\n<\/span> The project of relocating the overhead and underground medium-voltage network interfering with the construction of the Kachooei underpass bridge, together with the construction of the street lighting network, was defined and implemented as one of the key plans in line with the renovation, safety enhancement, and upgrading of Karaj\u2019s urban electrical infrastructure.<\/span><\/p>\n
This project, with the aim of eliminating electrical conflicts along the bridge construction route and improving the lighting quality of the surrounding streets, is considered an effective step on the path of sustainable urban development and the improvement of public service quality. The implementation of this plan, with a contract amount of 4,100,000,000 rials and with Molavi Road and Building Company as the employer representing Karaj Municipality, in the time period from April 6, 2023, to August 22, 2023, was carried out by Pegah Energy Persian Company.<\/span><\/p>\n In this project, a set of specialized activities, including the design and construction of the underground medium-voltage network, the removal of interfering overhead networks, and the implementation of the street lighting system by employing modern technologies and standard equipment, was undertaken.<\/span><\/p>\n Considering the strategic location of the implementation site and the high volume of traffic infrastructure, this project is recognized as a model of integrated management of infrastructure projects in high-density urban environments. Pegah Energy Persian Company, by utilizing specialized personnel, advanced equipment, and a rigorous system of quality control (QA\/QC) and safety (HSE), was able to complete all stages of design, implementation, and performance testing within the specified time frame and at a desirable level of quality.<\/span><\/p>\n In the following, the technical and managerial details of the project\u2014including the overarching objectives, scope of services, execution structure, challenges and operational solutions, and ultimately the results and achievements obtained from the plan\u2019s implementation\u2014are addressed in detail so that a comprehensive picture of the process of implementing this project and its role in the development of urban infrastructure is presented.<\/span><\/p>\n <\/p>\n The main objective of implementing this project was to eliminate the conflicts of the medium- and low-voltage electrical networks within the area of the Kachooei underpass bridge construction and to create an infrastructure that is safe, durable, and compliant with modern standards of design and operation of urban power distribution networks. This plan is counted as a part of the overall strategy of renovating and optimizing vital urban infrastructure in the city of Karaj, which was designed and implemented with the aim of increasing network reliability, reducing energy losses, and improving the urban landscape.<\/span><\/p>\n Implementing this project was an effective response to the challenges arising from the interference of electrical networks with large-scale civil projects such as the construction of urban bridges.<\/span><\/p>\n The existing networks, as one of the main technical and safety obstacles of the civil project of the Kachooei underpass bridge, required principled and scientific relocation so that, while removing the conflict, the continuity and stability of the electrical supply to the area\u2019s subscribers would be preserved.<\/span><\/p>\n Also, implementation of this plan was raised in line with accelerating the construction operations of the underpass, reducing unplanned outages, and improving electrical energy efficiency in the dense urban fabric of Karaj. In the new design, by replacing old overhead networks with underground medium-voltage lines, the risks arising from physical damage, weather conditions, and unauthorized contact were reduced to the minimum possible. In addition to technical considerations, this project also had strategic importance from the perspective of urban development<\/span><\/p>\n By implementing the relocation and improvement of the electrical networks, the ground was prepared for increasing traffic safety, improving the quality of street lighting, and enhancing the urban image and landscape in the main axes of the Kachooei bridge area. Thus, this action, not only as a technical power-supply project, but as an effective step in realizing sustainable urban development and improving citizens\u2019 quality of life, is recognized.<\/span> <\/p>\n The scope of this project encompassed a set of specialized activities in the fields of design, implementation, safety, and optimization of urban power distribution networks, which were carried out with the aim of eliminating electrical conflicts and recreating the technical structure of the network in the Kachooei underpass implementation area. The execution operations were designed and implemented in three separate phases, but in a chain-like and continuous manner, so that, while maintaining continuity of power supply, the simultaneous progress of the bridge\u2019s civil operations would be possible.<\/span><\/p>\n <\/p>\n In this stage, detailed engineering studies and route designs for the underground feeders were carried out using geotechnical data and GIS surveying. The objective of this phase was to create two underground medium-voltage feeders with an approximate length of 8,300 meters so as to replace old overhead lines that conflicted with the bridge plan.<\/span> <\/p>\n The second stage was the work of decommissioning and eliminating some 4,500 meters of old overhead medium- and low voltage networks to clear the entire bridge construction path and minimize safety risks. At this phase, the implementation team based on HSE principles and after the transfer of loads to the new underground lines, continued with the dismantling of cables, poles, transformers, and overhead accessories.<\/span><\/p>\n This process, with high precision and in continuous interaction with the Karaj Power Distribution operation units, was performed so that no interruption would occur in supplying energy to consumers.<\/span> <\/p>\n In the third phase, in order to enhance traffic safety and improve public lighting in the underpass area and surrounding streets, the construction of 750 meters of street lighting network was carried out using steel poles and standard equipment.<\/span><\/p>\n In this stage, lighting studies and illumination intensity calculations were performed based on IES standards and Tavanir regulations, and the lighting system with an optimized design was installed. The key activities of this phase were as follows:<\/span><\/p>\n <\/p>\n \u00a0All stages of design and implementation were in accordance with the technical regulations of the Power Distribution Company, IEC standards, and HSE safety guidelines. High-level and site supervision was carried out by on-site project experts and in full coordination with the main contractor, Molavi Road and Building Company. Also, technical documents including As-built drawings, insulation test reports, and final operation manuals were delivered to the employer so that the ground for sustainable operation of the new facilities would be provided.<\/span><\/p>\n <\/p>\n The implementation of the project of relocating the interfering medium- and low-voltage networks of the Kachooei underpass was carried out by Pegah Energy Persian Company, relying on technical capability, execution experience, and utilizing specialized forces in the fields of electricity and civil. The project\u2019s execution structure was designed and implemented based on project management principles (PMBOK) and with an approach of continuous quality control and observance of HSE requirements.<\/span><\/p>\n <\/p>\n \u00a0The project was implemented with the participation and organization of a multidisciplinary team consisting of qualified and experienced personnel in various fields. This team included the following items:<\/span><\/p>\n <\/li>\n<\/ul>\n \u00a0In order to implement the operations precisely and safely, Pegah Energy Persian utilized a set of specialized machinery and modern execution equipment, which included the following:<\/span><\/p>\n <\/p>\n Pegah Energy Persian Company actively employed a comprehensive quality control and safety (HSE) system in this project. This system included assessment of execution risks, training of personnel, preparation of individual and environmental safety instructions, and continuous monitoring of processes. All excavation, cabling, and installation operations were performed in the presence of safety supervisors and using warning signs, safety tapes, and personal protective equipment (PPE).<\/span><\/p>\n The result of employing this system was execution without incident, with high quality, and in full compliance with technical and environmental requirements.<\/span><\/p>\n <\/p>\n \u00a0In this section, the financial resources, the method of allocating credits, and the managerial and execution structure of the project are examined. In the following, the details related to the method of financing, organizing the execution teams, and the managerial system of the project of relocating the overhead and underground medium-voltage network interfering with the construction of the Kachooei underpass bridge together with the construction of the street lighting network are explained.<\/span><\/p>\n \u00a0The project of relocating the medium- and low-voltage network interfering with the construction of the Kachooei underpass bridge was implemented with a budget of 4,100,000,000 rials and with Molavi Road and Building Company as employer representing Karaj Municipality.<\/span><\/p>\n The execution contract was awarded to Pegah Energy Persian Company, which, relying on its managerial, technical, and execution capability, assumed full responsibility for design, implementation, and supervision of the project\u2019s electrical operations. The financial resource management of this project was carried out based on the Earned Value Management (EVM) model so as to ensure precise cost control, prevention of financial deviations, and increased resource efficiency. All payments, procurement of equipment, and allocation of human resources were made within the framework of the approved plan and in accordance with the project\u2019s phased schedule.<\/span><\/p>\n <\/p>\n![\"Relocation](\"https:\/\/pegahgroup.com\/en\/wp-content\/uploads\/2025\/10\/20060810.jpg\")
1. Macro objectives and the necessity of implementing the project Relocation of medium-voltage network<\/b><\/h2>\n
\n<\/span> In general, the final objective of the project can be summarized in three key axes:<\/span><\/p>\n\n
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2. Scope of services and operational activities<\/b><\/h2>\n
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2.1. Phase One: Design and construction of the underground medium-voltage network\u00a0<\/b><\/h2>\n
\n<\/span> The implementation of this phase included the following items:<\/span><\/p>\n\n
\n<\/span> The result of this phase was the formation of an infrastructure that is stable and resistant to environmental and mechanical damage, which enabled safe and stable supply to the area\u2019s subscribers without dependence on overhead lines.<\/span><\/li>\n<\/ul>\n<\/h2>\n
2.2. Phase Two: Dismantling and removal of interfering overhead networks<\/b><\/h2>\n
\n<\/span> In addition to clearing the bridge route, planned removal of overhead networks led to improving traffic safety, reducing visual pollution, and enhancing the urban landscape within the project\u2019s area.<\/span><\/p>\n![\"Removal](\"https:\/\/pegahgroup.com\/en\/wp-content\/uploads\/2025\/10\/P4110685-scaled.jpg\")
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2.3. Phase Three: Construction of the street lighting network<\/b><\/h2>\n
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\n<\/span> The result of implementing this phase was increased safety of nighttime traffic, improved drivers\u2019 visibility, and reduced potential accidents in the underpass area and surrounding routes.<\/span><\/li>\n<\/ul>\n<\/h2>\n
2.4. Technical and supervisory requirements<\/b><\/h3>\n
3. Human resources and equipment fleet<\/b><\/h2>\n
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3.1. Specialized team and human resources<\/b><\/h3>\n
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\n<\/span> All members of the execution team operated under the direct supervision of the project control unit of Pegah Energy Persian and their performance was documented through daily coordination meetings and continuous reviews.<\/span><\/span><\/p>\n![\"Implementation](\"https:\/\/pegahgroup.com\/en\/wp-content\/uploads\/2025\/10\/group-steel-rod-tight-by-chain-lift-up-construction-site-scaled.jpg\")
3.2. Equipment fleet and execution machinery<\/b><\/h3>\n
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\n<\/span> All equipment used had valid technical health certificates, liability insurance, and valid calibration approvals, and their maintenance operations were performed in accordance with the company\u2019s internal instructions.<\/span><\/li>\n<\/ul>\n<\/h2>\n
3.3. Quality control and safety system (HSE Management System)<\/b><\/h3>\n
4. Financial resources and execution structure<\/b><\/h2>\n
![\"Conceptual](\"https:\/\/pegahgroup.com\/en\/wp-content\/uploads\/2025\/10\/20423-scaled.jpg\")
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4.1. Financial resources<\/b><\/h3>\n
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4.2. Project execution structure<\/b><\/h3>\n
![\"The](\"https:\/\/pegahgroup.com\/en\/wp-content\/uploads\/2025\/10\/lights-lifestyle-lifestyle-lights-pole-street-scaled.jpg\")
![\"Urban](\"https:\/\/pegahgroup.com\/en\/wp-content\/uploads\/2025\/10\/traffic-road-scaled-e1760789715835.jpg\")