... line-ups, standard operating procedures, safety rules and regulations, and sampling techniques. Process tanks and storage systems are equipped with the latest in modern process control. Process variables ... underground salt domes, caverns, and other belowground storage systems. Process technicians are required to safely operate and maintain each of the complex storage and transfer systems in a tank farm. ... schedule. Manways and Manholes The chemical processing industry uses manways as access hatches or ports into and out of tanks and vessels. These are used for visual inspec- tion and access for cleaning....