Pressure Resistant Equipment
The best way to contain the primary dust explosion is to have
process equipment that is strong enough to withstand the explosion.
Dust explosion pressures are usually within the range of 5-12bar(g).
Resistance to pressure-shock are different to normal operation
pressures, a pressure-shock will be short lasted as opposed to
high operating pressures which may need to be upheld for months
at a time. Designing the plant item as though it were a pressure
vessel will cause it to be very expensive and beyond what will
probably be called for. Most vessels at risk of dust explosion
are designed so that under the maximum pressure in an explosion
they will distort, but not rupture. Occasionally if the risk of
a dust explosion is very high, the vessel may be built to withstand
the pressure of the entire explosion as though it were continuous.