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ID |
Date |
Author |
Category |
Type |
Module |
Target/Number |
Subject |
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2262
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Tuesday, November 09, 2021, 09:58 |
Frank Song | ITW | Standard Operation | TM2 | C#3 | module disconnection |
the module TM2 with target C#3 was disconnected at ITW and is being remoted moving to SHC. |
Attachment 1: IMG_4315.jpg
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2265
|
Wednesday, November 10, 2021, 08:32 |
Frank Song | ITW | Standard Operation | TM2 | UC#36 | Module Connection |
TM2 with target UC#36 was connected at ITW. |
Attachment 1: IMG_4323.JPG
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2283
|
Wednesday, January 05, 2022, 12:45 |
Frank Song | ITW | Maintenance | TM2 | UC#36 | TM2 SIS with Target and No external Connections |
electrical checked in ITW |
Attachment 1: TM2_with_UCx36.jpg
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2284
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Thursday, January 06, 2022, 10:37 |
David Wang | ITW | Standard Operation | TM2 | | ITW vacuum vessel and TM2 internal cooling lines leak check in pit. |
Frank and I finished ITW and TM2 leak check. TM2 internal water-cooling lines are leak free. They passed 70 psi helium pressure test. We found some small leaks on ITW primary and secondary vacuum vessel. I list them here:
- Exit module 2 service cap top plate to cap body O-ring at SW corner. Leak rate 2XE-8 atm.cc/sec. It is an old leak we found before. Solution: I sprayed high vacuum resin to leak area. It is improved to 3Xe-9atm/sec now. We can leave it there.
- Exit module 1 module to tank flange o-ring at target module side and north side. Leak rate 3XE-8atm.cc/sec. Solution: replace the o-ring. It involves in disconnect exit module 1 and remove it out. We may or may not change it. Let's check the schedule and discuss it later. We need Travis help on module moving out.
- Exit module 1 north side sqaure service panel o-ring. Leak rate 2XE-7 atm.cc/sec. Solution: replace the o-ring. It is a straight forward job. It will be done this shut down.
- Exit module 1 north side round roughing valve panel o-ring. Leak rate 8XE-9 atm.cc/sec. Solution: Replace the o-ring. It involves in disconnecting and removing ITW RV4. It could be done this shut down.
- Big T tank o-ring seal underneath the flange at exit 1 module north side . Leak rate 3XE-8 atm.cc/sec. Solution: None. All modules and module base flange have to been moved out to replace this big o-ring. It is a huge project to change this o-ring . I checked this big o-ring seal every year. It is first time a small leak is found. Maybe, we could try high vacuum resin spray first.
- Dump module flange o-ring at the side by Target module. Leak rate 8XE-9 atm.cc/sec. It cannot be confirmed since the TM o-ring is just beside it. Mostly, the leak is on dump module side. We changed TM flange o-ring every year. But we never changed dump module flange o-ring in history. Many copper cooling lines above the dump module has to be removed to remove the dump module out. I do not think we have time to do it this year. Also, the leak rate is pretty small. Maybe, we can schedule it next year.
Most these small leaks are close to turbopumps. This could be the reason the ITW vacuum on gauges are still pretty good. |
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2288
|
Tuesday, January 11, 2022, 11:50 |
David Wang | ITW | Maintenance | | | ITW Exit module 1 side sqaure panel O-ing seal replacement. |
Frank and I replaced ITW Exit module 1 side square service panel o-ring seal. Also, The target module pit top flange o-ring seal in ITW pit is replaced. |
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2303
|
Thursday, February 10, 2022, 12:24 |
David Wang | ITW | Standard Operation | | | ITW HV test without mdoule. |
Carla did the test. and reported the result as following: HV testing of ITW is complete. It was pretty well behaved up to 59.5kV, and sat at 59kV for 30mins with no sparks (that EPICS caught). There was some strange behaviour of the current between 51kV and 53kV - it was jumping by 20uA or more - but there didn't seem to be any voltage response, and it went away after 53kV (though it returned on the way back down). The test was done in Feb 02. |
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2316
|
Thursday, April 28, 2022, 07:24 |
Frank Song | ITW | Standard Operation | TM2 | Febiad Test Target | Module Connection |
TM2 was connected in ITW with a Febiad Test Target. |
Attachment 1: module_connection_checklist20220426.jpg
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2317
|
Thursday, April 28, 2022, 08:16 |
David Wang | ITW | Standard Operation | TM2 | | Annual ITW water signal interlocks check . |
Annual ITW water signal interlocks check was done with TM2 in ITW. Water signal interlocks on all water circuits related to TM and 2A beam lines in ITW work fine. |
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2326
|
Wednesday, May 25, 2022, 13:43 |
Frank Song | ITW | Standard Operation | TM2 | Febiad-Test | module disconnection |
TM2 with a test target was disconnected in ITW. |
Attachment 1: tm2_disconnection.jpg
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2334
|
Tuesday, June 21, 2022, 18:30 |
Frank Song | ITW | Standard Operation | TM2 | SiC#43 Febiad | Module Connection |
TM2 with Febiad Target SiC #43 was connected in ITW. NOTE: the number of TARGET in attached picture should be #43. |
Attachment 1: TM2_with_sic_42_connected_in_ITW.jpg
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2346
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Tuesday, July 19, 2022, 11:47 |
Frank Song | ITW | Standard Operation | TM2 | SiC#43 Febiad | TM2 with SiC#43 disconnected in ITW |
the module was disconnected in pit and moved to NHC. |
Attachment 1: TM2_with_SiC43_disconnection_in_ITW.jpg
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2350
|
Wednesday, July 27, 2022, 08:11 |
Frank Song | ITW | Standard Operation | TM2 | UCx#38 | Module Connection |
TM2 with Target UCx#38 was connected in ITW. |
Attachment 1: TM2_with_UCx38_connection_at_ITW.jpg
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2361
|
Tuesday, September 06, 2022, 13:58 |
Frank Song | ITW | Standard Operation | TM2 | UCx#38 | module disconnection |
TM2 with Target UCx38 was disconnected in ITW and moved to NHC |
Attachment 1: TM2_with_UCx38_disconnection_in_ITW.png
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2365
|
Tuesday, September 13, 2022, 14:10 |
Frank Song | ITW | Standard Operation | TM2 | UCx#39 | Module Connection |
TM2 with UCx#39 is connected in ITW. |
Attachment 1: TM2_with_UCx#39_connection_in_ITW.png
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2381
|
Tuesday, November 01, 2022, 12:37 |
Frank Song | ITW | Standard Operation | TM2 | UCx#39 | disconnection |
TM2 with spent target UCx#39 was disconnected in ITW then moved to NHC. |
Attachment 1: TM2_with_UCx39_disconnection_in_ITW.png
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2387
|
Tuesday, November 15, 2022, 13:33 |
Frank Song | ITW | Standard Operation | TM2 | UCx#40 | Module Connection |
TM2 with UCx#40 is connected in ITW. |
Attachment 1: TM2_with_UCx#40_connection_in_ITW.png
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2401
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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. |
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. We did Vacseal resin spray on them last year. It looks like the Vacseal spray works . From the result , I can see the o-ring between exit 1 module and T - flange is closing to the end of the life. There are two small leaks on this o-ring now at A and B location. We plan to change this o-ring next winter shut down. We do vacseal spray on them this year. The big O-ring between tank vessel and T -flange looks still ok. Two small leaks are found on location F and G on this O-ring. Not much we can do on them. The leak on location C and B were sprayed with resin yesterday after leak check. They are leak free after spray on check. I will double check them. Leak on location A will be resin sprayed after TM2 is removed and ITW is under vacuum. All TM2 internal water-cooling lines are helium pressurized (70 psi) for 5 minutes each. HS shows 2.5 X E-9atm.cc/sec leak rate. The rest lines are 0.0 X E-9 atm.cc/sec. |
Attachment 1: ITW_vacuum_leak_check_2023.pdf
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2402
|
Monday, January 09, 2023, 14:19 |
Frank Song | ITW | Standard Operation | TM2 | UCx#40 | TM2 with UCx40 disconnection in ITW |
TM2 with target UCx40 was disconnected in ITW and moved to NHC. |
Attachment 1: TM2_with_UCx40_disconnection_in_ITW.png
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2406
|
Tuesday, January 24, 2023, 07:21 |
David Wang | ITW | Maintenance | | | ITW pit general clean up. |
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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2416
|
Monday, February 13, 2023, 09:57 |
David Wang | ITW | Maintenance | | | ITW/ITE primary vacuum back up lines and BVs leak check in target pit. |
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 job, both stations primary back up lines in pit were leak checked . They are good. |