By now, most of us are aware of the recent industrial accident that happened on the East Coast at a now-closed refinery. Thousands of pounds of deadly hydrofluoric acid escaped into the atmosphere following a massive blast, according to a recently released federal report.

What could have caused the explosions? According to the U.S. Chemical Safety and Hazard Investigation Board, the root cause was a decades-old elbow pipe that had degraded to just 7 percent of total thickness level. The elbow pipe that l
Source: NDT