High Temperature Hydrogen Attack (HTHA) is a significant but often overlooked risk in industrial environments. This process occurs when steel absorbs hydrogen gas at elevated temperatures, causing methane bubbles to form inside the metal. These bubbles create internal pressure that weakens the steel, potentially leading to severe damage in critical components such as pressure vessels and pipelines, commonly found in industries like petrochemicals and fertilizer production.
The video illustrates how ultrasonic testing, a type of non-destructive evaluation, can identify early signs of HTHA damage before it becomes dangerous. By using advanced scanning methods, it reveals the presence of internal methane bubbles that compromise the steel's structural integrity. The explanation also covers the chemical reaction behind HTHA and suggests preventive measures, including the use of hydrogen-resistant alloys and careful monitoring of operating conditions. This resource is valuable for engineers and safety experts looking to understand and mitigate this hidden threat.