External Floating Roof

Term · Environment · MLC-T-ENV-010536

1. Pontoon-type or double-deck type cover that rests on the liquid surface in a storage tank or waste management unit with no fixed roof. [40 CFR 63.1251 (CFR 2013)]

2. Pontoon-type or double-deck type cover that rests on the surface of the material managed in a tank with no fixed roof. [40 CFR 265.1081 (CFR 2013)]

3. Floating roof located in a storage vessel without a fixed roof.

4. Pontoon-type (noncontact) or double-deck-type (contact) roof that is designed to rest on the stored liquid surface in a storage vessel with no fixed roof.

Table 1. Record
Identifier	MLC-T-ENV-010536
Field	Environment
Abbreviation	EFR
References	40 CFR 63.1361 (CFR 2013); 40 CFR 63.101 (CFR 2024); 40 CFR 63.1061 (CFR 2013); 40 CFR 65.2 (CFR 2013)

Record as JSON

{
  "id": "MLC-T-ENV-010536",
  "term": "External Floating Roof",
  "field": "Environment",
  "definition": "1. Pontoon-type or double-deck type cover that rests on the liquid surface in a storage tank or waste management unit with no fixed roof. [40 CFR 63.1251 (CFR 2013)]\n\n2. Pontoon-type or double-deck type cover that rests on the surface of the material managed in a tank with no fixed roof. [40 CFR 265.1081 (CFR 2013)]\n\n3. Floating roof located in a storage vessel without a fixed roof.\n\n4. Pontoon-type (noncontact) or double-deck-type (contact) roof that is designed to rest on the stored liquid surface in a storage vessel with no fixed roof.",
  "abbreviation": "EFR",
  "references": [
    "40 CFR 63.1361 (CFR 2013)",
    "40 CFR 63.101 (CFR 2024)",
    "40 CFR 63.1061 (CFR 2013)",
    "40 CFR 65.2 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/external-floating-roof/"
}

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