Double Wall Tanks

[napster385]

Hi Everyone,

Is there provision on the standards like NFPA,API or UL that permits fabrication of double wall tanks in lieu to construction of bundwall or containment wall in a tank farm?

Tank is aboveground, horizontal with 55,000 liters capacity.

Appreciate your comments.

Thanks

 

[IFRs]

Round steel dikes are common in tight facilities.

 

[JStephen]

The API/UL/NFPA tank standards address secondary containment and leak detection to a limited extent, but generally don't say when you need it.
That is addressed by federal standards and by local building and fire codes, which will reference NFPA 30 and/or the Uniform Fire Code.
From the bund/liter terminology, I assume you are likely not in the US, and would need to research local requirements in your area.