Safe work practices on high voltage substation apparatus summary this document supports the power system safety rules and its requirements assembled under high voltage substation apparatus category 5. The document describes safe work practices for the control of hazardous situations. Feb 29, 2016 our customers for substation safety equipment regularly pose questions relating to safety protection during substation operation and maintenance. Use these safety management resources to create a culture of a safety with your employees. Never use an extension cord with a major appliance it can easily overheat and start a fire. 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. The conference will feature guest speakers from leading companies in utilities and industry with representatives from the health and safety authority. Grantee materials by topic occupational safety and health. Safety training resources including powerpoints, audio presentations, tool box talks, meetings, handouts, and quizzes, all complete with trainers resources for easy training. 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.
Do look up and look out for power lines before you climb a tree. While most of the safety practices stem out of common sense and practical learning, some potential problem areas may skip attention. Substations have a set of unique rules that are strictly enforced by the governing utility or municipality, known as the designated authority. It receives three 220kv lines from sikandrabad, loni and dadri an.
This information is not intended to be a safety manual or a training manual. 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. A substation is a part of an electrical generation, transmission, and distribution system. Page 6 of 49 efcog electrical safety improvement project 1. Quality and continuity regulations 2002 or on the contents of these guidance notes. Give students handout c electrical safety scenario. Do ask an adult for help when you need to use something that uses electricity. Voltages at transmission substations, highvoltage electricity passes through a transformer. Personnel trained to work inside substations must take appropriate safety precautions and always wear personal protective equipment ppe. Electrical fire safety follow these electrical safety tips to help keep your home firesafe. Safety requirements for work on or adjacent to the distribution.
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. This document supports the power system safety rules and its requirements assembled under work in substations general category 3. Transformer secondary protected with a circuit breaker. This article is only a guide that outlines the basic requirements for personnel entering and working in a substation. Substation safety manual high voltage safety scribd. Ask each group to identify at least three things that could have been done to prevent this death. Introduce inexperienced engineersdesigners to practical methods for ground testing. 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 voltage runs through the substation, and out of the feeders. This article is only a guide that outlines the basic requirements for personnel entering and working in. In our company, who is primarily responsible for the following safety activities. Substation safety manual free download as pdf file.
Substation safety incident prevention dedicated to. This material is made available on the basis that it may be necessary for a registered professional engineer of. A unit substation is factory built and tested, then shipped in modules that are bolted together at the site. Do have an adult put safety caps on all unused electrical outlets. Fortunately, substation construction standards and the national electrical safety code have changed over the years to help reduce hazards. Procedures, live working manual, management safety procedures and health and safety guidance notes. Tennessee valley authority, chattanooga, tennessee abstract we need to better understand what our infrared camera is really showing us. Amess or en12 allows the holder independent entry to substations with exposed live bus bars and is the equivalent to. Substation configuration substation configuration can greatly affect protection choices substation physical design engineers must be in full agreement with protection and control engineers, even for temporary substation configurations. Safety ppt free download as powerpoint presentation. If that cant be met, live parts should be guarded or enclosed. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions.
Partial discharge training sf6 training substation training. Osha powerpoint presentations you can use in your safety training programs. Pdf electric power substations engineering, third edition erlet. This safety handbook has been compiled by econtractors to provide a. This management standard supports western powers safety, health and environment she. Sample documents for safety professionals to download or customize use these prewritten documents to help make managing your safety program easier. Unit substations usually contain high and low voltage disconnect switches, one or two threephase transformers, low voltage breakers, high voltage fusing, bus work, and relays. An answer sheet and a discussion topic is found on page 6b. Safetyinfo is a membership library of comprehensive readytouse safety information covering management, training and recordkeeping. Occupational safety and health hazard awareness training for the construction, oil and gas, and landscaping industries west virginia university research corporation 2011. Where a component of the lightning protection system lps has a primary. It is important to get information about any special conditions that could affect safety, like switching activity, crews working nearby, or substation visitors. 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.
Review of substation grounding practices, safety and constructability enhancements. Safety compliance checklist electrical utilities general 29 cfr 1910 y are workers wearing proper protective equipment ppe, such as gloves and sleeves. Lets take a look at some of the important safety measures that can minimise highrisk security threats commonly encountered in substations. Substation construction manual i reference ni000401r122 ver 3 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 revision history version description of change date 1 initial version 250320 2 content revised and. All persons are required to be aware of the substation emergency response manual. For example, the bottom of a post insulator supporting an energized bus does not normally have any potential. Substations transmission and distribution substations. Uttar pradesh power c0rporation ltd k al m t am it al e 4th ye nar 2. Appliances always plug major appliances, like refrigerators, stoves, washers and dryers, directly into a wall outlet. Safety awareness for substations incident prevention. Substations may be indoors or outdoors, and may be metal clad or open bus. A substation presents an inherent safety hazard because usually only some portions of the substation apparatus can be deenergized for maintenance. A distribution substation is commonly made up of two transmission lines that provide the input, and a set of feeders that act as an output.
Ask each group to identify at least three things that could have been done to. The electricity can go right through the tree branch and right through you. Substation construction manual i reference ni000401r122 ver 3 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 revision history version description of change date 1 initial version 250320 2 content revised and additional content added, including safety. Therefore, it is important to know what state the earthing system is in and that an adequate level of safety should be provided throughout the lifetime of an asset. When workers arrive at any substation where they dont regularly work, they are to report their presence to a site supervisor who, as is often the case, may be working remotely. Contact with substation equipment can cause serious injury or even death. The aim of a distribution substation is to transfer the power from a transmission system into a distribution system. The unit substation is a relatively recent development. This document supports the power system safety rules and its. Ame ss or en12 allows the holder independent entry to substations with exposed live bus bars and is the equivalent to.
Substations love your safety training vivid learning systems. Pdf earth protection system, also known as grounding system, is to protect the equipment in the substation by providing low impedance path. For safe operation and maintenance, a thorough knowledge of the substation, including aerial and underground. Pdf design of safety critical substation earthing system based. The use of a swage ground connection improves field safety.
There are a number of hazards unique to substations. Our customers for substation safety equipment regularly pose questions relating to safety protection during substation operation and maintenance. Since 1996, safetyinfo has been providing safety services to business and industry through this online safety library. Customer substation manual 6272019 preface page 8 of 82 010. A minimum height from the ground to any ungrounded part of an electrical installation should be 86, so a person staying on the ground cant touch a substation element or its part which may become energized accidentally. Calculation for energized work in the transformer metering section of a 2000 kva substation. Transmission and distribution substations customized solutions and modular concepts for utility and industrial applications substations substations are key installations in the power grid that facilitate the efficient transmission and distribution of electricity. Without guidelines, we may not understand how serious a. Y is protective grounding equipment provided and capable of carrying the maximum fault current that could flow at the point of grounding for the time necessary to clear the fault269n34. 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. Webinar substation the basics of a substation configuration and its components duration.
Oct 06, 2015 presentation on substation protection devices presented by. From osha compliance, recordkeeping and interactive charts to identifying workplace hazards, tracking safety performance and leading by example. Best practices for protection and control applications for. Review of substation grounding practices, safety and.
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