 Thursday, March 23, 2017, 11:42, David Wang, Conditioning Station, Maintenance, TM4, , TM4 Sevice cap rust are cleaned out. 
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| TM4 service cap rust are cleaned out at TCS. All top surface of TM4 are wiped and cleaned . The module looks good now. see attachments |
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Monday, March 27, 2017, 06:33, David Wang, ITE, Standard Operation, , , ITE clean up
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| ITE clean up is done. HV cage inside is wiped. |
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Monday, March 27, 2017, 12:55, David Wang, Spent Target Vault, Repair, , , S/W silo rust clean up
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| Rust on S/W silo and cover plate stored at silo area are cleaned up. |
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Wednesday, March 29, 2017, 14:11, David Wang, Conditioning Station, Standard Operation, TM4, , small leak on TM4 Ta(-) water line.
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A small leak has been found on TM4 Ta(-) which is marked as "B" on terminal blocks. The LD base Leak rate is 1.2XE-8 atm.cc/sec. 70psi helium
has been applied to Ta(-) water line for 3minutes. The leak rate went up to 2.5xE-6 atm.cc/sec and stabilized there. Anders found a helium response on
RGA helium reading during the same time. This confirms the leak is real. Other lines are leak checked today also. They are good still. All TM4 water lines |
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Thursday, March 30, 2017, 11:21, David Wang, Conditioning Station, Repair, TM4, , Leak check on TM4 Ta(-) water lines in service cap
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Leak check on TM4 Ta(-) water lines in service cap is done. LD base LR after 50minutes pumping down:0.0xE-9 atm.cc/sec. base pressure: 0.0XE-4 torr.
I sprayed lots helium on welding stems on Ta(-) line in service cap including stems in blue nylon insulator and stems to service tray. no any response
has been foun on LD. The Ta(-) line in service cap is leak free. |
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Tuesday, April 04, 2017, 10:23, David Wang, Conditioning Station, Standard Operation, TM4, , Helium pressure leak check on TM4 Ta(-) water lines
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This morning, The helium pressure leak check on TM4 Ta(-) is done after TM4 finished conditioning yesterday. LD base LR:8.0XE-9 atm.cc/sec, base
pressure: 0.0XE-4 torr. Applied 70 psi helium to TM4 TA(-) water line. The LR slowly climbed to 2.2XE-7 atm.cc/sec, and stopped there. Waited for 5 minutes
and change at 2.2 X E-7 atm.cc/sec. |
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Tuesday, April 04, 2017, 10:24, David Wang, Conditioning Station, Standard Operation, TM4, , Stopped TCS pumps this morning
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| Argon vented TCS and TM4 after pumps are stopped. |
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Tuesday, April 04, 2017, 14:39, David Wang, Crane, Standard Operation, , , Crane check main hoist on jogging with shielding plug lifted.
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Today, I checked TH crane main hoist when shielding plug is installed into ITE pit. I did some jogging actions on main hoist during the operation.
Everything looks fine. No burning smell, no strange noise. An outside crane expert suggest that jogging is the worst working situation for crane. We have
to use jogging actions during our crane operation. But, we could try to use less jogging when operate the crane. |
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Tuesday, April 04, 2017, 14:40, David Wang, ITE, Standard Operation, TM4, , TM4 has been connected in ITE
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| all turbo-pumps are started. Everything looks fine so far. |
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Wednesday, April 05, 2017, 11:57, David Wang, ITE, Maintenance, , , ITE target module flange o-ring repalcement
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| ITE target module tank flange o-ring was replaced yesterday before TM4 moving. ITE: IG1S reading looks fine so far. |
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Wednesday, April 05, 2017, 14:13, David Wang, Conditioning Station, Maintenance, TM1, , TM1 and TCS vacuum system are connected together
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| I started two turbo-pumps on TM1 and one small TP on TCS. They are work fine. |
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Thursday, April 06, 2017, 12:33, David Wang, Conditioning Station, Repair, TM1, , TM1 rust inpsection and removal
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TM1 inside service cap surface and shielding plug surface are visually inspected yesterday. No rust has been found. I cleaned all rust on top of TM1
today. Rust on TM1 silo top plate are cleaned as well. |
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Tuesday, April 11, 2017, 14:06, David Wang, Conditioning Station, Standard Operation, TM4, , SHC, TM2 leak check on HS line.
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| Chad and I did leak check on TM1 HS line at SHC. 0.0XE-9 atm.cc/sec. No leak. |
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Wednesday, April 12, 2017, 07:26, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 and TCS vacuum system has been connected.
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| Roughing down overnight. Turbo pumps are started this morning. Everything looks good so far. |
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Wednesday, April 12, 2017, 12:51, David Wang, South Hot-Cell, Repair, TM3, , TM3 Ram readings @ SHC
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We have a ram installed on SHC pole which is 0.5 meter to module shielding block surface. the readings we got today during TM3 move:
at containment box center (highest reading): 3.14 msv/hr.
at bottom of shielding blocks: 960 usv/hr. |
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Thursday, April 13, 2017, 11:33, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 water llines at TCS.
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LD BLR :0.0 X E-9 atm.cc/sec. BP:0.0XE-4 torr. helium 70 psi. 3 minutes on each circuit
HS
1.8XE-7 ATM.CC/SEC
TA+
1.4 XE-7
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Thursday, April 13, 2017, 14:16, David Wang, Crane, Repair, , , TH crane: east side main hoist brake assembly is replaced.
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Gordon Crane technician Tom Kauss finished the replacement of the east side main hoist brake assembly. A new set up is installed. he adjusted gap too
close during first time try. So, the smell appeared when operate the brake. He increased the gap to a proper distance then. It looks like everything works
fine now. Still, The brake need to be tested with 10K lBS load on it. We will do the load test on next Thursday when he come here to replace west side |
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Wednesday, April 19, 2017, 08:29, David Wang, Conditioning Station, Standard Operation, , , TH schedule 132 update in first beam week
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| Update schedule to show job process in TH. See attachment 1,2. |
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Friday, April 21, 2017, 08:19, David Wang, Conditioning Station, Repair, , , Low frequency on TCS TGHT flow sensor.
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Anders and I found a low frequency issue(13hz only) on TCS TGHT flow sensor when doing TM4 conditioning. By trouble shooting, We found the module water
lines are good. the restriction cause this problem in on TCS supply or return water lines to TGHT. I switched TGHT lines with MSP water lines. The
wheel frequency on TGHT is 67.0hz which is pretty high. Now, MSP is using the original TGHT water line(flow sensor frequency 13hz). Flow sensors and |
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Monday, April 24, 2017, 09:52, David Wang, Conditioning Station, Standard Operation, TM2, , Switch off TCS water system and vacuums
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| The TCS bias was turn off before that. The TM2 and TCS are still under vacuum now. |
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