 Monday, May 06, 2013, 15:45, Bevan Moss, Conditioning Station, Repair, TM3, , 55 pin connector removed 
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Travis and I removed the 55 pin connector from the service cap today. The feed through was left in place as a new design for the replacement has yet
to be designed. It was not possible to test if the cables could be pulled easily as I believe there is still 1 cable tie in the containment box. The wires
were cut flush with the top of the copper tube in case Chad cannot remove them via the hot cell. Other items removed include several cable ties and a clamp |
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Friday, May 10, 2013, 11:28, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, Roughing Started
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| Roughing on TM3 was started at 11:26am today |
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Friday, May 10, 2013, 14:05, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, Turbo Pumps On
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| The turbo pumps are on. TP1 and TP2 once again timed out and had to be restarted before they would stay on. |
 Monday, May 13, 2013, 14:59, Bevan Moss, Conditioning Station, Standard Operation, TM3, N/A, EL testing
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Bevan Moss wrote:
This morning the Einzel Lens was tested on TM3 as the intention is to reuse this piece of equipment. |
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Monday, May 13, 2013, 15:10, Bevan Moss, Conditioning Station, Standard Operation, TM3, N/A, HV Test All common
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Bevan Moss wrote:
A HV test was conducted yesterday on TM3. There was no target and all items were tied to common |
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Wednesday, May 15, 2013, 10:17, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, Preliminary Results from HV testing
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Testing on TM3 without a source tray was completed on 13/05.2013. All items were tied to common and the water blocks were left open at the bottom
of the module. They were left with the quick connections at the top. The vacuum was in the low 10^-6T range so this was deemed acceptable. The cooling
lines withing the cage in the target hall were shorted so flow could continue. As you will see from the results a maximum of 44kV was achieved before a |
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Wednesday, May 15, 2013, 10:20, Bevan Moss, Conditioning Station, Repair, , , Roof top chiller failed
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I have been getting a fault on the roof top chiller for the 2 tandem 7.5 ton chillers. I have checked and we have water flow and the temperatures are
nowhere near freezing. I believe they are over heating as the fans on that side are not coming on. The blades are free to turn by hand but the VFD controller
keeps saying off. I have tried turning it on and off and that also did nothing. I have contacted ESC for further advice. |
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Wednesday, May 15, 2013, 10:25, Bevan Moss, Conditioning Station, Repair, , , ONICON flow meter
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Scott Adair from Riada sales came to site to complete diagnostics on the ONICON flow meter. He could not determine the problem and believes that
there was a short in the head. He has taken the flow meter for what should be warranty repair. The flow meter is for diagnostics only, the conditioning
station can still operate without it. |
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Wednesday, May 15, 2013, 16:21, Bevan Moss, Conditioning Station, Repair, , , BIAS Current readings off by a factor of 5
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A special thanks to Kazuya, Jane and Ray who jumped on this issue right away! The limit of the BIAS PS was set as 20000uA when in reality it is
4000uA. The issue has now been corrected. Please remember to divide the current by 5 for any elogs older than this one. |
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Wednesday, May 15, 2013, 16:51, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, Repeat of HV Test
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The HV test completed on Monday was repeated today over a much longer time period. By taking longer there was slightly less sparking but once again
a maximum voltage of ~44kV was achieved. The resistivity of the water was much higher during this run so the leakage current was less but still in
the >100 uA range. The spark that occurred during the ramp up to the maximum voltage caused the "water resistivity" limit to trip. This was |
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Wednesday, May 15, 2013, 17:32, Bevan Moss, Conditioning Station, Standard Operation, TM3, , TM3 in place but not connected
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To confirm that the sparking was coming from the module rather than the conditioning station TM3 was grounded and the conditioning station biased.
Attached are the results. Highlights include that there was no sparking and the station was able to achieve 60kV (limited by controls from going higher).
The current from the raw file has been corrected by the required factor of 5. |
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Wednesday, May 15, 2013, 18:12, Bevan Moss, Conditioning Station, Standard Operation, TM3, No source tray, HV test repeat
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After discussion with Friedhelm it was decided to continue trying to condition the module today before moving it tomorrow. The voltage was quickly
raised until 40 kV where it was left for ~30 minutes. Sparking was minimal. It was then slowly raised to 44.3 kV it held this voltage for ~8 minutes when
the current started to climb (remained below 200uA as set as a limit in previous tesing). There was also sparking at this point. This continued for ~2.5 |
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Tuesday, May 21, 2013, 11:52, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, May 16th Long HV conditioning
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On May 16th 2013 the module was HV conditioned all day. As a result the maximum stable voltage has been increased to about 47kV (~4kV more than last
test). A maximum voltage of 49kV was achieved but the module was very unstable. Attached is the data from the testing. Note that occasionally the sparking
caused the PS to reset, it was turned back on and the voltage increased back to what it was (or lower) quickly. |
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Thursday, May 23, 2013, 14:07, Bevan Moss, Conditioning Station, Repair, , , Chiller Unit Repaired
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ESC came today and "repaired" the chiller. There was something wrong with the VFD controller. The were able to get it to start and run
correctly again but were not able to recreate the problem. At this point it appears that it has magically disappeared. |
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Thursday, May 23, 2013, 14:08, Bevan Moss, Conditioning Station, Standard Operation, TM4, Ta #40, Turbo Pumps on
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| The turbo pumps have been turned on and are running |
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Thursday, May 23, 2013, 14:12, Bevan Moss, Conditioning Station, Maintenance, , , Primary Circuit Drained and Flushed
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Rob Walker has drained the primary side of the conditioning station. It will be flushed, filled and chemically treated. It was desired to
chemically treat the primary side before before but it took so long that sediment was found (things started to grow). |
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Monday, May 27, 2013, 10:35, Bevan Moss, Conditioning Station, Standard Operation, TM4, Ta #40, Pumps Started HV testing to follow
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| The pumps have been turned on at ~9:30 this morning. Current values are 6.61 Mohm TCS:DIC1 @19.4 C. HV testing will start momentarily. |
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Monday, May 27, 2013, 10:37, Bevan Moss, Conditioning Station, Maintenance, TM4, , Cooling Systems topped off
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Rob walker has flushed and refilled the primary side of the system (note the water still looks nasty). This morning the primary side of system needed
to be bled as there were air pockets. Also TK2 had reached its low point and needed to be topped up. |
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Monday, May 27, 2013, 15:59, Bevan Moss, Conditioning Station, Repair, , , Compressor fault
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Once again the 7.5 compressors are tripping due to faults. I believe it is due to over pressure as a result of the chiller fans not coming on.
I have contacted ESC. |
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Monday, May 27, 2013, 16:01, Bevan Moss, Conditioning Station, Repair, , , CanBUS card
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During HV conditioning of TM4 with Ta#40 there was a spark at ~43 kV that caused the Bias card to "fry". Dave Morris has been contacted
and has said he will replace it tomorrow. |
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