Thank you gentlemen for your replies. The vessel is indeed being fabricated by a machine shop with a certificate. Actually, I asked them the same question after posting this, they gave me the same answer. I should have asked him first but didn't think to. Again, thanks!
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...
Thank you, gentlemen, for your replies.
I have a device that heats water in a tube by means of external electric resistance heating and heat conduction through a metal matrix surrounding the tube (and not by having the heaters directly immersed in the water) to generate steam. The...
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...
Thank you for your reply.
If the customer actually desires a rupture disk rather than a pressure relief valve, does Section I allow it? I'm not seeing any indication that it does in part PG.
Hmmm. In Section VIII either a pressure relief valve or a rupture disk can be used for overpressure control, mentioning both specifically. Section I speaks only of pressure relief valves in part PG and says nothing about rupture disks except in part PVG, which is not applicable to me.
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.
The lab will be unmanned during operation, so no safety hazard. But I think I will stick to the approved list for the proof-of-concept prototype and deal with the increased iron content problem later.
First of all thanks to all of you for your replies, I appreciate every one.
I was beginning to suspect something like a stress corrosion problem. Thanks for pointing that out, metengr. This will not be a problem with the initial research system, but the final production model will have to...
Thank you for your feedback. Apparently this sounds like a sketchy idea to you guys.
This boiler system will be used to provide superheated steam at 70 bar for a research project I am not at liberty to discuss.
The tubing in the system will have a pressure rating of over fourteen times the...
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...
