Friday, January 04, 2019, 08:48, David Wang, ITW, Standard Operation, TM2, , TM2 has been disconnected in ITW.
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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. |
Tuesday, January 08, 2019, 08:49, David Wang, ITW, Standard Operation, TM2, , TP1 TP1 have been disconnected in ITW
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Started argon venting of ITW now. |
Wednesday, January 09, 2019, 06:26, David Wang, Conditioning Station, Standard Operation, , , TCS vacuum pumps have been stopped.
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The tCS will be vented soon for TM2 move later this week. |
Wednesday, January 09, 2019, 13:29, David Wang, ITW, Repair, , , ITH:MP1
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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. |
Thursday, January 10, 2019, 10:45, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 is under vacum at TCS.
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TCS: TP1, TP2 and TP1S are started. |
Friday, January 11, 2019, 13:17, David Wang, Conditioning Station, Standard Operation, TM2, , TCS and TM2 vacuum system are switched off for this Sunday power outage.
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I will restart all pumps Monday morning. |
Monday, January 14, 2019, 07:07, David Wang, Conditioning Station, Maintenance, TM2, , Restarted TCS vacuum system .
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No issue. |
Tuesday, January 22, 2019, 09:56, David Wang, ITW, Maintenance, TM2, , ITW water system maintenance.
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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. |
Thursday, January 24, 2019, 10:34, David Wang, ITW, Maintenance, , , Changed 24VDC plugs of TP solenoid valves in ITW
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3 damaged 24VDC plugs of TP solenoid valves are replaced. Inspected other plugs. All of them are in good condition now. |
Monday, January 28, 2019, 10:41, David Wang, Conditioning Station, Repair, TM2, , TM2 water lines helium pressure test at TCS
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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 |
Thursday, February 14, 2019, 07:13, David Wang, Conditioning Station, Standard Operation, TM2, , TCS vacuum pumps have been stopped.
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Preparation on TM2 move from TCS to SHC. |
Friday, February 15, 2019, 12:05, David Wang, ITE, Maintenance, TM4, , ITE annual vacuum leak check.
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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. |
Friday, February 15, 2019, 12:09, David Wang, ITE, Maintenance, TM4, , ITE water system maintenance.
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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. |
Tuesday, March 05, 2019, 07:20, David Wang, Conditioning Station, Repair, TM2, , TM2 HV test at TCS
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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. |
Thursday, March 07, 2019, 09:12, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 move from TCS to SHC.
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TM2 has been moved from TCS to SHC. The move is smooth. |
Monday, March 18, 2019, 07:23, David Wang, Conditioning Station, Repair, TM2, , TM2 window line helium test
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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. |
Monday, March 18, 2019, 07:25, David Wang, Conditioning Station, Maintenance, TM3, , TCS vacuum pumps have been stopped.
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The TCS will be vented soon for TM2 move. |
Thursday, March 28, 2019, 10:27, David Wang, Conditioning Station, Repair, TM2, dummy febiad test target, TM2 new source tray helium pressure test at TCS.
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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. |
Monday, May 13, 2019, 11:22, David Wang, ITW, Repair, , , ITW entrance module has been connnected.
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Entrance module has been connected back to ITW. Everything is normal. |
Wednesday, May 22, 2019, 11:50, David Wang, ITE, Standard Operation, TM4, , TM2 has been connected in ITE.
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TM2 has been connected in ITE. high active water system and vacuum pumps are started. The pumping down on TM2 and ITE is good so far.
See attachment for connection checklist. |
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