Seismic Design
Similar to our discussion of wind design last month, seismic forces should be considered in pressure vessel design. Earthquakes are rare, but if not properly accounted for, a pressure vessel…
ASME Code, TEMA and API Facts
Category: ASME Code, TEMA and API Facts
Wind Design
UG-22 of Section VIII says that vessel designers must account for any and all expected loads on a vessel, in addition to the internal and external pressure loadings you might…
Dimensional Tolerances
The ASME code has surprisingly few dimensional tolerances. In fact, in section U-5, the Code states that tolerances are not fully addressed, and allowable tolerances should be based on engineering…
Heat Exchanger Fouling
Over time in service, deposits typically build up on the surface of tubes in a heat exchanger. This buildup is known as fouling and can occur on the inside or outside…
ASME Section IX – Welder Qualifications
In previous articles, we discussed weld procedures and PQR’s (qualifications of weld procedures). What about the people making the welds? Welders also must be qualified per the rules of Section…
ASME Section IX – Procedure Qualifications
Last month, we highlighted ASME Section IX weld procedures and want to dive into the procedure qualifications this month. Every weld procedure that a fabricator uses needs to be qualified…
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