Confined Gasket Joints
The TEMA standard requires gasket joints in all Class ‘R’ heat exchangers to be confined type. What is a confined gasket joint? These are joints that have a solid metal…
ASME Code, TEMA and API Facts
Category: ASME Code, TEMA and API Facts
Vessel Components – Vortex breakers
Vortex breakers are simple devices used to prevent the formation of vortices, or swirling patterns, at the drain nozzle in a tank or pressure vessel. If a vortex forms when…
Explosion Cladding
If a vessel requires thick shells and heads due to the design conditions but also needs the corrosion resistance of an expensive nickel alloy, it could be a very expensive piece of equipment.…
Nozzle Thickness Requirements in UG-45
How does the ASME Code determine how thick nozzles should be? While the standard code calculation for a cylinder under internal pressure often gives minimal requirements—frequently less than 1/16″ for…
Code Interpretations
Understanding ASME codes can be challenging, even though the code committees work to present information clearly. It can be difficult to convey the complex technical subject matter fully through text…
Code tolerances – Shell roundness
The ASME code gives tolerances for shell roundness in section UG-80, but this section is often misunderstood. UG-80 has two parts, (a) and (b). UG-80(a) applies to all vessels. It…
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