# DURGA INFRASTRUCTURE ENGINEERING PRIVATE LIMITED (DIEPL) *Registered Address: At Jharitand Inderwa Koderma, Koderma Road, Jharkhand - 825410* *GSTIN: 20AAMCD5728M1ZF | Constitution: Private Limited Company* --- ## SECTION 1: CORPORATE OVERVIEW & INTRODUCTION ### 1.1 Executive Summary Durga Infrastructure Engineering Private Limited (DIEPL) is a professionally managed engineering, procurement, and construction contracting firm specializing in Extra-High-Voltage (EHV) substation switchyards, electrical grid networks, railway traction electrification, and associated heavy civil/mechanical works. Headquartered in Koderma, Jharkhand, we deliver high-reliability electrical grids up to 765kV capacity under strict technical compliance. ### 1.2 The Promoters & Management Strength DIEPL is backed by seasoned promoters and technical professionals with extensive industry experience and exposure. The promoters and technical management of Durga Infrastructure Engineering Pvt Ltd possess decades of collective industry experience through successful execution of EHV transmission lines, substations, railway electrification, and high-tension utility projects under associated organizations, including **Durga Construction Company (DCC)**. * **Experienced Promoter Backing**: The promoters have been actively associated with the execution of various heavy infrastructure works through ongoing industry operations and associated organizations, ensuring seamless technical capability, robust capital assets, and established client relationships. * **Core Execution Mandate**: DIEPL is firmly committed to delivering quality-driven, safe, and timely infrastructure solutions across the power and construction sectors, raising national benchmarks for contracting efficiency. --- ## SECTION 2: CORE AREAS OF TECHNICAL EXPERTISE DIEPL operates across five primary engineering domains, with certified credentials and experienced project crews: 1. **EHV Substation & Switchyard Works**: * Rigging, mechanical assembly, and precision alignment of EHV utility power transformers and shunt reactors up to 765kV. * Erection of outdoor Air-Insulated Switchyards (AIS) and Gas-Insulated Switchyards (GIS) structures, circuit breakers, Current/Potential Transformers (CT/PT), busbars, and insulator alignments. 2. **EHV Transmission Line Works**: * Complete tower foundations casting, structural steel tower assembly, tower rigging, conductor stringing, sagging, and line terminations up to 765kV systems. 3. **Structure Erection & Heavy Rigging**: * Heavy mechanical staging and erection of structural steel columns, gantry beams, lightning protection towers, and switchyard gantries under tight site tolerances. 4. **Civil & Electrical Grid Infrastructure**: * Fabrication and welding of sub-1 ohm switchyard safety grounding grids (MS earthing mats). * Civil works including transformer RCC plinths, cable trench networks, firewall masonry barriers, and utility control rooms. 5. **Cabling, Glanding & Control Panel Terminations**: * Laying, dressing, and routing of armored EHV Power, LT, and multi-core control cables. * High-reliability control cable glanding, wire tagging, and control room CRP Panel terminations. --- ## SECTION 3: VISION, MISSION, & OPERATIONS PHILOSOPHY ### 3.1 Corporate Vision To establish Durga Infrastructure Engineering Private Limited as a national benchmark in EHV electrical contracting, recognized for executing complex substation, transmission, and railway traction projects safely, reliably, and within record timelines. ### 3.2 Corporate Mission To engineer and deliver utility-grade power infrastructure that meets international quality standards. We aim to continually raise the bar for safety and technical precision while contributing to the nation's high-voltage energy security. ### 3.3 The Four Pillars of Execution Every project executed by DIEPL is guided by four core operational principles: * **Quality Work**: Delivering robust, grid-synchronized electrical networks built strictly to approved raw materials and wire gauge specifications. * **Timely Completion**: Rapid crew mobilization and flawless critical-path site management to ensure project handovers within strict client timelines. * **Safety First**: Maintaining a strict zero-harm culture with daily toolbox safety briefings, comprehensive risk audits, and absolute compliance with QHSE standards. * **Client Satisfaction**: Nurturing long-term relationships through absolute business transparency, ethical cost estimations, and premium execution quality. --- ## SECTION 4: HEALTH, SAFETY, & SOCIAL RESPONSIBILITY ### 4.1 QHSE Policy Statement At DIEPL, Quality, Occupational Health, Safety, and Environmental protection are fundamental pillars integral to our core business of construction management. In pursuit of site excellence and worker protection, DIEPL is rigorously committed to: * Implementing comprehensive accident prevention protocols and mandatory Personal Protective Equipment (PPE) compliance. * Organizing daily site safety toolbox briefings and electrical risk drills prior to every EHV shift. * Minimizing ecological footprints by practicing sustainable soil excavation, waste control, and minimal vegetation clearance. ### 4.2 Corporate Social Responsibility (CSR) We believe in fostering a comprehensive culture of caring and mutual trust. DIEPL adds measurable value to the community by: * Training local youth in technical rigging, steel welding, and utility-grade wireman skills. * Assisting in national disaster recovery projects and electrical grid reconstruction during emergencies. * Focus on environmental preservation and native tree plantation near switchyard boundaries. --- ## SECTION 5: TECHNICAL INVENTORY (TOOLS & PLANTS) To support rapid mobilization, DIEPL maintains an extensive, privately owned inventory of heavy machinery, testing gear, and tools: | # | Tool & Equipment Description | Quantity | Operational Purpose | |---|---|---|---| | 1 | Rectifier Welding Machines (440V) | 4 Nos | Heavy structural steel welding | | 2 | Standard Welding Machines (220V) | 4 Nos | Grid earthing flat joints welding | | 3 | Heavy Duty Drill Machines | 4 Nos | Structural column bolting | | 4 | Magnetic Core Drill Machine | 1 No | High-precision steel plates piercing | | 5 | Insulation Tester (Megger - 1000V) | 1 No | Cable and transformer testing | | 6 | Digital Multimeters | 2 Nos | Control panel circuit ring testing | | 7 | Heavy Angle Grinders | 3 Nos | Structural steel cutting and grinding | | 8 | Transition Testers | 2 Nos | High-tension busbar resistance testing | | 9 | Mechanical Steel Rod Cutters | 3 Nos | Cable tray and steel rod shearing | | 10| Specialized Clamping Tools | 12 Nos | Busbar conductor tensioning | | 11| Heavy Spanner & Socket Sets | 14 Sets | Gantry tower structural bolting | | 12| High-Capacity D-Shackle & Belts | 18 Sets | Heavy transformer rigging & lifting | | 13| Site Supervision & Logistics Cars | 4 Nos | Crew mobilization & site supervision | | 14| Site Logistics Motorcycles | 6 Nos | Fast on-site tools delivery | | 15| Automatic Steel Bar Benders/Cutters| 2 Nos | Plinths & foundations rebar cage prep | --- ## SECTION 6: CONTRACTS BOARD & RECORD TIMELINES DIEPL's track record is structured to reflect direct corporate projects alongside our associated promoters' management experience. ### 6.1 Direct Infrastructure Projects (DIEPL) *Contracts directly awarded to and under active execution by Durga Infrastructure Engineering Private Limited:* * **Client**: **TEECL / AESL (Adani Energy Solutions Limited)** * **Scope**: 220kV/400kV Substation Switchyard Erection & High-Voltage Transmission Line stringing works in Rewa, Madhya Pradesh. * **Status**: **Ongoing / Under Execution** * **Value**: **Rs. 1,25,00,000 (Rs. 1.25 Crore)** ### 6.2 Legacy & Associated Management Experience *Contracts successfully executed under our associated organization and technical management experience (Durga Construction Company - DCC) between 2012 and 2025:* | Client Organization | Scope of Project & Voltages | Contract Value | Status | Executed By | |---|---|---|---|---| | **GE T&D India Limited** *(formerly ALSTOM)* | EHV switchyard mechanical erection & mat grounding | **Rs. 98,34,724** | Completed | DCC* | | **Gepdec Infratech Limited** | 400/220/132kV AIS substation structural & cabling works | **Rs. 90,60,000** | Ongoing | DCC* | | **ARSS Infrastructure Projects** | 132/25kV Traction Substation (TSS) mechanical erection | **Rs. 65,00,000** | Ongoing | DCC* | | **KEC International Limited** | 132/25kV Traction power substation erection T&C support | **Rs. 61,50,000** | Completed | DCC* | | **Precise Powertech & Engineers** | 400/220kV Substation steel gantry columns rigging | **Rs. 12,31,177** | Completed | DCC* | | **Uttar Pradesh Power Corp. (UPPCL)** | Utility electrical maintenance & auxiliary bay renovations | **Rs. 11,75,020** | Completed | DCC* | | **Shyam Electricals Limited** | Auxiliary switchyard erection & control cable terminations | **Rs. 11,26,800** | Completed | DCC* | | **B.B.S. Construction Company** | Substation safety grounding mat welding & cable trenching | **Rs. 8,46,800** | Completed | DCC* | *\*Note: Legacy and associated experience credentials represent high-voltage contracts successfully executed under our associated organization and technical management experience (Durga Construction Company - DCC).* --- ## SECTION 7: KEY TECHNICAL CASE STUDIES ### Case Study 1: 400/220kV Substation Rigging & Erection * **Management Experience (DCC/DIEPL)** * **Technical Challenge**: Executing structural erection and heavy mechanical leveling of steel gantries, 400kV isolators, and high-tension CRP control panels under highly restricted switchyard spatial conditions. * **Solution**: Developed a critical-path rigging sequence utilizing high-capacity mobile crane teams to perform safe gantry columns lifts. Precision mechanical staging and leveling ensured that structural tolerances remained strictly within the millimetric margins requested by the client, with zero site incidents. ### Case Study 2: 132/25kV Traction Substation Grounding Sync * **Management Experience (DCC/DIEPL)** * **Technical Challenge**: Fabricating and welding switchyard grounding grids (MS earthing mats) and pulling control cables for traction substations to deliver a synchronized grid with measured earth resistance strictly under 0.5 ohms. * **Solution**: Laid over 10,000 meters of control and power cabling in sand-cushioned civil trenches, performed expert multi-core glanding/terminations, and lap-welded massive 75x10mm MS flat grounding matrices. Delivered a flawlessly grounded traction substation certified by safety inspectors.