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2018 CPS Piping Services for CCGT Plants Tetra Engineering Group, Inc.has assistedmany owners of natural gas-fired combined cycle plants with the development of effective Covered Piping Systems (CPS) Programs, Inspection Plans, Pipe Stress Analysis and Field NDT since the ASME adopted the new Code requirements for piping O&M in Section B31.1 Chapter VII in 2007. Tetra has developedsuch programsfor CCGT owners in the US, Canada, Mexico and the Middle East. They have been prepared for 'bubble' 2x1 design with F-class gas turbines as well as modern 1x1 fast-start units, plants with aeroderivative GTs and once-through steam generators as well as smaller units operated by municipal power companies, some of which are in cogeneration service. Based on the latest B31.1 requirements, the CPS Program Plan is tailored to meet your requirements especially regarding the scheduling of NDT inspections over multiple outages to distribute costs and meet outage budget constraints Covered Piping systems O&M Programs for CCGT Plants
A unique opportunity to update your knowledge on your power plant’s Capital Equipment. Hear from industry-leading experts on Gas Turbines, HRSGs, Fluidised Bed Boilers and Steam Turbines. Sharpen your skills with the latest information on inspecting, analysing and maintaining your critical power generation assets.
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Thermohydraulic simulations can provide detailed heat recovery steam generator (HRSG) data to help determine the root cause of failures, predict the degree of wear from various mechanisms, and assess the overall thermal efficiency of the boilers. In this article, the results obtained from three case studies are presented to show the real-world benefits obtained through thermodynamic simulations.
Tetra Engineering and KED are pleased to announce the release of the Power Plant Simulator & Designer Package (PPSD) Version 19.1. PPSD is a state of the art design and analysis/troubleshooting package for nearly any type of thermal power plant. It includes the capability for both steady state and dynamic simulation and analysis and is developed by KED in Germany.
Waterside Deposits in evaporator tubes have been an issue in steam generators as long as boilers have been used. Substantial experience in deposit formation and management has been gained in conventional goal and oil/gas boilers over time. The role of boiling modes in the steam generator tubes is very critical to areas of deposit formation.
Normal boiler and Heat Recovery Steam Generator Operation have required a complete purge of the boiler by fresh air before startup firing to remove potentially explosive fuels and other substances from the boiler/HRSG. For power plants in daily two-shift cycling (or more frequent starts) this not only adds time to the startup sequence but can impose significant thermal stresses on hot components exposed to cooler purge air.
Peter Jackson, President of Tetra Engineering Group was invited to present Tetra's experience on Purge Credit implementations at the 501F User Conference this February (2019).Combined cycle power plants use fuels and other materials that can cause fires or explosions in the combustion turbine, ducting, or heat recovery steam generator. Purging that equipment with ambient air to displace residual combustible gases before starting is a normal safety practice. But when plants are cycled, the disadvantages of purging often outweigh the advantages.
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