High-Efficiency LNG-fired Thermal Power Station
Short-term efforts to reduce fuel consumption
Short-term, medium-term, and long-term measures are being taken for facilities in order to improve the thermal efficiency and operation rate at thermal power stations. As a short-term measure, the commercial operation of Kawasaki Thermal Power Station Group 2, Units 2 and 3 (output: 0.71 million kW each), which are economically superior, state-of-the-art, high-efficiency LNG-fired thermal power generation facilities (MACC II), commenced a year ahead of schedule.
Challenges to reducing construction period
In order to greatly reduce the construction period at Kawasaki Thermal Power Station, comprehensive adjustments were made to the facilities' design, manufacture, installation, and other processes. Efforts included the following:
- Improving efficiency of equipment delivery process by prioritizing and moving up date of overhead crane deployment process
- Assembly of exhaust heat recovery boiler at factory (utilization of modular construction), single delivery by marine transport, followed by installation
- Greater subdivision of civil engineering construction areas, and commencement of mechanical work sequentially, starting from partially completed areas
- During transmission line construction, adoption of technique to lay 2,000-meter-class long cables, thus reducing cable connection work
Effect of reducing construction period
As a result of meeting these challenges, the Kawasaki Thermal Power Station started commercial operations about one year ahead of schedule.
- Group 2, Unit 2, January 2016 (Finished about 6 months earlier than original plan.)
- Group 2, Unit 3, June 2016 (Finished about 1 year ahead of original plan.)
By introducing state-of-the-art, high-efficiency LNG-fired thermal power generation facilities (MACC II), it is estimated that fuel and other running costs can be reduced by about 17 billion yen/year per unit and CO2 emissions can be reduced by about 700,000 tons/year.