Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Recent Results from the Dispersed liquid Agent Fire Suppression Screen



Jiann C. Yang, Michelle K. Donnelly, William L. Grosshandler, N C. Prive


Mosl or the current methods for fire suppression efficiency screening (e.2.. cup burners) are designed for evaluating gaseous fire suppression agents. Potential uses of liquid agents as halon replacements have been recently proposed in several applications (cy., shipboard machinery spaces, engine compartments in armored vehicles). Under the auspices of the US Department of Defense Next Generation Fire Suppression Technology Program (NCPj, the National Institute of Standards and Technology (NIST) has been tasked to design. construct, and demonstrate a laboratory-scale apparatus that can perform thc screening of liquid agents in well-controlled conditions. Since the presentation of the tirst-generation NlST dispersed liquid _agent fire suppression ere en (DLAFSS) apparatus at the Halon Options Technical Working Conference 1998 [ 11, several modifications to the apparatus have heen made to alleviate clogging in the orifice of thc piezoelectric droplet generator when fluids with dissolved solids were used and to acconimodatc samples available in small quantities. This paper describes the modifications 10 the apparatus in detail and presents some recent screening results. A test protocol is also proposed for screening liquid a- elits.
Special Publication (NIST SP) - 984-4
Report Number


Yang, J. , Donnelly, M. , Grosshandler, W. and Prive, N. (1999), Recent Results from the Dispersed liquid Agent Fire Suppression Screen, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 16, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created April 27, 1999, Updated February 19, 2017