The misalignment of turbomachine train rotors is the second most common malfunction of turbomachineries (the first most common malfunction is unbalance). Turbomachine alignment procedures have been involving quite sophisticated laser-optic instrumentations.
Technical notes on gas turbine starting device, starting, reference check, component life, inspection, sizing and speed range selection are discussed. The main concerns are gas turbine arrangement and operation solution to obtain optimum fuel consumption, low emission and reasonable reliability.
Here's a summary of a paper presented by Steve Ingistov, PE, BP/WCC and Mustapha Chaker of Bechtel Corporation about the Watson Cogeneration Company (WCC) plant at the ASME/IGTI conference in 2011. The plant was fully commissioned during the first part of 1988, consists of four GE 7EA gas turbines, two Dresser-Rand Steam Turbines and four dualpressure heat recovery steam generators.
Turbomachine design and arrangement is often complex and optimization must be made between the mechanical requirements, electrical specification, auxiliary equipment design, operation, reliability, commercial and maintenance.
Future LNG plants would be "all aero-derivative" driven or "all electric" driven. Practical notes and latest developments on LNG refrigeration compressor train design, driver selection and optimization are discussed. Useful notes and new technologies on "all electric" solution and associated power plant are also described.
A comprehensive torsional analysis should be carried out for a complex compressor string. Various modes of torsional vibrations should be extracted and analyzed. Complicated combinations of effects in various steady state and transient operating cases should be considered. Complete practical notes and latest achievements on torsional design, train arrangement, component selection, coupling sizing and vibration studies are described.