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  RH-ISAC, Page 111 of 138  Not logged in ELOG logo
ID Date Authordown Category Type Module Target/Number Subject
  2672   Tuesday, September 03, 2024, 11:40 David WangITWStandard OperationTM3TiC#8TM3 has been moved from ITW to S-W silo.

TM3 has been moved from ITW to S-W silo. The move is smooth.

  2674   Friday, September 06, 2024, 10:01 David WangSouth Hot-CellStandard OperationTM4Ta#67 back up. TM4 has been moved from SMP to SHC.

TM4 has been moved from SMP to SHC. The move is smooth.

  2678   Wednesday, September 11, 2024, 07:59 David WangConditioning StationStandard OperationTM4TiC#9TM4 has been moved from SHC to TCS.

TM4 has been moved from SHC to TCS. The move is smooth.

  2683   Tuesday, September 17, 2024, 11:16 David WangITWStandard OperationTM4TiC#9TM4 has been moved from TCS to ITW.

TM4 has been moved from TCS to ITW. The move is smooth.

  2686   Wednesday, September 18, 2024, 13:47 David WangSouth Hot-CellStandard OperationTM3TiC#8Tm3 has been moved from silo to SHC.

Tm3 has been moved  from silo to SHC. The move is smooth.

  2687   Monday, September 23, 2024, 11:26 David WangSouth Hot-CellStandard OperationTM3 TM3 window line has been leak checked.

TM3 window line has been leak checked after containment box removal and installation for insulator installation on water cup C.   No leak.

  2688   Monday, September 23, 2024, 11:31 David WangSouth Hot-CellDevelopmentTM3 10 pins lectrical check result after insulator is installed on water cap C.

10 pins lectrical check result after insulator is installed on water cap C.

pin 14 to 60kv bias has 20 Kohm @250V Megga check. The rest check on ohmmeter and megga @250 are either OLor over 25Mohm which are good.

  2689   Monday, September 23, 2024, 11:35 David WangITWStandard OperationTM4TiC #9.vacuum leak check on TM4 service cap in ITW.

vacuum leak check on TM4 service cap in ITW was done this morning.   leak detector leak rate 0.0XE-9 atm.cc/sec. No leak on TM4 service cap module top.

  2692   Wednesday, September 25, 2024, 07:25 David WangCoolingMaintenance  HALCW O2 level sensor maintenance.

HALCW O2 level sensor annual maintenance is done. sensor membrane has been changed and electrolyte has been refilled. gauge is calibrated. It works normal after the job.

  2693   Wednesday, September 25, 2024, 09:12 David WangSouth Hot-CellMaintenanceTM3 Tm3 has been moved from SHC to silo.

Tm3 has been moved  from SHC to silo. the move is smooth.

  2694   Friday, September 27, 2024, 07:29 David WangConditioning StationRepair  TCS water system resistivity analyzer has been repaired.

TCS water system resistivity analyzer has been repaired. Two diodes and one capacitor on PS board were broken. They were replaced. Installed analyzer back and tested it in system. it works fine. Operator closed e-fault, removed force on TS5, and enabled alarm on TS5 and TC1.

  2696   Tuesday, October 01, 2024, 10:55 David WangSouth Hot-CellStandard OperationTM2 TM2 has been moved from ITE to SHC.

TM2 has been moved from ITE to SHC. Peter did the move with Travis on help.  The move is smooth.

  2699   Tuesday, October 08, 2024, 11:45 David WangSouth Hot-CellStandard OperationTM2 Tm2 electrical check with Ta#68 installed at SHC.

ABCD was dead shorted to 60kv bias during the first time measurement after target installation. Target was removed and reinstalled again with new VCR seals by Ferran.  during target removal process, short disappeared when Aaron remove bolts on CD tube heaters terminal.  leak check and electrical check result are good after second time target installation. 

Attachment 1: TM2_Ta#68_electrical_check.pdf
TM2_Ta#68_electrical_check.pdf TM2_Ta#68_electrical_check.pdf
  2700   Tuesday, October 08, 2024, 11:46 David WangITEStandard OperationTM2Ta#68.Tm2 has been moved form SHC to ITE.

Tm2 has been moved form SHC to ITE. The move is smooth.

  2708   Thursday, October 24, 2024, 10:37 David WangConditioning StationStandard Operation  TCS water system functionnal test.

TCS water system has been started for functional test. System parameters including  pressure, all temperature sensors, flow rate sensors, resistivity are ok. I will watch on chiller CP1/2/3 in rest of the week and make sure chiller CP1/2/ 3 auto stage in/out work fine.

  2713   Wednesday, November 06, 2024, 16:33 David WangSouth Hot-CellStandard OperationTM4UCX46TM4 with UCx46 electrical and leak check at SHC

TM4 with UCx46 electrical and leak check at SHC is done. Everything is good.

Attachment 1: TM4_UCx46_electrical_check.pdf
TM4_UCx46_electrical_check.pdf TM4_UCx46_electrical_check.pdf
  2730   Wednesday, December 04, 2024, 09:00 David WangFacilitiesStandard OperationTM2 all water lines on TM2 have been purged.

all water lines on TM2 have been purged. Refilled them(except HS ) with 60psi nitrogen for module silo storage before next year using. 

  2739   Friday, January 03, 2025, 10:41 David WangITWStandard OperationTM4UCX46ITW primary and secondary vacuum vessel leak check for 2025 shut down

ITW primary and secondary vacuum vessel leak check for  2025 shut down has been done. Also,TM4 internal water line helium pressure test has been finished.  Both results are normal. There are two small old leak on EXit 1 and Exit2 module top plate  o-ring under 1Xe-8 atm.cc/sec which we knoew in past years test. resin spray on leak  area reduce the leak ratee below 5Xe-9 atm.cc/sec. No concern on these small leak.   See attachment  for detail results.

Attachment 1: ITW_primary_and_secondary_vacuum_leak_check_2025.pdf
ITW_primary_and_secondary_vacuum_leak_check_2025.pdf ITW_primary_and_secondary_vacuum_leak_check_2025.pdf
  2742   Tuesday, January 07, 2025, 12:05 David WangITEStandard OperationTM3UCx #47ITE primary and secondary vacuum vessel leak check for 2025 shut down

ITE primary and secondary vacuum vessel leak check for 2025 shut down have been done. No leak.  The TM3 waterlines helium pressure test will be done at TCS when module is there.

TM3 water lines helium pressure test  are done. 70 psi helium 3 minutes to each line( except HS which has no target on it ) . leak detector base leak rate :0.0Xe-9 atm.cc/sec. No leak on all tested water lines.Helium were purged out after test. and 60 psi nitrogen were filled in lines for storage. 

  2744   Thursday, January 09, 2025, 11:08 David WangFacilitiesMaintenance  ITH:MP1 is deteriorating by watching on ITH:CG1 and CG2 readings

ITH:MP1 is deteriorating by watching on ITH:CG1 and CG2 readings and investigation in pit. A fault 17644 has been issued. this pump will be replaced in March when general fielding in vacuum pit is reasonable for the job.

ELOG V2.9.2-2455