...
Two target sub-systems use LCW (Low Conductivity Water) for cooling.
1. Helium Liquefier System (UVA-QT): see QT System Manual for more details.
2. Roots pump-system: see Pumps System Manual for more details.
The nominal values (as of 01/06/2024):
| Parameter | Avg. Value |
|---|---|
| Inlet Pressure | ~ 65 psig |
| Outlet Pressure | ~ 48 psig |
| Inlet Temperature | ~ 79 Fahrenheit |
| Outlet Temperature | ~ 89 Fahrenheit |
IMPORTANT: if you notice there is no LCW flow, then notify the Target Expert IMMEDIATELY, to stop the coldhead compressors and the roots pumps.
Also, if you notice any of the following you will have to coordinate with the Target Expert to perform the later mentioned steps.
* Lower inlet pressure
* Higher inlet temperature
If you are on the cryo-platform, take the stairs (towards the lower level) and stop mid-way when you see these gauges towards the east wall of the hall.
You will see labels ”LCW Supply” and “LCW Return” on those two separate piping.
Both “LCW Supply” and “LCW Return” have a pressure gauge and a temperature gauge.
The nominal values (as of 01/06/2024):
...
...
The nominal values for the outlet LCW temperatures from the QT coldhead compressors should be below 100 Fahrenheit (see the image below)
If you notice this increase above 105 Fahrenheit, then the coldhead compressors will can be tripped soonat any time, so coordinate with the Target Expert on Shift.
The nominal values for the LCW for the roots pumps system should be as shown in the following pictures.
Location: at the roots-pumps (cryo-platform: westbound)
...