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@LittleInch We have cross country gas lines and water lines. Currently there is no inspection regime being followed for these lines. The purpose of the question is to get knowledge about minimum requirements mentioned in different codes and then align our inspection regime accordingly.

Is there any API or other standard about inspection of cross country pipelines? Which inspection types are recommended and what is the recommended frequency? Thanks, JZ

Is there any API or other standard about inspection of cross country pipelines? Which inspection types are recommended and what is the recommended frequency? Thanks, JZ

I am developing a welder Qualification procedure for my industry. The welding work here is mostly related to piping and vessel repair welding. The reason I'm asking for standards is to study different guidelines provided and followed by other industry before making our own.

Is there any other standard/ code available that provides guidelines about welder Qualification Test except ASME section ix? I tried searching google but couldn't find any. Thanks, JZ59

Hello, We have bought some new equipment (pressure vessel) for our plant. The equipment have cleared the hydrotest after construction. These equipment were constructed in a different country and were transported to a new location for installation and use. The equipment will be installed 8 to 9...

@MortenA, you are right. Actually the valve is installed on Ammonia Service. In case of slight passing, Ammonia would flash right after passing through the seat causing temperatures to drop in that region. The icing that we can see in the picture is at the same area where seat and disc are...

@The Obturator, I thank you again. The seat and disc dimensions matched the ones given in the manual.

@TheObturator Thank you for your response. Please find answers to your questions below: 1. Seat design - is it metal to metal or elastomer (material?) Seat Material is SS316 as found in PMI. 2. If metal seats, have they been lapped properly? Have OEM parts been used? Seats were lapped by...

A PRV is installed at our site on Liquid Ammonia Service with operating temperature of 90F and Operating Pressure of 300 Psig. CDTP of PRV as mentioned on nameplate is 600 Psig and same is used during its calibration in shop. Icing was reported on PRV body at disc area in past month (picture...