Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  RH-ISAC, Page 22 of 140  Not logged in ELOG logo
Entry  Friday, October 18, 2013, 14:56, Travis Cave, South Hot-Cell, Standard Operation, TM4, no target, Electrical check TM#4_no_target_post_coilelectest.PDF

With the coil line removed an electrical check was done on TM#4 at the South Hot Cell see attached pdf.

Entry  Wednesday, October 23, 2013, 09:28, Travis Cave, South Hot-Cell, Standard Operation, TM1, UC#7, module move 

TM#1 with UC #7 has been moved from the south west silo to the south hot cell.

Entry  Wednesday, October 23, 2013, 12:07, Travis Cave, South Hot-Cell, Standard Operation, TM1, no target, module move 

TM#1 with no target has been moved back to the south west silo from the south hot cell.

Entry  Thursday, October 24, 2013, 11:32, Travis Cave, South Hot-Cell, Standard Operation, TM4, no target, module move 

TM#4 with no target has been moved from the conditioning station to the south hot cell.

Entry  Thursday, October 24, 2013, 15:43, Anders Mjos, South Hot-Cell, Standard Operation, TM4, Ta#41, Target conductance Ta#41_electrical_measurement_TGHT_in_SHC.pdf

The conductance check on the electrical check was found to be outside of accepted values for the TBHT at 7.0 mOhm. A successful attempt to reduce the conductance was made by re-tightening the bolts on the TGHT legs in the SHC. Grant operated the manipulator and torqued the bolts to about 1/8 of a turn with the air ratchet. The conductance across the TGHT (A-B) could be improved from 7.0 mOhm to 6.2 mOhm by re-tightening the bolts. The value is still somewhat higher than usual, but was deemed to be acceptable. Measurements attached.

    Reply  Thursday, October 24, 2013, 15:54, Grant Minor, South Hot-Cell, Standard Operation, TM4, Ta#41, Target conductance 

Anders Mjos wrote:

The conductance check on the electrical check was found to be outside of accepted values for the TBHT at 7.0 mOhm. A successful attempt to reduce the conductance was made by re-tightening the bolts on the TGHT legs in the SHC. Grant operated the manipulator and torqued the bolts to about 1/8 of a turn with the air ratchet. The conductance across the TGHT (A-B) could be improved from 7.0 mOhm to 6.2 mOhm by re-tightening the bolts. The value is still somewhat higher than usual, but was deemed to be acceptable. Measurements attached.

1. TGHT leg bolts were loosened, and resistance was measured very high, as expected.

2. TGHT leg bolts were then tightened, loosened, and tightened again, and the resistance improvement was then measured (from 7.0 mOhm to 6.2 mOhm).

3. Another attempt was then made to loosen and tighten to see if there would be further improvement.  The right bolt was loosened, but the left bolt was found to be quite stiff and was left as-is (not fully loosened) for fear of breaking the supporting insulator.  Both bolts were then re-tightened, and resistance was checked to be about the same as achieved during the previous loosening / tightening attempt (step 2 above).

To tighten the bolts in all cases: the air ratchet was used first to turn the bolts "air tight" (air pedal only, no manual force) and then with the air pedal held down, manual torque was applied to turn no more than 1/8th of a turn.

Entry  Friday, October 25, 2013, 06:58, David Wang, South Hot-Cell, Standard Operation, TM4, , 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.

    Reply  Friday, October 25, 2013, 14:09, Travis Cave, South Hot-Cell, Standard Operation, TM4, Ta#41, Target conductance TM#4_Ta#41_elec_test_SHC.PDF

Anders Mjos wrote:

The conductance check on the electrical check was found to be outside of accepted values for the TBHT at 7.0 mOhm. A successful attempt to reduce the conductance was made by re-tightening the bolts on the TGHT legs in the SHC. Grant operated the manipulator and torqued the bolts to about 1/8 of a turn with the air ratchet. The conductance across the TGHT (A-B) could be improved from 7.0 mOhm to 6.2 mOhm by re-tightening the bolts. The value is still somewhat higher than usual, but was deemed to be acceptable. Measurements attached.

 The full electrical check was done on October 25th 2013. The results are in the attached PDF. The higher value of the conductance was dealt with see Anders Mjos elog entry for those details.

Entry  Friday, November 01, 2013, 09:08, Travis Cave, South Hot-Cell, Standard Operation, TM2, no target, module move 

TM#2 has been moved from the north west silo to the south hot cell. The module has a field of about 3.1mSv/hr when it was lowered into the hot cell.

Entry  Monday, November 04, 2013, 10:46, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Exploration TM2_20131104.jpg

TM2 is now in the hot cell with the containment box off for inspection and eventual blank off off the water blocks.

Upon initail inspection the status (fron a hot cell point of view) is:

-Water block jig is equipped/on

-There is a thermocouple line that will need to be removed

-TM2 requires a new front containment box cover - already manufactured and waiting for installation

 

Entry  Tuesday, November 05, 2013, 10:37, chad fisher, South Hot-Cell, Repair, TM2, , Thermocouple wire removal 

The old thermocouple wire has been sucessfully removed from the module.

Thanks Bevan, Travis and David.

Entry  Wednesday, November 06, 2013, 10:41, David Wang, South Hot-Cell, Repair, TM2, , 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.

Entry  Tuesday, November 12, 2013, 10:59, Bevan Moss, South Hot-Cell, Standard Operation, TM2, , Electrical Test tm2_elec_test.pdf

 Don Jackson and Myself completed started an electrical test on TM2. All lines passed the with OL to ground. When testing in between the lines individually there were several lines that read other than OL. It was decided to abandon the testing as there were too many "failures". The results are attached. The testing will be repeated in the conditioning station with vacuum. It is not expected that this will change anything as during a quick visual inspection it appears the lines are touching. Of note the water block jig was removed this morning by Chad.

Entry  Thursday, November 14, 2013, 08:08, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Blank off and jig removal TM2_20131108.jpgTM2_20131112.jpg

Firday, November 8 all water blocks (excluding I and K) were blanked off and vacuum leak checked. No responses were found. (First Picture)

I and K could not be blanked off without removal of the water block jig. Also, I dropped one of the blank offs onto the table, so one line could not be blanked off until a new clean blank off was inserted into the cell. In addition, there was still reminace of a bolt in block Ias it aslo could not be removed until the water block jig was removed.

Tuesday, November 12 a new blank off was put into the cell. The water block jig was removed, which was very easy, confirming documentation from installation (in 2008?) that it fit very well / the blocks were bent and soldered to the jig very carefully.

Screw was removed from I and both I and K were blanked off and vacuum leak checked. No response. (Second Piccture)

Containment box was re-installed and module ready to move to the conditioning station by noon.

 

 

 

Entry  Tuesday, November 19, 2013, 10:52, Travis Cave, South Hot-Cell, Standard Operation, TM3, NiO#2, module move 

TM#3 with NiO#2 moved from ITE to the south hot cell.

Entry  Wednesday, November 20, 2013, 08:50, chad fisher, South Hot-Cell, Standard Operation, TM3, NiO#2, NiO#2 removed TM3_20131120.jpgTM3_20131120_2.jpg

NiO#2 has been removed from TM3

Entry  Wednesday, November 20, 2013, 09:52, Travis Cave, South Hot-Cell, Standard Operation, TM3, no target, module move 

TM#3 with no target has been moved from the south hot cell to the north east silo.

Entry  Thursday, November 21, 2013, 12:12, Anders Mjos, South Hot-Cell, Standard Operation, TM3, NiO#2, End of beam target inspection - ANODE does not hold 250V 

The target was inspected by Chad and Anders in the Hot Cell. Electrical megger tests were done during the assembly. It was found that Insulators No 3 (ITD0311) and No 2 (ITD0310) failed to hold voltage after the run.

  [V] [kOhm]
ANODE - HS 40 21
ANODE - TGT 100 55
HS - TGT 100 55
Lid removed    
ANODE - HS 40 21
ANODE - TGT 90 41
HS - TGT 100 55
Target removed    
ANODE - HS 245 139
No 3 Ins - TBHT 0 0
No 2 Ins 110 64
No 2 Ins removed    
ANODE - HS 540 OL

EE to HS was measured OL at 1000  V.

Photos can be found on DocuShare

 

 

Entry  Monday, November 25, 2013, 11:48, Travis Cave, South Hot-Cell, Standard Operation, TM3, no target, module move 

TM#3 with no target has been moved from the north east silo to the south hot cell.

Entry  Wednesday, November 27, 2013, 12:50, Bevan Moss, South Hot-Cell, Standard Operation, TM3, , Ground devices wiring check 

 Travis and I completed an electrical check on the wiring harness for the devices on the ground plane. All lines passed 500V with the megger except for PNG and the BTM steerer. Those devices had a short to ground. of ~1.4ohm.

ELOG V2.9.2-2455