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In the 1968 ASME BPVC Section VIII there is UW-12 Table, for joint efficiencies. I do not have a copy of the Code betwixt 1965 and 1968, so I am uncertain when it was added. Mr. Eric API 510 & 653

well-made mixer swivel seal is a heavy reinforced rubber packing ring that lasts a long time unless it is chemically attacked. The sliding speed and duty cycle are both very low. I've only ever seen swivel type side entry mixers in crude oil storage, not in a paper pulp application. I have...

Hestnes, I suggest you research that the Scottish jurisdiction regulations concerning steam vessels. There should be clear guidelines from the jurisdiction re: the settings of the SRV. The regulations for safety relief valves are typically different that pressure relief valves upon pressure...

Where in Bellingham are these pressure vessels? Next time I am on the west coast I would like to see these in person. Eric API 510 & 653

Testing and inspecting these mixer pots/vats to either API 653 or 510 would be aligned with industry practices. My go to is if the equipment has a floor with either an annular ring or a floor plate extension type floor, API 653. If it has a shaped head, then API 510. Formed, but flat bottomed...

Ate they missing, or are they broken? Missing, isn't a problem, broken off threaded studs one wonders why, and would warrant investigation. Eric API 510 & 653

I can speak to #5. I have seen tanks, piping and pressure vessel examples of welds in close proximity to one another. This is for both longitudinal and circumferencial (girth) weld seams. Effects of these vary based upon many variables. The main negative effect I have seen is where the...