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During the startup of the triple-pressure HRSGs, plant staff noticed steam coming from the stack and a discrepancy between feedwater and steam flows. On shutting down the unit a T23 superheater tube was found with a complete circumferential failure. The failed tube was removed and the bore was plugged with some difficulty due to poor access and the uncommon material.
As combined cycle gas turbine plants are called upon to play a larger and more flexible role in the generation mix, it’s important to schedule a comprehensive assessment of major components at key intervals to ensure reliable operation.
Tetra Engineering is a small company working in the power generation sector. We specialise in providing engineering and technical support to owners and operators of CCGT power plants, as well as other thermal plants. We have an office near Nice in France and our headquarters is in Connecticut, USA. We support projects worldwide and this includes hands-on fieldwork and back office engineering analysis...
Two of the most common issues that power plant owners and operators face in the HP Evaporator section areUnder-deposit Corrosion (UDC) andCorrosion-Fatigue. In this short article we will cover UDC and what key actions should be taken to predict and prevent costly forced outages.
Tetra Engineering is presenting two papers at the 2020 ASME POWER Conferencewhich was scheduled to take place at the Disneyland Hotel in Anaheim, California August 3-6 but will now be a virtual conference online this year. The second paper has been written in collaboration with our partners atTG Advisers, Inc.
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