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ID |
Date |
Author |
Category |
Type |
Subject |
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76
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Thursday, December 12, 2024, 15:57 |
Aaron Tam | Hot Cell 1 | Development | Pistons Gas lines exchange |
December 12, 2024 - Chad Fisher, Albert Kong, Aaron Tam
Tests:
Gas lines removal:
- Starting with the most exterior connection, VCR connection loosened off with open ended conventional wrench
- Once loose, the nut can be un threaded with manipulator finger (rolling nut technique)
- Once gas line unhooked, gasket removed by bringing female end outside the service tray footprint and jiggling until the gasket was removed
- Also possible to use a pick if needed
- The same procedure was conducted for the interior VCR connection
Gas lines installation:
- Starting with the inner most connection
- Gasket placed on 3D printed tool and clipped into position on VCR male end
- At first an M10 bolt was inserted into the elbow below VCR connection, but without rotational authority, the makeshift handle is not worth using
- Griping the elbow with one manipulator and rolling the nut onto the threads with the other proved successful
- Nut was tightened using conventional open ended 19mm wrench
Observations/Notes:
- Service Tray was not in a fully connected position, so even less space will be afforded.
- This may affect the ability to get 2 manipulators on the same connection
- Piston modules were missing some limit wires on the side. These constrain movement horizontally and will either need to be removed as part of the procedure or, make the procedure more difficult
- Mass markers and various other connectors not installed, and these could slightly restrict movement as well
- Service tray pin was restricting the movement of the left manipulator during install
- Lighting was inadequate under the piston
Recommendations/follow up items/questions:
- All metal Parker VGR style gaskets to replace plastic retainer versions
- This is so that the degraded plastic doesn't break off and end up in the gas lines (upside down connections)
- A modified wrench with flats for handles and with more length would make the above procedures easier
- Along with raising and lower the service tray, the service tray pin being oriented towards the beam entry direction, would make life easier
- Still need to test gasket install on "other" Piston gas line connection
- Chad will redesign some new gasket tools to be tested
- side load and axial load gaskets, low and high clearance, aluminum construction
- Lighting positioned to flood the service tray area will be needed
- labeling the gas lines with a more permanent solution will be needed
- Once the high voltage feed-through parts have come in, we can re-test and see if the piston module can be lowered to aid in target removal situations
- Aaron will test Parker style seals to see if they can be removed as easily once brought up to specified torque
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December 16, 2024
- Upon inspecting the piston modules on AETE in TISA, we became aware of how the wires are arranged for the limit switches, it may be a good idea to look into how these wires are handled when using the piston module jig.
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Attachment 1: exteriror_gas_line_removal.jpg
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Attachment 2: Finger_rolling_off_nut.jpg
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Attachment 3: gasket_sitting_on_current_tool.jpg
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Attachment 4: Gasket_part_number.jpg
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Attachment 5: Clearance_for_two_manipulator_grippers.jpg
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Attachment 6: Clearance_for_two_manipulator_grippers2.jpg
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Attachment 7: Clearance_for_two_manipulator_grippers3.jpg
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Attachment 8: M10_Bolt_used_in_elbow.jpg
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Attachment 9: Parker_VGR_Gasket_installed.jpg
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Attachment 10: Some_trouble_with_gasket_tool.jpg
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Attachment 11: trouble_with_conventional_wrench.jpg
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Attachment 12: Interior_gas_line_torquing.jpg
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Attachment 13: IMG_0845.JPEG
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77
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Thursday, December 12, 2024, 16:20 |
Aaron Tam | Hot Cell 1 | Development | Extraction Electrode Banana Plug (Show and Tell) |
December 12, 2024 - Chad Fisher, Albert Kong, Aaron Tam, Austin Hagen
Tests:
Loose piece connection and removal
- By hand, the two connections were brought together and removed carefully
Observation/notes:
- Copper extensions are fragile and can bend when removing extraction electrode.
- This makes this part fairly limited in its capacity to be re-used
- Copper extensions will need to be tuned before inserting into hotcell for replacement
Recommendations/follow up items/questions:
- Bigger lead-ins would be appreciated
- What is the exchange frequency?
- the flexible nature of the copper extensions makes re-use limited
- How many connections can we expect from the aluminum fingers?
- Would a closer locating feature specific to the pins help?
December 12, 2024 - Michael Genix, Aaron Tam
- Guide pins for the extraction electrode contact before the banana plugs
- As these pins are low tolerance, this will act as the guiding for the plugs
- Copper extensions have a much smaller diameter than the plugs, so positioning can be less precise in this area
- Exchange frequency is still TBD
- Pin and plug life is still TBD
- Potentially the copper extensions can be tuned in the hotcell
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Attachment 1: Alignment.jpg
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Attachment 2: Alignment_2.jpg
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Attachment 3: Fully_connected.jpg
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Attachment 4: Fully_connected_2.jpg
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Attachment 5: Removal.jpg
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Attachment 6: Removal_2.jpg
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