Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

1 st WorkshopXIII International Feed Technology SymposiumCategory 2: Ignition sources are avoided in the normal operation and at frequentbreakdownsCategory 3: Anticipated ignition sources are avoided in the normal operation.13 different ignition sources are known [8]. The following ignition sources can beavailable and effective in grain processing plants:electrical apparatus,hot surfaces,flames and hot gases,mechanically generated sparks,stray electrical currents,static electricity,lightning,chemical reactions.In many cases, it is not possible to avoid explosive atmosphere or sources of ignitionwith a sufficient degree. Measures must then be taken to limit the effects of an explosionto an acceptable extent. Such measures areexplosion resistant design,explosion relief,explosion suppression,prevention of flame and explosion propagation.These measures generally relate to migitation of explosions within installations e.g. binsor filters. Equipment and protective systems must comply with Directive 94/9/EC.The comprehensive hazard analysis as well as the necessary measures for achieving theaims of explosion protection have to be compiled in an explosion-protection document.This document has to be kept up-to-date.NEW FINDINGS FOR DUST EXPLOSION RISK ASSESSMENTAT GRAIN PROCESSINGAs the previous state of knowledge on the likelihood of the occurrence of explosive dustairatmosphere was not satisfactorily, the Research Institute of Feed Technology initiateda research project. The aim of this project was the minimisation of dust-explosion riskswhen handling combustible dusts in grain processing plants. An essential pre-conditionfor a reliable risk assessment is the knowledge of diffuse and deducted dustconcentrations, their frequency, duration and changing in concentration over theduration. Topical findings point out that the dusting behaviour of bulk materials can havean influence on the duration and changing in concentration over the duration of a dust-airmix so that its characterisation for typical compound feeds, macro and micro15