"And uneconomic." Yep - - high probability of a BOOM!
Please have 'genius' client email his insurance provider; HELL NO is easier to read than to listen to on the phone.
Most Demonstration vessels are made from big-bore pipe [seamed or seamless] and SA105 fittings, including Pipe Caps for heads. Call it a Blowdown Drum, and call the contents "mixed hydrocarbons" or something else innocuous. Do not designate contents as acetylene; that requires 'moss' filler to...
You will find the tables for c/s in Section IIA. You need to look the common materials up ASAP. The shops all have Sect. II books, and the tables don't change [since 1999]. Just ask to look at an old one.
Have you ever watched a vessel being handled? The probability of the entire weight of that vessel ending up being supported by one trunnion is not trivial. It is a very real possibility. Assuming a good fitter/welder, the extra time/cost of full-penn [vs, whst you detailed] is trivial. Poor...
". . .weld the trunnion to the shell with whatever weld size is required. Normally it's full pen thru the trunnion wall and a fillet."-
Exactly - Full-Penn the trunnion, then lower the repad and weld it into the OD trunnion weld. Look at the repad detail dwgs for API 650 nozzle repads.
With such a huge clearance in the holes, you will need to detail oversize washers for this mess. The holes are 0.75" OS, I would use the largest size [ 3" x 3"?] washer that will fit the ring, and probably 3/4" thick.
This is a Code-stamped pressure vessel. Period.
The MAWP & MAWT are plainly stamped on the plate. Period.
Your speculations about the flanges are meaningless. If you really feel the need to reverse-engineer this Code vessel, you will need the U-1, the design calc's, and the design...
". . . and, say, how far away from NY is NJ, anyway?"
an amazingly long distance, in intangibles [such as PE standards]. Physically, the Geo Washington bridge regularly takes over one hour to cross, driving as fast as possible.
What Steve said. Quick Closures are a 'catalog item', and the manufacturer has already done the engineering for you. - ASSuming you buy from a reputable mfr.
Not common to strip a vessel of it's insulation just to take a few thickness measurements - you cut 2-inch ports and measure there.
Try hiring a certified API Inspector with 510 & 653 cert's. What is being discussed [and agonized over] is a typical day in the tank farm for an API. Tank or...
Repads are pretty common for big-bore pipe supports on thin - 1/4" , 5/16" - tank walls. A liquid-filled 6NPS or 10NPS line is a substantial load, so spreading it out onto the tank shell is needed.
Is it permissible to flame-cut new material? Yes
Does flame-cut material require any special restrictions that mechanically sheared material does not? Not really; just grid to shiny metal prior to welding.
If you trim off the weld plus the HAZ [HAZ will be < 0.1mm], do you think that the...
Gotta love watching someone reinventing the wheel. IMHO, O'Lets are the best for Branch Connections. These are designed & tested for this use; as opposed to guessing what plumbing item can be cut up and forced to serve as a boiler & pressure vessel item...
And what is the accuracy of the machining of these 'dogbones'? If they have been cut by hand, vs. machined to +/- 0.002", have a laugh & a large adult beverage.
In inches; 2" x 2" x 3/16" angle iron, installed "Leg out & Leg Down". Further, use these tray rings as vacuum stays in the vessel calculations. You will find that a Full Vacuum rating is available.
Some 'genius' has redefined the API standard 3-ft/0.9m length of the gauge board to 2.5m. Hope the tank crew is aware that their work will have to be 3x as plumb and 3x as round & smooth as the industry standard.
