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.

Chad and I did the pressure test on TM2tube heater+(D) water  line at SHC with shop air.We tested from 30psi to 80psi on both side of D line. The bubbles were found at 50-55psi on blank off seal in SHC.

David Wang wrote:

Chad and I did the pressure test on TM2tube heater+(D) water  line at SHC with shop air.We tested from 30psi to 80psi on both side of D line. The bubbles were found at 50-55psi on blank off seal in SHC.

 I would like to correct this E-LOG. There is no real  leaking bubble had been found during the whole test according to the information supplied by Chad  Fisher during  this afternoon meeting. I would like to attach some pictures took from TH during this test.

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.

I did the helium pressure test on Tube heater+ line this morning. The vacuum on CS and TM2 are very good. The base lake rate on leak detector was 1.7xE-7 atm.cc/sec. Base pressure was 0.0xE-4torr.  I applied helium to the "D"line .The test started from 30psi up to 80psi on both side "D" line.The base leak rate slightly changed to 1.9xE-7 atm.cc/sec during the test,but not base pressure. At this base leak rate level, No obvious leak had been found . See attachment pictures. The test will be repeated later when the base leak rate could be pumped into E -8 or E-9(the best) range.            

I stopped turbo pumps and disconnected vacuum system on TM2 and CS. The TM2 will be moved to SHC for C seal installation on "D" water block.

Containment box has been removed and water block jig installed.

The blank off with the o-ring has been removed, manipulator fixed, circuit D water block sealinhg surfaces cleaned and blank off with c-seals installed and torqued. Leak check will occur shortly.

Circuit D has passed the vacuum leak check. Jig has been removed and containment box re-installed for move to conditioning station.

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.

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 are perfectly sealed. Also i sprayed the helium on the top of the service cap .All  air to vacuum seals on the top are good either. See attachment pictures.

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.

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  to the helium test line(located in  ITE pit) which  we have on ITE BL2A window flange.   The helium test line end nozzle is just located under  the bottom of the 2A window flange. Edi was in BL2A tunnel checking the leak detector. We supplies 10- 15 psi helium 3 times to the test line. Each time for 10 seconds. The helium flow was checked twice and they were good. The LD base LR was 2.2xE-5 atm.cc/sec, After 70 seconds , The leak rate on LD was increased to 5.3 xE-5 atm.cc/sec. The leak rate reading  recovered after 20seconds. There is no obviously conclusion where the leak is. At that moment, Ron said, he and Edi would like to do  some further leak check  in 2A tunnel,and I went back to my job.

Restarted TM1 and CS turbo pumps after the power off. Everything is fine .

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 can not be tested at this time since the VCR caps are not installed. The turbo pumps at CS and TM1 will be turned off before I leave.  See attachment pictures.

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 TM3 are good on leak checking.See attachment pictures

ITE entrance module has been moved from the east station to the south east silo.

prep'ed area for work:

- removed shield plug from window clamp area

- inspected clamp from tunnel side and from top of target station: video recorder was not working, will try again tomorrow.

- corrosion seen on beam pipe cradles, see photos. corrosion also seen on beampipe, clamp and vacuum tank. will try to vaccuum loose rust tomorrow.

note: gamma spec of rust, white powder from RPG located in \\trwindata\groups\remote handling\Documents\2014\2A3 Window folder (added pdfs as attachments 2014 mar 4)

I connected ITW  vacuum system to TM4. TM4 and ITW turbo pumps have been started successfully. The pumping down is good so far.

Video inspected 2a3 window joint this morning.

Screenshots from video showing debris forming around aluminum cradle and brown/red dust on top of beam pipe.

Inspection video can be seen in its entirety at \\trwindata\groups\remote handling\Videos\2014\2014_2A3window