部門設立30周年記念出版: Vol.4沸騰水型原子炉

（原子炉定格熱出力一定運転と高精度流量計によるアップレートと課題）

抄録

Under the basic concept of maximizing the use of existing nuclear power plants on the premise of maintaining and improving safety, advanced utilization of light water reactors, such as power uprate to make use of reactor thermal power output maximize and increase electrical power output, has already implemented mainly in Europe and the United States. Compared to the construction of new nuclear power plants, the less risk exists in terms of licensing and investment issues, and not-a-few countries are now implementing reactor power uprate as an effective means of reducing greenhouse gas emissions and providing energy security.

There are two types of increasing power output to gain larger electric power more efficiently, which have been carried out to date: one is to increase electric power output without changing equipment and rated thermal power generated by fission in a core, which is called as the constant-rated reactor thermal power operation; the other is to uprate the licensed rated-thermal-power of the reactor with changing equipment to achieve a large increase in electric power output. Current presentation outlines increase in electric power output by constant-rated reactor thermal power operation and by uprate.