This project involved the replacement of a technically demanding superheater. The foundation for its successful execution was a detailed project plan developed well in advance. The work required exceptionally precise preparation, as the superheater coil bundles were made of heat‑resistant chromium‑molybdenum steel and required specific heat‑treatment procedures along with meeting stringent welding requirements.
Working under severely restricted space conditions, our team carried out the removal and installation of the coil bundles, produced X‑ray‑quality welds on tube bundles and membrane walls, and performed regular intermediate inspections using radiographic testing. The project concluded with a successfully passed hydrostatic boiler pressure test at 78 bar, serving as proof of the high execution quality.
The superheater replacement was performed in parallel with extensive scheduled outage and overhaul activities, which were also part of our scope of supply and services. These included comprehensive inspection and maintenance work in and around the boiler, as well as on all operationally relevant components. At peak times, more than 20 skilled specialists were working on site simultaneously, requiring highly coordinated planning, scheduling, and logistics.