Process vents in cloroprene service

{
  "id": "MLC-T-ENV-022311",
  "term": "Process vents in cloroprene service",
  "field": "Environment",
  "term_source": "Process Vents in Cloroprene Service",
  "definition": "Each continuous front-end process vent, each batch front-end process vent, and each back-end process vent in a process at affected sources producing neoprene that, when uncontrolled, contains a concentration of greater than or equal to 1 ppmv undiluted chloroprene, and when combined, the sum of all these process vents within the process would emit uncontrolled, chloroprene emissions greater than or equal to 5 lb/yr (2.27 kg/yr). If information exists that suggests chloroprene could be present in a continuous front-end process vent, batch front-end process vent, or back-end process vent, then the process vent is considered to be “in chloroprene service” unless an analysis is performed as specified in § 63.509 to demonstrate that the process vent does not meet the definition of being “in chloroprene service”. Examples of information that could suggest chloroprene could be present in a process vent, include calculations based on safety data sheets, material balances, process stoichiometry, or previous test results provided the results are still relevant to the current operating conditions.",
  "subject": "Built environments",
  "references": [
    "40 CFR 63.482 (CFR 2024)"
  ],
  "url": "https://mlchart.com/terminology/environment/process-vents-in-cloroprene-service/"
}