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I have a question regarding water hammer/hydraulic shock calculations in regards to a chemical piping system. General Information: 14 inch pipe, specific gravity of 1.3 This specific situation: Consider a control valve that closes in 1 second. The upstream piping consists of this 14 inch...

I personally am not too familiar with ASME codes (trying to learn when I can). I am considering welding externally to a stiffening ring associated with a pressure vessel. What part of the code, if any, addresses this?

I am not well versed in API 620, but does it allow lap patches for internal repairs?

Thanks for the responses. I will consult 571 as well.

This will probably come off as a very generic and broad question so I can expect broad answers. I am quite new at this and learning via mentoring and trying to get as much field experience as possible. If I wanted to use a spool piece of stainless steel, approximately 5 feet, in a carbon steel...