The basics of dust-explosion protection - STAHL - #6

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rlfifinitions and characteristics

2. Definitions and Characteristics

In Table 2, the important chara:;t.3r st its down ring the explosion process of dust are listed. II is necessary to assess your technical procedures in view ot potential ignition sources, volume of explosive dust atmosphere, operating temperature, etc. Subsequently, the potential lor a dust explosion under the current conditions must be evaluated.

The most important terms in dust explosion pro­tection are listed in Table 1 along with their definitions. In Table3, the characteristics of some materials from the various product groups are given. "hitse technic safety iTa'acteiishcs lieve been determined under standard conditions in the laboratory. As a rule, conditions are in practice less likely to lead to an explosion, so that the figures are less alarming.

Be aware thai a general term, such as flour dust, can lead to false assessments. Wheat flour has different Technical safely character stmts Thaa rye flour, for example.

What does the word dust really mean?

The European Standard EN 50281-1-1 defines it

like this:

Dust consists of small solid particles in the atmosphere which settle due to their own weight, but 'a'h rh remain suspended in ai- ir:r a time ■:rhi^ includes dust and grit, as defined in ISO 4225|.