The final module of the passive water tank has been installed within the reactor building of unit 4 at the Xudabao nuclear power plant in China’s Liaoning Province, China National Nuclear Corporation announced.

In the event of leakage in the primary circuit, the passive heat removal system assures the transition of steam generators to operation in the mode of condensation of the primary circuit steam. As a result, the condensate from steam generators arrives at the core providing additional cooling.

The passive water tank of the reactor building of Xudabao unit 4 consists of four modules, each of which is composed of reinforced concrete slabs, stainless steel cladding, penetrations, heat exchangers, and wall reinforcements. The hoisting weight of a single water tank module is 325.9 tonnes. The completed tank features 33 penetrations and 16 heat exchangers arranged within it.

Read more in World Nuclear News here.

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