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CPAC NeSSI Focus Group May 3, 2004

This focus group agenda discusses de facto preferences for SP76 technology, including back panel marking and comprehensive component identification. The agenda also covers updates on DOE activities and the roll-out of the NeSSI Knowledge Network website.

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CPAC NeSSI Focus Group May 3, 2004

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  1. CPAC NeSSI Focus GroupMay 3, 2004 • Focus Group Agenda • Dave Veltkamp – Roll Out of NeSSI Knowledge Network website (30 min) • discussion • John Mosher – Update on DOE activities (10 min) • discussion • Rob Dubois – Some de facto preferences for SP76 technology (20 min) • slides and discussion

  2. Some De Facto Preferences for SP76 Technology May 3, 2004 CPAC, Seattle, WA

  3. de facto spacing & back panel marking A preferred practice would be to leave spaces between substrate rows and columns in multiples of SP76 blocks. e.g. 1.53”, 3.06”, etc. By this means the back plate can be pegboard drilled and tube to block connectors may be built in standard multiples to span open spaces.Tagging the back panel as illustrated is also helpful to the End User.

  4. Consider substrate flow marking Here is an example where one manufacturer marks his substrate to indicate the flow paths. This may not be feasible in some cases but is shown as one way to demonstrate flow.

  5. helium leak check channel useful Some manufacturers provide this channel. We think that this is a good idea.

  6. SM component leak check port Some manufacturers provide helium check ports on their components. We believe that this is a good idea. Do you plan to do this with your SM components?

  7. We like comprehensive SM component identification Some surface mount components incorporate extensive indelible tagging. Having material of construction, serial number, manufacturer name and logo, model number, material traceability, pressure rating, directional arrows, inlet/outlet etc. are all very helpful to the End User.

  8. End User tagging & replaceable tags Consider some way to add End User tagging e.g. AFL-001 (and variable information i.e. filter element size) to the SM component. Needs to be non-permanent. Adhesive tags may be ideal. Wired on tags are not acceptable.

  9. Combi-Valve Interfaces combi- valve A Standard Interface (close-coupled) between pneumatic actuator and electrical operator would be desirable.

  10. Further thoughts… • Enclosure Mounting. Use flexible metallic hoses between substrate and enclosure bulkheads/tube entries • must be low cost/light weight • eliminates the need for any tube bending • SAE fittings are useful for angle connectors esp. on solenoid/pneumatic valve connections • low cost flow switch which operates in both vertical and horizontal positions • require more items on substrate incl. close coupled or on substrate pumps, coolers, coalescers… • as a de facto requirement use the "center position” hole as the INLET for surface mounted components

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