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…
Category: ASME Code, TEMA and API Facts
ASME Section IX – Weld Procedures
All welds on pressure vessels must be made by qualified welders, using qualified weld procedures. Section IX of the ASME Code specifies all the requirements for those qualifications. A weld procedure,…
Seal vs. Strength Welds
Heat exchanger tube end welds can be specified as strength welds or seal welds. What is the difference? The tube to tubesheet joint is a critical component of the exchanger…
Collar Studs in Heat Exchangers
What are collar studs, and when are they used? Collar studs are threaded studs with a larger central hub attached (see diagram). They are commonly used on exchangers with removable…
Fatigue Analyses
When a vessel (or part of a vessel) is subjected to pressure loads that repeatedly cycle from low to high, the fatigue life of the vessel may need to be…
ASME Code Committees
New editions of the ASME Code are published every two years, with hundreds of updates, edits, and amendments. With 13 different sections and thousands of total pages, it is a…
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