Preliminary hazard analysis characteristics

The preliminary site plan characteristic analysis and hazard assessment should be performed by an experienced and trained technician before entering the site. A more detailed site evaluation and analysis must be done to establish the necessary engineering controls and personnel protective equipment. All potential hazards must be identified and evaluated and an air... 

As a result, a functional hierarchy develops in which malfunctions of the lower hierarchy influence the upper functional hierarchy. Similarly, within one horizontal functional level there are reciprocal influences. This is why a hierarchical function stmcturing is recommended before a hazard and risk analysis, in order to be able to describe potential malfunctions. Any changes of the functional architecture, their implemented environment and of course their characteristics, could lead to new or other malfunctions and consequently change the result of the Hazard Analysis and Risk Assessment. This is a further indication why in many industries the word preliminary is attributed to this analysis or mentioned in its name. 

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