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http://dx.doi.org/10.7731/KIFSE.2013.27.1.039

An Experimental Study on Explosion Hazard of Dry Cleaning Solvent Recovery Machine in Laundry  

Choi, Jung-Min (Fire Insurers Laboratories of Korea)
Son, Bong-Se (Fire Research Division, Gacheon Univ.)
Kim, Dong-Suk (Fire Insurers Laboratories of Korea)
Publication Information
Fire Science and Engineering / v.27, no.1, 2013 , pp. 39-45 More about this Journal
Abstract
This study analyzes the explosion hazard of dry cleaning solvent recovery machine in laundry shop in two aspects, i.e. combustible and ignition source, and determines the explosive conditions of this machine by conducting mockup explosion tests repeatedly, varying conditions and using real dry cleaning solvent recovery machines. As to combustibles, two kinds of combustibles used widely in Korea have been selected and tested. The flash points, LEL's, and saturation vapor pressures of those combustibles have been measured, and their explosion specific curves have been drawn, based on the results of the measurements, so that the explosion risks of those materials may be determined, depending on the temperatures. Potential voltages generated from materials for laundry and foreign materials of metals have been assumed to be the ignition sources in this application, and their potential voltages have been measured, depending on temperature, humidity, and antistatic agent, by using real materials for laundry and a potential voltage measuring device. Tests have been conducted, varying the quantities, concentrations, and operating temperatures of materials for laundry. As a result, explosions have not been generated with potential voltages of materials for laundry, but explosions have been observed when applying artificial spark energy of 2.0 mJ.
Keywords
Dry cleaning solvent; Combustible; Ignition source; Explosion; Laundry shop;
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