LABOR PROTECTION

摘要

The standard approaches to evaluating the explosiveness of dust composed of solid natural fuels - the methods developed by the Central Boiler and Turbine Institute (TsKTI) [1], the association Soyuztekhenergo [2], and the All-Russian Institute of Heat Engineering (VTI) together with the Ural Institute of Heat Engineerng (UralVTI) [3] - are based on the determination of different empirical characteristics of explosiveness that are calculated using data from an elemental and/or technical analysis of the given fuel. The value of the characteristic - called the explosiveness coefficient K_e (Soyuztekhenergo), fuel coefficient beta_f (TsKTI), explosiveness index B_(20)~e (UralVTI), or combustibility index K_a (VTI) - is used as the basis for different schemes that classify solid natural fuels according to the explosion hazard they present:- Soyuztekhenergo, groups: 0 - nonexplosive; I - low-explosive; II - medium-explosive; III - high-explosive; IV - superhigh-explosive;- TsKTI, classes: 1- brown coal, peat, schale, lignite, charcoal; 2 - coals, except for lean coal and coal from the Ekibastuz deposit, both of which constitute a third class; 4 - semi-anthracites and anthracites whose combustible components contain less than 8 percent volatile matter and which cannot be exploded under laboratory conditions;