ISO 7195:2005 pdf download.Nuclear energy - Packaging of uranium hexafluoride (UF6) for transport.
The cleaning process should involve degreasing with an alkali cleaning solution at between 80 C and 90 C (176 F and 194 F) followed by a thorough washing with water within the same temperature range. The cylinder should then be blown dry with filtered, oil-tree, dry air with a dew-point of 40 C (- 40 F). Drying should be continued until air exhausting from the cylinder has a dew-point of — 35 C (- 30 F) or lower.
Other methods of cleaning and drying that achieve the same result may be applied.
6.2,32 ExterIor of cylinders
The outer surface of the cylinder shall be easily decontaniinable. After cleaning the inside of the cylinder and completion of testing, the exterior surface of the cylinder shall be blasted to remove rust, scale, dirt and other foreign matter. Where a protective coating system is to be applied, the cylinder shall be blasted to the protective coating system manufacturer’s requirements A protective coating that should be suitable for service conditions should be applied to the outside of the cylinder and shall be applied in accordance with the coating manufacturer’s instructions,
6.2.3.3 Valves
Valves that are procured, cleaned, lubricated and assembled In sealed packages using quality control practices conforming to Clause 4 may be installed In cylinders as received. Otherwise, prior to installation Into the cylinder, the valve shall be disassembled and cleaned to remove all traces of machining lubricants, metal chips, Oxide film and other foreign substances in accordance with 6.2.3.1.
Other methods of cleaning and drying that achieve the same result may be applied.
6.2,32 ExterIor of cylinders
The outer surface of the cylinder shall be easily decontaniinable. After cleaning the inside of the cylinder and completion of testing, the exterior surface of the cylinder shall be blasted to remove rust, scale, dirt and other foreign matter. Where a protective coating system is to be applied, the cylinder shall be blasted to the protective coating system manufacturer’s requirements A protective coating that should be suitable for service conditions should be applied to the outside of the cylinder and shall be applied in accordance with the coating manufacturer’s instructions,
6.2.3.3 Valves
Valves that are procured, cleaned, lubricated and assembled In sealed packages using quality control practices conforming to Clause 4 may be installed In cylinders as received. Otherwise, prior to installation Into the cylinder, the valve shall be disassembled and cleaned to remove all traces of machining lubricants, metal chips, Oxide film and other foreign substances in accordance with 6.2.3.1.
