Method and device for testing a weld ring driving a main cooling medium connected to the pressure vessel of the reactor of a nuclear plant

摘要

Method for testing a weld bead (10) of a main pipe (4) mediode cooling, connected to the pressure vessel (2) of the reactor of a nuclear plant, in which the submersible vehicle propelled (12) disponeun in the pressure vessel (2) of the reactor, open and flooded, quecontiene a checking device (20), which can be arranged on the inner circumferential surface dela main line (4) of the cooling medium in each front face, and displaced direccióncircunferencial of said conduit (4) of the cooling medium, and in which the submersible vehicle (12) esintroducido within the main driving means also flooded cooling, and is fixed in elcordón welding (10) by spreading arms radially ( 16), and wherein the decomprobación device (20) is arranged below the weld seam (10) and displaced along dichocordón welding (10) in circumferential direction.