Tank
Constructing PWR plants - Primary equipment

The reactor vessel contains the reactor core. It is an essential part of the second safety barrier [BN 3 820].

Located in the central part of the reactor building, the :

• contains the internal equipment that holds the fuel assemblies in position, guides the control clusters and ensures water circulation in the core;

• is fitted with a cover that is opened by a fully automatic machine, enabling used fuel assemblies to be replaced by new ones during the reloading operation.

The material of the cylindrical part of the reactor...