Nuclear reactor safety casing

Abstract

A reactor containment vessel of a boiling water reactor configured to contain a reactor pressure vessel. The reactor pressure vessel is connected to at least one main steam pipe which penetrates the reactor containment vessel at a main-steam-line penetration point. The main-steam-line penetration point is disposed on a first side of the reactor containment vessel. Distance between outer surface of the reactor pressure vessel and inner surface of the reactor containment vessel on the first side is longer than the distance on a second side which is opposite to the first side.

Description

technical field [0001] The present invention generally relates to a containment vessel for a boiling water type nuclear reactor, and in particular, relates to a containment vessel capable of being compactly designed in terms of piping system. Background technique [0002] Figure 5 with 6 A prior art boiling water reactor containment vessel is shown. The reactor pressure vessel 1 is contained in the reactor containment vessel 2 . The horizontal cross sections of the reactor pressure vessel 1 and the reactor containment vessel 2 are concentric circles. In this example, four main steam pipes 4 and two feed water pipes 5 are connected to the reactor pressure vessel 1 . These main steam pipes 4 and feed water pipes 5 are placed in the upper dry well in the reactor containment vessel 2 and penetrate into the wall of the reactor containment vessel 2 at the main steam line penetration point 8 and the feed water line penetration point 20 respectively. [0003] The connection poi...

AI Technical Summary

Problems solved by technology

Therefore, the required height of the upper dry shaft 3 cannot be reduced, and the volume of the reactor containment vessel 2 cannot be reduced

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