 Thursday, August 11, 2022, 09:10, David Wang, Conditioning Station, Standard Operation, TM4, SiC #44, HS line helium pressure test. Gas line fitting on module top and gas line leak check.
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HS line helium pressure test is done at TCS. No leak. I also leak checked gasline adapter and fittings on TM4 top. No leak. 1/4 copper gas line
between module and ITE was leak checked yesterday. It is good. |
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Thursday, September 08, 2022, 09:06, David Wang, Conditioning Station, Standard Operation, TM2, UCx#39, HS line helium pressure test.
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| TM2 with UCX#39 HS line helium pressure test is done at TCS. 70 psi helium 3minutes. No leak @0.0XE-9 atm.cc/sec. |
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Wednesday, October 05, 2022, 09:31, David Wang, Conditioning Station, Standard Operation, TM4, C#4, HS line helium pressure test. TM4 with C#4 at TCS.
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| TM4 HS line helium pressure test is done. 70psi helium pressure@ 3XE-8 atm.cc/sec . No leak. |
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Monday, October 17, 2022, 08:07, David Wang, ITE/ITW, Repair, TM4, , A small leak on target station secondaryvacuum back up line by ITH MP1S.
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A small leak in target station secondary vacuum back
up line is observed. It affects ITH CG2S,CG1S and CG4SA. Current draw on TP1s and TP4S is getting higher(above 1A) because of it. An internal leak in
ITH MP1S is suspected by first round investigation. Close watching on system and further investigation are needed.
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Thursday, November 03, 2022, 13:15, David Wang, Conditioning Station, Standard Operation, TM2, UCx#40, HS line helium pressure test. TM4 with UCx#40at TCS.
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| Helium 70 psi. tested 5minutes at base leak rate 0.9 xE09 atm.cc/sec on HS line. No leak. |
Friday, January 06, 2023, 10:38, David Wang, ITW, Standard Operation, TM2, , ITW/TM2 vacuum vessels leak check and TM2 internal cooling lines helium pressure test. 
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ITW
and TM2 primary and secondary vacuum vessel leak check is done. Leak detector is connected to ITW TP1. Base leak rate on leak detector is 0.0 x E-9
atm.cc/sec. See attachment for the result. No big issue. Two old leaks we found last year at location D and E disappeared in this check. |
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Tuesday, January 24, 2023, 07:17, David Wang, ITE, Standard Operation, TM4, UCx#41, TM4 water lines helium pressure test 2023.
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TM4 water lines helium pressure test was done yesterday at ITE. All water lines were air purged one day ahead for the test. No leak has been
found on TM4 waterlines during the test. See attachment for detail |
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Tuesday, January 24, 2023, 07:21, David Wang, ITW, Maintenance, , , ITW pit general clean up.
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ITW was cleaned with vacuum canister in Jan 10th. HV cage inside and blue nylon insulators were wiped. Garbage inside the pits
were cleaned out. |
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Tuesday, January 24, 2023, 07:26, David Wang, Conditioning Station, Standard Operation, , , TH floor moping and garbage collelctions.
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Plant group and us finished TH floor mopping and garbage collections last Wednesday. Th moping head had 800 count after using. all garbage were
bagged , checked, tagged, and sent to radwaste area. |
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Tuesday, January 24, 2023, 08:46, David Wang, ITE, Standard Operation, TM4, UCx#41, TM4 has been disconnected in ITE.
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| TM 4 has been disconnected in ITE. See attachment for disconnection checklist. |
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Tuesday, January 24, 2023, 14:22, David Wang, South Hot-Cell, Standard Operation, TM4, UCx#41, TM4 electrical check with and without target at SHC
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| TM4 electrical check with UCX41target and without target at SHC. The results are good. See attachment. |
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Wednesday, January 25, 2023, 06:52, David Wang, ITE, Standard Operation, TM4, UCx#41, ITE primary and secondary vacuum vessel air to vacuum seals leak check.
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ITE primary and secondary vacuum vessel air to vacuum seals leak check was done this week. One leak has been found on IG1S feed through to entrance module
surface seal. It explains what we saw on ITE IG1S readings change(from low E-7 torr to 1Xe-6 torr) on December 22, 2022. This leak seal will be replaced
soon. |
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Friday, January 27, 2023, 07:11, David Wang, Crane, Standard Operation, , , Target hall Crane annual inspection has beend done.
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Tom Kauss inspected target hall crane yesterday. The crane works fine. Tom has this inspection record in his file. The inspection tag has been issued.
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Friday, January 27, 2023, 07:15, David Wang, Crane, Standard Operation, , , Target hall Crane annual inspection has beend done.
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Tom Kauss finished TH crane annual inspection yesterday. The crane woks fine. Tom has this inspection record in his file. The crane inspection
tag has been issued for 2023. |
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Friday, January 27, 2023, 07:18, David Wang, Crane, Standard Operation, , , Inspection of target module lifing frame ITA0494-1997-01 and ITA0494-1997-02
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Tom Gauss inspected two target module lifting frames ITA0494-1997-01 and ITA0494-1997-02 yesterday. He certified the use of these two frames for
2023. Inspection tags have been issued and attached to frames. He has inspection record on them. |
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Friday, January 27, 2023, 07:25, David Wang, Crane, Standard Operation, , , Inspection of TH crane below hook attachment pins and plates ITA6550-01
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Tom Kauss inspected target hall crane below hook attachment pins and plates ITA6550-01 yesterday. He certified the use of these pins and plates. The
inspection of these pins and plates was in Target hall crane annual check list. It was issued as a calibration index by Isaac Earle in 2022-Feb-08.
After inspection, The inspection tag was issued and attached to pin. Tom has an inspection record on this job |
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Monday, February 13, 2023, 09:57, David Wang, ITW, Maintenance, , , ITW/ITE primary vacuum back up lines and BVs leak check in target pit.
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In past two weeks, ITW/ ITE primary vacuum back up lines and BVs in ITW/ITE pit have been leak checked. ITW BV1 and BV2 on back up line side were
leak. They are replaced with old leak free BVs. ITE TP2 NW25 SST flexible line right after pump were leak . It is replaced with new NW25 SST
flexible line. Two leak were found on ITW side KF 50 O-rings connected to NW 50 SST flexible coupling. They were replaced with new KF50 o-rings. After |
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Tuesday, February 14, 2023, 11:36, David Wang, Assembly/Bench Test, Repair, , , Turbo pump BVs o-ring replacement.
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Five of used internal leaked TP BVs are serviced and repaired. Internal plunge o-ring and case o-ring are replaced on all five BVs.
Leak checked valves after . They are ok to be used as spare parts. The are active parts stored in TH now. |
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Wednesday, March 01, 2023, 09:27, David Wang, Cooling, Maintenance, , , Two filters on HALCW resin circuit have been replaced.
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Two filters on HALCW resin circuit have been replaced. O-ring 235# were changed on both filter cartridge houses. 25micron 10"x 2.5"
3M cartridge new filters are used. Old filters are not very dirty. They are bagged and stored in vacuum pit. Residual water from cartridge houses
are collected and stored in high active storage jug with sealed cap. No leak on resin circuit before and after the job. |
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Wednesday, March 01, 2023, 09:34, David Wang, Cooling, Maintenance, , , Visual inspection of HALCW for possible small water leak or drip.
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I visually inspected HALCW system including water station section, both target pits, and de-ionizer system. No small leak and drip was found .
The inspection in both target pits will be repeated after flow sensors are replaced. |
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