ID |
Date |
Author |
Category |
Type |
Module |
Target/Number |
Subject |
2098
|
Thursday, June 04, 2020, 10:40 |
David Wang | Conditioning Station | Maintenance | | | 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
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Attachment 2: TCS_return_line_closed_valves_002.JPG
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873
|
Wednesday, March 25, 2015, 14:34 |
David Wang | Conditioning Station | Standard Operation | TM4 | Ta#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 Wang | Conditioning Station | Repair | TM3 | | 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 Wang | Conditioning Station | Standard Operation | TM3 | | 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 Wang | Assembly/Bench Test | Repair | TM2 | | 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
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Attachment 2: leak_check_TM2_017.JPG
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Attachment 3: leak_check_TM2_018.JPG
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Attachment 4: leak_check_TM2_021.JPG
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Attachment 5: leak_check_TM2_022.JPG
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Attachment 6: leak_check_TM2_023.JPG
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Attachment 7: leak_check_TM2_025.JPG
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735
|
Wednesday, September 03, 2014, 10:50 |
David Wang | ITW | Standard Operation | TM1 | | TM1 has been disconnected in ITW. |
TM1 has been disconnected in ITW. |
678
|
Tuesday, June 10, 2014, 07:57 |
David Wang | Conditioning Station | Standard Operation | TM1 | UC#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 Wang | ITE | Standard Operation | TM4 | | 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 Wang | Conditioning Station | Repair | TM3 | | CS vacuum pumps have been stopped |
The TCS is venting now. The TM3 blue insulator replacement job will be started soon. |