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Hi, hope you all are doing well. In the refinery that I work in, we have an Amine Regenerator unit that strips out H2S from Rich Amine (DEA). The top 3 shell courses are of SA-516 with SS304 cladding. We are having a leakage at the 4th shell course whose thickness was reduced from 16mm to a...

Hi, hope you all are doing well. In the refinery that I work in, we have an Amine Regenerator unit that strips out H2S from Rich Amine (DEA). The top 3 shell courses are of SA-516 with SS304 cladding. We are having a leakage at the 4th shell course whose thickness was reduced from 16mm to a...

Hey you all, hope you are having a good day. There has been an issue of early relieving with 3800 series POSRV with backflow preventer, installed on LPG service. The normal operating pressure is around 10 kg/cm2 while the set pressure is around 12 kg/cm2. A few days ago, the POSRV popped at 9.6...

Dear The Obturator, Thank you for your valuable guidance

Hi everyone, hope you all are doing well. I wanted to ask if we can calibrate the pilot PSV (removing the pilot part from the main valve) by connecting its inlet directly to the test bench? Apparently, there seems to be no issue in that but are there any precautions to be taken or code...

Thank you @LittleInch and @The Obturator for your responses.

I want to ask if any standard discusses how much is the allowable limit of changing the set pressure from the design set pressure. To be clear, I understand the 3% plus or minus tolerance but I am not referring to that. If a psv has design set pressure of 6 kg/cm2, and I have to install it at a...

EdStainless It was indeed roll clad and there were no signs of distortion as per the last inspection report. There was mostly pitting due to corrosion. Also, you mentioned pre-heating, can you please let me know the relevant API/Standard that could help me out in this regard i.e. to know how...

weldstan Thank you for your reply. I will definitely look up the benefits of GMAW for this task. Also, can you please suggest how to study the potential of distortion in the base metal? The conditions, as you also mentioned, do not lead to the distortion but I have to do the technical analysis...

A crude distillation column has base metal SA-516 Gr-60. The top dome and 2 adjacent shell covers are hot-cladded with Monel (Alloy NO4400 as per ASME Section II, SB-127). The cladding is damaged due to corrosion, and it is decided to perform weld overlay of Monel SB-127 over corroded area...