1.2 limitations

[kdgran]

Customer would like to use a swing-in style manway and believes that 1.2.b justifies this manway because it is proprietary. This style of manway has a gasket on the inside of the tank, so the sealing point is actually at the shell wall.

I believe 1.2 is for piping only and does not include manways.

thoughts

Thank you

 

[JoeTank]

I don't believe that API prohibits other details. You still have to follow the reinforcemnt rules. The gasket would normally seal against the manhole neck, not the shell itself. I don't ever recall such a detail on an oil tank. they are common on water tanks and have been for decades.

Joe Tank

 

[kdgran]

You are correct about the gasket actually sealing on the manway collar. And this isn't a oil tank, the customer will store brandy in this tank. And since brandy is a flammable liquid, they want a API stamped tank.