 Thursday, November 29, 2018, 06:38, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check TM4 UCx 26 at SHC.
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Chad and I did a leak check on TM4 HS line with UCx 26# installed . Base LR 0.0X E-9 atm.cc/sec. Base pressure 0.0XE-4 torr. No response on leak
detector during leak check. |
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Wednesday, October 03, 2018, 14:16, David Wang, South Hot-Cell, Standard Operation, TM4, Ta #57, Leak check TM4 Lp Ta# 57 at SHC.
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Tried to leak check TM4 Ta57# at TCS. LD failed to pump down properly at fine range. It always tripped at 4 torr. I cheeked all vacuum lines seals and
adapters on top of module to LD. Everything is good. Chad said the VCRs at SHC can not be tightened any more. Discussed with Anders, we decide to move
module TCS and helium pressure test there. The same difficult happened last time on TM4 UCx24# at SHC when leak check. But,it is solved by pressurize |
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Monday, April 22, 2013, 09:33, David Wang, Conditioning Station, Repair, TM3, , Leak check TM3 at conditioning station
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TM3 leak check at conditioning station without target: TM3 all air to vacuum seals have been leak checked . They are all good. Water lines TAR(+-), TUBE(+-),
GAS, MSP , COIL2(+-), EE, HS(1,2) , GE,and WINDOW have been helium pressurized to 70 psi for 2 minutes each . No response had been found on leak detector.
They are leak tight.. Leak detector BR 0.0xE-9atm.cc/sec, BP 0.0xE-4 torr. TM3 and CS vacuum: PNG15.2xE-6 torr, IG1 8.8xE-7 torr,IG2 2.8xE-6torr, IG1S |
Tuesday, February 04, 2014, 08:04, David Wang, South Hot-Cell, Repair, TM2, , Leak check TM2 tube heater (+) water line. 
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Chad and I leak checked TM2 tube heater(+) water line yesterday afternoon. The water line was difficult to pump down on base leak rate, but LD
base pressure was fine . The base pressure on leak detector was pumped to 0.0XE-4 torr quickly. The base leak rate only could be pumped to
4.5 xE-8 atm.cc/sec after 1 hour waiting time. All vacuum connections to leak detector in the target hall were leak checked and they were good. Chad |
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Wednesday, February 05, 2014, 14:05, David Wang, South Hot-Cell, Repair, TM2, , Leak check TM2 tube heater (+) water line from inside service cap in TH.
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Bevan and I did a leak check on TM2 tube heater+ from inside service cap in TH. The leak detector base leak rate 0.0xE-9 atm.cc/sec, base pressure
0.0xE-4totrr. One of side panel on service cap was opened. Bevan sprayed the helium to the "D" line inside the blue insulator.The helium flow
was checked , and he sprayed twice. No response has been found on leak detector. See attachment pictures |
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Thursday, February 13, 2014, 09:24, David Wang, South Hot-Cell, Repair, TM2, , Leak check TM2 tube heater (+) water line with rubber insert blocked WB in SHC
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Chad and I did the Leak checked TM2 tube heater (+) water line with rubber insert plugged water block on " D" in SHC. The
Leak detector was very easy to pump down to the bottom leak rate and pressure. Chad checked the helium flow in SHC, and sprayed 10 second helium on
the block. There is no response had been found during the test. The test was repeated again and no leak has been found. See attachment pictures. |
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Thursday, September 26, 2013, 09:46, maicodallavalle, Conditioning Station, Repair, TM3, , Leak check / Pressure Test
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| TM3 has had all of the water lines pressurized with Helium and the Helium Leak detector was connected to the turbo pumps. There were no leaks detected. |
 Thursday, September 26, 2013, 14:37, Bevan Moss, Conditioning Station, Standard Operation, TM3, NiO#2, Leak check / Pressure Test
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maicodallavalle wrote:
TM3 has had all of the water lines pressurized with Helium and the Helium Leak detector was connected |
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Thursday, August 07, 2014, 13:58, David Wang, South Hot-Cell, Standard Operation, TM4, UCx #10, Leak check on TM4 HS water line with new UCX target.
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Isaac and I leak checked TM4 HS line with new UCX target. The leak detector base LR 0.0xE-9 atm.cc/sec, base pressure0.0xE-4torr. Isaac sprayed helium
on both VCR connections(5 seconds each) and flushed helium around the target for 6 seconds. No response on leak detector. |
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Wednesday, March 25, 2015, 14:25, David Wang, South Hot-Cell, Standard Operation, TM4, Ta#45, Leak check on TM4 HS water line with new Ta#45 target. at SHC
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Chad and I leak checked TM4 HS water line with new Ta#45 target installed at SHC. Leak detector base leak rate 0.0Xe-9 atm.cc/sec, base pressure 0.0Xe-4
torr. Chad sprayed helium twice on each of HS 2 VCR joints.No leak has been found. The joints are leak tight. The helium pressure test will be done
at CS later. |
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Wednesday, September 24, 2014, 15:03, David Wang, South Hot-Cell, Standard Operation, TM4, Ta#44, Leak check on TM4 HS water line with new Ta#44 target. at SHC
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This morning Chad and I leak checked TM4 HS line with new Ta#44 target installed. I calibrated LD before the check. Before check, the LD base LR 0.0xE-9
atm.cc/sec, base LP 0.0xE-4 torr. Chad sprayed helium on both VCR fittings and did a flush around the target. There is no any response had been found on
LD,. The line is good on leak tight. with spray method. No helium pressure test on the HS line at CS since TM4 was moved back to ITE directly. |
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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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Tuesday, June 02, 2015, 14:32, David Wang, South Hot-Cell, Standard Operation, TM4, SiC #31, Leak check on TM4 HS water line with new SiC #31 target. at SHC
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Chad and I leak checked TM4 HS water line with SiC #31 target installed. leak rate:0.0xE-9atm.cc/sec. No leak. The line will be helium pressurized
at CS later.
2015-06-03, helium pressure test the line at CS. 70psi 3 minutes. leak rate 0.0xE-9 atm.cc/sec. No leak. See attachments |
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Monday, July 27, 2015, 15:34, David Wang, ITE, Standard Operation, TM4, , Leak check on TM4 HS water line with new UCX target. at SHC
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Chad and I leak checked the HS line at SHC after UCX target installation. On first round helium spray, one of VCR fitting has a leak to E-6 atm.cc/sec
range. Chad tightened the fitting, and solved the problem. We leak checked both VCR fittings twice. No leak. The line will be helium pressured at CS tomorrow. |
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Tuesday, September 22, 2015, 13:15, David Wang, South Hot-Cell, Standard Operation, , Ta#46, Leak check on TM4 HS water line with new Ta#46 target. at SHC
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| Chad and I leak checked the HS line at SHC. No leak. Leak rate 0.0xE-9atm.cc/sec. |
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Thursday, June 26, 2014, 10:57, David Wang, South Hot-Cell, Standard Operation, TM3, , Leak check on TM3 HS water line with new target. installed.
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Chad and I leak checked the TM3 HS water line with new target installed. No leak has been found during the check. Leak detector base LR 0.0xE-9
atm.cc/sec, base pressure 0.0xE-4 torr. The line will be helium pressurized at CS later. |
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Thursday, February 13, 2014, 14:23, David Wang, South Hot-Cell, Repair, TM2, , Leak check on TM2 tube heater (+) water line with blank off(elastic seal) installed on WB.
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Chad and I did the leak check on TM2 tube heater (+) water line with blank off( + elastic o ring seal) installed on "D" water block
in SHC. We got the same no leak result as we got with rubber insert this morning. |
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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. |
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Wednesday, August 26, 2015, 14:28, David Wang, Conditioning Station, Standard Operation, TM2, ZrC, Leak check on TM2 HS and windowwater line with new ZrC target at SHC
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Chad and I leak checked TM2 HS and window circuit VCR joints with ZrC target and containment box installed at SHC. No leak has been found. They will
be helium pressurized at CS later. |
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Tuesday, September 15, 2015, 08:24, David Wang, South Hot-Cell, Repair, TM1, UCx 13, Leak check on TM1 window circuit soldering stems in service cap.
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I did a leak check on TM1 window circuit 2 soldering stems in service cap.The round side panel was opened for the job. I sprayed helium on
the stems for 10 seconds. The leak detector got a tiny response(from 0.0xE-9 atm.cc/sec to 2.0xE-9 atm.cc/sec). The test repeated again. The second
time, LD climbed to 1.2xE-9atm.cc/sec. It looks like there is a very tiny leak on the stems soldering spots. But , this is not the same leak we found |
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