Patent ID: 7139356
Filing Date: 2006-11-21
Classification: G21C,Y02E,Y10T

Abstract:
1. A procedure for the replacement of a section of a pipe in a primary circuit of a nuclear reactor cooled by pressurized water flowing between a first and a second component of the primary circuit of the nuclear reactor, the steps comprising the steps: locating where cuts are to be made on the pipe, cutting a section of the pipe at its two ends defined by the located cuts; removing the section; beveling joined ends of parts remaining after the section has been cut out from the primary circuit pipe; adjusting a new replacement section as to length; beveling the joining ends of the new replacement section; positioning and bevel welding joining ends of the replacement section onto the ends of the remaining parts of the pipe from outside the pipe; performing at least one operation of machining, inspecting and welding an inner part of the joined ends welded together from within the pipe by remote control by introducing and positioning means for carrying out work within the pipe from one of the first and second components of the primary circuit.