Welding operations visual examination

Tack welds shall be made with the filler metal specified by the WPS and made by a qualified welder or welding operator. Tack welds shall be removed or fused within the root pass weld. Permanent tack welds shall be examined visually for defects and, if found to be defective, shall be removed. All bridge tacks shall be removed prior to welding the root pass or subsequent deposit. 

Templates for each of the joint configurations are stored within the system. The operator selects one of the templates, and is provided with a visual representation, as shown in Figure 3, on which he can alter the Joint dimensions and weld geometry to match those of the item to be examined any ae-cess restrictions can also be defined. Using information from a database of available probes, along with the examination level required, ProcGen then calculates the set of scans required (see Figure 4). 

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