Natural Gas Power Plant
Natural Gas Power Plant Construction – Scope of Work
Natural gas power plants are among the cleanest and most efficient forms of fossil-fuel-based electricity generation. They use gas turbines, steam turbines (in combined-cycle), or reciprocating engines depending on the setup. Here’s a comprehensive scope of work:
1. Site Development & Civil Works
- Land grading and compaction
- Construction of access roads and plant boundary walls
- Foundations for turbines, generators, tanks, and buildings
- Control building, pump house, warehouse, and administrative block construction
- Trench excavation for piping, cabling, and drainage systems
2. Gas Turbine Generator System
- Erection of gas turbines and associated skids
- Generator installation, alignment, and coupling
- Installation of lube oil systems, exhaust stacks, and air intake systems
- Inlet air filtration and cooling system setup
3. Heat Recovery Steam Generator (HRSG) & Steam Cycle (for Combined Cycle Plants)
- HRSG installation with economizer, evaporator, superheater modules
- Steam turbine erection with auxiliary systems
- Condenser installation, cooling water connection
- Steam header piping, valves, and accessories
4. Fuel Gas Supply System
- Gas receiving station (GRS) installation
- Piping for natural gas fuel supply, filtration, and pressure regulation
- Emergency shut-off valves, safety relief valves
- Pig launcher/receiver (if required)
5. Balance of Plant (BoP) Equipment Installation
- Cooling towers or air-cooled condenser systems
- Installation of pumps (condensate, feedwater, fire water, etc.)
- Air compressors, instrument air systems
- Water treatment and demineralization plants
- HVAC system installation for buildings and enclosures
6. Electrical Systems & Power Evacuation
- Main power transformers and switchyard construction (132/220/400 kV)
- 11kV/33kV switchgear, control panels, UPS systems
- Cable laying (LV, MV, HV) and earthing network
- Integration with grid via transmission lines or substations
7. Piping & Instrumentation
- High-pressure piping for steam, feedwater, condensate, and cooling circuits
- Instrument air and nitrogen lines
- Firefighting and water supply pipelines
- Control valves, flow meters, gauges, transmitters integration
8. DCS/SCADA & Control Systems
- Distributed Control System (DCS) setup for plant automation
- Instrument installation (pressure, temperature, flow, vibration sensors)
- SCADA system for monitoring and reporting
- Cybersecurity setup for digital control systems
9. Testing, Pre-Commissioning & Commissioning
- Hydrostatic testing of piping networks
- Loop checking and calibration of instruments
- Turbine roll test, performance and load testing
- Grid synchronization and trial operation under load
10. Training & Handover
- O&M training for client personnel
- Preparation of O&M manuals and as-built documentation
- Spare parts and tools handover
- 12-24 months of performance monitoring (optional)
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