 Friday, February 10, 2017, 09:56, David Wang, Conditioning Station, Standard Operation, , , water has been refilled to TCS:TK2
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| TCS:TK2 , Water has been refilled to 28.5" level. It was 15.1". Fall protection equipment are used during the job. |
Monday, March 06, 2017, 08:01, David Wang, Cooling, Repair, , , HALCW resin tank replacement. 11x
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HALCW resin tank has been replaced. The old tank is stored in middle-west silo now. The field on old resin tank bottom is about 3.5 msv/ hr(on contact).
By shielding it into silo and putting two lead blankets on the top cover of the silo,The general field 1 feet above this silo is 25usv/hr. And, The field
around the silo area are less affected. This old tank will stay there as long as possible. For the new resin tank during preparation, It was found |
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Tuesday, March 07, 2017, 09:25, David Wang, ITW, Repair, , , ITW HALCW 2" return line ball valve seals replacement.
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Leaking seals on ITW HALCW 2" return line ball valve have been replaced. 8 liter waters are drained out for this job. Water are drained into a thick
plastic bag. The bag is tie strapped , labeled, and put into a yellow garbage bin in MAA. Water sample is given to RPG. After analyzing, RPG will
give instruction on how to deal with it. Since we just refilled NALCW to system before this job, the active level on sample is very low. We may dump them |
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Tuesday, March 07, 2017, 14:41, David Wang, ITE, Maintenance, , , ITE dump plug water circuit is closed for ITE IG1S small surge.
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It is closed @ 2:35PM by closing supply side valve first , the return side valve of ITE dump plug .
Opened ITE dump plug circuit valves @4:28PM. ITE IG1S still at 1XE-6. No change before and after of circuit closing and reopeneing. |
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Wednesday, March 08, 2017, 14:09, David Wang, ITE, Maintenance, TM2, , ITE IG1S increasing.
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By retrieving data further, It has been found no directly relationship between IG1S surging and dump plug water opening. Vacuum surging is 10minutes
ahead dump water supply to circuit. SEE attachment 1. Also, The ITE IG1S start to behavior unusual in middle of Feburary. See attachment 2. Today,
ITE IG1S is still slowly climbing up. I decide to leak check ITE vacuum vessel. Before leak check, for more information and trouble shooting. I closed |
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Thursday, March 16, 2017, 10:32, David Wang, Spent Target Vault, Repair, TM4, , TM4 and its silo rust photos 13x
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| I watched rust on TM4 and its silo. Most of rust are on est side of module and silo. See attachments |
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Tuesday, March 21, 2017, 11:59, David Wang, Conditioning Station, Repair, TM4, , Rust inpsection on TM4 service cap inside surface and shielding plug surface. 11x
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Yasmine and I did a rust inpsection on TM4 service cap inide surface and shielding plug surface. No rust has been found. Also, all steel bolts on this
surface look fine. The inside of silo held this module are rust free as well. See attachments |
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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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