Handbook on construction techniques asian development bank. External companies should not use these standards to construct nonergon energy assets. Enable power transmission at varied angles and varied lengths. Transmission line design manual bureau of reclamation. An introduction to electric power transmission presentation. The field manual contains definitions of electrical terms and diagrams of electric power systems, plus sections devoted to line conductors. These standards ensure meeting of ergon energys requirements. Michels installed 27 concrete caisson foundations ranging from 7 to 10 feet in diameter and up to 64 feet in depth and 73 direct embed excavations 5 feet in diameter and up to 36 feet in depth to support michels construction of a transmission line. World bank group environmental, health, and safety. An s64f erickson aircrane flies off with a section of lattice tower that will be transported to a construction site on henderson island in the ohio river for a power transmission line being built from the big rivers power complex in henderson county to the a. The manual is prepared on the basis of power safety rules handbook and gerc power system safety standard by making necessary modifications. Construction related environment due diligence triggers and general cumulative impacts 163 a. The purpose of this article is to give a general overview of the steps that are necessary in the planning and construction of a typical overhead transmission line, to give newcomers to the trade a general format to follow, and assist transmission design engineers in understanding how such lines are built.
Major steps in a transmission line construction are a appropriate. Ieee guide for transmission structure foundation design, ieee std. Transmission line construction construction of transmission lines involves the following activities. This is because manual transmission has better mechanical and gear train efficiency. Transmission line construction california public utilities. The substation construction 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 plug any gaps where asset management documentation does not exist.
Vehicles with automatic transmission are costlier than those of manual transmission. It typically takes longer to develop, permit and construct a transmission line than it does to develop a generation facility. Guidelines for the construction and maintenance of. Electrical transmission and distribution construction contractors and trade association osha partnership best practices purpose. The standards contain general requirements for constructing substation and. Transmission lines are used in power distribution at low frequencies, and in communications at high frequencies. The line route should be so selected that the maintenance is easy and the line does not cause obstruction to vehicular traffic and should be shortest, as well, consistent with engineering and economic principles.
The associated field guide is a waterproofed version of this manual, which summarizes key erosion and sediment control points for use by field crews. Construction supervisors will ensure all entergy contractors are briefed prior to the start. Two parallel wires coaxial cable microstrip line optical fiber waveguide very high frequencies, very low loss, expensive etc. Environmental, health, and safety guidelines electric power transmission and distribution april 30. Transmission line construction process there are several steps needed prior to poles being installed.
However, hand ties are vulnerable to loosening from various forces and types of motion. Implementation of transmission line infrastructure projects by uganda electricity transmission company limited uetcl list of acronyms and abbreviations afd french development agency afdf africa development fund ap angle point cgv chief government valuer epc engineering procurement and construction gou. The construction and maintenance of transmission line rightsofway, especially those aligned through forested areas, may result. Juho ylihannuksela the transmission line cost calculation. Once a hand tie has loosened, it constitutes a potential source of abrasion during any subsequent. Site preparation foundation construction structure construction wirestringing operations site preparation tower locations are cleared of vegetation prior to construction of the towers. Construction manual for transmission lines surveying payments. Provide a varied leverage between the engine and the drive wheels provide means to transfer power in opposite direction. All rus borrowers rus electric staff effective date. The standards contain general requirements for constructing substation and transmission line projects.
Transmission line construction, an ieee standards collection, 1994. Construction manual for transmission lines surveying. Implementation of transmission line infrastructure projects by uganda electricity transmission company limited uetcl list of acronyms and abbreviations afd french development agency afdf africa development fund ap angle point cgv chief government valuer epc engineering procurement and construction gou government of uganda. The usfs and blm will also authorize timber sale contracts to allow for the purchase and clearing of timber for this project. Guidelines for electrical transmission line structural loading. Dams for construction, operation, and maintenance of the transmission line and access roads. Constructing new transmission lines and switchyard. Construction manual for transmission lines slideshare. The transmission line is a twoport circuit used to connect a generator or transmitter signal to a receiving load over a distance. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. One transmission line at this high voltage was built near chicago as part of the interconnection for three large nuclear power plants southwest of the city. The process can vary depending on the size of the line, soil conditions, terrain and other variables. Construction manual for transmission lines free download as pdf file. Manual for transmission lines and substation construction.
Safety risk management for electrical transmission and. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Design manual for high voltage transmission lines on photo. Guidelines for electrical transmission line structural loading edited by c. Scribd is the worlds largest social reading and publishing site. Standard for distribution line design overhead these standards created and made available are for the construction of ergon energy infrastructure. Lrfd load and resistance factor design, aisc, manual of steel construction. Manual on transmission planning criteria central electricity authority 2 manual on transmission planning criteria contents preamble 4 scope and planning philosophy 1. Construction process for transmission lines the following construction process will be followed for the entire route of the new transmission lines. Sendingend port a a b b transmission line generator. Michels installed approximately 250 miles of high voltage 345kv ac transmission line. If unitypf resistive loads are added at the end of a line, the voltage at the end of the transmission line decreases slightly small positive vr. Pdf pipeline planning and construction field manual e.
On multiple circuit structures or line corridors, access shall. Transmission lines a transmission line connects a generator to a load a two port network transmission lines include physical construction. American institute of steel construction, 1 east wacker drive. General cumulative impacts during construction, operations and maintenance phase 163 b. If the speed and ice with concurrent wind maps defined in the asce manual. Manual transmission automatic transmission vehicles with manual transmission are usually cheaper. Usually, the establishment of the voltage on major transmission lines, the. The standards, project specifications, standard drawings, and project drawings together completely describe the project to be constructed. Construction of transmission and distribution lines. A transmission line consists of two or more parallel conductors used to connect a source to a load.
I appreciate the work done by the members of the committee in preparing and bringing out this construction manual for transmission lines. Lines at this voltage also serve markets in new york and new england, also very high demand. However, these are by no means exhaustive as it is not possible to visualize all the. Guidelines for the construction and maintenance of transmission lines photo by mike lawrence. Planning philosophy and general guidelines 6 criteria for steadystate and transientstate behavior 4. Provide means of connection and disconnection of engine with rest of power train without shock and smoothly. Primary clearing will occur within the transmission line and access road rows and some danger trees removed outside the row. Monitoring during construction, operations and maintenance phases 165. Request pdf on jan 31, 20, alex albert and others published safety risk management for electrical transmission and distribution line construction find, read and cite all the research you.
Generally, structures are built from the ground up. Where required design drawings for construction shall include the following. This manual covers all the activities related to the construction of transmission lines. The construction and maintenance of transmission line rightsof way, especially those aligned through forested areas, may result in alteration and disruption to terrestrial habitat, including. Pipeline planning and construction field manual e shashi menon elsevier 2011.
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