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ID Date Author Category Type Module Target/Number Subjectdown Text Attachments
  2051   Friday, January 24, 2020, 08:19 David WangITWStandard OperationTM4 ITW water signal interlock check.ITW water signal interlock check is done.
Everything works fine. ITW 2A2 tank water
signal is broken and is not ok on XT2A2 
  
  2450   Tuesday, May 30, 2023, 14:15 David WangITWStandard Operation  ITW water signal interlock check is done.ITW water signal interlock check is done.
All ITW water signals including HS, EE, Coil
, Ta, Tu, MSP, C-window, HVC1, HVC2, 2A-dump,
  
  2095   Friday, May 22, 2020, 13:26 David WangITWRepair  ITW water leak.A water leak was found on a fitting connecting
ITW dump return line pressure gauge on top
of exit module. TM tank flange, o-ring slot
 itw_water_leak_001.JPGitw_water_leak_005.JPGitw_water_leak_009.JPGitw_water_leak_013.JPG 
  1983   Tuesday, September 10, 2019, 14:04 David WangITWStandard Operation  ITW water interlock check.ITW water interlock check is finished.
Everything is good. 
  
  2194   Thursday, March 04, 2021, 11:20 David WangITWMaintenance  ITW water flow wheels and coils replacement.ITW water flow wheels and coils are replaced.
Wheels and coils on Oven, Tube, HS, EE, MSP,
Febiad coil, containment box window, dump,dump
  
  2284   Thursday, January 06, 2022, 10:37 David WangITWStandard OperationTM2 ITW vacuum vessel and TM2 internal cooling lines leak check in pit. Frank  and I finished ITW and TM2 leak
check. TM2 internal water-cooling lines 
are leak free. They passed 70 psi helium
  
  2178   Monday, January 18, 2021, 12:29 David WangITWStandard OperationTM2Nb#9ITW vacuum and TM2 water lines leak check .ITW primary and secondary vacuum vessel
leak check are done. There is a 5XE-8 atm.cc/sec
leak on Exit service cap NW side square panel. 
  
  1058   Tuesday, September 01, 2015, 10:38 David WangITWMaintenanceTM2 ITW top tank flange clean up and r-ring replacement.During last run, ITW dump circuit
had a water leak on an adaptor below the
pressure gauge. The top tank flange, slot,
 ITW_o-ring_replacement_2015-09-01_008.JPGITW_o-ring_replacement_2015-09-01_007.JPGITW_o-ring_replacement_2015-09-01_006.JPG 
  902   Tuesday, April 28, 2015, 10:26 David WangITWStandard OperationTM1UCx12ITW target pit o-ring seal replacement.Dan and I replaced ITW target pit o-ring
seal(.275DIA X42"ID). It is an annual
job before first beam to ITW. The old o-ring
  
  1419   Thursday, January 12, 2017, 14:24 David WangITWStandard OperationTM2 ITW primary and secondary vacuum vessel winter shut down leak check.TM2 is located in ITW for this leak check.
Leak detector is installed between ITW BV2s
as before. LD base leak rate 0.0XE-9atm.cc/sec,
  
  2739   Friday, January 03, 2025, 10:41 David WangITWStandard OperationTM4UCX46ITW primary and secondary vacuum vessel leak check for 2025 shut downITW primary and secondary vacuum vessel
leak check for  2025 shut down has been
done. Also,TM4 internal water line helium
 ITW_primary_and_secondary_vacuum_leak_check_2025.pdf 
  2515   Wednesday, January 03, 2024, 14:03 David WangITWStandard OperationTM2Ta#66ITW primary and secondary vacuum vessel leak check and TM2 water lines helium pressure test. ITW primary and secondary vacuum vessel
leak check and TM2 water lines helium pressure
test are done today. No major concern. see
 ITW_2024_shut_down_leak_check.pdf 
  2055   Thursday, January 30, 2020, 12:06 David WangITWStandard OperationTM4 ITW primary and secondary vacuum seals leak check. Connected LD to ITW(TM4) TP1. Base LR 0.0Xe-9
atm.cc/sec. Base pressure 0.0Xe-4 torr. All
ITW primary and secondary air to vacuum seals
  
  2406   Tuesday, January 24, 2023, 07:21 David WangITWMaintenance  ITW pit general clean up.  ITW  was cleaned with vacuum
canister in Jan 10th. HV  cage inside
and blue  nylon insulators were wiped. 
  
  1007   Tuesday, July 21, 2015, 12:38 David WangITWRepair  ITW external water leak on dump circuit has been fixed.The leaking 1/8 NPT(M)-1/4NPT(F) adapter
on the ITW dump circuit is replaced.
  
  953   Friday, June 19, 2015, 11:43 David WangITWRepairTM1 ITW external water leak on dump circuitThere was an external water leak in ITW
during the last beam running time. The leak
started after the shielding blocks transfer(May
 6x 
  1811   Monday, October 29, 2018, 10:43 David WangConditioning StationRepair  ITW exit 2 leak check at TCS.I did a leak check this morning on exit
2 module at TCS. LD base  leak rate
is 4.00XE-9atm.cc/sec, Base pressure is 0.00
  
  2539   Tuesday, February 06, 2024, 13:36 David WangITWMaintenance  ITW exit 1 module tank flange o ring has been replaced. ITW exit 1 module tank flange o ring has
been replaced. the old o r-ing was completely
flat in slot without elastic property. 
  
  2538   Tuesday, February 06, 2024, 13:28 David WangITWMaintenance  ITW exit 1 module has been disconnected and reconnected for o ring replacementITW exit 1 module was disconnected 
for Exit module flange o -ring replacement
yesterday. After oring replacement, the module
  
  2525   Monday, January 22, 2024, 09:50 David WangITWStandard Operation  ITW entrance module has been moved from SHC to ITW.ITW entrance module has been moved from
SHC to ITW. A slightly bump on module shielding
block bottom side corner to tank vessel side
  
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