Process Upset

{
  "id": "MLC-T-ENV-022305",
  "term": "Process Upset",
  "field": "Environment",
  "definition": "1. Defined at § 122.41(n).\n\n2. Exceptional incident in which there is unintentional and temporary noncompliance with categorical pretreatment standards because of factors beyond the reasonable control of the IU. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. [40 CFR 403.16(a)]\n\n3. An exceptional incident in which there is unintentional and temporary noncompliance with technology-based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.",
  "references": [
    "40 CFR 122.2 (CFR 2013)",
    "Pretreatment Acronyms and Glossary",
    "NPDES Permit Writers Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/process-upset/"
}