Release Prevention Barrier

A release prevention barrier includes steel bottoms, synthetic materials, clay liners, and all other barriers or combination of barriers placed in the bottom of or under an aboveground storage tank, which have the following functions:

  1. preventing the escape of contaminated material, and
  2. containing or channeling released material for leak detection.

Source: API RP 545 Recommended Practice for Lightning Protection of Aboveground Storage Tanks for Flammable or Combustible Liquids, First Edition, October 2009. Global Standards

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