Old secondary containment design vs. New secondary containment design

Subdivided Secondary Containment

Subdivided Secondary ContainmentIn the old days, the secondary containment around flammable liquid storage tanks could be a single system in which all the storage tanks sat. Today, that is NOT the case.

Both NPFA 30 and IFC Chapter 57 require the secondary containment to be such that an LOPC from one tank can NOT impact the other tanks around it.  They use the word “subdivided” to specify this.

(emphasis by me)

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