NeSSI ISA Panel Session Notes
October 5, 2004
ISA Expo – Houston, Texas
Moderator
Lloyd Burgess – CPAC
Panelists
Dan Podkulski – ExxonMobil Chemical
Michelle Cohn – UOP
Rob Dubois – Dow Chemical
A. With a Software Configuration tool who designs the analytical system?
-With a software configurationwhich tool which allows the specification of an enclosure, etc. the End User could generate a complete build drawing based on best practice.
-With a software configuration software the End User can see what their design can looks like before it is built.
-Certain design expertise for doing the configuration may not reside with the End User
B. With a “build on your bench” modular concept who builds and tests the sample/analytical system?
-An End User can place order and have someone else (integrator, analyzer mfg., SS mfg) collect parts, assemble and function/leak test as a drop ship package. Performance guarantee can also be negotiated.
-However for quick/in-situ work the End User can build in house from modular parts
-Disadvantage of using the analyzer manufacturer for assembly revolves around situations where different analyzers need to be incorporated
-Difficulty using a SS manufacturer is that they may not be willing to source surface mounted components from competitors who may be technically superior
-Issue today with the higher cost of a sample system supplier doing this since it can result in higher costs - this may be due to no advantaged purchasing of 3rd party components
-non-modular hybrid systems still require skilled assembly which a SS mfg may not be optimized to build
-some learning’s needed on who pays for the Factory Acceptance Test (FAT) - many integrators include this as part of their cost
-some early experiences shows higher costs if a SS manufacturer integrates a system
-interconnections and non-modular nature of enclosures are stumbling blocks
C. Other comments….
-A more completely modular solution reduces costs and simplifies assembly
-Modular systems have been demonstrated to be highly reliable from a leak standpoint. However a good practice for the End User to do a quick leak check prior to install
-Operating experience shows that NeSSI systems have less problem with leaks near and long term. The compact configuration inherently reduces torsion stresses.
-Need to continue to populate the CPAC-NeSSI web site with available components. Manufacturers are encouraged to do so.
-Modular systems can be used for both new systems and for retrofit projects. In many cases it makes sense to upgrade a sample system along with a new analyzer