Image Added

Operational Settings: QT_Operational_Settings.pdf

______________________________________
Configurations for Cooldown and Production
--------------------------------------------

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 (V = 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 Checking 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 Checking HMI parameters: https://e906-gat1.fnal.gov/data-summary/e1039/target-QT-HMI.php

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

Maintenance Procedures

  (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 Cleaning QT purifier Helium-space from the top of the purifier Dewar (This needs to be done periodically because the purifier will be blocked by the contaminants from regular air)
   a) Change the operation to "Manual" + "Run" mode, and close the SV01 and SV03 valves: also close the BV02 hand valve and REGX regulator on the liquefier manifold
       Image Removed
   b) Make sure to boil off and vent all the LN2 before the pumping-purging procedure. Use the heater if necessary (tap on the small bar located bottom of the purifier sign: orange color indicates that heater is ON).
       Image RemovedImage Removed
   c) Connect the pump to the outlet from V10a (currently we use the Edwards pump which is connected to the Helium recovery manifold pipe) with a pressure gauge, hand valve, and a Helium gas bottle (to backfill).
        Keep the V9a closed during pumping and purging.
       Image RemovedImage Removed
     Cleaning QT purifier Helium-space including the HR3 compressor lines up to the manifold
   

   1) Open V9a and V21a from PLC
       Image Removed

   2) keep V30 hand valve closed
       Image Removed

   3) Keep BV02 & RegX hand valves (going to/from liq A, B) closed
        Image Removed

   4) Open SV01 and SV03 (Note: if the valves are not opening via PLC, then check whether the system is in Manual + Run mode, if not select that mode to open SV01 and SV03)
        Image Removed
       

   5) Pump down using the setup that we just installed on the Vent.
        Image Removed

   6) Opening hand valve V30 slowly increases the pump sound (takes a couple of seconds to respond due to the long path to reach the pump)
        See the above picture in step 2