 Tuesday, February 25, 2014, 06:53, David Wang, South Hot-Cell, Repair, TM2, , Leak check on TM2 tube heater (+) water line with blank off(C-seal) installed on WB.
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Chad and I did the leak check on TM2 tube heater (+) water line with blank off and C-seal installed on WB at South Hot Cell.The
line was easy to pump down to 0.0xE-9atm.cc/sec and 0.0XE-4 torr on leak detector. Chad flushed lot helium around the water block (10 sec spray). No response
had been found on leak detector. |
Tuesday, February 25, 2014, 10:00, David Wang, Conditioning Station, Repair, TM2, , helium pressure test on TM2 tube heater (+) water line with blank off(C-seal) installed on WB. 10x
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I did the helium pressure test on TM2 tube heater (+) water line with blank off(C-seal) installed on water block at CS.The leak
detector was hooked directly to the top of the module this time. So base leak rate and base pressure were at the bottom scale on LD. 30 -80 psi helium
was applied to the D lines(both side) with10 psi increasing each time. There is no any tiny response hasbeen found during the test. The lines |
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Thursday, March 06, 2014, 06:28, David Wang, Conditioning Station, Maintenance, TM1, , TM1 had been moved from silo to CS
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TM1 has been successfully moved from silo to CS. The CS vacuum system is connected to TM1. Turbo pumps on TM1 and CS have been started yesterday
afternoon . The starting of TM1 turbos was easy. The pumping down over night is good so far. |
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Thursday, March 06, 2014, 06:58, David Wang, ITE, Maintenance, TM3, , ITE vacuum and leak check on ITE BL2A window flange.
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ITE and TM3 Turbo pumps have been started successfully yesterday. The vacuum reading on all ITE high vacuum gauges are at low E-6 range after one night
pumping down which are good so far. There is no any sign of leak on BL2A window and the flange seal on ITE side. Yesterday afternoon, Ron , Edi ,and I
did a leak check on the ITE BL2A window flange(2aTunnel side). The leak detector was hooked onto BL2A in tunnel. Ron and I supplied helium from TH |
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Thursday, March 06, 2014, 12:59, David Wang, Conditioning Station, Maintenance, TM1, , Restart TM1 and CS TPs
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| Restarted TM1 and CS turbo pumps after the power off. Everything is fine . |
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Thursday, March 06, 2014, 14:12, David Wang, Conditioning Station, Standard Operation, TM1, , TM1 air to vacuum and water lines leak check at CS. 8x
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TM1 air to vacuum and water lines leak check at CS are finished this afternoon. The leak detector is hooked directly to TM1 service cap so the
base LR at LD is 0.0xE-9 atm.cc/sec. I sprayed helium to all air to vacuum seal on the service cap, also applied 70 psi to all water lines(except HS) for
2 minutes each. There is no any tiny response had been found on LD. So All TM1 water lines(except HS) and air to vacuum seals are leak free. The HS circuit |
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Friday, March 07, 2014, 12:45, David Wang, ITE, Standard Operation, TM3, , TM3 and ITE air to vacuum leak check and TM3 water lines helium test.
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With TM3 located in ITE, All air to vacuum seals on ITE primary and secondary vacuum vessel have been leak checked with leak detector hooked
directly on the TM3 service cap.The base LR :00xE-9atm.cc/sec. The ITE IG1 was 1.6xE-6 torr which was good. No leak has been found during the checking.Also,
the TM3 water lines(except HS) had been pressurized with 70 psi helium on each for 2 minutes. There was no response during the test. The ITE and |
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Thursday, March 13, 2014, 07:35, David Wang, ITW, Standard Operation, TM4, , TM4 and ITW turbo pumps have been started
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| I connected ITW vacuum system to TM4. TM4 and ITW turbo pumps have been started successfully. The pumping down is good so far. |
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Wednesday, March 19, 2014, 15:46, David Wang, ITW, Standard Operation, TM4, , TM4 and ITE air to vacuum leak check and TM4 water lines helium test. 7x
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With TM4 located in ITW, All air to vacuum seals on ITW primary and secondary vacuum vessels have been leak checked with leak detector
hooked directly onto the TM4 service cap.The base LR :00xE-9atm.cc/sec. The ITW IG1 was 1.16xE-6 torr which was good. No leak has been found during the
checking.Also, the TM4 water lines(except HS) had been pressurized with 70 psi helium on each for 2 minutes. There was no response during the test. |
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Wednesday, March 26, 2014, 06:57, David Wang, South Hot-Cell, Standard Operation, TM4, Ta#42, Leak check on TM4 HS water line with new Ta #42 target.
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Chad and I leak checked TM4 HS line with Ta#42 target on the module. The leak detector base LR 0.0xE-9 atm.cc/sec, base pressure0.0xE-4 torr. Chad applied
helium to the joints, and flushed the helium around the target. No leak has been found.I will do helium pressure test on this circuit at CS later. |
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Wednesday, April 09, 2014, 11:10, David Wang, South Hot-Cell, Standard Operation, TM3, , TM3 heat shield circuit leack check at SHC
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This Monday morning, Chad and I leak checked heat shielding circuit on TM3 with new target installed. The base LR on LD :0.0xE-9 atm.cc/sec, base pressure
0.0xE-4 torr. Chad sprayed helium twice on the VCR joints. No leak has been found. The circuit will be pressured with helium at CS. |
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Friday, April 11, 2014, 11:35, David Wang, Conditioning Station, Standard Operation, TM3, , Helium pressure test on TM3 HS water line with new Ta target. at CS 6x
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| The helium pressure test on TM3 HS water line with new Ta target is finished at CS. The circuit is leak tight.. No any response on LD. See pictures. |
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Monday, April 14, 2014, 13:58, David Wang, ITE, Repair, , , Reconnected ITE entrance module
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I reconnected the entrance module back to the ITE station. All diagnostic cables, turbo- pump, air lines, water lines on ITE entrance module and BL2A3
window are connected back. |
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Monday, May 05, 2014, 13:05, David Wang, ITE, Repair, TM3, , ITE target module flange seal has been replaced.
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ITE target module flange seal has been replaced.The flan surface and the o-ring groove have been cleaned with Acetone before the new seal is installed.
See attached picture. |
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Monday, May 05, 2014, 13:11, David Wang, ITE, Repair, TM3, , ITE Entrance module has been disconnected.
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| ITE entrance module has been disconnected and the lifting yoke is installed for module move. See attached pictures. |
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Wednesday, May 07, 2014, 10:08, David Wang, ITE, Repair, TM3, , ITE entrance module flange seal had been replaced. 7x
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ITE entrance module flange seal had been replaced yesterday.The flange and the seal groove were cleaned with Acetone before the new seal is installed.
See pictures |
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Wednesday, May 07, 2014, 10:15, David Wang, ITE, Repair, TM3, , ITE TM3, entrance module and BL2A3 window flange seals leak check..
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ITE TM3, entrance module, and 2A3 window flange seals have been leak checked this morning after 2 new seals replacement.The LD base leak rate was 0.0xE-9
atm.cc/sec, base pressure was 0.0 XE-4 Torr. I sprayed lots helium around the TM3, entrance module and 2A3 flange seals. No any response had been
found on LD during the spraying. All three flanges are sealed perfectly now. |
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Thursday, May 15, 2014, 14:38, David Wang, ITE, Repair, TM3, TM3, Bias short on ITE
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Anders and I opened the HV cover in ITE and did a visual check inside ITE HV cover and top of TM3.Bill was with us and took the pictures.
There was nothing obviously wrong when we opened the HV cover in ITE. We disconnected TM3 high current cables from ITE. Then we did an electrical check
on TM3.The TM3 was good and passed megga test (465Mohm at 500V). The module was good and was separated electrically from the ITE at that moment. Then, |
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Monday, June 02, 2014, 11:59, David Wang, South Hot-Cell, Standard Operation, TM1, , Leak check on TM1 HS water line with new UC9# target installed
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Chad and I leak checked TM1 HS and UC9# VCR fittings. No response had been found on leak detector during the test. I will do helium pressure test
on it at CS later. |
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Monday, June 02, 2014, 15:40, David Wang, Conditioning Station, Standard Operation, TM1, , TM1 and CS turbo pumps have been started
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| TM1 and CS turbo pumps have been started. The vacuum readings are fine on all gauges. |
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