Non-Destructive Testing Methods: Helium Leak Test
A helium leak test can be used to find through-wall leaks in pressure equipment and welds. A vessel or exchanger is first filled with 5-10 psi of helium and sealed.…
ASME Code, TEMA and API Facts
Category: ASME Code, TEMA and API Facts
Non-Destructive Testing Methods: Positive Material Identification (PMI)
Positive material identification (PMI) ensures that the components and welds in a unit are actually the correct materials. Following proper procedures for material ordering, receiving, and traceability should prevent any…
Non-Destructive Testing Methods: VISUAL INSPECTION
Visual Inspection (VT) is the oldest and most basic method of inspection. It is the process of looking over a piece of equipment using the naked eye to look for flaws. It…
Non-Destructive Testing Methods: Hardness Testing
Non-Destructive Testing Methods: Hardness Testing This method is used to measure the hardness of base materials, welds, or heat affected zones around welds. Hardness measurements are useful to evaluate material properties such as…
Non-Destructive Testing Methods: Liquid penetrant testing (PT)
Like magnetic particle testing, this is a surface-only inspection method that can find imperfections such as cracks, surface porosity, seams, laps, etc. Unlike MT, it can be used on magnetic…
Non-Destructive Testing Methods: Eddy Current Testing
Eddy current testing (ECT) is a procedure commonly used to inspect heat exchanger and boiler tubing. This method uses the principals of electromagnetic induction to detect flaws or wall loss…
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