Report on the EPRI Sponsored Steam Power Plant Workshop

摘要

The primary technological obstacles to the utilization of steam conditions beyond the 2400 to 3500 psig, 1000 exp 0 F/1000 exp 0 F level are coal ash liquid-phase corrosion in the steam generator, premature failure from high temperature creep, and lack of facilities and equipment for fabricating the pressure vessels and rotors of steam turbines in the sizes required, even with currently available higher temperature materials. In addition, the operating economics do not presently justify higher steam conditions. Fossil-fueled units will be utilized primarily for cycling applications. However, an inability to meet the scheduled commercial operation dates for nuclear plants, due to licensing and construction permit delays or other setbacks, would necessitate the continued installation of base-loaded fossil-fueled units. The workshop participants identified the specific areas, primarily materials research, where EPRI funding is needed and which often relate to other fossil-fueled generating concepts as well as steam power plants. Maintenance of and improvement in unit reliability was also stressed.