[en] Based on the current conceptual design, final closure of the Compact Ignition Tokamak (CIT) vacuum vessel requires two in-situ welds in the poloidal direction. Welding must be performed from the inside of the vacuum vessel because of limited access. The ability to control and predict the amount of weld distortion and the ability to ensure the long-term reliability of these welded joints under cyclic loading is critical. R and D programs are in progress to investigate these issues as well as develop specialized welding equipment to produced these welds. The current status and results are presented. 1 ref., 8 figs., 1 tab