NUCLEAR POWER GENERATION FACILITY

To provide a nuclear power generation facility capable of releasing steam to the outside of the building in a case of piping rupture while suppressing an adverse effect on equipment of other systems.SOLUTION: A nuclear power generation system 100 is equipped with a main steam tunnel forming section 71 that forms a main steam tunnel chamber 80 in which main steam piping 50 is installed. The main steam tunnel forming section 71 comprises: a piping storage section 71a that forms a piping housing room 81 which communicates with a main steam piping chamber 40 and through which the main steam piping 50 passes; a first flow channel forming section 71c that forms a flow channel 82 extending upward or sideward from the piping housing room 81; a first blowout panel 91 that blocks a first steam outlet section 71d provided in the first flow channel forming section 71c; and a partition wall 71b that is provided on the side of a turbine building 6 and partitions the main steam tunnel chamber 80 in an airtight manner. The main steam piping 50 is laid out to penetrate the partition wall 71b and to be led into the turbine building 6.SELECTED DRAWING: Figure 1 【課題】他系統の機械に対する悪影響を抑制しつつ、配管破断時に蒸気を建屋外部へ逃がすことのできる原子力発電設備を提供する。【解決手段】原子力発電設備１００は、主蒸気配管５０が配設される主蒸気トンネル室８０を形成する主蒸気トンネル形成部７１を備える。主蒸気トンネル形成部７１は、主蒸気配管室４０に連通し主蒸気配管５０が通る配管収容室８１を形成する配管収容部７１ａと、配管収容室８１から上方または側方に延在する流路８２を形成する第１流路形成部７１ｃと、第１流路形成部７１ｃに設けられる第１蒸気出口部７１ｄを塞ぐ第１ブローアウトパネル９１と、タービン建屋６側に設けられ主蒸気トンネル室８０を気密に仕切る仕切壁７１ｂと、を有する。主蒸気配管５０は、仕切壁７１ｂを貫通してタービン建屋６内に導かれるように配設される。【選択図】図１