A great example of why more expertise around Cathodic Protection is never a bad thing!
Thanks for sharing!
-KLee
What you get is what you inspect, not what you expect.
If you are modifying the existing nozzle and replacing it with a larger one, you will have to run calculations for your modification per the original code of construction. (Not necessarily the original *edition* of the code - you could use the current edition of the code if your vessel meets...
Thanks for your responses, all. We have found four total vessels so far with gaps ranging between 1/2" to 5/8". All from the same manufacturer.
dhengr, even if I was comfortable leaving the fixed side of the drum alone, I cannot shim the floating support, which also looks like this. I won't...
Well, this is a new one. We received a new vessel and found during installation that the saddle baseplate was severely distorted. (See attached photo.) The gap is as much as 1/2" at the edges of the baseplate.
The OEM is suggesting we shim this, but I disagree that any amount of shimming...
Metengr,
I do not understand your above post regarding the entire circumference limitation. How does a circular/oval overlay on the shell of a pressure vessel have anything to do with restoring the circumference? When I think of a "rectangular" overlay, I think of one that "follows" the...
Hmm, I don't have a copy as someone at my former place of employment swiped it (nice, huh?). Can't say what's in the current edition, but it used to be in there somewhere. I used it to design a shipping spider for a particularly challenging column once. But alas, I've since moved to the dark...
Yes, thank you all for your replies. I was able to find that same link, micalbrch, which confirmed my suspicion that the 1/4" dimension was a thread pitch.
I had the idea to go find the original project job books. After much digging in dark, musty places, I turned up a dimensional drawing...
Get your hands on a copy of Dennis Moss' "Pressure Vessel Design Manual." There are whole chapters on transportation and erection of vessels, including shipping saddle designs, spiders, and lugs.
Yep, that video is quite nice. I only wish they'd done the same at St. Charles! They even built a concrete bridge across River Road just to bring the equipment over the levee. It is strange to see a bridge that goes from the river to...nowhere (except onto Valero's property, of course)...
Hmm, I worked for the Valero St. Charles Refinery when they installed their new hydrocracker. I thought that was the record - there were three lifts performed just like this one, with the largest vessel having walls 11" thick! Mammoet did the lifts. The largest vessel caused huge dips in the...
Sorry, I didn't mean "countersunk" into the flange. Perhaps "screwed into tapped holes in the flange" is a more appropriate description....
And the shaft of the studs looks like this: Link
I have some old high pressure reactors, built in Germany during the 1930s. All of the drawings are written in German, with English scattered here and there.
Need some help deciphering the stud bolt callouts. We are replacing the stud bolts since they have never been replaced (yes, you read...
I have an interesting request I've not come across before.
We have a vertical, ASME VIII-D1 vessel with some sort of rotating equipment inside, the driver of which is mounted onto a studded outlet in the bottom F&D head. (Sorry I don't know exactly what it is, the vessel drawing is written in...
