Hall D Maintenance Status Long Description

Click the Last Maintenance date to update when the last maintenance was performed

Click the Task to EDIT the long description of this task

Click here to add a new item to the Hall D maintenance maintainer

TASK Primary Contact Secondary Contact PERIOD (days) NEXT MAINTENANCE LAST MAINTENANCE
Pump out Saguaro keithb@jlab.org dallen@jlab.org 360 08/14/25 08/19/24

Check insulating vacuum at Helium Relief Tree and pump down to <1.0 mtorr. 8/28/2019 Pump down insulating vacuum on helium transfer lines to <2.0 mtorr and pump down insulating vacuum on helium tree,nitrogen vent and helium warm return using turbo cart to <.1 mtorr. 10/22/2020 pump down Saquaro , helium transfer lines and U tubes insulating vacuum. 1/20/22 pump down all insulating vacuum lines. 3/22/22 Pump nitrogen insulating vacuum because the outer metal was cold and sweating. 8/19/2024 Pump out all CVI fittings on transfer lines with Ryan and Brandon. Training about fitting function and vacuum pump down process.