Heat Recovery Steam Generators
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The need for cleaner power, with shorter permit-to-start-up periods, has resulted in more gas turbines (GT) being installed in the U.S., as elsewhere in the world. Adding a Heat Recovery Steam Generator (HRSG) to the GT to capture the heat from the exhaust, and use it for generating steam to power a steam turbine, results in a much more efficient Combined Cycle (CC) power plant. Alstom Power has long been a leader in the engineering and manufacturing of all of this equipment and APComPower has been the installer of a number of these HRSG's in recent years. It is APComPower's 75 years of experience of erecting and repairing all types and sizes of utility and industrial boilers that has provided APComPower with the expertise in rigging, welding, and managing craft labor and subcontractors necessary to install and repair HRSG's, as well.
Our construction engineering, welding and quality assurance groups, with years of boiler experience, provide our field personnel with the necessary engineering and procedural support to assure a quality product is provided to our customers in a timely manner. And our ASME and National Board Code stamps, and ISO Quality Program, attest to the high quality that APComPower provides.
In addition to the installation of the HRSG's, APComPower has the capability of repairing, rehabilitating or modifying HRSG's. As an industry leader in providing aftermarket services, APComPower's capability extends beyond the OEM fleet of Alstom designed HRSG's to include: Nooter/Eriksen, Vogt, Deltak and others.
Examples of aftermarket work on HRSG's include:
- Replacing drums, headers, harps, tubes, piping and valves
- Making repairs to grade 91 headers and tubes
(Alstom was one of the developers of grade 91 materials in the 1970's) - Installing tube shields
- Reworking attemporator, baffling and drain systems
- Reworking insulation and liner plates
- General maintenance