The TCS is venting now. The TM3 blue insulator replacement job will be started soon.

TM#3 is now back in the the north east silo.

TM#3 has been moved from the NE Silo to the conditioning station.

All TM3 blue insulators except Gas,EL, and 60 KV common  on top of the module have been replaced with new designed insulators. The new blue insulator for gas line need to be modified to fit for the bent on the gas  line.   EL, and 60KV common blue insulators were replaced during last time TM3 refurbishment so they are relative new, and  not replaced this time. All seals related to the blue insulators are changed to new seals. The o- r-ing surfaces  for o-ring 221 inside the  new insulators  are rougher than old parts. The module top need to be leak checked.

start of roughing now.

 start of TCS and TM3 turbo-pumps. Everything is good so far.

After blue insulators replacement, TM3 service cap are leak checked. LD base leak rate 0.0xe-9 atm.cc/sec. I sprayed lots helium on all blue insulator seals. No leak has been found. Double checked them again, and got same result. All other seals on top of TM3 also have been checked. They are leak free. OVEN, TUBE, MSP, COIL, and EE water lines are pressurized with 70 psi helium for 3minutes each. They are good also.

Tuesday, September 12, 2016, 10:00: RGA on

Tuesday, September 13, 2016, 13:52: Source on

Tuesday, September 13, 2016, 13:55: BIAS / EL at 10 / 5 kV

Tuesday, September 13, 2016, 13:59: BIAS / EL at 18 / 9 kV

Tuesday, September 13, 2016, 14:06: BIAS / EL at 20 / 10 kV. Minor sparking

Tuesday, September 13, 2016, 14:25: Sparking at about 1 spark/min for the last 10 min

Tuesday, September 13, 2016, 15:38: ~10 sparks for the last 60 min.

Tuesday, September 13, 2016, 15:41: BIAS / EL 22 / 11 kV

Tuesday, September 13, 2016, 15:57: Heavy sparking at 24 kV. Lowered to 21 kV. EL at 12.5 kV

Tuesday, September 13, 2016, 16:00: BIAS / EL at 22 / 12.5 kV

Tuesday, September 13, 2016, 16:05: Trip on resistivity caused by spark

Tuesday, September 13, 2016, 16:07: BIAS / EL at 10 / 5 kV

Tuesday, September 13, 2016, 16:14: BIAS / EL at 20 / 10 kV

Tuesday, September 13, 2016, 16:25: BIAS / EL at 22 / 11 kV

Tuesday, September 13, 2016, 17:00: Sparking at about 1 spark/min for the last 30 min

Tuesday, September 13, 2016, 17:02: Source off.

Wednesday, September 14, 2016, 08:22: BIAS / EL at 20 / 10 kV

Wednesday, September 14, 2016, 08:33: BIAS / EL at 22 / 11 kV

Wednesday, September 14, 2016, 08:35: Trip on resistivity caused by spark

Wednesday, September 14, 2016, 08:38: BIAS / EL at 20 / 10 kV

Wednesday, September 14, 2016, 08:41: BIAS / EL at 21.5 / 11 kV

Wednesday, September 14, 2016, 08:45: BIAS / EL at 22 / 11 kV

Wednesday, September 14, 2016, 09:06: Sparking at about 1 spark/min for the last 20 min

Wednesday, September 14, 2016, 10:17: Sparking rate somewhat reduced. BIAS / EL at 23 / 11 kV

Wednesday, September 14, 2016, 10:23: BIAS / EL at 24 / 12 kV

Wednesday, September 14, 2016, 10:31: BIAS / EL at 25 / 12 kV.

Wednesday, September 14, 2016, 10:32: Trip on resistivity caused by spark

Wednesday, September 14, 2016, 10:36: BIAS / EL at 20 / 10 kV

Wednesday, September 14, 2016, 10:40: BIAS / EL at 23 / 12 kV

Wednesday, September 14, 2016, 10:51: BIAS / EL at 24 / 12 kV

Wednesday, September 14, 2016, 10:57: BIAS / EL at 25 / 12 kV

Wednesday, September 14, 2016, 11:01: Heavy sparking at 25 kV (>15 /min). Trip on resistivity caused by spark

Wednesday, September 14, 2016, 11:10: RGA off.

 TM3 is disconnected at TCS and ready to be moved to silo.

TM#3, no target, has been moved from the conditioning station to the north east silo.

All water circuits are by passed on the top of TM3. Water pumps and vacuum turbo- pumps are started. Everything is ready for TM3 camera sparking check.

David Wang wrote:

All water circuits are by passed on the top of TM3. Water pumps and vacuum turbo- pumps are started. Everything is ready for TM3 camera sparking check.

 Wednesday November 30st: <br>

- 3 cameras (1 UV and 2 regular cameras)  were installed in the Service cap and the module was pumped down.  1 UV and 1 regular were placed on the East side of the module, aiming to water lines entering the Service Tray; 1 regular camera was placed on the South side of the module, aiming at the bottom of the blue insulators.

- started pumping down. <br>

Thursday, December 1st: <br>

- 1st HV test done. TM3 started sparking above 20kV. The cameras responses were consistent with the sparks. However, the screens were flickering and it was not clear if the responses were due to electromagnetic interferences; or due to cameras' gain change caused by high intensity light due to sparking.<br>

- added helium using the regulating valve. same results were found; <br>

Friday, December 2nd: <br>

- vented the module. <br>

- shielded the cameras' cables with aluminum tape. <br>

- removed 2 blue insulator (EE and HS) and shortened them by 1". They were found too long: HS blue insulator touching the horizontal HV water line; and the EE blue insulator at 2-3mm far from the HV water line; re-installed both shortened blue insulators.<br>

- changes the location of the cameras: 1 regular camera taped to the UV camera were placed South, aiming at the bottom of the blue insulators; 1 regular camera was kept on the East side of the module, also aiming at the bottom of the blue insulators. <br>

- started pumping down. <br>

Saturday, December 3rd: <br>

- 2nd HV test was done, with cameras' installed as mentioned above. results were consistent with the first test results. <br>

- added helium. results were the same. <br>

- vented and changed the location of the cameras: 1 regular camera taped to the UV camera were placed at the top of the Service Tray (South-West corner) aiming down the Service Tray; 1 regular camera was kept (its setup was not touched at all) on the East side of the module, aiming at the bottom of the blue insulators. <br>

- attempted to pump down, but the module was leaking. reopened the flanges, cleaned them, attempted again to pump down, but it showed a bigger leak. <br>

Sunday, December 4th: <br>

- the third attempt to pump down was successful (without reopening the module!). <br>

Monday, December 5th: <br>

- did the 3rd HV test with the cameras installed as described on December 3rd. same results as before were seen. <br>

- again helium was added and same results were noticed. <br>

- stopped pumps and prepared for venting to relocate the cameras lower in the Service Tray.

Aurelia Laxdal wrote:

David Wang wrote: All water circuits are by passed on the top of TM3. Water pumps and vacuum turbo- pumps are started. Everything is ready for TM3 camera sparking check.  Wednesday November 30st: <br> - 3 cameras (1 UV and 2 regular cameras)  were installed in the Service cap and the module was pumped down.  1 UV and 1 regular were placed on the East side of the module, aiming to water lines entering the Service Tray; 1 regular camera was placed on the South side of the module, aiming at the bottom of the blue insulators. - started pumping down. <br> Thursday, December 1st: <br> - 1st HV test done. TM3 started sparking above 20kV. The cameras responses were consistent with the sparks. However, the screens were flickering and it was not clear if the responses were due to electromagnetic interferences; or due to cameras' gain change caused by high intensity light due to sparking.<br> - added helium using the regulating valve. same results were found; <br> Friday, December 2nd: <br> - vented the module. <br> - shielded the cameras' cables with aluminum tape. <br> - removed 2 blue insulator (EE and HS) and shortened them by 1". They were found too long: HS blue insulator touching the horizontal HV water line; and the EE blue insulator at 2-3mm far from the HV water line; re-installed both shortened blue insulators.<br> - changes the location of the cameras: 1 regular camera taped to the UV camera were placed South, aiming at the bottom of the blue insulators; 1 regular camera was kept on the East side of the module, also aiming at the bottom of the blue insulators. <br> - started pumping down. <br> Saturday, December 3rd: <br> - 2nd HV test was done, with cameras' installed as mentioned above. results were consistent with the first test results. <br> - added helium. results were the same. <br> - vented and changed the location of the cameras: 1 regular camera taped to the UV camera were placed at the top of the Service Tray (South-West corner) aiming down the Service Tray; 1 regular camera was kept (its setup was not touched at all) on the East side of the module, aiming at the bottom of the blue insulators. <br> - attempted to pump down, but the module was leaking. reopened the flanges, cleaned them, attempted again to pump down, but it showed a bigger leak. <br> Sunday, December 4th: <br> - the third attempt to pump down was successful (without reopening the module!). <br> Monday, December 5th: <br> - did the 3rd HV test with the cameras installed as described on December 3rd. same results as before were seen. <br> - again helium was added and same results were noticed. <br> - stopped pumps and prepared for venting to relocate the cameras lower in the Service Tray.

 Monday, December 5th (Con't): <br>

- vented and changed the location of the cameras;<br>

- the UV camera was placed (tapped on an aluminum spacer and on the grounded water lines) at the middle of the Service Tray (right below the first Mykroy insulator-plate) aiming down the Service Tray (at the second Mykroy insulator-plate and water lines) ; <br>

- 1 regular camera was placed right below the UV camera, also using a spacer (taped with the camera on grounded water lines) and also aiming down the Service Tray (at the second Mykroy insulator-plate and water lines);  The spacer for this camera had 300counts on it after it was removed from TM3, after the test;<br>

- NOTE: when installing the 1st regular camera: dropped a small allen key in the Service Tray. It landed on last insulator with the epoxi and water lines, between the first HV line and the wall of the grounded Service Tray.  This insulator is down below in the Service tray. Used a magnet stick to recuperate the allen key. <br>

- the 2nd regular camera was placed at the top of the Service Tray (tapped on the grounded water lines) looking down at the first Mykroy insulator-plate and water lines. NOTE: this camera had a filter applied to its lens. <br>

- pumped down <br>

Tuesday, December 6th:<br>

- did the 4th HV test with the cameras installed as described on December 5rd Tuesday morning very early . Same results as before were seen, except that the top camera (2nd regular camera) with the filter applied to its lens was flickering less than the other 2 cameras, and for small sparks this camera was not reacting at all. <br>

- vented shortly after the 4th test and relocated the cameras for the 5th HV test (last test); <br>

- placed only 2 regular cameras in the Service Tray;<br>

- 1 regular camera was placed right below the 2nd Mykroy insulator-plate, aiming down the Service Tray at the last insulator with the epoxi and water lines (this insulator is down below in the Service tray); <br>

- the 1st regular camera was placed a level up in the Service Tray, right below the 1st Mykroy insulator-plate, aiming down the Service Tray at the 2nd Mykroy insulator-plate; <br>

- NOTE: no spacers were used<br>

- pumped down and did the 5th HV test with the cameras installed as described above in the evening; <br>

- again same results as before were seen: the camera with the filter applied to its lens was flickering less than the other camera, and for small sparks this camera was not reacting at all. <br>

- NOTE: for this last test heard sparks outside (at atmosphere) when the HV was pushed at 26kV; <br>

Wednesday, December 7th:<br>

- vented and removed the cameras from TM3. No contamination was found on the cameras and wires. <br>

- TM3 was moved to the silo.<br>

 TM#3 is now in the south hot cell.

 We have a ram installed on SHC pole which is 0.5 meter to  module shielding block surface. the readings we got today during TM3 move:
at containment box center (highest reading): 3.14 msv/hr.
at bottom  of shielding blocks: 960 usv/hr.
at 1/4  of  shielding blocks height from  bottom :700usv/hr.
at 1/2 of shielding blocks height from bottom: 340usv/hr.
at 3/4 of shielding blocks height from bottom:140u/sv/hr.
   The Ram is behind the pole and measured the surface which is 90 degree right side of that opened service tray side. 

Electrical check of TM#3 with no target at the south hot cell

Found spark signs on TM3's containment on the side of the water blocks. They may be OLD or/and NEW sparking signs, but this in not determined at this moment. Please see picture: first attachment. First and second attachment show the profiles of water block and HV lines.

A video inspection of the lower service tray was performed this morning. Camera was inserted upwards into the service tray/service chase from the containment box. One potential spark mark was identified as well as epoxy not flush with insulator. Fiberglass does not extend into service tray/chase much and does not look, from initial inspection that it will be too difficult to remove.

Video can be found in docushare Document-142295

containment box was re-installed onto TM3 on Monday, Left manipulator may be showing signs of eminent handle or tong cable failure.

 TM#3 has been moved from the north east silo to the south hot cell.

the containment box has been removed from TM3.