Welding Tips and Tricks

Hi all,
I was working in the petrochemical industry as a process engineer, mostly operations. Planning to move to maintenance
( piping & static), and quality control. Would like to get certified in weld testing & documentation. As I am working still in operations, need to get this done alongside my work. Does someone know any institutions that provide this facility? Please help, also if I can get some insights on the duration of the course too..

In this case, you have to specifically opt for welding courses that are designed for corporates. When I moved to piping and mech engineering, did the same, as I had to deal with 50+ welds on a daily basis. These courses does not consume much of our time as well.