Based on the FNAL "Approved" procedure on https://seaquest-docdb.fnal.gov/cgi-bin/sso/ShowDocument?docid=10355
Demonstrational Video (Note: Please ignore the Steps with the "Iron Cage" as it was replaced with a storage cabinet in the very recent approved-version):
https://drive.google.com/file/d/18QMZcQo55Yr2iqhSTFtNA3yn9LO8JOMZ/view?usp=sharing
Checklist for Unloading the insert without NH3/ND3
| Item # | Location | Check Item |
|---|---|---|
| 1 | Control room area | Notify the Target Expert, the run coordinator, and the FNAL RCT team Is the FNAL RCT team available to access the cave with you? Discuss the work plan with everyone going to make the access. Pickup NM3 and NM4 keys |
| 2 | Control room area | Close the Gate Valve (GV), and the GV-Bypass valve |
| 3 | Control room area | Ensure the target lifter is in the bottom position |
| 4 | Control room area | PPE: Cryo-gloves PPE level 3 (Tyvex suit, gloves, shoe covers) |
| 5 | Control room area | Ensure that the TO has a walkie-talkie to communicate and stay in the control room to monitor the system |
| 6 | Control room area | Have you had a job briefing with everyone in the access team? |
| 7 | Material handling station | Are the cart, collar+screws, insert-handle, and two nuts for the insert-handle ready? |
| 8 | Material handling station | Do you have the wrench to disconnect the microwave? and also a 3/16 wrench in case NMR connectors are tight? There should be a plastic bag (which contains those tools) hanging on the cart. |
| 9 | On the way to NM3 | Turn ON the ODH fans |
| 10 | In-cave (before unloading) | OPEN the two hand valves on the backfill panel to backfill the fridge. Ensure the pressure gauge is increasing to 0 psig (atmospheric pressure). Confirm the gHe flow coming out from the 0.5 psig relief valve with your hand. |
| Disconnect the NMR cables and waveguide and place those away from the fridge with care. | ||
| 11 | In-cave (before unloading) | Do you have a banc-off flange, and an extra seal ready? |
| 12 | In-cave (before unloading) | Install the insert handle, and connect the hook to the insert's eyebolt. |
| 13 | In-cave (before unloading) | Disconnect the microwave wave-guide and NMR cable(s) and arrange them properly |
| 14 | In-cave (before unloading) | Have you checked the 0.5 psig relief valve's venting? |
| 15 | In-cave (unloading) | Unload the insert from the fridge |
| 16 | In-cave (after unloading) | Properly close the fridge using a banc-off flange and a seal |
| 17 | In-cave (after unloading) | Have you closed the two hand valves on the backfill panel? Have you confirmed whether the blanc-off and its seal closed the fridge properly? |
| 18 | On the way back from NM3 | Have you turned OFF the lights in the cave? |
Checklist for Loading the insert without NH3/ND3
| Item # | Location | Check Item |
|---|---|---|
| 1 | Control room area | Notify the Target Expert, the run coordinator, and the FNAL RCT team |
| 2 | Control room area | Close the Gate Valve (GV), and the GV-Bypass valve |
| 3 | Control room area | Is the fridge level below 20%? If not, bring it down below 20% using the annealing heat |
| 4 | Control room area | Ensure the target lifter is in the bottom position |
| 5 | Control room area | PPE: |
| 6 | Control room area | Ensure that the TO has a walkie-talkie to communicate and stay in the control room to monitor the system |
| 7 | Control room area | Have you had a job briefing with everyone in the access team? |
| 8 | Material handling station | Are the insert, cart, collar+screws, insert-handle, and two nuts for the insert-handle ready? |
| 9 | Material handling station | Do you have the wrench to disconnect the microwave? and also a 3/16 wrench in case NMR connectors are tight? There should be a plastic bag (which contains those tools) hanging on the cart. |
| 10 | On the way to NM3 | Turn ON the ODH fans |
| 11 | In-cave (before loading) | Connect the hook to the insert's eyebolt |
| 12 | In-cave (before loading) | OPEN the two hand valves on the backfill panel to backfill the fridge. Ensure the pressure gauge is increasing to 0 psig (atmospheric pressure). |
| 13 | In-cave (before loading) | Do you have an extra seal ready? |
| 14 | In-cave (before loading) | Have you checked the 0.5 psig relief valve's venting? |
| Wear cryo-gloves | ||
| 15 | In-cave (before loading) | Open the fridge banc-off flange and take off the seal. |
| 16 | In-cave (loading) | Load the insert |
| In-cave (loading) | Place the seal and install the clamp, and after that you can remove the cryo-gloves, and connect NMR cables and/or microwave wave-guide | |
| 17 | In-cave (after loading) | Have you closed the two hand valves on the backfill panel? Have you confirmed whether the insert-top with the seal closed the fridge properly? |
| 18 | On the way back from NM3 | Have you turned OFF the lights in the cave? |
Checklist for Unloading the with NH3/ND3
| Item # | Location | Check Item |
|---|---|---|
| 1 | Control room area | Notify the Target Expert, the run coordinator, and the FNAL RCT team Is the FNAL RCT team available to access the cave with you? Discuss the work plan with everyone going to make the access. Pickup NM3 and NM4 keys |
| Control room area | Fill the LN2 tub, and blue transport dewar, and have some LN2 in the portable handheld dewar at the material handling station | |
| 2 | Control room area | Close the Gate Valve (GV), and the GV-Bypass valve |
| 3 | Control room area | Ensure the target lifter is in the bottom position |
| 4 | Control room area | PPE: Cryo-gloves PPE level 3 (Tyvex suit, gloves, shoe covers) |
| 5 | Control room area | Ensure that the TO has a walkie-talkie to communicate and stay in the control room to monitor the system |
| 6 | Control room area | Have you had a job briefing with everyone in the access team? |
| 7 | Material handling station | Ensure the following things are ready cart collar+screws insert-handle and two nuts insert-handle blue transport dewar with LN2 |
| 8 | Material handling station | Do you have the wrench to disconnect the microwave? and also a 3/16 wrench in case NMR connectors are tight? There should be a plastic bag (which contains those tools) hanging on the cart. |
| 9 | On the way to NM3 | Turn ON the ODH fans |
| At NM3 | One person should go to the cave while the other person connecting the blue transfer dewar with LN2 to the hook at NM3. | |
| In-cave (before unloading) | Place the blue transport dewar with LN2 on top of the magnet cryostat so you can quickly submerge the target cups as soon as the insert is taken out. | |
| 10 | In-cave (before unloading) | OPEN the two hand valves on the backfill panel to backfill the fridge. Ensure the pressure gauge is increasing to 0 psig (atmospheric pressure). Confirm the gHe flow coming out from the 0.5 psig relief valve with your hand. |
| In-cave (before unloading) | Disconnect the NMR cables and waveguide and place those away from the fridge with care. | |
| 11 | In-cave (before unloading) | Do you have a banc-off flange, and an extra seal ready? |
| 12 | In-cave (before unloading) | Ensure that you have your cryo-gloves ready but don't wear them until you are done with this step and the next step Install the insert handle, and connect the hook to the insert's eyebolt. |
| 13 | In-cave (before unloading) | Disconnect the microwave wave-guide and NMR cable(s) and arrange them properly |
| 14 | In-cave (before unloading) | Have you checked the 0.5 psig relief valve's venting? |
| In-cave (before unloading) | Wear cryo-gloves | |
| 15 | In-cave (unloading) | Unload the insert from the fridge and submerge the target cups as soon as the insert is taken out. |
| 16 | In-cave (after unloading) | Properly close the fridge using a banc-off flange and the seal, and you can then remove the cryo-gloves |
| 17 | In-cave (after unloading) | Have you closed the two hand valves on the backfill panel? Have you confirmed whether the blanc-off and its seal closed the fridge properly? |
| In-cave (after unloading) | Move the insert to NM3 carefully using the crane system and attach it to the cart with the collar and screws. | |
| 18 | On the way back from NM3 | Turn OFF the lights in the cave |
Checklist for Loading the insert with NH3/ND3
| Item # | Location | Check Item |
|---|---|---|
| 1 | Control room area | Notify the Target Expert, the run coordinator, and the FNAL RCT team |
| 2 | Control room area | Close the Gate Valve (GV), and the GV-Bypass valve |
| 3 | Control room area | Is the fridge level below 20%? If not, bring it down below 20% using the annealing heat |
| 4 | Control room area | Ensure the target lifter is in the bottom position |
| 5 | Control room area | PPE: |
| 6 | Control room area | Ensure that the TO has a walkie-talkie to communicate and stay in the control room to monitor the system |
| 7 | Control room area | Have you had a job briefing with everyone in the access team? |
| 8 | Material handling station | Are the insert, cart, collar+screws, insert-handle, and two nuts for the insert-handle ready? |
| 9 | Material handling station | Do you have the wrench to disconnect the microwave? and also a 3/16 wrench in case NMR connectors are tight? There should be a plastic bag (which contains those tools) hanging on the cart. |
| 10 | On the way to NM3 | Turn ON the ODH fans |
| 11 | On the way to NM3 | Have you installed the insert handle, and connected the hook to the insert's eyebolt? |
| 12 | In-cave (before loading) | OPEN the two hand valves on the backfill panel to backfill the fridge. Ensure the pressure gauge is increasing to 0 psig (atmospheric pressure). |
| 13 | In-cave (before loading) | Do you have an extra seal ready? |
| 14 | In-cave (before loading) | Have you checked the 0.5 psig relief valve's venting? |
| 15 | In-cave (before loading) | Open the fridge banc-off flange and take off the seal. |
| 16 | In-cave (loading) | Load the insert |
| 17 | In-cave (after loading) | Have you closed the two hand valves on the backfill panel? Have you confirmed whether the insert-top with the seal closed the fridge properly? |
| 18 | On the way back from NM3 | Have you turned OFF the lights in the cave? |