External floating roof failure

{
  "id": "MLC-T-ENV-010537",
  "term": "External floating roof failure",
  "field": "Environment",
  "term_source": "External Floating Roof Failure",
  "definition": "Defined as any time the external floating roof's primary seal has holes, tears, or other openings in the shoe, seal fabric, or seal envelope; or the secondary seal has holes, tears, or other openings in the seal or the seal fabric; or the gaskets no longer close off the stored liquid surface from the atmosphere; or a slotted membrane has more than 10 percent open area.",
  "abbreviation": "EFR Failure",
  "subject": "Built environments",
  "references": [
    "40 CFR 65.2 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/external-floating-roof-failure/"
}