A number of dusts are combustible and so can pose a hazard in a confined space if an ignition source is provided.
Combustible dusts can be divided into:
(1) nonconductive
(2) conductive, which may be significant if exposed to electricity or static electricity
Nonconductive dusts include:
(1) dust from dried grains
(2) pulverized sugar
(3) pulverized cocoa
(4) dried egg powder
(5) dried milk powder
(6) pulverized spices
(7) starch
(8) potato
(9) wood flour (finely ground wood cellulose)
(10) oil meal
(11) dried hay
Conductive dusts include metals such as:
(1) magnesium
(2) aluminum
The risk may be reduced if:
(1) the material is wet
(2) the atmosphere has low oxygen or a fire suppressant
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Specialty: Emergency Medicine, Critical Care
