Helium Liquefier (QT) System at NM4

Operational Settings: QT_Operational_Settings.pdf

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Configurations for Cooldown and Production
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Procedures

1. Shut Down and Restart Procedures
2. HR3 operations
3. Filling LN2 to the purifier using a portable Dewar
4. QT System Starting Procedure
5. Liquefier Cleaning when Dewar contains LHe
6. Cleaning QT purifier Helium-space (pumping-purging the purifier).              Cleaning QT purifier Helium-space (OLD)
7. Cleaning QT purifier LN2 space
8. Fixing dewar level indicator (related to (9))
9. Dewar Cleaning Procedure (using the transfer line)
10. Cold-helium Circulation Procedure (Cooldown Transferline)
11. Cleaning gHe outside tank using the purifier
12. Resolving Liquefier Blocking Alarm when Liquefier is on Liquefy Mode
13. Resolving Liquefier Blocking Alarm when Liquefier is on Idle Mode
14. Purifier LN2 Fill Procedure-updated-labels.pdf ( Please use this updated one, or the original one on docdb 10337 by Jordan Bohn)

• • 03 Jun 2023 Now, EV-100-N is not functioning well. So, Jordan recommends using the HCV-13 while playing with EV-100-N. Purifier LN2 Fill Procedure.pdf 

1. LN2 Shield Fill Procedure-updated_labels.pdf( Please use this updated one, or the original one on docdb 10337 by Jordan Bohn)
2. LHe fill procedure using a QT dewar
3. LHe fill procedure using a commercial dewar
   Important Cooldown > Liquefying modes information
4. QT Dewar Cooldown Mode from Room Temperature
5. Bringing the Dewar Pressure down in Liquefy/Idle mode

Useful information

1. The volume of an outside gHe tank: 1600 cubic feet (45306.95 L)
   
2.  The pressure increase in the gHe tank per tube (in the tube trailer) is 10psi (i.e. 10 psi difference per tube)
3. 100 slm rate on Magnet FC is equivalent to ~ 192 LHe liters per day (i.e. assuming both LQ A and B are running)
4. QT recommendation to keep system minimally pressurized: ~20 psi
5. 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).
6. Putting a 2200 psi gas bottle into the system will produce 8 liquid liters per bottle.
7. HR3.docx (It's a copyright of QT-technology. Please do not make it public. )

The following page contains information on the production and transfer efficiency studies

LHe Production Rate Optimization
LHe Transfer Efficiency

To check LCW parameters: https://e906-gat1.fnal.gov/data-summary/e1039/slow-cont-acnet.php 
(click on NM4LCW or select F:NM4LCWFLOW F:NM4LCWP1 F:NM4LCWP2 F:NM4LCWP3 F:NM4LCWT1 F:NM4LCWT2 )

To check HMI parameters: https://e906-gat1.fnal.gov/data-summary/e1039/target-QT-HMI.php  (select:TI502 TI504 TI506 TI508 TI510 for both Liquefier A and B)

Manuals

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

System Logs

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
3. https://aircompressorservices.com/products/kaeser-oil-filter-replacement-6-3462-1
4. https://aircompressorservices.com/products/kaeser-5-gallon-partial-synthetic-oil-replacement-m460-005