Dear Experts
How often should I perform Ferrite Test on Autenitic or Duplex STSTs (Test Frequency)? Should I perform it with every new consumables batch? Should I perform it periodically regardless of any changes? And what are the preferred ranges in terms of FN for both Auten. and DSS?
Thanks
To Piping Experts: I'm new to piping industry, and I would like to learn about Tie-ins between new and existing piping system. How would you suggest a method statement for Tie-ins, both cold and hot tapping starting from spools fabrication at work shop all the way to hydrostatic pressure test...