1 / 17

LST Gas System

LST Gas System. R. Messner May 2004 Readiness Review. Will cover a few of the items below. Gas Mix – the issue of what gas mixtures will be allowed in the LST system has been resolved FHA: O’Neill, Budnick HEEC review Gas Mixing System In leak test Want to test output flows ASAP

Télécharger la présentation

LST Gas System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. LST Gas System R. Messner May 2004 Readiness Review

  2. Will cover a few of the items below • Gas Mix – the issue of what gas mixtures will be allowed in the LST system has been resolved • FHA: O’Neill, Budnick • HEEC review • Gas Mixing System • In leak test • Want to test output flows ASAP • Integrate with the GIB • Gas Interrupt Box (GIB) • Finished with checkout • Had found problems with firmware; fixed • IR-2 Distribution Panels • Flow restrictor in hand, checked out • Gas Supply Manifolds • Next to be assembled • Gas Shack Safety System Expansion underway • Electrical • External Monitor System

  3. Gas Mix Instead of getting a specific mix approved, we want approval for a region of mixes

  4. Gas MixThe operating region takes into account the stability we have seen in the RPC system

  5. Mixing System Functionality A fourth mass flow meter can provide a tie-breaking vote in case of MFM/MFC disagreement Can also pick up small drifts in mixed gas flows Shut-off solenoids will close if the gas mix drifts out of the allowed region

  6. Gas Rack - in leak test

  7. Gas Rack

  8. Gas Interrupt Box Functionality

  9. GIB in checkout

  10. Overview of the IR-2 Distribution

  11. Silica tubing flow resistor

  12. Check of silica tubing flow resistance

  13. Gas Shack Layout Two new inert gas supplies; Each will have a shutoff valve, orifice, overpressure releases Construct a new isobutane supply rack and manifold; Will have two isobutane shutoff valves, orifice

  14. Summary • The loose ends involved in determining a permissible gas mix have been resolved • Very close to having a functional mixing system with its monitor system to ensure a non-flammable and a runnable mix • Use air or nitrogen, check the self consistency and stability of system • It is important to keep moving ahead; sufficient and timely technical support is critical • Want the gas rack in the gas shack before the end of May • Delayed a bit because we want to get the manifolds done first; then we can do more things in parallel • Expansion of Gas Shack safety system in progress • EPICs monitor system will be the next item to attack

  15. Spare Slides

  16. Looked at the recent performance of the RPC system Snapshots taken a week apart, a half day at a time This is a measure of the stability of the gas mixture +- 0.0005 out of 0.045 Or ~ 1.0 % of the reading

  17. Recent performance of the RPC system Isobutane Fraction in Gas Mixture

More Related