| 摘要 |
PURPOSE:To reduce stress concentration for a header of a main steam piping and improve durability of piping by providing a pipe arangement part between a main steam piping and a header part, which is located at forward of a turbine inlet part of a main steam piping in a boiling water reactor type electric power plant. CONSTITUTION:At a header part of a main steam piping 1 which guides vaper produced by a nuclear reactor to a turbine, a piping 5 is individually jointed each piping of a piping 1, a header 2 is jointed with the end part of the piping 5. Herewith, the connecting part for both the main steam piping 1 and the header 2 including for other piping, are formed T-shape. Therefore, the excessive stress concentration can be avoided, accordingly, durability and soundness of the piping can be improved. |
