Started refurb of TM3.

Planned activities:

Inspection

Water line blank off

Started 1:00pm

• Video inspection before containment box removed - noticed discoloration on top right (if looking from h/c window) 4" insulator
• Containment box cover removed
• Containment box removed

As I am much older, wiser and handsomer then last time I removed this style of box, I realised there was a better, safer procedure for the removal...I will be updating the doc. accordingly.

End 2:25 pm

Here are the pictures from today...there is video too but it is not uploaded yet.

On Friday, June 22 the following work was carried out.

• Further inspection of the source tray.
• Testing of existing tray removal and installation tool...it works fine, there was just a specific method for proper coupling to the target module. There was no documentation for this tool, so it took a little bit of insight with the drawings and a little trial and error. A document should be written for this tool so its proper use is documented...I will do this.
• Blank-offs installed on heat shield water lines.
• New gaskets installed on window water lines.
• Containment box re-installed.

Pictures can be found at: http://documents.triumf.ca/docushare/dsweb/View/Collection-8639

TM4 was successfully moved from the South Hot Cell to the South-West Silo remotely by Grant Minor, with help from David Wang and Don Jackson.  The move was without problems.  See ISAC Work Permit 2012-12-04-1.

 Both Turbo pumps on TM3 have failed. They were both attempted to start in soft mode. TP2 could only achieve ~19kpm and TP1 ~10kpm. I have turned off the scroll pump and vented through the turbo pumps.

 Turbo Pump 2 has been replaced on TM3. I got a count of 350 on the sleeve of my tank suit.

 Turbo Pump 2 has been replaced on TM3. I got a count of 350 on the sleeve of my tank suit.

With the Turbo pump replaced I have started roughing at 10:48

 Both Turbo Pumps are now operational.

Bevan Moss wrote:

Both Turbo Pumps are now operational.

 Turbo pumps 1 and 2 both found randomly off, have been restarted

 Cooling Package was started at 9:25 this morning inlet conductivity is 0.08 Mohm at 22.9C. Resistance reached 5.33 Mohm by 11:30

 The flow meter on the primary side (TCS:DIF2) of the conditioning station is broken. I investigated and there is flow, the gauge is not fouled, and the PLC does read back when current supplied. The gauge is also reciving 24V but the output is 0V and 0mA. I will contact ESC and the supplier.

 A HV test was conducted yesterday on TM3. There was no target and all items were tied to common or ground. The conductivity of the water ranged from 7.1 to 7.5 Mohm. 40kV @ ~600uA without continuous sparking was achieved. The Strip tool was run but something went wrong with the export and the vacuum gauge data is missing. I have attached the file for reference and the pulled data from the achiver (only logs every 300 seconds). RGA scans were taken periodically during the test nothing unexpected was measured but we also do not know what normal looks like. The RGA application is available at http://www.thinksrs.com/downloads/soft.htm. Other items of note include significant sparks disrupts the communication between the computer and the RGA, the PNG1 gauge and its controller, and TP2 local readout screen. 

This morning the Einzel Lens was tested on TM3 as the intention is to reuse this piece of equipment. The EL was able to achieve 39.9kV at ~1.35mA before a major spark happened and the power supply turned off. Also during testing the penning gauge suddenly shot up after a spark, it did not recover and had been acting strange in previous test, it was decided to ignore its value and continue testing but it should be replaced in the future. When I went to save the strip tool data I tried to save it as SDDS binary data out of curiosity and the tool crashed, it turns out this is on old feature and doesn't work anymore. A file was created but I cannot recover any of the data. If I do manage to do so I will will attach it later. Attached is the RGA and Archiver data. 

Other items of note:

Voltage was increased in 1000V increments until ~32kV when it started to have sparks. Increases were then reduced to 500V until 38kV when it sparked and further reduced to 100V increments where it worked until 39.9kV

There is a inline and ballast resistor on the EL circuit values of each respectively are 145Kohm and 200 Mohm

The rga application is available at
http://www.thinksrs.com/downloads/soft.htm

 Further HV testing was completed today from ~2:00 until 3:00. The resistivity of the water was 11.7 - 12.7 Mohm. The EE was turned on to 1500 V and had a leakage current of 1.465 mA with a inline and ballast resister of 20 kohm and 1 Mohm respectively. In addition to this all of the CB were turned on to 500V. The voltage on the source tray with all bias items tied together and the voltage was then raised to 30kV in 5kV steps. It was then raised until 37kV in 1kV step at which point the first spark was detected. Steps were then reduced to 500V until 39.5kV was achieved. Sparking was noticed when stepping up from one voltage to the next and steps were reduced to 100V. At 39.7 kV there were several sparks and the voltage was held for 8 minutes until there had been at least 4 minutes since the last spark. Voltage was increased to 41.2 kV at 292.97 uA when a spark caused the HVCLTBHT paddle wheel flow sensor to trip. Flow was affected but the interlock was tripped due to noise and as a result the BIAS and EE voltage dropped to zero. At this point the required data had been collected and it was decided to shut the station down. RGA scans were taken during the test and are attached. The edited data with graphs is attached in the excel folder. PNG1 was not monitored as it has failed.

The rga application is available at
http://www.thinksrs.com/downloads/soft.htm

 Both the Cooling Package and Vacuum have been turned off in preparation for the module move tomorrow

 During Testing it was noticed that Fault 2 was indicated and one of the compressors would not run. Fault 2 does not indicate what the issue was and during inspection nothing could be detected. It had something to do with TCS:CHILCP3 and possibly CP2. CP1 could still be operated and was controlled manually to keep the temperature in the correct range. This was not required but it does affect the conductivity. The main power switch on the chiller unit was turned on and off and the fault was cleared. As far as I know this indicated either a freeze protect, flow, or refrigerant pressure fault. I will ask for TCS:TS6 and TCS:DIF2 to be added to the archiver so this can be further investigated in the future.

Bevan Moss wrote:

This morning the Einzel Lens was tested on TM3 as the intention is to reuse this piece of equipment. The EL was able to achieve 39.9kV at ~1.35mA before a major spark happened and the power supply turned off. Also during testing the penning gauge suddenly shot up after a spark, it did not recover and had been acting strange in previous test, it was decided to ignore its value and continue testing but it should be replaced in the future. When I went to save the strip tool data I tried to save it as SDDS binary data out of curiosity and the tool crashed, it turns out this is on old feature and doesn't work anymore. A file was created but I cannot recover any of the data. If I do manage to do so I will will attach it later. Attached is the RGA and Archiver data.  Other items of note: Voltage was increased in 1000V increments until ~32kV when it started to have sparks. Increases were then reduced to 500V until 38kV when it sparked and further reduced to 100V increments where it worked until 39.9kV There is a inline and ballast resistor on the EL circuit values of each respectively are 145Kohm and 200 Mohm   The rga application is available at http://www.thinksrs.com/downloads/soft.htm

 The lost Binary file. Binary files are no longer used and cause the the tool to crash. The option has not been removed from the strip tool users are just supposed to know not to use it.

Bevan Moss wrote:

A HV test was conducted yesterday on TM3. There was no target and all items were tied to common or ground. The conductivity of the water ranged from 7.1 to 7.5 Mohm. 40kV @ ~600uA without continuous sparking was achieved. The Strip tool was run but something went wrong with the export and the vacuum gauge data is missing. I have attached the file for reference and the pulled data from the achiver (only logs every 300 seconds). RGA scans were taken periodically during the test nothing unexpected was measured but we also do not know what normal looks like. The RGA application is available at http://www.thinksrs.com/downloads/soft.htm. Other items of note include significant sparks disrupts the communication between the computer and the RGA, the PNG1 gauge and its controller, and TP2 local readout screen.

 Data has been put into and excel spread sheet

 Today Chad entered the south hot cell on work permit 2013-08-29-3 to repair the leaking heat shield line. The heat shield line was removed from the module and the surfaces cleaned. New C seals and spring were inserted and the line re-attached. During this time Chad also installed the new vacuum gauge. Grant took video of this work and Keith some pictures. The video and pictures can be found on the M: drive (groups) in the RH folder. The total time taken was ~ 25 minutes. The line was then pumped on and the block was sprayed with helium. The pressure and leak rate started at 0.0 x 10^-4 Torr and 4.0 x 10^-8 atm*cc/Sec. When the helium tank was opened there was an immediate response with the leak rate climbing to 2.7 x 10^-7 atm*cc/Sec. It then stabilized at 2.0 x 10^-7 atm*cc/Sec and was sprayed with helium. Response time was ~2 seconds the leak rate climbed to ~2.3 x 10^-5 atm*cc/Sec the pressure also increased to ~3.0 x 10^-3. The leak detector cart was left attached for another 1.5 hours but still was not able to stabilize in the 10^-9atm*cc/Sec range.