You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 39 Next »



Operational Settings: QT_Operational_Settings.pdf


Procedures

  1. Shut Down and Restart Procedures
  2. Filling LN2 on Purifier Dewar
  3. QT System Starting Procedure
  4. Liquefier Cleaning when Dewar contains LHe
  5. Cleaning QT purifier Helium-space (pumping-purging the purifier)
  6. Cleaning QT purifier LN2 space
  7. Fixing dewar level indicator (related to (9))
  8. LHe Dewar cleaning procedure
  9. Cold-helium Circulation Procedure (Cooldown Transferline)
  10. Cleaning gHe outside tank using the purifier
  11. Resolving Liquefier Blocking Alarm when Liquefier is on Liquefy Mode
  12. Resolving Liquefier Blocking Alarm when Liquefier is on Idle Mode
  13. Purifier LN2 Fill Procedure-updated-labels.pdf ( Please use this updated one, or the original one on docdb 10337 by Jordan Bohn)
  14. LN2 Shield Fill Procedure-updated_labels.pdf( Please use this updated one, or the original one on docdb 10337 by Jordan Bohn)
  15. LHe fill procedure using a QT dewar
  16. LHe fill procedure using a commercial dewar
    Important Cooldown > Liquefying modes information
  17. QT Dewar Cooldown Mode from Room Temperature


Useful information

  1. The volume of an outside gHe tank: 1600 cubic feet
  2. 100 slm rate on Magnet FC is equivalent to ~ 192 LHe liters per day (i.e. assuming both LQ A and B are running)
  3. QT recommendation to keep system minimally pressurized: ~20 psi
  4. Running from 40 psi down to 20 psi would produce about 80 liquid litters and we should be able to do that in about 10 hours (assuming both LQ A and B are running).
  5. HR3.docx


The following page contains information on the transfer efficiency study

LHe Transfer Efficiency


To check LCW parameters: https://e906-gat1.fnal.gov/data-summary/e1039/slow-cont-acnet.php 
(click on NM4LCW or select  )

To check HMI parameters: https://e906-gat1.fnal.gov/data-summary/e1039/target-QT-HMI.php  (select:

P&IDs
P504 HR3 P&ID 20191209 SSG.pdf
P504 P&ID (AO) Feb 26, 2020 -reprint.pdf


Manuals

  1. Helium Compressor Manual.pdf
  2. Cold_Head_Hot_Swap_Procedure.pdf
  3. prosense_qps.pdf


Items-Purchased

  1. https://www.automationdirect.com/adc/shopping/catalog/process_control_-a-_measurement/pressure_sensors/pressure_transmitters/spt25-20-v30d
  2. https://www.automationdirect.com/adc/shopping/catalog/cables/pneumatic_solenoid_valve_cables_-a-_connectors_(square_din_style)/8mm_(din_43650c)/sc8-5t




  • No labels