Allowable Stress
ASME code design rules use an allowable stress design philosophy. In this type of engineering design, the true expected loads are defined, and a stress in each component is calculated…
Category: ASME Code, TEMA and API Facts
Quality Program
The ASME code requires each fabricator that builds or repairs ASME code equipment to have a quality program in place. A written quality manual is required for the program, which…
ASME Code Forms
A “Form U-1 Manufacturer’s Data Report” is like a birth certificate for a pressure vessel. It certifies who fabricated the vessel, the thickness and materials of most components, and the…
ASME Key Words
You may have heard the old joke that ASME stands for Always / Sometimes / Maybe / Except. Not true, but it is true that it can be hard to…
What is Flange Rigidity?
In the ASME code, Appendix 2 gives the rules and formulas for design of custom flanges (in other words, flanges that are not standard Class 150, 300, etc). Although the…
External Heating/Cooling Jackets: Half-pipe type
The most commonly used type of heating/cooling jacket in the chemical industry is the half-pipe jacket. This jacket uses a 180° segment of pipe welded directly to the shell in…
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