Peripheral fire extinguishing system of nuclear power station

The invention discloses a nuclear power station peripheral fire fighting system which comprises a fire fighting water production subsystem, a main equipment fire fighting water distribution subsystem and a plant fire fighting water distribution subsystem. The fire-fighting water production subsystem is sequentially communicated with the main equipment fire-fighting water distribution subsystem and the plant fire-fighting water distribution subsystem through a connecting pipeline; the fire-fighting water production subsystem comprises at least two water suction pump groups, and water outlets of the water suction pump groups are communicated through a first connecting pipeline; the main equipment fire-fighting water distribution subsystem comprises steam turbine fire-fighting loops which are connected in parallel, and a water inlet of each steam turbine fire-fighting loop is communicated with the fire-fighting water production subsystem through a second connecting pipeline. The water outlets of the multiple gro