1. Cutting and Edge Preparation
Calculate the length of materials and cutting them following the fabrication drawing;
After cutting the materials, the dimensional inspection shall be done by QA/QC Inspector and should be recorded.
2. Welding
Fit-up assembly shall be carried out as per the Fabrication drawing.
The pipes and sheets shall be full welded by argon welding and be done as per approved WPS by a qualified welder.
Check the dimension of each cut pieces to ensure that the dimensions are matched with the shop drawings prior to assembly and make quality record for this checking.
Welding procedures and welders shall be qualified as per Project Specifications and relevant codes, prior to start of the welding.
Ensure that the edges are free from dirt, rust, oil, grease, paint etc.
Welding shall be done as per approved WPS and by qualified welder. Pre heating and welding consumable shall be checked before starting of welding.
3. Polishing
After Welding, the grinding shall be done by polishing wheel; After Grinding, Polishing shall be done by Nylon wheel to 2K Finish Passivation of welding.