 Thursday, November 01, 2018, 11:42, David Wang, Conditioning Station, Standard Operation, TM2, UCx 25., TM2 HS line helium pressure test at TCS and helium spray at SHC..
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Chad and I did leak check on TM2 HS line at SHC yesterday. Base LR 0.0XE-9 atm.cc/sec. No response on LD. during helium spray.
Today , I did helium pressure test at TCS. base LR 0.0xe-9atm.cc/sec. applied 70psi helium for 3 minute. leak rate slowly climbed to2.2 Xe-7 atm.cc/sec
ate stopped there. The result is close to before. |
Wednesday, November 28, 2018, 06:39, David Wang, Conditioning Station, Standard Operation, , , Disconnection checklist LpTa #56 
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| TM4 was disconnected in ITE. Checklist list in attachment. |
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Wednesday, November 28, 2018, 07:04, David Wang, ITE, Development, TM4, LpTa 56, New high current flexible cables inspection after LpTa#56 beam run.
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| Inspected new high current flexible cables during TM4 disconnection. The new cables and adapters work fine. |
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Thursday, November 29, 2018, 06:38, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check TM4 UCx 26 at SHC.
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Chad and I did a leak check on TM4 HS line with UCx 26# installed . Base LR 0.0X E-9 atm.cc/sec. Base pressure 0.0XE-4 torr. No response on leak
detector during leak check. |
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Tuesday, December 04, 2018, 12:36, David Wang, ITE, Standard Operation, TM4, UCx 26., TM4 has been connected in ITE/ Checklist.
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| TM4 has been connected in ITE. See attachment for connection checklist |
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Thursday, January 03, 2019, 13:30, David Wang, ITW, Repair, , , ITH:MP1
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ITH:MP1 inlet pressure showed 10torr after power outage during holiday. All ITE/W turbo-pumps were tripped because of it. Removed one shielding block
above the vacuum station. Visually checked oil level and condition in pump. oil level is high. oil color is dark. no oil leak . Installed
a local convectron gauge on pump inlet. After pumping down, It shows pump is good. Tightened all KF 25 and 50 clamps on pump inlet side. Reconnected |
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Thursday, January 03, 2019, 13:41, David Wang, Crane, Repair, , , Target hall crane PLC issue.
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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 |
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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. |
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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. |
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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. |
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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. |
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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. |
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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. |
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Monday, January 14, 2019, 07:07, David Wang, Conditioning Station, Maintenance, TM2, , Restarted TCS vacuum system .
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| No issue. |
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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. |
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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. |
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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 |
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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. |
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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. |
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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.
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