Tack weld piece in places Plug or off the following lines: Line C on cryomodule upstream end vent here) Line D on cryomodule upstream end (introduce purge here) Confirm that all cryomodule and feedcap/endcap electrical connectors are shorted Verified by ______________________ Establish purge, and purge until the oxygen concentration at the vent falls below 0.2% Weld the downstream line H. Follow WPS and perform in-process inspections. 5K line welding complete Verified by ___________________ Date ___________________ 1 Endcap welding and leak checking 1.7 5K line leak-check Plug/seal the following Cryomodule Line C Feedcap end Cryomodule Line D Feedcap end Cryomodule Line C mini-CF port (install leak detector here) Cryomodule Line D mini-CF port Perform leak check of all newly installed interconnects. No leaks shall be detected on the most sensitive scale of the leak detector with a minimum sensitivity of 10‐9 torr L/s. Leak detector ID ________________ Background ________________ Result ________________ Notes:
Tack weld piece in places Plug or off the following lines: Line C on cryomodule upstream end vent here) Line D on cryomodule upstream end (introduce purge here) Confirm that all cryomodule and feedcap/endcap electrical connectors are shorted Verified by ______________________ Establish purge, and purge until the oxygen concentration at the vent falls below 0.2% Weld the downstream line H. Follow WPS and perform in-process inspections. 5K line welding complete Verified by ___________________ Date ___________________ 1 Endcap welding and leak checking 1.7 5K line leak-check Plug/seal the following Cryomodule Line C Feedcap end Cryomodule Line D Feedcap end Cryomodule Line C mini-CF port (install leak detector here) Cryomodule Line D mini-CF port Perform leak check of all newly installed interconnects. No leaks shall be detected on the most sensitive scale of the leak detector with a minimum sensitivity of 10‐9 torr L/s. Leak detector ID ________________ Background ________________ Result ________________ Notes:
CM2%20interconnect%20procedure%20V5.1.docx