Leak

{
  "id": "MLC-T-ENV-015538",
  "term": "Leak",
  "field": "Environment",
  "definition": "1. Any of several events that indicate interruption of confinement of vinyl chloride within process equipment. Leaks include events regulated under subpart V of this part such as:(1) An instrument reading of 10,000 ppm or greater measured according to Method 21 (see appendix A of 40 CFR part 60);(2) A sensor detection of failure of a seal system, failure of a barrier fluid system, or both;(3) Detectable emissions as indicated by an instrument reading of greater than 500 ppm above background for equipment designated for no detectable emissions measured according to Method 21 (see appendix A of 40 CFR part 60); and(4) In the case of pump seals regulated under § 61.242-2, indications of liquid dripping constituting a leak under § 61.242-2.Leaks also include events regulated under § 61.65(b)(8)(i) for detection of ambient concentrations in excess of background concentrations. A relief valve discharge is not a leak.\n\n2. Any visible leakage, including misting and clouding.\n\n3. Break in the integrity of the vent collection or control device system (i.e., in the duct work, piping, etc.) such that visual particulate emissions, liquids or residue form outside the vent collection system or control device.\n\n4. Any instance in which a PCB Article, PCB Container, or PCB Equipment has any PCBs on any portion of its external surface.",
  "references": [
    "40 CFR 61.61 (CFR 2013)",
    "40 CFR 63.742 (CFR 2013)",
    "40 CFR 63.11588 (CFR 2013)",
    "40 CFR 761.3 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/leak/"
}