A carbon steel vessel is made to Sect. VIII Div. I with MDMT -50°F.
The vessel has external attachments that are subjected to loads resulting in stresses on the shell or head.
Can such load bearing attachments be made from SA36 or even SA106B (not normalized nor impact tested), or must they be...
We are trying to bring back to life an old perlite insulated liquid O2 tank.
We have been pumping down the vacuum in the insulation space but can not get down below about 400 microns.
With the tank isolated from the pump we pull down to less than 10 microns so the pump appears to be capable of...
A flange is designed to ASME Code Sect. VIII Div. I, Appendix 2 and manufactured in 3 x 120° segments welded together.
Do these butt welds require any NDT? Any references for this construction?
Thank you
We have an old perlite insulated cryo tank in which we are trying to improve the level of vacuum insulation. We are down below 1 torr but are witnessing wild fluctuations in the reading of the vacuum gauge. It is a digital gauge made by Kurt Lesker. If we close the valve to the tank then the...
For the fabrication of Pressure Equipment (to whatever Code) what knowledge does a welding operator need in order to be considered a Qualified Pressure Welder?
A) Can turn a machine on and knows which button to press?
B) Can adjust the machine so that a weld is produced?
C) Can melt metal?
D)...
I tried this posting in the Cryogenic Engineering forum but received no replies so I will ask my question here.
Is there a significant difference in the final wear properties of tool steel materials cryogenically treated in liquid vs vapor?
