Peripheral Vapor Containment : A system that cools the perimeter of a vapor degreaser tank near its top for the purpose of condensing a saturated vapor blanket from boiling flammable solvent
NFPA 34 Standard for Dipping and Coating Processes Using Flammable or Combustible Liquids, 2007 ed. http://www.nfpa.org/assets/files/AboutTheCodes/34/ Errata34-07-1.pdf, (Std: Dipping and Coat Procss Using Flam&Comb Liqd - Amer) {198 NFC}