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ID Date Authordown Category Type Module Target/Number Subject
  453   Friday, September 13, 2013, 07:49 David WangConditioning StationDevelopmentTM3 TM3 water lines leak check at CS

I leak checked TM3 water lines at CS with 60 psi and 80psi helium. The base leak rate is 5.0xe-9 atm.cc/sec. Each circuit 3 minutes helium pressurizing for each time test. No any respose had been found on leak detector during the test. See attachment

Attachment 1: TM3_water_lines_leak_check_at_CS.pdf
TM3_water_lines_leak_check_at_CS.pdf TM3_water_lines_leak_check_at_CS.pdf TM3_water_lines_leak_check_at_CS.pdf TM3_water_lines_leak_check_at_CS.pdf TM3_water_lines_leak_check_at_CS.pdf TM3_water_lines_leak_check_at_CS.pdf
  454   Friday, September 13, 2013, 08:05 David WangSouth Hot-CellRepairTM4 TM4 coil 1 leak check in SHC

Leak checked TM4 coil1 in SHC with Isaac . The leak detector only can pump down to 1.5xE-7 atm.cc/sec. The leak detector got the response once the helium valve is open, not even close to the leak area. The leak detector got a very big response when the helium probe was put close to the coil terminal block on target front side and spray helium for 2 clicks. The leak detector got a small  response when the probe was put close to water block area and spray helium for 2 clicks. The leak is located on the front target side coil line but not from water blocks. The leak is too big to be further pin pointed by this method. See attachment

Attachment 1: TM4_coil_1_leak_check.pdf
TM4_coil_1_leak_check.pdf TM4_coil_1_leak_check.pdf
  459   Monday, September 23, 2013, 13:55 David WangSouth Hot-CellStandard OperationTM3 window circuit leak check

This morning, Bevan and I leak checked window circuit on TM3 at SHC after containment box was installed. It took about 20minutes to pump down the circuit to  0.0xE-9atm.cc/sec. Bevan sprayed helium on both VCR joints and a final splash. No response had been found on leak detector.

  527   Friday, October 25, 2013, 06:58 David WangSouth Hot-CellStandard OperationTM4 Leak check on TM4 target heat shield

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 helium around the target. There were no any response during all these test time on leak detector.He checked the helium flow again after the test  and confirmed the helium flow.  The HS circuit is leak tight.

  531   Thursday, October 31, 2013, 10:36 David WangITWStandard OperationTM4 I moved 5 shielding blocks from ITE to ITW.

I moved 5 shielding blocks from ITW to ITE. The ITW  is configured to take proton beam.

  536   Wednesday, November 06, 2013, 10:41 David WangSouth Hot-CellRepairTM2 Installed 2 turbopumps on TM2

Bevan and I installed 2 turbo pumps on TM2. The o- ring flanges on TM2 had been cleaned before the installation.

  537   Tuesday, November 12, 2013, 09:51 David WangITEStandard OperationTM3 TM3 disconnection

TM3 has been disconnected this morning and  purged all HV water lines. I found the power plug for all turbo pump fans wasnt connected  during the last run. That maybe the one of the reason on that ITE TP3 failure.

  542   Wednesday, November 13, 2013, 10:01 David WangConditioning StationRepairTM2 TM2 leak check at conditioning station

I leak checked TM2 at conditioning station this morning. All air to vacuum seals on the top of the module are good. All water lines are pressured with 60 psi helium for minutes each. One of the tube heater + water line( 2lines for tube heater + for supply and return) has a huge response on 60 psi helium pressurizing. The leak rate went from 6.0xE-9atm.cc/sec to maximum leak rate in 5 seconds and I saw a pressure increasing either. when I pressurize the other side tube heater + line ,the leak detector also had a response,but it is slower than first side .Since the top of the water adaptor isn't sealed , so I think the leak should be in one line only. All other water lines are leak tight since I didnt see any obvious response on leak detector at 5 to 6x E-9 atm.cc/sec which is very low on leak rate. 

Attachment 1: TM2_leak_check_at_CS_2013-11-13.pdf
TM2_leak_check_at_CS_2013-11-13.pdf TM2_leak_check_at_CS_2013-11-13.pdf
  549   Tuesday, November 19, 2013, 14:24 David WangITERepair  ITE TP3
Hi all, The old  ITE TP3 pump is moved out and the new pump is  in postion .Since this time I used a new holding ring(1 piece) insead of old 2 pieces holding ring which are thicker than new ring, the old holding  bolts are a little bit too long for the thread holes on the  ITE exit 1. I have to find the right length bolts for this new holding ring. The pump is in position,and all connection are done except the holding bolts. I will put the new bolts on and tight them when I connect the TM4 in ITE next time. So, If I am not here at that time and you need to connect TM4 and start the pumps in ITE, please check all the bolts are tighted before you do anything.
  563   Tuesday, December 03, 2013, 09:58 David WangITWStandard OperationTM4 I moved 5 shielding blocks from ITW to block storage area.

I moved 5 shielding blocks from ITW to block storage area.

  567   Wednesday, December 04, 2013, 11:05 David WangITWStandard OperationTM4Ta41#I disconnected TM4 in ITW

I disconnected TM4 in ITW .The job took about 20minutes and I got 0.11 msv dose.

  568   Wednesday, December 04, 2013, 11:15 David WangITERepairTM4 New bolts are installed on ITE TP3.

I installed 8 new bolts(3/8-16 UNC x1.25  STL) on the ITE TP3. The ITE TP3 replacement job is done. Everything is connected back to the pump. and it is ready for starting.

  573   Thursday, December 05, 2013, 14:55 David WangSouth Hot-CellStandard OperationTM4 Leak check on TM4 target heat shield

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.

  574   Thursday, December 05, 2013, 14:57 David WangITEStandard OperationTM4  Connected TM4 in ITW

I connected TM4 in ITE. All turbo pumps have been started and wok fine including new TP3. Everything is good so far.

  577   Monday, December 09, 2013, 14:47 David WangITEStandard OperationTM4 I moved 5 shielding blocks from block storage area to ITE.

I moved 5 shielding blocks to ITE. The ITE is configured to take proton beam.

  581   Monday, January 20, 2014, 13:35 David WangITEStandard OperationTM4 5 shielding blocks had been moved out of ITE

5 SHIELDING BLOCKS HAD BEEN MOVED OUT OF ITE.AIR SAMPLE AND SWIPED FIRST BLOCK AND ITE PIT.NOTHING HAD BEEN FOUND ON ALPHA MONITOR AND OTHER TWO MONITORS.

  582   Monday, January 20, 2014, 13:38 David WangITEStandard OperationTM4 DISCONNECTED TM4 IN ITE.

I DISCONNECTED TM4 IN ITE. ALL WATER LINES HAD BEEN PURGED OUT WITH PRESSURE AIR.

  586   Wednesday, January 22, 2014, 10:51 David WangITERepair  Removed 4 shielding blocks located on top of preseperator in TH

Travis and I removed 4 shielding blocks located on top of pre-seperator  in TH. This is a job for ITE harp 9 re-installation after it  is repaired . The blocks move are successful.

  591   Tuesday, February 04, 2014, 08:04 David WangSouth Hot-CellRepairTM2 Leak check TM2 tube heater (+) water line.

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 checked helium flow in SHC. He sprayed helium twice on tube heater(+) water block soldering joints. I did not see any response on leak detector in TH.The base Leak rate and base pressure did not move up during the test.  See attachment pictures.

Attachment 1: IMG_0012.JPG
IMG_0012.JPG
Attachment 2: IMG_0013.JPG
IMG_0013.JPG
  592   Tuesday, February 04, 2014, 09:42 David WangSouth Hot-CellRepairTM2 pressure test on TM2 tube heater +(D) water line.

Chad and I did a pressure test on TM2 tube Heater+(D) water line.I pressurized the D line with shop air from quick connectors(both ends) on service cap.chad applied bubble soap onto the D water block in SHC. The test started from 5psi,and increased 5psi each time to 40 psi. From 5 to 35 psi, no bubble has been found on water block. At 40 psi , bubble appeared from blind blank off seal , but not from soldering joints. Since the o-ring seal for the blank off is  vacuum seal , but not for pressurizing, It is understandable the seal could not hold 40 psi pressure air. No bubble had been found on the D water block soldering joints .See attachment pictures.

Attachment 1: 015.JPG
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Attachment 2: 016.JPG
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