 Monday, June 25, 2018, 11:31, chad fisher, South Hot-Cell, Standard Operation, , , Fields at Al cover
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| The shield door has been opened and fields measured at 77 uSv/h on contact at the AL. panel. |
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Monday, June 25, 2018, 16:42, Anders Mjos, Conditioning Station, Development, , , Testing new high current connectors
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Shorted TGHT with new high current connector assembly and heated to 600 A. Temperature measured on half way point on cable ~ 70 deg C and on connector
~60 deg C at 600 A, 45 / 40 deg C at 400 A. Target Hall locked out during test |
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Tuesday, June 26, 2018, 08:56, chad fisher, South Hot-Cell, Standard Operation, , , South Hot Cell Fields
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| hot items have been moved and shielded as much as possible. Field at left manipulator has been reduced from 560 uSv/h to 85 uSv/h. |
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Friday, June 29, 2018, 10:12, chad fisher, South Hot-Cell, Maintenance, , , Manipulator Tong Cable Replacement
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Tuesday, June 26 the broken tong cable was replaced on the west manipulator in the south hot cell. Wednesday the tong cable was preemptively replaced
on the east manipulator of the south hot cell. |
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Friday, June 29, 2018, 10:15, chad fisher, South Hot-Cell, Standard Operation, TM2, , TM2 work and target install
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On Thursday, June 29th the containment box of TM2 was removed and the optics tray re-installed and reconnected. The box was then re-installed.
Friday the window waterlines were leak checked, Nb target installed (with new fasteners, high current torqued to 130 in*lbs) target leak and electrical
checked and containment box cover installed with new fasteners. |
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Friday, June 29, 2018, 10:27, chad fisher, South Hot-Cell, Maintenance, , , South Hot Cell Filter Change
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At the end of manipulator repair Thursday the ventilation pre-filter in the hot cell was changed. Old filter remains in the hot cell until such time
as it can be removed. |
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Tuesday, July 03, 2018, 14:38, David Wang, ITW, Standard Operation, , , ITW water signals interlock check.
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| Annual ITW water signals interlock check are done. Everything works good. |
Thursday, July 19, 2018, 09:17, chad fisher, South Hot-Cell, Repair, TM4, , New Optics Tray Modification 
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| The waterline loop bracket has been installed onto the new loop holding bracket and both installed onto the new source tray. |
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Thursday, July 19, 2018, 14:22, Isaac Earle, North Hot-Cell, Development, , , NHC diagnostic signals - connector and wiring details
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Installation of the diagnostic connections between the NHC hot and cold sides has been completed. The cable bundle was prepared by Travis Cave
in the electronics workshop with connectors attached at one end only. Metal fish tape was first ran through the conduit from the cold side to hot
side, the non-terminated end of the cable bundle was attached to the fish tape inside the cell, cable pulling lubricant was applied, then the cable bundle |
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Wednesday, August 01, 2018, 09:47, Isaac Earle, North Hot-Cell, Development, , , NHC diagnostic signals and control panel tested
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On July 30th the NHC diagnostic signals were tested:
- 9 pin CPC: a shorting plug was installed on the hot side - continuity check results were as expected
- 4 pin CPCs: snake camera installed in both hot side connectors with portable monitor on cold side - both connectors worked as expected |
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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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Tuesday, August 07, 2018, 10:44, Travis Cave, South Hot-Cell, Maintenance, , , Entrance module move
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| The west entrance module has been moved from the west target station to the south hot cell, for a bellows replacement. |
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Thursday, August 30, 2018, 07:42, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 has been connected to TCS.
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| TM4 has been connected to TCS. vacuum system and water system are started. Everything looks fine. |
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Thursday, August 30, 2018, 07:46, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 HS line leak check at TCS and SHC.
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Chad and I leak checked TM4 HS line after UCx 24 is installed. No leak at 5xE-9atm.cc/sec. Today, I did helium pressure test on HS line at TCS.
No leak at 70 psi helium 0.0xE-9 atm.cc/sec. |
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Wednesday, September 12, 2018, 15:22, Isaac Earle, North Hot-Cell, Development, , , NHC air and gas supply lines - test and leak check
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Testing was completed today on the NHC air and gas supply lines. For each line a Staubli plug was installed on the fitting inside the hot cell,
the line was charged with compressed air (50psi for gas lines #1, #2, and #3; 100psi for the air lines #4 and #5). All connections inside and
outside the cell were checked for leaks using Snoop including connections for the solenoid valves. No leaks were found. Correct operation of |
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Wednesday, September 12, 2018, 15:30, Isaac Earle, North Hot-Cell, Development, , , Installation of NHC operator-level lighting completed
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Installation of of operator-level lighting in the NHC was completed today according to drawing IRH1801. 2" x 2" Panduit was mounted
to the wall on aluminum brackets to support the power cables. These lights can be replaced remotely by unplugging the power cords using the manipulators,
lifting the cable out of the Panduit with a hooked pole tool through the manipulator slave end removal roof hatch, lifting the light fixture off the support |
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Thursday, September 13, 2018, 16:57, Isaac Earle, North Hot-Cell, Development, , , NHC grounding and mili-ohm testing
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The following equipment has been connected to the building ground located in the Target Hall by the TCS using 1/2"
flat bonding strap:
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Tuesday, September 25, 2018, 07:54, David Wang, Conditioning Station, Repair, TM3, , TM3 is connected for HV test at TCS.
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| water loops are by passed on top. All bias, EE, and EL are tied together. Started water system. |
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Tuesday, September 25, 2018, 08:48, chad fisher, South Hot-Cell, Maintenance, , , Window leak and torque
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The south hot cell window has been found to be leaking oil. Upon inspection yesterday I found that the bolts compressing the gasket on the cold side
were "loose". I have re-torqued them to the specification provided by the manufacturer in the attached procedure. |
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Wednesday, September 26, 2018, 07:14, David Wang, Conditioning Station, Repair, TM3, , TM3 HV test at TCS.
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I did a HV test on TM3 at TCS yesterday. HV Ramp up speed: 1KV per 5 minutes when below 30KV,1KV per 10 minutes from 30-36KV. There is no major spark
below36 KV . I could see lots small and big vacuum response on IG1 and PNG2 when conditioning from 30-36 KV, especially when closing to 36
KV. However, At 36.4 KV, There is a big continuous spark occurred. It could not be stopped until I lowed the HV to 14KV. I have to ramp up from 14 |
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