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Hello, I am preparing a presentation on PSV maintenance and would like to include an example or two on incidents due to lack of maintenance/recertification on PSV. I tried CSB website but the ones I found were more on no PSV or PSV isolated from equipment. If anyone can share an example of such...

Thanks for the input folks. They are helpful.

Hello, Maybe a dumb question but I can't seem to find a clear answer from the codes (ASME sec. viii/ Xiii / API 520). Any inputs would be much appreciated! Can a PSV be installed downstream of the protected pressure vessel? I saw some configurations in a plant where a gas aftercooler...

Hello, I know both ASME Section VIII, Div. 1 and B31.3 require thread engagement for the full depth of the nut. But in reality, what does that mean? If a stud is flush with the nut, will that be considered sufficient engagement? Or there has to be a certain number of threads protruded / out of...

Hello all, Can countersunk plugs be used on pressure vessels' small bore nozzles? I can only find ASME B16.14 covering the countersunk plugs but I can't find it in the referenced standards U-3 of ASME Sec VIII, Div. 1. Does this mean it can't be used on a pressure vessel? B16.14 is...

Hello, Section VIII, Div. 1 U-1 (c)(2)(-c) says pressure containers which are integral parts or components of rotating devices, such are pumps, compressors, etc. (where primary design considerations and/or stresses are derived from the functional requirements of the device) is excluded from the...

Thanks for the info David. Just checked the version of the code at the time and it specifies the W marking meaning.

Hello, I ran into a pressure vessel that was designed / fabricated to Section VIII, Div. 1 and registered with local jurisdiction authority. In addition to normal markings (e.g. RT-1), the nameplate has a "W" marked. What does the "W" mean? I tried checking section viii the marking section (and...

Thanks all for the input. They are helpful.

Hello, I understand it is necessary to ground / bond pressure vessels (ASME Sec VIII) so the static electricity can be dissipated. In API 572 it provides some good practices on checking bonding cable connections. My question is that if a pressure vessel is only bolted to concrete pilers/pads...

Hello all, As I am reading thru Part 5 of API579-1, I run into a question on the Level 1 assessment for elliptical heads. Hope you guys can help me out here. In Level 1 assessment procedure (5.4.2), it says level 1 can be used to evaluate type A component, which includes elliptical heads...