We have performed a complete hydrotest of the boiler before the steam blows. After this phase, we have to cut the steam pipes (3 pressure level boiler) to install and weld the flow nozzles. Unlike most of our previous projects, the nozzles are installed upstream the code stop valve (boiler external piping).
Up to now, our standard practise is to weld and perform 100% Xrays.
Now it seems that according to ASME B31.1 (