Enrichment tails assay

{
  "id": "MLC-T-ENE-000703",
  "term": "Enrichment tails assay",
  "field": "Energy",
  "definition": "A measure of the amount of fissile uranium (U-235) remaining in the waste stream from the uranium enrichment process. The natural uranium \"feed\" that enters the enrichment process generally contains 0.711 percent (by weight) U-235. The \"product stream\" contains enriched uranium (more than 0.711 percentU-235) and the \"waste\" or \"tails\" stream contains depleted uranium (less than 0.711 percent U-235). At the historical enrichment tails assay of 0.2 percent, the waste stream would contain 0.2 percent U-235. A higher enrichment tails assay requires more uranium feed (thus permitting natural uranium stockpiles to be decreased), while increasing the output of enriched material for the same energy expenditure.",
  "references": [
    "EIA Glossary"
  ],
  "url": "https://mlchart.com/terminology/energy/enrichment-tails-assay/"
}