On January 11, a ceremony to commemorate the setting of the HRSG (Heat recovery steam generator) frame was held at the Fukahori Module Assembly Plant at MHI's Nagasaki Shipyard & Machinery Works. This frame is being built for the Tokyo Electric Power Company's (TEPCO) Kawasaki Power Station Group 1 (No.1-3) as No.3 HRSG. This Group is a 3-on-1 configuration with two gas turbine connected to their respective HRSGs and with the steam from HRSGs supplied a steam turbine.
The boiler module assembly is the 16th such construction, since the boiler for the Medina Yanbu of Saudi Arabia back in 1980.
This time, the HRSG plans to enhance inbuilt components to bring it closer to completion. The mass of the module is the greatest yet, at 3,800 tons.
Out of consideration for the confined space, which is characteristic of urban-style power plants, the GT exhaust duct, which is located between the turbine building and the HRSG, is also made by modules to avoid construction from becoming congested on the cramped site.
Modules for the remaining two HRSGs will be transported to the field in Kawasaki as they are completed, and on-site construction will commence by December 2006. After operational tests, commercial operations are expected to commence in around a year, based on the customer power supply plan. The plant will be finally completed in July, 2009. On completion, it will become a 1,500 MW power station, and aim for the world's most efficient power generation.
At the Nagasaki plant, we will make use of the Fukahori Module Assembly Plant as it approaches completion, to continue responding to our customers' needs into the future.