Page 557 - Dust Explosions in the Process Industries

524 Dust Explosions in the Process Industries

SPRING-LOADED
COVER FOR OPENIN
GIVING ACCESS TO
CYLINDER

PAPER SHEET LINING
FOR COLLECTING AND
WEIGHING OF DUST
TRAPPED IN TRAVERSING
t CoMPRESSED CYLINDER

Figure 7.47 A 75 liter Nordtest Fire 0 7 7 vessel equipped with traversing cylinder for measuring local
dust concentration in the vicinity of the ignition source (From Nordtest, 7 989).

+

CUP

Figure 7.48 Principle of Nordtest Fire 0 7 7 dust cloud sampling cylinder (b) compared with that of
a simple cylindrical cup (a).