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Testing Above Ground Storage Tanks

Testing Above Ground Storage Tanks

Testing Above Ground Storage Tanks

(OP)
Does anyone know of a specific regulation that requires hydrostatic testing of large (>750,000 gal) field-erected above ground storage tanks?
 
Are other tests acceptable in place of hydrostatic testing? i.e radiographic testing

Are there different testing requirements for petroleum versus non-petroleum storage tanks?  

RE: Testing Above Ground Storage Tanks

stein23,
You do not mention code of construction.
If it is API 650 there are alternatives.
See API 650 Clause 5.3.5,
Regards,
Kiwi

RE: Testing Above Ground Storage Tanks

Kiwi is correct.

The first place I would look is API650. "Hydrotesting" (filling the tank with water and waiting) is most commonly performed. However, testing welded joints with a vacuum box is also a permissable method if agreed to by the purchaser.

You did not mention your code of construction.

The local inspection authority may have important input here

   

RE: Testing Above Ground Storage Tanks

stein23,
        In addition to above posts by hydrotesting you are also applying weight to the tank base which essentially tests/loads the foundation. Would you/Client be happy that the first time the tank base is loaded is with the product being stored??

RE: Testing Above Ground Storage Tanks

As Kiwi states, hydro may be omitted.  However, you have to get the Owner, Tank Engineer-or-Record, and API-650 Inspector-of-Record to all sign-off on omitting the hydro.  You will find that obtaining the signatures of the Engineer and Inspector a fairly hard to obtain.  There are a LOT of things that a hydro accomplishes, and waiving it "for the Owner's convenience" is not a sufficient reason [for me, at least].

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