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NeSSI  : An End to the Mythology

NeSSI  : An End to the Mythology. Rob Dubois CPAC/NeSSI Workshop Seattle, Washington, USA November 9, 2006. Gen III. uAnalytical. Gen II. Electrical Networked & Smart. Gen I. Fluid Components. Where are we?. 2008-2012. 2004-08. Winston Churchill. END USER VALUE. 2000-04.

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NeSSI  : An End to the Mythology

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  1. NeSSI: An End to the Mythology Rob Dubois CPAC/NeSSI Workshop Seattle, Washington, USA November 9, 2006

  2. Gen III uAnalytical Gen II Electrical Networked & Smart Gen I Fluid Components Where are we? 2008-2012 2004-08 Winston Churchill END USER VALUE 2000-04 "This is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning."

  3. Sample Systems: an anachronism in an ocean of automation. Carbide Plant, Schkopau, Germany c. 1959 (Site now owned by Dow Chemical) What has changed?

  4. Industry Mantra • 80% of process analytical reliability issues are due to the sample system. Why? • Poor understanding of sample integrity • plugged, leaking, fouled, flow stopped? • Poor understanding of sample temperature • condensing, frozen, two-phase? • Poor understanding of sample pressure • vent header influences on analytical results • Low degree of automation

  5. An End to the Mythology • sample systems have to be large • sample system control needs to be done in the DCS • visual flow indicators are required • the need for maintenance “rounds” • an analyzer house is needed

  6. An End to the Mythology • No need for Sample Handling System (S.H.S.) automation • Thermostats are good enough • The inside of an enclosed space carrying flammables is Division/Zone 2 • The use of conduit/seals inside S.H.S. • The continued use of 4-20 mA systems

  7. located very near or on the sample point extractive sampling fully automated (“smart”) environmentally self-contained (no house) tight integration of analytical & sampling uses two orders of magnitude less sample includes a disposal method for used sample By-Line Analysis- a new mini Sampling technique for micro Analyzers Next Step

  8. NeSSI - Score Card • A digital bus (Gen II) tailored to meet the requirements of process analytical • Smart SHS functionality defined • Major NeSSI project(s) on the books • Automation and reliability linked • Generation I proven and accepted • We have set in motion a fundamental and permanent change in how we do process analytical

  9. A Final Thought • “When men got structural steel, they • did not use it to build steel copies • of wooden bridges.” • Ayn Rand. Atlas Shrugged. 1957.

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