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Fogging formulations for fixation of particulate contamination in ductwork and enclosures

United States Patent

September 8, 2015
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A method and an apparatus using aqueous fixatives for fogging of ventilation ductwork, enclosures, or buildings containing dust, lint, and particulates that may be contaminated by radionuclides and other dangerous or unsafe particulate contaminants, which method and apparatus are capable of (1) obtaining full coverage within the ductwork and (2) penetrating and fixing the lint, dust and large particles present in the ductwork so that no airborne particles are released during or after the application of the fixative. New aqueous fogging solutions outperform conventional glycerin-based solutions. These aqueous solutions will fog using conventional methods of application and contain a surfactant to aid wetting and penetration of the lint and dust, a binder to stabilize loose or respirable particles, and an agent to aid in fogging and enhance adhesiveness. The solutions are safe and easy to use.
Maresca, Jr.; Joseph W. (Sunnyvale, CA), Kostelnik; Lori M. (Aiken, SC), Kriskivich; James R. (Richland, WA), Demmer; Rick L. (Idaho Falls, ID), Tripp; Julia L. (Pocatello, ID)
Vista Engineering Technologies, Inc. (Richland, WA)
13/ 317,831
October 27, 2011
This invention was made with government support under Contract Number DE-AC07-ID14517 awarded by the United States Department of Energy. The government has certain rights in this invention.