Development of chamber local dry underwater welding system and drainage properties research

摘要

Because of relatively large protect area and good underwater welding quality,chamber underwater welding has a good using prospect in spent fuel pool maintenance in nuclear power plant.Developed a chamber local dry automatic underwater welding test system,built a data acquisition platform, carried out drainage seal test in the water tank, and analyzed the test data. The results show that the chamber local dry underwater welding test system can realized good drainage seal, the drainage effect is enhanced with the increase of the drainage gas flow rate and drainage time. The results lay the foundations for the research of chamber local dry underwater welding.