| 摘要 |
PROBLEM TO BE SOLVED: To provide a plant (boiling water reactor plant) with a piping having a branch part, capable of further reducing a pressure variation caused by acoustic resonance. SOLUTION: The BWR plant 1 includes: a main steam pipe 10 of supplying steam from a reactor pressure vessel to a turbine. In the BWR plant 1, branch pipes 12A and 12B having an identical length to each other and being adjacent to each other are connected to the main steam pipe 10. A safety valve for allowing steam to escape 13A is attached to the branch pipe 12A. A safety valve for allowing steam to escape 13B is attached to the branch pipe 12B. A distance between the branch pipes being adjacent to each other is in a range from (2×n-1.5) to (2×n-0.5) times the length of the branch pipes (n is a counting number). An acoustic pressure can be suppressed because pressure variations generated in the two branch pipes cancel each other. COPYRIGHT: (C)2011,JPO&INPIT |
