician. 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. 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.
Osha, electrical safety related work practices, 29 cfr part 1910 9. This 12hour live online substation training course give. 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. Electrical substations are supplementary parts of electricity generation systems, where voltage is transformed from high to low and vice verse using transformers. A substation is a highvoltage electric system facility. It is used to switch generators, equipment, and circuits or lines in and out of a system. A substation provides a protected area for switching power circuits and may include transforming power from one voltage to another. Safety awareness for substations incident prevention. 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.
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. This course provides an introduction to electrical safety when working around substations and switchgear. Electrical substation maintenance is a key component of any substation owners electrical maintenance program. Personnel trained to work inside substations must take appropriate safety precautions and always wear personal protective equipment ppe. So, the safety manual is prepared on the basis of power safety rules handbook and gerc power system safety standard by making necessary modifications. 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. Do not enter an electrical power substation, or other marked areas. This training program is designed to provide the student with basic information about circuit breakers that are used in substations and switchyards. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Our 12hour live online substation training course will cover the major elements that build electrical substations and switchyards. Inspect portable cordandplug connected equipment, extension cords, power bars, and electrical.
Loosefitting plugs can cause overheating and fires. 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. 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. 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. Electrical substation safety is all about strict adherence to rules and regulations. A substation is a part of an electrical generation, transmission, and distribution system.
If the transformer contained within the substation. This electrical substation and switchyard design course focus on elementary safety standards and practices in substations and switchyard design. Test test test on x 1 fpw12 visit esfis website at. Substation safety manual high voltage safety free 30. The report is designed to provide a nonexhaustive summary of risk issues, based on a limited. 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. American national standard national electrical safety code, ansiieee c22012 contains guidelines for the dimensions of access and working space about electric equipment in substations. Ensure that trainees are briefed on basic electrical safety and shop safety. Distribution voltages are typically medium voltage, between 2. They are also equipped with circuit breakers to protect the. The input for a distribution substation is typically at least two. A substations primary function is to transform voltage from low to. Selection of the location of a substation must consider many factors.
Electric shock, electrocution, arc flash, burn injury, blast, uv light, incident energy and 1. Control of incidents related to electrical shock and hazards. Substation safety manual free download as pdf file. What are some general safety tips for working with or near electricity.
Considering the fact that the entire premise is rife with potential electrical and chemical hazards, even the slightest negligence can prove damaging. 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. Aug 17, 2016 electrical safety awareness for non electrical workers duration. 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. Pdf pas an important node in the power grid, substation plays a very important role in the whole power grid.
What is a electrical substation definition, layout, and. Access to maintain large apparatus such as transformers. 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. Electrical safety handbook for emergency responders 1. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. Substations connect to the grid through power lines, and they are dangerous locations for anyone not well trained in electrical safety. Installations meeting the ansi provisions comply with paragraph b of this section. Interfere with any item of electrical equipment without first having. Electrical safety hazards book for electrical workers eep. Distribution substations michigan technological university. Pdf analysis on safety measures of substation maintenance.
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