I have to add fire protection system to a Butane pressurized Sphere. To completed this we have to add some metallic supports for fire water piping in all surface of the sphere (supports will be welding on plate clips new).
My question is: We have to testing (pressure test) again the butane...
I want calculate bottom's thickness of tanks using API 653, but I have some questions about it.
I have a tank. It's over 20 years. I dont have inspection reports about pitting and bottom's thickness. Just I have design planes of the tank. In these planes thickness of the bottom = 6mm (0.2362in)...