NTPC Ltd- Koldam
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Electrical and Instrumentation Works of Permanent Water Supply Scheme for NTPC Koldam HPES Township

  • Client: NTPC Ltd- Koldam
  • Industry: Power Generation

Project Overview

The project involves the execution of comprehensive Electrical and Instrumentation Works for the Permanent Water Supply Scheme at NTPC Koldam Township. The scope of work includes the supply, laying, and commissioning of power and control cables, installation of motor starter panels, LT distribution boards, lighting systems, and instrumentation for monitoring flow, level, and pressure in multiple pump houses. The project is located in Koldam, Himachal Pradesh, and has an approximate cost of 1.65 crores.

Detailed Scope of Work

Power Cable Supply and Laying

  • Supply and laying of 1.1 KV Grade Extruded XLPE Insulated Power Cables (4Cx120 sq. mm and 4Cx35 sq. mm Aluminium) conforming to IS-7098 (Part-1: 1988).
  • Total length of cables to be supplied: 2500 meters (4Cx120 sq. mm) and 1250 meters (4Cx35 sq. mm).
  • Cable laying in existing/new cable trays, trenches, ducts, conduits, or on the surface as per site conditions.

Control and Instrumentation Cable Supply and Laying

  • Supply and laying of control and instrumentation cables for various pump houses.
  • Use of screened type copper cables with a minimum of 25-30% spare cores.

Motor Starter Panels and LT Distribution Boards

  • Design, manufacture, supply, erection, testing, and commissioning of Type-A, Type-B, and Type-C Motor Starter Panels.
  • Supply, erection, and commissioning of Type-A, Type-B, and Type-C LT Distribution Boards (Indoor and Outdoor).

Lighting, Outlet & Earthing Systems

  • Supply and installation of LED lights, ceiling fans, exhaust fans, receptacles, and MCB DBs in pump houses.
  • Earthing and lightning protection systems, including chemical earthing pits and lightning arrestors.

Instrumentation Works

  • Supply, Installation of level transmitters, digital level indicators, float switches, flow meters, and pressure gauges in pump houses.
  • Automation and interlocking of pumps based on tank levels for efficient water supply management.
Mandatory Spares and Trial Operation
  • Supply of mandatory spares for all equipment.
  • Trial operation of the integrated system for one month prior to handover to NTPC.

Our Projects

Challenges and Solutions

Hilly Terrain and Accessibility
  • Challenge: The project site is located in a hilly area, making accessibility and transportation of materials challenging.
  • Solution: Employed specialized all-terrain vehicles and ensured proper planning for material transportation. Conducted site visits to understand the terrain and plan logistics accordingly.
Coordination with Civil Works
  • Challenge: Overlapping and inter-related works with the civil agency required meticulous coordination.
  • Solution: Established regular coordination meetings with the civil agency to synchronize activities and resolve any issues promptly. Ensured that all field instruments and cable entry points were installed as per the civil agency’s requirements.
Safety and Environmental Concerns
  • Challenge: Ensuring safety in a hilly terrain with potential environmental impacts.
  • Solution: Implemented stringent safety protocols, including the use of high-quality safety gear and adherence to NTPC’s safety regulations. Conducted regular safety audits and training for workers. Minimized environmental impact by following best practices for excavation and cable laying.
Quality Assurance
  • Challenge:: Ensuring the quality of materials and workmanship in a remote location.
  • Solution: Conducted pre-dispatch inspections (PDI) for all critical components. Submitted manufacturing quality plans (MQP) and field quality plans (FQP) for NTPC’s approval. Ensured that all materials and components were sourced from reputable manufacturers and tested at independent NABL accredited labs.
Quality Assurance
  • Challenge:: Ensuring the quality of materials and workmanship in a remote location.
  • Solution: Conducted pre-dispatch inspections (PDI) for all critical components. Submitted manufacturing quality plans (MQP) and field quality plans (FQP) for NTPC’s approval. Ensured that all materials and components were sourced from reputable manufacturers and tested at independent NABL accredited labs.

Conclusion

The project at NTPC Koldam HEPS is a testament to our commitment to delivering high-quality electrical and instrumentation works in challenging environments. By overcoming logistical, coordination, safety, and quality assurance challenges, we have successfully executed this project, ensuring a reliable and efficient permanent water supply system for the township. Our dedication to safety, quality, and timely delivery has made this project a benchmark for future endeavors in similar terrains and conditions.