Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  RH-ISAC, Page 138 of 138  Not logged in ELOG logo
ID Date Author Category Type Module Target/Number Subjectdown
  2098   Thursday, June 04, 2020, 10:40 David WangConditioning StationMaintenance   Three manual valves are closed on TCS water system

Three manual valves are closed on TCS water system return line in experimental hall. See attachments. It is for TCS TK2 water level slow drop trouble shooting.  These valves will be opened again right after troubleshooting.  

TCS TK2 water level no change(11.1 inches) in this week after valves are closed. I will keep these three valves closed for one more week.

I opened these valves. In two week times, The TK2 level dropped 0.1 inches. The water level change could be a result of evaporation of water in system. We will keep watching on it.

Attachment 1: TCS_return_line_closed_valves_001.JPG
TCS_return_line_closed_valves_001.JPG
Attachment 2: TCS_return_line_closed_valves_002.JPG
TCS_return_line_closed_valves_002.JPG
  873   Wednesday, March 25, 2015, 14:34 David WangConditioning StationStandard OperationTM4Ta#45 TM4 and CS turbo- pumps are started .

I connected TM4 and CS vacuum system after TM4 move. CS roughing pump was started first this morning. Later, Anders, Bill and I started 3 turbo pumps on TM4 and CS. The pumping down is good so far. The CS vacuum system ion gauges are turned on also.

  1316   Thursday, August 11, 2016, 10:37 David WangConditioning StationRepairTM3  TM3 service tray cover plate ITA2108 has been removed.

Requested by Aurelia, and approved by Friedhelm, TM3 service tray cover plate ITA2108 has been remove out of the module. The plated is checked for active and contamination after removal. Then,It is double bagged, sealed ,  tagged, and placed downstairs in TH between south wall and green block . The ram contact reading on the plate is about 10 usv/hr.  We will do anther TM3 HV test at TCS without this cover plate.

  695   Friday, June 27, 2014, 10:16 David WangConditioning StationStandard OperationTM3  TM3 HS water lines helium pressure test. at CS

TM3 HS water line helium pressure test is done at CS. 70 psi helium , 3 minutes.Base LR 0.0xE-9 atm.cc/sec, base pressure 0.0xE-4 torr.  No response. The line is leak free.

  1185   Wednesday, March 30, 2016, 15:49 David WangAssembly/Bench TestRepairTM2  TM2 Helium spray leak check on solder stems inside service cap on the top of SW silo.

On each water circuit in side the service cap, there are 4 soldering stems which two of them are inside blue nylon insulator and other two are connected to service tray. Each stem has two soldering spots. See attachment pictures for detail location. I sprayed 15 psi helium on each soldering spots on stems  for 20second on each circuit. I sprayed tons of helium inside each blue nylon.No any leak has been found during the check. The leak detector base leak rate:0.0 XE-9 atm.cc/sec, base pressure:0.0X E-4 torr. The circuit which I checked are :TA+, Ta-, Tube+, Tube-, PQ (coil 2), RU( coil1), EE, MSP, GE. The HS and window circuit are opened at this moment so they can not be checked.

Attachment 1: leak_check_TM2_016.JPG
leak_check_TM2_016.JPG
Attachment 2: leak_check_TM2_017.JPG
leak_check_TM2_017.JPG
Attachment 3: leak_check_TM2_018.JPG
leak_check_TM2_018.JPG
Attachment 4: leak_check_TM2_021.JPG
leak_check_TM2_021.JPG
Attachment 5: leak_check_TM2_022.JPG
leak_check_TM2_022.JPG
Attachment 6: leak_check_TM2_023.JPG
leak_check_TM2_023.JPG
Attachment 7: leak_check_TM2_025.JPG
leak_check_TM2_025.JPG
  735   Wednesday, September 03, 2014, 10:50 David WangITWStandard OperationTM1  TM1 has been disconnected in ITW.

  TM1 has been disconnected in ITW.

  678   Tuesday, June 10, 2014, 07:57 David WangConditioning StationStandard OperationTM1UC#9 TM1 are vented with argon and disconnected at CS.

TM1 will be moved to ITW this morning.

  574   Thursday, December 05, 2013, 14:57 David WangITEStandard OperationTM4  Connected TM4 in ITW

I connected TM4 in ITE. All turbo pumps have been started and wok fine including new TP3. Everything is good so far.

  1322   Tuesday, August 16, 2016, 12:35 David WangConditioning StationRepairTM3  CS vacuum pumps have been stopped

The TCS is venting now. The TM3 blue insulator replacement job will be started soon.

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