I am working on a pressure vessel for laboratory use that is designed per Division 1 rules. I have been doing extensive FEA on the design per Division 2 guidelines, but I am not clear what is required for ASME certification under Division 1 rules.
If the PV is based on Div 1 design by rule...
I am designing a pressure vessel that will be using Inconel 718 bolts due its strength retention at the design operating temperature of 550C. Preliminary testing has shown a problem with galling when torquing the bolts with dry threads, so I am considering using anti-seize to prevent galling...
In the preamble to Section I, there is this verbage:
"Unfired pressure vessels in which steam is generated shall be classed as unfired steam boilers with the following exceptions:
(a) vessels known as evaporators or heat exchangers"
What is the difference between a device classified as an...
I can't find anywhere in Section I where it actually states that, and I don't want to assume anything. I am designing a forced-flow steam generator with no fixed steam and waterline for laboratory research use.
Thx.
Hello all,
I am designing a small boiler/superheater system that will use heaters having inconel 625 tubing cast into an aluminum matrix that has an electric heater embedded in it. This is an off the shelf item. I will use three in series, the first to boil the water, the second to raise the...
Hello everyone,
I am designing a pressure vessel according to division one rules. It is a special purpose pressure vessel that will have a door to allow access into the PV after depressurization. The door opens internally and is sealed against the PV by the operating pressure. I have...
How does Division 1 handle external holes in flange covers that do not penetrate all the way through? If the hole goes all the way through there are rules for reinforcement. Do they apply to blind holes as well?
Or is there a calculation such as for the minimum thickness over a seal groove...
Hello folks,
I am designing a pressure vessel according to division 1 rules. The PV will operate at a high temperature, so the LSR factor is 1.56, which results in a test pressure just about twice the design pressure when also factoring in the 1.3 multiplier.
This is causing concern with...
Hello,
I am designing a pressure vessel according to Division 1 rules that will eventually be fed steam via a piping system. Does the hydrotest require that the piping be included, or can that be tested independently? Nothing is said about piping in UG-99.
Thanks.
