Show simple item record

dc.contributor.authorBoiarkina, I
dc.contributor.authorDepree, N
dc.contributor.authorYu, W
dc.contributor.authorYoung, BR
dc.contributor.authorWilson, DI
dc.contributor.editorHirschfeld, K
dc.date.accessioned2013-07-04T01:50:52Z
dc.date.available2013-07-04T01:50:52Z
dc.date.copyright2013
dc.date.issued2013-07-04
dc.identifier.citationAustralian and New Zealand Annual Chemical Engineering Conference, Chemeca held at Brisbane Convention Center, Australia, 2013-09-29 to 2013-10-02, published in: Australian and New Zealand Annual Chemical Engineering Conference
dc.identifier.urihttp://hdl.handle.net/10292/5524
dc.description.abstractMilk powder is typically fortified during processing by the addition of several ingredients. At the powder plant studied, one particular ingredient showed significant concentration variation in the final product, of which the causes were not well understood. Hence, a Monte Carlo uncertainty analysis was used to predict the output concentration distribution based on the typical variations of processing conditions observed in the actual plant. The purpose was to find if the observed output variability could be attributed to either variation during processing, due to a poor analytical measurement procedure, or something else. The strategy was also used to quantitatively establish if changes in the operational procedure could further reduce the variation in final product quality. The variation in final quality parameter due to processing conditions was found to be of the same magnitude as the analytical technique, meaning that both contribute to the final product variation, and hence a reduction in processing variability will reduce the overall variation. Furthermore the model suggests that the product is more likely to be out of specification on the upper limit, than on the more important lower limit given typical process variation, which was also seen in the measured results. Thus, powder out of specification above the upper limit is likely to be caused by process variation; however powder out of specification on the lower limit is not. A concrete recommendation from this analysis is that ratio control of ingredient addition was shown to significantly reduce the final product variation, and could prevent out of specification on the upper limit.
dc.publisherChemeca
dc.relation.isreplacedby10292/5724
dc.relation.isreplacedbyhttp://hdl.handle.net/10292/5724
dc.relation.urihttp://www.chemeca2013.com/index.php
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in (see Citation). The original publication is available at (see Publisher's Version).
dc.titleQuantifying product variation in milk powder production using a Monte Carlo analysis
dc.typeConference Contribution
dc.rights.accessrightsOpenAccess
aut.conference.typePaper Published in Proceedings
pubs.elements-id149878


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record