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New entries since:Wed Dec 31 16:00:00 1969
Entry  Monday, June 20, 2022, 11:00, Frank Song, North Hot-Cell, Repair, TM2, SiC#42, Failed Sic#42 electrical measurement at NHC Failed_Sic#42_electrical_measurement_at_NHC.jpg

 An electrical check was done at NHC, see attachment pls.

Entry  Tuesday, June 21, 2022, 15:36, Matthew Gareau, North Hot-Cell, Repair, TM2, SiC#42, SiC#43, multipin guide pin issues 

 While removing the SiC#42 it became apparent that the multipin guide pin had become loose again and was not allowing the target to dismount from the module.

The multipin shoulder bolts were removed and then the multipin was able to be pried off.

However the NHC manipulator were not able to reach the guide pin to remove it, which would be required before the SiC#43 could be installed.

The target module was then moved to the SHC where the guide pin could be removed and the installation of SiC#43 took place, along with the transfer of the parasitic attachment onto the SiC#43.

This problem seems to suggest that the multipin could use some redesign to ensure smoother target exchanges.

Entry  Tuesday, June 21, 2022, 18:43, Frank Song, North Hot-Cell, Standard Operation, TM4, UCx#37, electrical check p2n_ucx37_electrical_check.jpg

 A p2n target in TM4 was electrical measured on NHC. see attachment pls.

Entry  Thursday, June 23, 2022, 07:11, Frank Song, North Hot-Cell, Standard Operation, TM4, Ta#64, electrical check Ta#64.jpg

 New Target Ta#64 was installed on TM4. Electrical measurement result is good. c/w attachment.

Entry  Tuesday, July 19, 2022, 11:53, Frank Song, North Hot-Cell, Standard Operation, TM2, SiC#43 Febiad, electrical check e_check_for_TM2_with_SiC43_Febiad.jpg

 A electrical check was done at NHC, see the pic attached with please.

Entry  Thursday, July 21, 2022, 10:24, Frank Song, North Hot-Cell, Standard Operation, TM2, UCx#38, electrical check TM2_with_UCx38_echeck_on_NHC.jpg

 A electrical check was done for TM2 with UCx#38

Entry  Tuesday, July 26, 2022, 13:50, Frank Song, North Hot-Cell, Standard Operation, TM2, UCx#38, TM2 electrical check with Target and No external Connections TM2_with_UCx38_echeck_on_NHC.jpg

 A standard electrical check was done for TM2 after the short issue be fixed.

Entry  Friday, July 29, 2022, 12:05, Carla Babcock, North Hot-Cell, Repair, TM2, UCx#38, Repair of UCx#38 EE short in ante room 20220726_111649.jpg20220726_111641.jpg

UCx#38 developed a short between the plasma electrode and the extraction electrode about 30mins after reaching full temperature in the conditioning station. The decision was made to bring it into the anteroom and try to clean it there.

To do this, it was uninstalled, the parasitic attachments were removed and it was brought into the ante room.

I removed the EE and the PE, and cleaned quite a lot of material from them both with methanol. I think put the ionizer foil bar down the ionizer to help dislodge any material there, and I also turned the target over and tapped gently to get any material out. The first two times some flakes came out, the third time nothing came out. I then reinstalled the electrodes using the EE alignment tool (not sure how successfully, didn't push it into the ionizer too much because I was worried about catching the Rh foil).

The taret was meggered at 500V then reinstalled and electrical checks were done. Everything looks back to normal. Conditioning in ITW was successful.

Entry  Tuesday, August 09, 2022, 12:23, Frank Song, North Hot-Cell, Standard Operation, TM4, Ta #64, Electrical Check for TM4 with Ta#64 after beam at NHC tm4_with_Ta#64_after_beam_at_NHC.jpg.jpeg

 An electrical check made at NHC right after TM4 moving from ITE.

Entry  Wednesday, August 10, 2022, 08:10, Frank Song, North Hot-Cell, Standard Operation, TM4, Sic#44, electrical and leak check  TM4_with_Sic#44_eletrical_and_leak_check.jpg

 TM4 with Sic#44 installed and had an electrical / leak check at NHC. 

Entry  Tuesday, September 06, 2022, 14:05, Frank Song, North Hot-Cell, Standard Operation, TM2, UCx#38, electrical check after disconnection  TM2_electrical_check_on_NHC_with_spent_UCx38_on.png

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

Entry  Thursday, September 08, 2022, 07:20, Frank Song, North Hot-Cell, Standard Operation, TM2, UCx#39, electrical check TM2_with_UCx#39_E_Check.png

 An electrical check was done on NHC yesterday.

Entry  Wednesday, September 28, 2022, 12:58, Matthew Gareau, North Hot-Cell, Repair, , , Chad repaired the right operator side manipulator IMG_20220926_091024~2.jpgIMG_20220926_091040.jpgIMG_20220926_091047.jpgIMG_20220926_091153.jpg

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. 

Entry  Wednesday, September 28, 2022, 13:15, Matthew Gareau, North Hot-Cell, Maintenance, , , topped up the NHC window oil through the oil expansion tank IMG_20220928_121000.jpgIMG_20220928_124253.jpgIMG_20220928_124258.jpg

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.

Entry  Monday, October 03, 2022, 14:58, Matthew Gareau, North Hot-Cell, Repair, TM4, SiC#43 and C#4, Loose multipin guide pin MicrosoftTeams-image.pngMicrosoftTeams-image_(1).pngMicrosoftTeams-image_(2).png

 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)

Entry  Tuesday, October 04, 2022, 07:19, Frank Song, North Hot-Cell, Standard Operation, TM4, C#4, electrical check tm4_with_C#4_installed.png

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

Entry  Wednesday, October 19, 2022, 12:00, Carla Babcock, North Hot-Cell, Standard Operation, TM4, SiC#44, PIE on SiC#44 SiC44_PIE_20221012_150145.jpgSiC44_PIE_20221012.jpgSiC44_PIE_20221012_161755.jpg

Conducted PIE on SiC#44, which failed online. It had a cathode short, a target short and an anode short by the time we called the experiment off. In the post irradiation examination, two clear marks where the target legs touched the heat shield were found (see attachments 1 and 2). No marks were found to indicate where the cathode short would have been. The fibreglass sheath covering the anode wire where it passes over top of the coil was destroyed, must have been a result of sparking (see attachment 3). No other issues noticed, grid looked fine, though close inspection is difficult.

Entry  Tuesday, November 01, 2022, 12:40, Frank Song, North Hot-Cell, Standard Operation, TM2, UCx#39, electrical check electical_check_for_TM2_with_spent_target_UCx39_on_NHC.png

 TM2 with spent target UCx#39 had an electric check in NHC.

After UCx 39# target was removed out., I did electrical check on TM2.   @500 V B to C is 5M ohm. all Others between are above 25Mohm. HV to Chasis is 650Mohm.  A to P is still short.

Entry  Wednesday, November 02, 2022, 11:11, Frank Song, North Hot-Cell, Standard Operation, TM2, UCx#40, electrical check TM2_with_UCx40_electrical_check_on_NHC.png

an electrical check was done on NHC, TM2 with new target UCx40 is ready moving to TCS.

Entry  Thursday, November 03, 2022, 16:41, Carla Babcock, North Hot-Cell, Standard Operation, , UCx#39, Post irradiation inspection UCx#39 

Did the PIE on UCx#39-IGLIS on Thursday Nov. 2 2022, couple pictures uploaded to docushare. Did not remove the target, just the heat shield cover.

Final electrical check on the module showed a dead short from TGHT/TBHT to HV common, which we did not see online. Seems like it must have occurred after ramp down? It persisted on the target after we removed it from the module. We couldn't find any obvious contact points, because it seems it did not happen while current was running in the target. Possible locations are the bottom support leg for the TBHT and the top of the right side target leg, though it was difficult to confirm with the camera.

Otherwise the only thing to note was a blacker-than-usual spot on the inside of the Cu heat shield, downstream in the proton direction.

 

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