Dust explosion hazard in ITER: Explosion indices of fine graphite and tungsten dusts and their mixtures

HTGR Dust Safety Issues and Needs for Research and Development

“…Since some plasmafacing components will be carbon fiber composites, these explosion tests have included graphite. Explosion testing results (Denkevits & Dorofeev 2005) are more or less consistent with those described in the preceding section: nominal 4 μm dust in air could explode at concentrations of 125 to 500 g/m 3 A graphite dust explosion experiment, funded by the Nuclear Energy University Program in support of VHTR safety is presently under construction at the University of Idaho. Data are not yet available from this experiment.…”

Dust explosions–Cases, causes, consequences, and control

“…It has been shown that the former is close to the critical size below which vessel size begins to seriously influence the explosibility measurements and above which such influence is less pronounced. A large number of studies continue to be done on the comparison of results obtained with 20 l and 1 m 3 vessels [7,[53][54][55][56][57][58] and the 20 l sphere is being used increasingly as a standard with or without minor modifications in the apparatus introduced by Siwek [59][60][61][62]. In the spherical vessels the ignition source is located in the centre of the sphere and the dust is injected from a separate container (Fig.…”

Potential explosion hazard of carbonaceous nanoparticles: screening of allotropes

“…Explosion studies have also been conducted on several pure carbon systems: carbon blacks [26–28] and graphite [29–30]. For most of these materials, P max ~ 6 – 8 bar, K St ~ 10 – 140 m-bar/s, MEC ~ 40 – 150 g/m 3 , MIT ~ 650 – 900°C, comparable to the coals; a nonrigorous lower bound of MIE ~ 1 mJ would be considerably lower than that of the coals.…”