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what is Dip Ring?

what is Dip Ring?

what is Dip Ring?

Dear ALL,
In this paragraph what is the meaning of Dip Ring?
5.4.5 If specified on the Data Sheet, Line 12, a foundation drip ring shall be provided to prevent ingress of water between the tank bottom and foundation. Unless the Purchaser specifies otherwise, the ring shall meet the following requirements

-The drip ring shall extend at least 75 mm (3 in.) beyond the outer periphery of the foundation ring wall and then
turn down (up to 90°) at its outer diameter.


RE: what is Dip Ring?

See figure 5.5 in API 650, it makes it abundantly clear what they're talking about. Basically it's a sheet of metal that is welded to the chime and extends beyond the foundation to prevent water ingress.

Have never actually seen one on a tank, but I imagine they get more use in wet areas...

RE: what is Dip Ring?

Sir NBrink i appreciate your response but i have one more question, do we have a distance restriction or minimum in outside diameter of shell going thru OD of annular plate?

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