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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Category Type Module Target/Number Subject
  253   Wednesday, March 06, 2013, 12:50 Travis CaveSouth Hot-CellMaintenance  module move

ITW EX1 have been moved back to the west target station from the south hot cell.

  252   Wednesday, March 06, 2013, 10:09 Travis CaveITWMaintenance  module move

ITW EX1 has been moved from the west target station to the south hot cell for the seal replacement on the west station.

  251   Friday, March 01, 2013, 11:35 David WangITEMaintenanceTM4 Leak check on ITE and TM4.
 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 GE water cooling line. On the GE water line, the leak detector got a instantaneous response once I applied the helium to the circuit.The leak rate climbed directly from 0.0xe-9 atm.cc/sec to 1.5 xe-5 atmcc/sec even if I stopped the helium pressurizing immediately. Once I purged the helium out of the line, the leak rate return to 0.0XE-9 atm.cc/sec quickly. I repeated the test on GE water line again and got exactly same result as the before. I would say the leak on the ITE GE water circuit isn't a small leak. The same test could be fulfilled once the TM4 is in CS later. 
  250   Tuesday, February 26, 2013, 13:53 David WangConditioning StationRepairTM4 Replaced TM4 TP1

Bevan and I replaced TM4 TP1 today at conditioning station .The pump will be started this week when I do ITE and TM4 leak check .

  249   Tuesday, February 26, 2013, 13:24 Travis CaveConditioning StationStandard OperationTM4CS Test Target #1module move

TM#4 with CS Test Target #1 (dummy target) moved from the conditioning station to the east target station. Move went well.

  248   Tuesday, February 26, 2013, 10:26 Travis CaveITWStandard OperationTM1 module move

TM1 moved from the west station to the southwest silo. Move went well.

  247   Friday, February 22, 2013, 13:13 Bevan MossConditioning StationDevelopmentTM4CS Test Target #1Broken Turbo Pump

 Today while putting the cover on the cord that goes to the controller was bumped. This bent the connector down and caused a vacuum leak. I tried to tighten the bolts in the hope the leak would go away but it did not and I sheared one of the bolts off. David is inquiring with Edi if the pump can be repaired or if it needs to be replaced. The good news is that the interlocks work exactly as planned. Upon detecting a leak they shut the turbos down and closed all of the valves they even beat the turbo controllers for overload.

David believes we can rotate the pump slightly to avoid this problem in the future. Hopefully repairs can start on Monday. 

The conditioning station will be shut down for the weekend.

Attachment 1: IMG_0528.JPG
IMG_0528.JPG
  246   Friday, February 22, 2013, 13:02 Bevan MossConditioning StationDevelopmentTM4CS Test Target #1HV test with Water

 Hello Ray and Yi

Completed a HV test with the water flowing today.

8.96 Mohm

56.4 PSI across the load

16.5 GPM through the loads

some sparking occurred see attached file.

module was biased with all items tied to common to 40kV. Leakage current was less than 100uA.

This was a very successful test.

Attachment 1: vacuum_for_40k.JPG
vacuum_for_40k.JPG
  245   Thursday, February 21, 2013, 14:05 David WangITWRepairTM1 Disconnected EXIT1 in ITW.

Disconnected EXIT1 in ITW. All cables , wires and air lines are label marked.

  244   Thursday, February 14, 2013, 09:31 David WangITWRepair  ITH MP1 is replaced.

Edi and I replaced the broken ITH MP1 in target hall with a new pump. The old pump was leak on oil. There were no oil had been left in the old pump by checking the sight glass.Thats the reason of  the pump  failure.The tray which the old pump sat on was full of leaking oil ( highly contaminated ). The old pump was bagged in 3 thick plastic bags ,and the tray was cleaned before the new pump was installed. The working area had been cleaned up and surveyed couple of times after the job. Everything is good. The new pump had been tested after the installation. It works fine.

  243   Friday, February 08, 2013, 11:42 Grant MinorITEMaintenance  TAPC 477 resolved - ISAC elec. room gas cylinder

See attached TAPC 477 documentation.

Attachment 1: TAPC-477_resolved_8Feb2013.pdf
TAPC-477_resolved_8Feb2013.pdf TAPC-477_resolved_8Feb2013.pdf TAPC-477_resolved_8Feb2013.pdf
  242   Wednesday, February 06, 2013, 14:34 Bevan MossConditioning StationDevelopmentTM4CS Test Target #140kV All Common w/o Water Test

 Today the module was biased to 40kV in the conditioning station. The current draw was 0uA. Sparking started at 27 kV. I have attached the recording from the strip tool of the vacuum while we were testing. After consulting Pierre if we should take the module to a higher voltage it was decided not to. The purpose of this test we to check the interaction between the module, cover, new cooling line, EE and EINZEL cables. This test was considered a success and although there are no anticipated problems care should be taken when taking the module past 40kV for the first time.

Attachment 1: 40kV_no_water_HV_test.JPG
40kV_no_water_HV_test.JPG
  241   Monday, January 28, 2013, 12:26 Travis CaveConditioning StationDevelopment  Switches connected

the switches and the solenoid are all wire up to 24VDC, when you open either of the little doors the solenoid switches this is also true if there is a power loss. currently the solenoid is powered.

  240   Thursday, January 24, 2013, 13:30 David WangITWStandard OperationTM1 ITW-TM1 2013 winter shut down leak check.

2013 winter shut down ITW-TM1 primary vacuum vessel, secondary vacuum vessel, and water lines leak check: connected leak detector to TP2(primary and water lines) and TP4S (secondary). base leak rate 0.0xE-9atm.cc/sec,base pressure 0.0XE-4torr. Sprayed helium to all primary vacuum seal and there is no response on leak detector. Helium pressurized all water lines(except HS) at 70psi ,3mins.Tube heat(+) no response, tube heater(-)1.6xe-9atm.cc/sec, target oven(-)5.8xe-9atm.cc/sec, target oven (+) 6.9xe-9atm.cc/sec, EE 5.7xe-9atm.cc/sec, MSP no response, window 7.5 xe-9atm.cc/sec.All water lines are water leak free.  Two leaks had been found on secondary vacuum vessel. One is on exit 1 to tank o-ring (east side, E-N corner). The leak detector got   responses from 1.4 to1.7 xe-7 atm.cc/sec scale . The test  hadbeen repeated 4-5 times and   confirmed the location   . The second one is a small leak which  is on exit 2 to tank o-ring(east side, close to E-N corner). The leak detector got  responses from 1.4 to 1.8xe-8atm.cc/sec scale. The test had been repeated 3 times and confirmed the location. As the present plan. we will replace the exit1 to tank o-ring during this year shut down time.

  239   Friday, January 18, 2013, 17:01 Grant MinorConditioning StationDevelopmentTM4 Photos of the CS with TM4 (after the no-module HV test, only vacuum connected)

Attached are some photos of TM4 in the Conditioning Station after the no-module HV test completion.  Only vacuum services are connected.

Attachment 1: CS_post_HV_test_w_TM4_18Jan2013_001.jpg
CS_post_HV_test_w_TM4_18Jan2013_001.jpg
Attachment 2: CS_post_HV_test_w_TM4_18Jan2013_003.jpg
CS_post_HV_test_w_TM4_18Jan2013_003.jpg
Attachment 3: CS_post_HV_test_w_TM4_18Jan2013_004.jpg
CS_post_HV_test_w_TM4_18Jan2013_004.jpg
Attachment 4: CS_post_HV_test_w_TM4_18Jan2013_005.jpg
CS_post_HV_test_w_TM4_18Jan2013_005.jpg
  238   Friday, January 18, 2013, 16:56 Grant MinorConditioning StationStandard OperationTM4 VAT valve btwn roughing and nuc. vent. closed

Bevan attempted to start pumping down on TM4 today remotely but there was an issue.  He will report on Monday.

I went into the Target Hall this afternoon while on the phone with Bevan and performed the following:

- Checked the knurled vent valves on the side of each turbo, both were found to be in the tightened position (all the way clockwise)

- Closed the VAT valve between the scroll pump and the nuclear ventilation

  237   Friday, January 18, 2013, 11:17 David WangSouth Hot-CellStandard OperationTM4dummy targetTM4 heat shield circuit leak check with dummy target on.

Chad and i did a leak check on TM4 heat shield circuit with installed dummy target at SHC today. The leak detector is pumped to 0.0xE-9atm.cc/sec.Chad sprayed helium twice on each  VCR joints .There is no any response had been found on the leak detector during each 45 seconds waiting time. The TM4 heat shield circuit with dummy  target is leak tight so far.  

  236   Friday, January 18, 2013, 11:15 Travis CaveConditioning StationStandard OperationTM4CS Test Target #1module move

TM#4 with the test target #1 is now in the conditioning station, move went well.

  235   Friday, January 18, 2013, 09:10 Travis CaveSouth Hot-CellStandard OperationTM4CS Test Target #1Electrical check

Electrical check performed on the CS Test Target #1 at the south hot cell. See PDF for details.

Attachment 1: CS_Test_Target_#1_Elec_check.PDF
CS_Test_Target_#1_Elec_check.PDF
  234   Thursday, January 17, 2013, 11:18 Travis CaveSouth Hot-CellStandard OperationTM4 module move

TM#4 has been moved from the SW silo to the south hot cell, move went well.

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