8565558627

DUST HAZARD IN HARD COAL MINING - A MODEL OF PURPOSEFUL SAFETY TECHNICS

S u m m a r y

In accordance with the obligatory industrial safety regulations the primary aim of a mining activity is the extraction of coal without hazards, whereas accidents, occupational diseases as well as materiał damages, de-fined    in short    as    harmfulness, are an undesirable    finał effect    of this

activity.

It    has been    assumed that the parameters of the    work environment and

the results of    the    activity are decisive about the occurrence of    accident

and health hazards as they comparision with the obligatory safety levels (at the present stage of knowledge of absolute hazard), determine the condition of relative hazard in the work environment.

Prior to the occurence of harmfulness in a mining plant (ZG), it is possible to distinguish three phases of the possible seąuence of events:

-    no-hazard phase (BZA), which is determined by the accepted safety levels PB^, in which industrial safety is realized,

-    phase of coventional hazard (ZaU), characterized by safety deficiency on

the    part of    the    parameters of work environment    or/and human    factors

without temporary possibility of direct harmfulness,

- phase of fuli hazard (ZaP), characterized by the occurence of safety deficience with temporary possibility of harmfulness.

On account of the occurence, in the work environment, of undesirable indirect effects, decisive about harmfulness, the achievment of the .primary aim requires the undertaking, in all phases of the possible sequence of cvents, of indirect aims (chapter 4).