...
If this pressure reading gets below 45 psig, then IMMEDIATELY check with the Target Expert. You can check this pressure remotely using the strip charts.
https://e906-gat1.fnal.gov/data-summary/e1039/target-all-auto.php
If there is a need to arrange the gHe tube trailer to refill, please follow the steps on How to order LN2 refill to the tank, gHe tube-trailer, LN gHe cylinders, and LN2 portable Dewars at FNAL
Outside Liquid Nitrogen (LN2) tank
If this level is below 24 In.H2O, then please follow the steps on How to order LN2 refill to the tank, gHe tube-trailer, LN gHe cylinders, and LN2 portable Dewars at FNAL to arrange a refill.
Gaseous helium, nitrogen cylinders supplies and Liquid Nitrogen portable dewars supply
There should be at least two cylinders from each gas type (gHe and gN2), and two portable LN2 dewars available at all times.
Please follow the steps mentioned in How to order LN2 refill to the tank, gHe tube-trailer, LN gHe cylinders, and LN2 portable Dewars at FNAL to proceed with ordering.