ASME Code, TEMA and API Facts

Non-Destructive Testing Methods: Internal Rotary Inspection System (IRIS)

Posted on November 9, 2021

Similar to eddy current testing, this test method uses an internal probe to inspect heat exchangertubes. But unlike eddy current, ultrasonic inspection is the basis of the method. The IRIS…

Non-Destructive Testing Methods: Helium Leak Test

Posted on October 12, 2021

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.…

Non-Destructive Testing Methods: Positive Material Identification (PMI)

Posted on September 14, 2021

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

Posted on August 12, 2021

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

Posted on July 8, 2021

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)

Posted on June 11, 2021

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…