Thermal Power Plant: Electrical infrastructure, Plant Utilities, Equipment’s sizing calculations, Evaluation of data-sheets, Heat and mass balance calculations.
COMBINED CYCLE POWER PLANT (CCPP):
Feasibility Study, Basic & Detail Engineering, Layout Drawings, Process & Instrumentation Diagrams, Design calculations, Procurement assistance, Turnkey Solutions.
- Extensive OEM experience for various General Electric (Frame 6B, 7EA, 7FA, 9E, and 9FA); Siemens, Mitsubishi, Alstom and Aero derivatives like LM6000, LM2500 Gas Turbine Generators up to 250 MW.
- Feasibility Study, Basic & Detail Engineering, Process & Instrumentation Diagrams, and Evaluation of data-sheets, Heat and mass balance calculations
Procurement assistance, Turnkey Solutions for Electrical infrastructure and Plant Utilities for Combined Cycle Power Plant
- Minor and major inspection of air-cooled and hydrogen cooled generators; Commissioning of various types of excitation systems.
- Modelling & data analysis of various combined cycle configurations like single shaft, multi shaft and Thermal plant equipment - HRSGs, Aux boilers, Coal fired units, Steam Turbines, Condensers, Cooling Towers, Gas compressors, Chillers, Heat Exchangers, Major Fans, pumps etc.
- Routine, Preventive and Emergency maintenance.
- Design and implement Standard operating procedure (SOP) to meet any contingencies like grid collapse and black out
- Repair or refurbishment of existing generators, replacement of AVR/Excitation system of any major component of Generators.
- Generator modelling, Electrical & Mechanical stability of Generator, Grid Parallel operations & islanding
- Rotor Services : Brushless exciter test, inspection and complete overhaul, Field ground detector troubleshooting for both RF and Optical systems, Retaining Ring removal & inspections, Non-destructive testing (NDT) of retaining rings, Collector ring machining, Complete rotor rewind, Post-rewind high speed balancing, Radial hydrogen seal replacement
- Stator Services: End winding resonance detection and repairs “bump test”, Connection ring / parallel ring re-blocking & re-tying, End winding re-blocking & re-tying based on bump test & visual inspection results, End winding stiffening treatment, Corona and partial discharge activity abatement, Stator re-wedging, Flux probe installation, Dry ice “CO2” blasting excessively contaminated stators, High voltage bushing replacement, Temporary High voltage bushing & terminal plate leak repairs (“damming”), Replacement of stand-off insulators, Stator core iron repairs
- Stator Testing: Insulation resistance & polarization index (“megger & P.I.”), DC Leakage test and Hi Pot, ELCID testing for core faults, Digital wedge mapping Ripple / PSDS spring depth gage testing for wedge tightness, DC resistance testing of each phase, Bump test / modal analysis of end windings & connection rings, Corona camera, Doble / Tan-Delta / Power Factor testing, Thermographic detection of high resistance connections
- Westinghouse/MHI inner-cooled unit Testing: Transposition Testing, Tube to tube resistance test, Tube to copper resistance test, Core through bolt & building bolt torque checks & re-tightening, Megger of through bolts, Parallel ring flow testing, High voltage bushing replacement, Temporary High voltage bushing & terminal plate leak repairs (“damming”), Replacement of stand-off insulators, Stator core iron repairs,
- Rotor Testing : Insulation resistance & polarization index (“megger & P.I.”), DC resistance testing, AC impedance test, Pole balance test, Recurring Surge Oscillography (RSO) test for shorted turns, Hydrogen seal pressure test for leaks, Borescope visual inspection,
- Additional Capabilities : Consultant services, Root cause analysis