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 96 of 140  Not logged in ELOG logo
ID Date Authordown Category Type Module Target/Number Subject
  1845   Thursday, January 03, 2019, 13:41 David WangCraneRepair  Target hall crane PLC issue.

Target hall crane did not work properly after power outage during Christmas time. The only movement could be operated is crane rotation. Power is supplied crane. The control board on N-S, E-W and up-down movement showed  F51 error code which is tripped limit.. All these clues pointed to a PLC control problem.  Don dale was asked for help. He used the crane control PLC program on an old computer  in RH control room reset the PLC system. Everything works fine after his reset.

  1846   Friday, January 04, 2019, 08:48 David WangITWStandard OperationTM2 TM2 has been disconnected in ITW.

TP1, TP2 are still connected for next week leak check. All water lines in TM2 are purged with 80 psi air, each for 5 minutes.

TP1 and TP2 had been disconnected. TM2 with UCx 25  disconnection checklist, See attachment.

Attachment 1: UCx25_TM2_disconnection_checklist.pdf
UCx25_TM2_disconnection_checklist.pdf UCx25_TM2_disconnection_checklist.pdf
  1848   Tuesday, January 08, 2019, 08:49 David WangITWStandard OperationTM2 TP1 TP1 have been disconnected in ITW

Started argon venting of ITW now.

  1849   Wednesday, January 09, 2019, 06:26 David WangConditioning StationStandard Operation  TCS vacuum pumps have been stopped.

The tCS will be vented soon for TM2 move later this week.

  1852   Wednesday, January 09, 2019, 13:29 David WangITWRepair  ITH:MP1

ITH: MP1 has been replaced due to its poor performance.  Its motor and power cable are taken out and reused on new pump. Vacuum group assembled them together, and installed the new pump. The new pump works fine.

  1854   Thursday, January 10, 2019, 10:45 David WangConditioning StationStandard OperationTM2 TM2 is under vacum at TCS.

TCS: TP1, TP2 and TP1S are started.

  1856   Friday, January 11, 2019, 13:17 David WangConditioning StationStandard OperationTM2 TCS and TM2 vacuum system are switched off for this Sunday power outage.

I will restart all pumps Monday morning.  

  1858   Monday, January 14, 2019, 07:07 David WangConditioning StationMaintenanceTM2 Restarted TCS vacuum system .

No issue.

  1861   Tuesday, January 22, 2019, 09:56 David WangITWMaintenanceTM2 ITW water system maintenance.

ITW water system maintenance is done. All working paddle wheels and coils are replaced. ITW water system polyurethane tubes are replaced as well. Two 3/8" leak small valves on return lines are replaced. 85 liters of tritium water are transferred from storage tank to B2 level holding tank. LALC water are refilled into S-tank. Restarted pump and checked system. Everything works fine now. No water leak has been found so far.  

  1862   Thursday, January 24, 2019, 10:34 David WangITWMaintenance  Changed 24VDC plugs of TP solenoid valves in ITW

3 damaged 24VDC plugs of TP solenoid valves are replaced. Inspected other plugs. All of them are in good condition now.

  1863   Monday, January 28, 2019, 10:41 David WangConditioning StationRepairTM2 TM2 water lines helium pressure test at TCS

leak detector base LR: 0.0Xe-9atm.cc/sec. helium 70 psi. test time : 3 minutes for each circuit.The results in atm.cc/sec are Ta+(A):1.8  XE-8. TA-(B):0.0xE-9. Tu-(C):1.2XE-7. TU+(D):1.6XE-7. Coil 2 (PQ):0.0XE-9. Coil 1 (RU):0.0XE-9. MSP:2.2XE-7. EE:1.0XE-7. HS:N/A. Window:5.8XE-9

  1866   Thursday, February 14, 2019, 07:13 David WangConditioning StationStandard OperationTM2 TCS vacuum pumps have been stopped.

Preparation on TM2 move from TCS to SHC.

  1868   Friday, February 15, 2019, 12:05 David WangITEMaintenanceTM4 ITE annual vacuum leak check.

Helium pressure test on all water lines: 70psi , 3 minutes. HS has a quick response to 9Xe-9atm.cc/sec for 20 seconds. No response on other lines. All water lines are good. Air to vacuum  leack check on ITE and TM4: TM4 IG1 / Steers side panel has a low E-6 atm.cc/sec leak. The o-ring need to be changed when TM4 is located at TCS. All other air to vacuum seals are good on both primary and secondary vacuum vessel.

  1869   Friday, February 15, 2019, 12:09 David WangITEMaintenanceTM4 ITE water system maintenance.

The ITE water system maintenance job is done. Changed all paddle wheels and coils on ITE flow sensors. All using water poly-tubes in ITE are replaced .  Started high active water pump, and checked ITE water signals. They are good. No leak has been found on  replaced tubes and related fittings.

  1881   Tuesday, March 05, 2019, 07:20 David WangConditioning StationRepairTM2 TM2 HV test at TCS

Spark between HV cover vertical mesh plate and HS 60KV  bias connecting clamp 90degree angle at 55 KV on TM2 top. HV cover is removed to test above  55KV. The spark triggered TH and SHC ventilation secondary alarm.

  1884   Thursday, March 07, 2019, 09:12 David WangConditioning StationStandard OperationTM2 TM2 move from TCS to SHC.

TM2 has been moved from TCS to SHC. The move is smooth.

  1893   Monday, March 18, 2019, 07:23 David WangConditioning StationRepairTM2 TM2 window line helium test

New seals with a blank off cap are installed on TM2 window line water block.   The seals are checked at TCS with 70 psi helium for 5 minutes with LD at 0.0xE-9atm/cc.sec. No response on LD during test. Seals are good.

  1894   Monday, March 18, 2019, 07:25 David WangConditioning StationMaintenanceTM3 TCS vacuum pumps have been stopped.

 The TCS will be vented soon for TM2 move.

  1901   Thursday, March 28, 2019, 10:27 David WangConditioning StationRepairTM2dummy febiad test targetTM2 new source tray helium pressure test at TCS.

Helium pressure test on TM2 all water circuits is done. 70 psi helium , 10 minutes test time. Leak detector :base leak rate 0.0XE-9 atm.cc/sec, base pressure 0.0Xe-4torr. No any response on LD during the test. All TM2 water circuit are leak free.

  1920   Monday, May 13, 2019, 11:22 David WangITWRepair  ITW entrance module has been connnected.

Entrance module has been connected back to ITW. Everything is normal.

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