Astro Pak’s Northeast team was called on to perform surface remediation on a 22,000 gallon WFI tank measuring 12 feet in diameter and 30 feet in height. The tank exhibited severe rouging along with some physical damage. Our EHS&R team was instrumental in assessing any potential hazards and risks. Scaffolding was built to facilitate the confined space entry needed to gain access to the interior of the tank. At the start of the job, the surface RA (Roughness Average) ranged between 24 to 65. After mechanical polishing followed by electropolishing, we were able to achieve a mirror-like finish with RA values of 3 to 9 throughout the entire surface of the tank.
