Chemical Cross Connections,z Bulk pressurized delivery. systems create a need to,cross connect the DI Water. system with various,chemical delivery systems,z Typical arrangements. provide only single,containment,Typical Cross Connection. z Resulting in the potential arrangement,cross contamination of. these interconnected,11 May 09 2009 Malema Sensors. tt solution,z Sometimes we ll add check valves to mitigate. the potential This solution isn,isn tt allowed in,potable water systems because of its. unreliability,3 2009 Malema Sensors,Simplest form of Backflow Prevention. z Simple reliable,inexpensive,It s h your sink,dishwasher avoid. cross connection,z Approved fro use in,Potable water. 4 2009 Malema Sensors,Common Products for Potable Water Systems. Pressure Hose Bib,Backflow Backflow,Preventer Preventer. Irrigation,Preventers,Industrial Reduced Pressure,Backflow Preventer. 5 2009 Malema Sensors,z The MIID product functions as a backflow. preventer in cross connected high purity,critical liquids applications. z Markets serviced include,Semiconductor manufacturing. Pharmaceutical,11 May 09 2009 Malema Sensors,z Backflow prevention utilizing the Double. Block Bleed,Bleed method,z Malema proprietary ultra low level by pass. leak detection,11 May 09 2009 Malema Sensors,Classic Double Block Bleed. Vent Active Open or protective mode,11 May 09 2009 Malema Sensors. Classic Double Block Bleed,Vent Inactive Closed or dispense mode. 11 May 09 2009 Malema Sensors,T i l DI Water,Typical W t Loop. z DI Water Loops like,this exist in most,every wafer fab. z Under normal,circumstances they,work dependably DI Water. 10 2009 Malema Sensors,T i l Tool,Typical T l Connections. z A major usese of DI,Water in any,process tool is for. the safe flushing,and dilution of,chemical piping,systems during. maintenance,operations,11 2009 Malema Sensors,W t Slurry. z If either pump shuts,z The fab level pressure,z Gravity continues. working on the,contained liquid and,the pressure not only. drops but can generate,significant vacuum at,the POU valve Bulk. manifold Sl,12 2009 Malema Sensors,How does the MIID address this problem. z The MIID eliminates these problems,z The design of the MIID prevents back. i h even if a valve,l or valves,Cross Connect manifold leak s. z Th MIID incorporates,The i t a Malema,M l lleakk sensor. that warns of leaking valves before a back,siphonage event occurs and before cross. contamination results,13 2009 Malema Sensors,MIID standing. t di guard,z MIID acts to,prevent cross,contamination. from occurring,z A Malema leak,sensor provides,id Cleanroom Level. a warning prior to,a backflow event,Sub Fab Level,11 May 09 2009 Malema Sensors. Malema Double Block Bleed,Vent Active Open or protective mode.
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4) IEEE 9th Workshop on Multimedia Signal Processing, 2007. MMSP 2007. 5) This article has two well di erentiated parts. In the rst, the authors do a review of the state of the art in multimodal sensor networks. Multimodal networks are made of sensors which acquire data of di erent nature, as sound level, light intensity, or gas levels, for ...
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Secret Sharing and Secure Multi-party Computation Michael Mortensen 1. July 2007 Department of Informatics University of Bergen PB. 7800 N-5020 BERGEN. Preface This thesis explores the di?erent secret sharing schemes from the 1970s until today. We present the schemes and provide descriptions and examples on how they work. More time is devoted to exploring monotone span programs, a ...
