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  RH-ISAC, Page 20 of 138  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Category Type Module Target/Number Subject
  2378   Monday, October 17, 2022, 08:07 David WangITE/ITWRepairTM4 A small leak on target station secondaryvacuum back up line by ITH MP1S.
A small leak in target station secondary vacuum back up line is observed. It affects ITH CG2S,CG1S and CG4SA. Current draw on TP1s and TP4S is getting higher(above 1A) because of it. An internal leak in ITH MP1S is suspected by first round investigation. Close watching on system and further investigation are needed.
Initial Action Taken: none

17-Oct-2022 Comment by David Wang: On OCt 14th, Replaced a flexible hose on MP1S pump exhaust port,but did not solve the issue. High frequency vibration was sensed by hand on MP1S pump inlet and outlet ports. Pump height and position in pit are adjusted slightly in pit to reduce vibration. After, ITHCG2 and ITW CG4SA got a huge improvement in past 3 days. All back up line pressure are stabilized at normal operation status. Still, close watching on this issue is needed to ensure the present status is stabilized in long term.

The issue was returned after shielding block installation Monday morning at 8:30am. Investigated further,  I temporarily installed a turbopump used cooling fan on MP1s to improve pump heat dissipation. And a room fan is put outside on shielding blocks opening hole to increase air circulation into pit. Since then,  everything is perfect. All secondary turbo pumps current draw is around 0.5 to 0.6A which is the best.  I guess that short duo 10 pump life we observed in past could be related to high pump operation temperature in pit as well. We may increase the pump life if air circulation around the pump could be improved. A permanent solution is needed for it.

  2377   Thursday, October 13, 2022, 09:32 Travis CaveSpent Target VaultStandard Operation SiC#44Spent Target Move

 Spent target move done. The SiC#44 was moved from the north hot cell to the spent target vault. It was placed in pail#275 and placed in spot#4A. It was 42.6mSv/hr when removed from the north hot cell. See attached PDF for further details about the vault.

Please note we will only have two free spots in the vault at the start of the running period after the winter shutdown 2023.

Attachment 1: Target_Index_2022-10-13.pdf
Target_Index_2022-10-13.pdf
  2376   Tuesday, October 11, 2022, 12:39 Frank SongITEStandard OperationTM4C#4Module Connection

 TM4 with Target C#4 was connected in ITE.

Attachment 1: TM4_with_C#4_connection_in_ITE.png
TM4_with_C#4_connection_in_ITE.png
  2375   Friday, October 07, 2022, 14:46 Adam NewsomeSouth Hot-CellDevelopment  Addition of lift table to E-stop circuit

A modification was made to integrate the hot cell's lift table into the E-stop circuit. See work permit I2022-10-07-1

The E-stop mounted on the right side of the small enclosure adjacent to the operator station will now serve to stop the lift table's up and down motion, as well as the turntables up/down and CW/CCW motions. Functionality was checked by B. Webster (electrical services) and A. Newsome.

 

Note: it is recommended next time there is a hot cell entry to inspect whether or not the limit switch specified in the schematic is actually installed. The schematic should be updated to match the drawing.

 

Redlined electrical drawing photo attached to this e-log, and the paper drawing is left inside the lift table's control box. The schematic will be revised based on the redline updates, likes as part of work request #6342 (to integrate this drawing into the turntable controls drawing package).

Attachment 1: ISAC_SHC_Lift_Schematic_updated_20221007.jpg
ISAC_SHC_Lift_Schematic_updated_20221007.jpg
Attachment 2: PXL_20221007_185635660.MP.jpg
PXL_20221007_185635660.MP.jpg
Attachment 3: PXL_20221007_185649720.jpg
PXL_20221007_185649720.jpg
  2374   Wednesday, October 05, 2022, 09:31 David WangConditioning StationStandard OperationTM4C#4HS line helium pressure test. TM4 with C#4 at TCS.

TM4 HS line helium pressure test is done. 70psi helium pressure@ 3XE-8 atm.cc/sec . No leak.

  2373   Tuesday, October 04, 2022, 07:19 Frank SongNorth Hot-CellStandard OperationTM4C#4electrical check

 an electrical was done for TM4 with target C#4 installed on NHC.

Attachment 1: tm4_with_C#4_installed.png
tm4_with_C#4_installed.png
  2372   Monday, October 03, 2022, 14:58 Matthew GareauNorth Hot-CellRepairTM4SiC#43 and C#4Loose multipin guide pin

 Today while I was removing the SiC#43 it was noticed that the multipin guide pin was loose.

This made it difficult to remove the target, and the multipin shoulder bolts removal was required.

With the loose pin it was not possible to attach the multipin for the target C#4.

Chad was able to tighten the multipin guide pin enough, however it became obvious that the pin could not be removed when it was attempted.

With the pin tightened, the target C#4 was installed and all checks were good.

It was recommend that once the C#4 target is removed the TM4 will need some repair to remove the multipin guide pin. 

 

Chad - Also it was noted that the guide pin (ITA6453) in question showed signs of plating or heat (see pictures I've added)

Attachment 1: MicrosoftTeams-image.png
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Attachment 2: MicrosoftTeams-image_(1).png
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Attachment 3: MicrosoftTeams-image_(2).png
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  2371   Monday, October 03, 2022, 14:28 Keith C NgAssembly/Bench TestMaintenance  ITA2826 rev E assembly

A fully built steerer sub assembly ITA2826 revision E was boxed and sealed and put on rack storage in ISAC B2 South Hot Cell area. It is contained in a blue bin and green tag. 

It is advised if this assembly is used, it should be inspected for damage before using in a source tray.

  2370   Monday, October 03, 2022, 09:42 Frank SongITEStandard OperationTM4Sic#44module disconnection

 TM4 with SiC@44 was disconnected in ITE.

Attachment 1: TM4_with_SiC#44_disconnected_in_ITE.png
TM4_with_SiC#44_disconnected_in_ITE.png
  2369   Wednesday, September 28, 2022, 13:15 Matthew GareauNorth Hot-CellMaintenance  topped up the NHC window oil through the oil expansion tank

Myself and Maico were able to top up the NHC window oil.

The oil was filled through the expansion tank

- the Nitrogen line closed and the Nitrogen pressure valve was disconnected to ensure that no oil would go in to them.

- the pressure relief valve was disconnected to act as an air bleed line while we filled the oil

- with a funnel we slowly added the oil until the oil level could be read, showing about half full

- about 1.5 liters of oil were added

- once filled the Nitrogen line was reattached and the pressure was returned to recommended level 

- the remaining oil was returned the RH shop

Now the oil level will be monitored, which will help identify if there is any leak in the system.

Attachment 1: IMG_20220928_121000.jpg
IMG_20220928_121000.jpg
Attachment 2: IMG_20220928_124253.jpg
IMG_20220928_124253.jpg
Attachment 3: IMG_20220928_124258.jpg
IMG_20220928_124258.jpg
  2368   Wednesday, September 28, 2022, 12:58 Matthew GareauNorth Hot-CellRepair  Chad repaired the right operator side manipulator

On 26/Sept/2022

Chad disassembled the right operator side manipulator, and noticed that gears in the handle were quite tight especially when compared to the left operator side manipulator. 

Once a dry grease was added, and the handle reassembled all seemed to be in working order.

There was noticeable wear on a shaft and Chad has suggested to order some spare parts for the wrist and handle. 

Attachment 1: IMG_20220926_091024~2.jpg
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Attachment 2: IMG_20220926_091040.jpg
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Attachment 3: IMG_20220926_091047.jpg
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Attachment 4: IMG_20220926_091153.jpg
IMG_20220926_091153.jpg
  2367   Thursday, September 15, 2022, 11:25 Travis CaveSpent Target VaultStandard Operation UC#38Spent Target Move

 The spent target UC#38 was packed into pail #274 and placed in spot 1A of the vault. It was 33.3mSv/hr when removed from the north hot cell. See attached PDF for more vault details.

Attachment 1: Target_Index_2022-09-15.pdf
Target_Index_2022-09-15.pdf
  2366   Wednesday, September 14, 2022, 13:45 Adam NewsomeSpent Target VaultDevelopment  Storage Vault: cable replaced and e-chain upgrade

The motor cable for the storage vault was replaced as the old one was showing signs of wear. The U-track that the old cable ran through was also bent as a result of being hit.

In the process of replacing the cable, an e-chain was installed for cable management purposes. Mounting brackets were modified and a new U-track was installed as well. The new hardware is more robust than what was previously installed.

The vault door was opened and closed multiple times while observing the e-chain - everything behaved as expected. The system is operational.

 

Solidworks model IRH0189 is updated to show the changes

Attachment 1: PXL_20220914_183329159.jpg
PXL_20220914_183329159.jpg
  2365   Tuesday, September 13, 2022, 14:10 Frank SongITWStandard OperationTM2UCx#39Module Connection

 TM2 with UCx#39 is connected in ITW.

Attachment 1: TM2_with_UCx#39_connection_in_ITW.png
TM2_with_UCx#39_connection_in_ITW.png
  2364   Thursday, September 08, 2022, 09:06 David WangConditioning StationStandard OperationTM2UCx#39HS line helium pressure test.

TM2 with UCX#39 HS line helium pressure test is done at TCS. 70 psi helium 3minutes. No leak @0.0XE-9 atm.cc/sec.

  2363   Thursday, September 08, 2022, 07:20 Frank SongNorth Hot-CellStandard OperationTM2UCx#39electrical check

 An electrical check was done on NHC yesterday.

Attachment 1: TM2_with_UCx#39_E_Check.png
TM2_with_UCx#39_E_Check.png
  2362   Tuesday, September 06, 2022, 14:05 Frank SongNorth Hot-CellStandard OperationTM2UCx#38electrical check after disconnection

 An electrical was done on the NHC for TM2 with spent Target UCx#38 on

Attachment 1: TM2_electrical_check_on_NHC_with_spent_UCx38_on.png
TM2_electrical_check_on_NHC_with_spent_UCx38_on.png
  2361   Tuesday, September 06, 2022, 13:58 Frank SongITWStandard OperationTM2UCx#38module disconnection

 TM2 with Target UCx38 was disconnected in ITW and moved to NHC

Attachment 1: TM2_with_UCx38_disconnection_in_ITW.png
TM2_with_UCx38_disconnection_in_ITW.png
  2360   Tuesday, August 23, 2022, 11:33 Carla BabcockITERepair  ITE:ANODE swapped with TCS:ANODE

ITE:ANODE supply reading strange currents - 17mA with the power supply on and no voltage. Checked anode circuit from electrical room:

Anode wire in electrical room shows 0L at 250V

Circuit with 50kOhm resistor mostly looks good (49-52kOhms) but a couple times read 28kOhms, no idea why. Tried jiggling all cables, unplugging and replugging and everything looks fine.

But power supply still seems to be giving out signal for 17mA readback. Decided fastest to swap with TCS power supply and troubleshoot this one on the bench.

  2359   Tuesday, August 23, 2022, 10:51 Carla BabcockITERepairTM4SiC#44TBHT to HV common short on SiC#44-TM4

TM4 with SiC#44 installed developed a short TBHT to HV common during its first heating in ITE. Was fine before installation. Now with everything cold TBHT to HVC is 25kOhms. Removed short in electrical room, will rely on short in the module.

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