 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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Thursday, October 19, 2017, 10:11, David Wang, Conditioning Station, Standard Operation, TM4, , Leak check on TM4 HS line at SHC and TCS.
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Chad and I leak checked TM4 HS line after new target is installed yesterday. No leak has been found. Also, I helium pressurized the HS line at TCS this
morning. TM4 HS line is good on this test. The TM4 gas line configuration on TM4 top is leak check as well. No problem. |
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Wednesday, May 17, 2017, 08:31, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check on TM4 HS line at SHC
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Chad and I finished leak check on HS line with UCx target installed on it. Base Leak rate:0.0X 10^-9 atm.cc/sec, Base pressure 0.0X 10 ^-4 torr.
Sprayed helium to VCR joints. No leak has been found . The line will be pressurized with helium at TCS.
Helium pressure test on TM4 HS line is done at TCS. BLR 0.0XE-9 atm.cc/sec. 70psi helium , 2 minutes. No response. The line is leak free. |
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Tuesday, June 27, 2017, 10:26, David Wang, South Hot-Cell, Standard Operation, TM4, Ta#52, Leak check on TM4 HS line at SHC
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LD base LR:0.0Xe-9 atm.cc/sec. No leak has been found during the check. The HS line will be helium pressurized at TCS this week.
Helium pressurized the HS line at TCS. 70 psi 2 minutes, 0.0 x E-9 atm.cc/sec. No leak. |
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Friday, October 25, 2013, 06:58, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check on TM4 target heat shield
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Maico and I leak checked HS circuit after Chad installed the target. The circuit was a little bit difficult o pump down because of residue water moister
inside. But once the moisture was pumped out, the pumping down was smooth and fast. The base leak rate 0.0xE-9 atm.cc/sec, base pressure 0.0xE-4 torr.
Maico checked helium flow before the leak test. Then,He sprayed helium to all 3 VCR fiitings on target with 2 seconds on each one, He also flushed 10 seconds |
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Thursday, December 05, 2013, 14:55, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check on TM4 target heat shield
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Chad and I leak checked TM4 heat shied water circuit at SHC. The pumping down was very good.Base leak rate 0.0xe-9 atm.cc/sec. BP 0.0xe-4torr. Sprayed
helum twice on both VCR fittings.There is no response on leak detector. The circuit is leak tight. |
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Thursday, May 02, 2024, 15:23, David Wang, South Hot-Cell, Development, TM3, , Leak check on TM3 new containment box window line VCR fittings.
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After new containment box installation on TM3, Chad and I did a helium spray leak check on two VCR fittings on front side water lines. they are leak
free.
Helium pressurize window water line to 70 psi for 3minutes. No response on leak detector which is 0.0xe-9 atm.cc/sec. |
Thursday, July 24, 2014, 18:21, Grant Minor, South Hot-Cell, Repair, TM2, No target / no source tray, Leak check on TM2 ionizer tube cooling lines C and D - module side 
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Target Ionizer tube cooling lines "C" and "D" in Target Module 2 were both leak checked at the Hot Cell. The lines were both
blanked-off.
Bill Paley was present with David Wang in the Target Hall, operating the leak detector. Grant Minor and Anders Mjos were present with Chad |
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Thursday, August 02, 2018, 07:57, David Wang, Conditioning Station, Standard Operation, , , Leak check on TM2 UCx #23 @ TCS and SHC.
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I did a helium pressure test on TM2 HS line at TCS. At 70psi helium, the leak rate is 2.5 xE-7 atm.cc/sec. I think this is the number that close to result
before which is 1.7xE-9 atm.cc/sec. WE know there is a small leak on this water block seal. Chad and I did helium spray check yesterday at
SHC. It was good at bottom scale. No much worry on this low E-7 range leak. |
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Thursday, November 09, 2017, 09:34, David Wang, Conditioning Station, Standard Operation, TM2, Ta#55, Leak check on TM2 HS line at SHC and TCS.
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The TM2 HS line was leak checked at SHC yesterday . 0.9xE-9 atm.cc/sec.Helium sprayed by Chad, NO leak. It was helium pressurized at TCS this morning.
Leak rat:2.5 XE-7 atm.c/sec. The result is same as last time check. No concern. |
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Tuesday, December 02, 2014, 13:33, David Wang, South Hot-Cell, Development, TM2, , Leak check on TM2 tube heater +(D) at SHC
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Chad and I leak checked TM2 tube heater+(D) circuit at SHC with water bypass loop and new seals installed on the water block. The LD base LR 0.0xE-9
atm.cc/sec,base pressure0.0xE-4 torr. Chad sprayed helium on the leak check area in SHC for 5 seconds. No any response has been found on LD during 1minutes
waiting time. The test was repeated again and the result is same. NO LEAK at this stage! After the TM2 is moved to CS , The D line will be pressured |
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Wednesday, June 26, 2013, 11:03, David Wang, South Hot-Cell, Standard Operation, TM1, , Leak check on TM1 UCx target heat shield
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| Chad and I leak checked the TM1 UCx target heat shield at SHC. No leak has been found so far. |
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Wednesday, March 02, 2016, 10:04, David Wang, ITW, Standard Operation, TM2, , Leak check on ITW and TM2.
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Dan and I leak checked TM2 and ITW primary vacuum vessel. It was found a 1X E-7 atm.cc/sec leak on top T flange seal between TM2 and dump module in first
time check. But it is not a repeatable leak. I checked the same spot and around area two more times with increased helium volume.It did not show up again.
The first response could be a helium drift to dry scroll pump. I will check it again later. The primar vacuum vessel on ITW and TM2 are leak free. |
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Friday, March 01, 2013, 11:35, David Wang, ITE, Maintenance, TM4, , Leak check on ITE and TM4.
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The leak check on TM4 and ITE is done. All primary vacuum vessel , secondary vacuum
vessel on TM4 and ITE are leak tight. There is no any response had been found on leak detector(leak detector base LR 0.0xE-9 arm.cc/sec). All water
lines had been pressurized to 70 psi helium for 3 minutes. They are all perfect leak tight( I cant find even a tiny response on leak detector) except |
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Wednesday, April 03, 2013, 12:26, David Wang, ITE, Maintenance, TM4, Sic LIS/RFQ, Leak check on ITE TM4.
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TM 4 had been leak check in ITE due to relatively high PNG1 and IG1 readings.All TM4 primary and secondary vessel air to vacuum seals had
been leak checked. All water lines in TM4 had been helium pressured . There is no leak had been found so far. |
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Monday, November 09, 2015, 16:47, Anders Mjos, Conditioning Station, Maintenance, TM3, FEBIAD Test Target, Leak check of Service Cap
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Service cap leak checked this afternoon. Found multiple leaks of 10E-8 to 10E-7 range. Connected to the backing line with IG1 at ~4E-6 T, CG1A around
40 mT. Got responses around large round flange on top, rectangular side panels, water f/t on GND and water f/t on HV. Will resume leak checking tomorrow
to attempt to pinpoint sources of leak more accurately. |
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Wednesday, July 25, 2018, 13:21, Anders Mjos, ITW, Repair, TM2, Nb#8, Leak check of ITW
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ITW Entrance Module was leak checked yesterday with the support of Vacuum Group (Dimo & Edi). The leak detector was connected to primary backing
vacuum line. A leak response was found near the bellow for the beam profile monitor on top of the Entrance Module. It could be confirmed today by actuating
the monitor, that the leak was indeed at that location. The plan is to move the TM and Entrance Module out for target exchange and repair, respectively. |
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Wednesday, March 20, 2013, 08:19, David Wang, Conditioning Station, Repair, TM4, , Leak check new installed TM4 TP1 at conditioning station.
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I leak checked new installed TM4 TP1 at conditioning station. The CS vacuum gauges reading were at 1.0-1.5xE-6 torr . Leak detector base leak rate 0.0xe-9atm.cc/sec,
base pressure 0.0xe-4torr. I sprayed helium around the pump inlet flange and KF 25 pump outlet flange to pump joint. There is no response on leak
detector. The new installed TP1 is leak tight. |
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Thursday, June 11, 2015, 13:43, Dan McDonald, Assembly/Bench Test, Repair, TM2, , Leak check following tweaking of cooling line gaps
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Maico, Chad and I conducted a leak check on all affected lines following tweaking of cooling line gaps. All lines pumped down to a level of 10-9
torrliter/sec with no leaks detected with Helium. |
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Friday, June 26, 2015, 15:38, Anders Mjos, Conditioning Station, Development, TM2, , Leak check and HV test
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Roughing started by David.
Friday, June 26, 2015, 15:31: Started TP1S
Friday, June 26, 2015, 15:38: Started TP1 & TP2 |
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