NUCLEAR REACTOR COOLANT SYSTEM MAIN CIRCUIT ARRANGEMENT STRUCTURE

摘要

A nuclear reactor coolant system main circuit arrangement structure, comprising: a reactor building, a pressure vessel (30), a steam generator (36), a pressure regulator, a main pump (38) and main pipeline (32), the reactor building being provided therein with a raft foundation. The pressure vessel (30) is installed in the reactor building, and is disposed above the raft foundation. The main pipeline (32) is connected between the pressure vessel (30), the steam generator (36), and the main pump (38) to form a main circuit, with the pressure regulator arranged on the main pipeline (32). A height difference L between the center of the main pipeline (32) connected to the pressure vessel (30) and an upper surface of the raft foundation in the reactor building is 9.7-10.8 m. Compared to the prior art, the present application adopts a sunken arrangement of the main circuit, and therefore can increase reactor fuel module seismic acceleration resistance to 0.3 g or more without making large adjustments to a reactor fuel module structure configuration, thereby improving the seismic acceleration resistance capability of the reactor, and satisfying internationally-recognized third generation nuclear reactor technology anti-earthquake requirements.