Suspect HTHA damage based on time based Curves (C2026-00003)
Tuesday, March 17, 2026
8:00 AM - 8:30 AM Central
Location: 342 DE
Earn .5 PDH
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High Temperature Hydrogen Attack (HTHA) evaluation has evolved over the years, introducing new equipment types that were not initially intended to be inspected. However, applying high-sensitivity inspection techniques to such equipment can reveal fabrication defects that are difficult to distinguish from early-stage HTHA. This paper reviews the susceptibility evaluation of a piece of equipment operating below the non-PWHT Nelson curve. The evaluation is based on time-based curves and highlights the potential pitfalls operators may encounter when following best-practice inspection techniques
