Page 539 - Dust Explosions in the Process Industries

506 Dust Explosions in the Process Industries

OPERATOR PROTECTING

ECTROOE HOLOER
ETALI

SPARK ELECTRODE
Illi/ __ 7PROTECTING LIO
DUST SAMPLE

Figure 7.30 Cross section of Nordtest apparatus to determine the electric spark ignition sensitivity
of dust layers (From Nordtest, 1982).

IE
Figure 7.31 Nordtest apparatus to determine the
electric spark ignition sensitivity of dust layers: (top)
assembled as in Figure 7.30, (bottom) slidable sup-
porting plate and hole plate removed and shown
separately.