December 2015 www.chemengonline.com 12 Improving Cost Estimates From Start to Finish Point-Level Switches 43rd Kirkpatrick Award Winner Announced Combustible Dust Standard Avoiding Hazop Mistakes Facts at Your Fingertips: Water Treatment Plant Revamps Focus on Mixers and Blenders ImprovIng Cost EstImatEs * poInt-LEvEL swItChEs voL. 122 no. 12 dECEmbEr 2015http://www.chemengonline.com