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  ID Datedown Author Category Type Module Target/Number Subject
  818   Monday, December 08, 2014, 15:22 Anders MjosConditioning StationDevelopmentTM2 Circuit D water test

Monday, December 08, 2014, 14:00: Dan M and Anders connected the water supply to circuit D and installed the module cover.

Monday, December 08, 2014, 14:50: Circulating water on circuit D. IG1 vacuum stable at 3.1E-7 T. No response on mass 18 on RGA

Monday, December 08, 2014, 15:30: Test TGHT and TBHT PS. Can be switched on, but set points need to be corrected.

Monday, December 08, 2014, 16:11: Started CHILLCP2

Monday, December 08, 2014, 16:26: Stopped CHILLCP2


Tuesday, December 09, 2014, 09:02: Started CHILLCP1. TS5 at 31.5 C

Tuesday, December 09, 2014, 09:33: Stopped CHILLCP1. TS5 at 17. 1 C

Tuesday, December 09, 2014, 14:54: Tested TGHT to 600 A and 2.05 V (local read back). EPICS read back and set point is not correct. Circuit resistance ~ 3.4 mOhm.

Tuesday, December 09, 2014, 15:14: Tested TBHT to 272 A and 0.97 V (local read back). EPICS read back and set point is not correct. Circuit resistance ~ 3.6 mOhm.

Tuesday, December 09, 2014, 16:01: TGHT and TBHT switched off.


Wednesday, December 10, 2014, 08:30: TGHT and TBHT power supplies cannot be run with TS5 > 25. Bypasses/Forces not implemented. Waiting for controls.

Wednesday, December 10, 2014, 10:44: Water is stable on RGA, however N, O and Ar shows repeated short term spikes of ~4x magnitude. Spikes are also visible on IG1


Vacuum stable over night.

Thursday, December 11, 2014, 08:22: Starting CHILLCP3. TS5 at 33.1 C, TBHT at 30.2 C

Thursday, December 11, 2014, 08:58 : Staging enabled


Vacuum stable over night.

Dave M corrected scale of TGHT and TBHT.

TS5 forced


 

Lost water in expansion tank over the weekend. See other e-log entries regarding the water leak and fix. Vacuum stable over the weekend.

Monday, December 15, 2014, 13:49: TGHT and TBHT PS at 600 A and 270 A

Monday, December 15, 2014, 14:06: TGHT to 700 A

Monday, December 15, 2014, 18:03: Autoramping down at 5 A/15 s

Monday, December 15, 2014, 18:26: TGHT and TBHT at 0 A. TS5 is at 35 C


Vacuum stable over night

Tuesday, December 16, 2014, 08:07: TGHT and TBHT to 700 A and 270 A

Tuesday, December 16, 2014, 09:00: Stopped MP2. MP3 tripped. TGHT and TBHT tripped.

Tuesday, December 16, 2014, 09:05: started MP2, TGHT and TBHT

Tuesday, December 16, 2014, 16:21: TGHT to 600 A. Will leave both TGHT and TBHT on over night to keep the water warm.


Vacuum stable over night. TS5 at 37.5 C TBHT return at 34.5 C

Wednesday, December 17, 2014, 08:15: TGHT to 750 A

Wednesday, December 17, 2014, 08:35 : TGHT to 800 A

Wednesday, December 17, 2014, 16:09 : TGHT to 700 A. TS5 at 40 C TBHT return at 37 C


Vacuum stable over night. TS5 at 39.3 C and TBHT return at 36.2 C

Thursday, December 18, 2014, 07:54: Starting CHILLCP1

Thursday, December 18, 2014, 08:34: Stopped cHILLCP1 TS5 at 20 C

Thursday, December 18, 2014, 09:07: TGHT to 800 A

Thursday, December 18, 2014, 16:10: TGHT to 700 A


Vacuum stable over night. TS5 at 39.0 C and TBHT return at 35.9 C

Friday, December 19, 2014, 08:17: TGHT to 800 A

Friday, December 19, 2014, 11:54: TGHT to 650 A. TS5 at 39.9 C 


Vacuum stable over the weekend. TS5 at 38.4 C and TBHT return at 35.4 C

Monday, December 22, 2014, 08:31 : Started CHILLCP3

Monday, December 22, 2014, 09:30: Stopped CHILLCP3 

Monday, December 22, 2014, 10:08: TGHT to 800 A

Monday, December 22, 2014, 16:25: TGHT to 700 A


Vacuum stable over night. TS5 at 38.4 C and TBHT return at 35.3 C

Tuesday, December 23, 2014, 08:16: TGHT to 800 A

Tuesday, December 23, 2014, 13:10 : Starting CHILLCP3. TS5 at 39.5 C and TBHT return at 36.4 C

Tuesday, December 23, 2014, 13:14: TGHT and TBHt to 0 and off. 

Leak check found no leaks on Service Cap

Tuesday, December 23, 2014, 14:14 : Stopped CHILLCP3

Tuesday, December 23, 2014, 14:20: RGA filament off

Tuesday, December 23, 2014, 14:23: Stopped MP2 and MP3

Attachment 1: TCS_Heater_Transmission_Power.xlsx
Attachment 2: Circuit_D_test_results_for_TM2_status_meeting_2014-12-11.pdf
Circuit_D_test_results_for_TM2_status_meeting_2014-12-11.pdf Circuit_D_test_results_for_TM2_status_meeting_2014-12-11.pdf Circuit_D_test_results_for_TM2_status_meeting_2014-12-11.pdf Circuit_D_test_results_for_TM2_status_meeting_2014-12-11.pdf
Attachment 3: Heated_water_leak_test_plan.pdf
Heated_water_leak_test_plan.pdf
Attachment 4: Heated_water_leak_test_Circuit_D_RESULTS.docx
  817   Monday, December 08, 2014, 13:52 Anders MjosConditioning StationDevelopmentTM2 Fixed - Not able to start water system

Anders Mjos wrote:

 TCS:WPV1 does not open when staging is enabled. Multiple attempts have been made, but the valve remains closed.

 Dave Morris looked at the PLC controls and found that the code was not writing to the output after the PLC migration. He corrected it.

  816   Friday, December 05, 2014, 15:41 Anders MjosConditioning StationDevelopmentTM2 RGA results

Measurement taken at 14:25. IG2 at ~7.7E-6 T

Attachment 1: 2014-12-05-14-25_TM2.png
2014-12-05-14-25_TM2.png
Attachment 2: 2014-12-05-14-25_TM2.txt
Dec 05, 2014  02:24:20 PM
Residual Gas Analyzer Software 
Software Version, 3.213.008

Analog Scan Setup:

Data Points in Scan, 991 
Units, Torr 
Noise Floor, 2 
CEM Status, OFF 
Points Per AMU, 10
Scan Start Mass, 1, amu 
Scan Stop Mass, 100, amu
Focus Voltage, 90, Volts 
Ion Energy, HIGH 
Electron Energy, 70, eV 
CEM Voltage, 1090, Volts
CEM Gain, 1.05E+003 
Sensitivity Factor, 1.01E-004 
Filament Current, 1.00, mAmps


  1.00,  -2.37E-009, 
  1.10,  -1.01E-009, 
  1.20,   2.41E-007, 
  1.30,   4.15E-007, 
  1.40,   5.81E-008, 
  1.50,   7.25E-008, 
  1.60,   2.27E-007, 
  1.70,   3.21E-007, 
  1.80,   4.11E-007, 
  1.90,   4.28E-007, 
  2.00,   4.25E-007, 
  2.10,   3.71E-007, 
  2.20,   2.93E-007, 
  2.30,   1.50E-007, 
  2.40,   3.59E-008, 
  2.50,   1.46E-008, 
  2.60,   7.89E-009, 
  2.70,   4.71E-009, 
  2.80,   3.12E-009, 
  2.90,   2.24E-009, 
  3.00,   1.52E-009, 
  3.10,   1.05E-009, 
  3.20,   7.24E-010, 
  3.30,   3.94E-010, 
  3.40,   1.21E-010, 
  3.50,   4.73E-011, 
  3.60,  -2.66E-011, 
  3.70,  -6.41E-011, 
  3.80,  -9.17E-011, 
  3.90,  -1.38E-010, 
  4.00,  -7.59E-011, 
  4.10,  -1.99E-010, 
  4.20,  -3.21E-010, 
  4.30,  -2.91E-010, 
  4.40,  -2.63E-010, 
  4.50,  -1.71E-010, 
  4.60,  -5.52E-011, 
  4.70,  -1.60E-010, 
  4.80,  -1.99E-010, 
  4.90,  -2.35E-010, 
  5.00,  -3.20E-010, 
  5.10,  -3.59E-010, 
  5.20,  -2.73E-010, 
  5.30,  -2.03E-010, 
  5.40,  -2.98E-010, 
  5.50,  -2.75E-010, 
  5.60,  -3.27E-010, 
  5.70,  -3.40E-010, 
  5.80,  -3.03E-010, 
  5.90,  -2.27E-010, 
  6.00,  -1.93E-010, 
  6.10,  -1.35E-010, 
  6.20,  -1.47E-010, 
  6.30,  -1.82E-010, 
  6.40,  -2.26E-010, 
  6.50,  -2.62E-010, 
  6.60,  -2.38E-010, 
  6.70,  -2.32E-010, 
  6.80,  -1.77E-010, 
  6.90,  -2.01E-010, 
  7.00,  -2.84E-010, 
  7.10,  -3.27E-010, 
  7.20,  -3.82E-010, 
  7.30,  -3.67E-010, 
  7.40,  -2.50E-010, 
  7.50,  -2.17E-010, 
  7.60,  -2.11E-010, 
  7.70,  -1.24E-010, 
  7.80,  -1.13E-010, 
  7.90,  -1.35E-010, 
  8.00,  -9.66E-011, 
  8.10,  -8.97E-011, 
  8.20,  -1.89E-010, 
  8.30,  -1.24E-010, 
  8.40,  -7.79E-011, 
  8.50,  -4.54E-011, 
  8.60,  -3.94E-012, 
  8.70,   3.55E-011, 
  8.80,   3.65E-011, 
  8.90,   1.97E-012, 
  9.00,  -1.97E-011, 
  9.10,  -5.13E-011, 
  9.20,  -1.09E-010, 
  9.30,  -1.65E-010, 
  9.40,  -1.33E-010, 
  9.50,  -2.24E-010, 
  9.60,  -2.07E-010, 
  9.70,  -2.87E-010, 
  9.80,  -3.25E-010, 
  9.90,  -2.29E-010, 
 10.00,  -2.07E-010, 
 10.10,  -1.94E-010, 
 10.20,  -1.84E-010, 
 10.30,  -6.02E-011, 
 10.40,  -7.30E-011, 
 10.50,  -1.63E-010, 
 10.60,  -1.82E-010, 
 10.70,  -1.42E-010, 
 10.80,  -1.07E-010, 
 10.90,   4.04E-011, 
 11.00,   3.25E-011, 
 11.10,  -2.17E-011, 
 11.20,  -2.27E-011, 
 11.30,  -2.76E-011, 
 11.40,  -7.20E-011, 
 11.50,   3.49E-010, 
 11.60,   1.86E-009, 
 11.70,   3.63E-009, 
 11.80,   5.54E-009, 
 11.90,   7.54E-009, 
 12.00,   8.76E-009, 
 12.10,   8.82E-009, 
 12.20,   7.47E-009, 
 12.30,   4.64E-009, 
 12.40,   2.84E-009, 
 12.50,   1.82E-009, 
 12.60,   1.22E-009, 
 12.70,   9.56E-010, 
 12.80,   9.67E-010, 
 12.90,   8.41E-010, 
 13.00,   8.04E-010, 
 13.10,   7.64E-010, 
 13.20,   5.85E-010, 
 13.30,   4.03E-010, 
 13.40,   2.63E-010, 
 13.50,   4.46E-010, 
 13.60,   1.55E-009, 
 13.70,   2.94E-009, 
 13.80,   4.14E-009, 
 13.90,   5.28E-009, 
 14.00,   6.22E-009, 
 14.10,   6.37E-009, 
 14.20,   5.44E-009, 
 14.30,   3.47E-009, 
 14.40,   2.23E-009, 
 14.50,   1.55E-009, 
 14.60,   1.52E-009, 
 14.70,   1.83E-009, 
 14.80,   2.34E-009, 
 14.90,   2.89E-009, 
 15.00,   3.32E-009, 
 15.10,   3.47E-009, 
 15.20,   3.49E-009, 
 15.30,   3.11E-009, 
 15.40,   4.58E-009, 
 15.50,   2.08E-008, 
 15.60,   9.78E-008, 
 15.70,   1.57E-007, 
 15.80,   1.84E-007, 
 15.90,   1.96E-007, 
 16.00,   1.95E-007, 
 16.10,   1.66E-007, 
 16.20,   1.00E-007, 
 16.30,   4.00E-008, 
 16.40,   6.48E-008, 
 16.50,   5.41E-007, 
 16.60,   1.52E-006, 
 16.70,   1.88E-006, 
 16.80,   2.10E-006, 
 16.90,   2.17E-006, 
 17.00,   2.14E-006, 
 17.10,   1.78E-006, 
 17.20,   7.79E-007, 
 17.30,   1.21E-007, 
 17.40,   3.13E-007, 
 17.50,   2.43E-006, 
 17.60,   6.52E-006, 
 17.70,   8.33E-006, 
 17.80,   9.18E-006, 
 17.90,   9.38E-006, 
 18.00,   9.27E-006, 
 18.10,   7.83E-006, 
 18.20,   2.62E-006, 
 18.30,   7.79E-008, 
 18.40,   2.34E-008, 
 18.50,   1.53E-008, 
 18.60,   2.54E-008, 
 18.70,   4.37E-008, 
 18.80,   5.55E-008, 
 18.90,   6.27E-008, 
 19.00,   6.54E-008, 
 19.10,   6.02E-008, 
 19.20,   4.50E-008, 
 19.30,   1.84E-008, 
 19.40,   9.54E-009, 
 19.50,   6.70E-009, 
 19.60,   8.21E-009, 
 19.70,   1.20E-008, 
 19.80,   1.54E-008, 
 19.90,   1.76E-008, 
 20.00,   1.90E-008, 
 20.10,   1.85E-008, 
 20.20,   1.54E-008, 
 20.30,   8.53E-009, 
 20.40,   4.90E-009, 
 20.50,   3.04E-009, 
 20.60,   1.99E-009, 
 20.70,   1.39E-009, 
 20.80,   9.90E-010, 
 20.90,   6.37E-010, 
 21.00,   3.70E-010, 
 21.10,   1.70E-010, 
 21.20,   3.94E-011, 
 21.30,   1.97E-012, 
 21.40,  -9.47E-011, 
 21.50,  -8.97E-011, 
 21.60,   1.74E-010, 
 21.70,   4.18E-010, 
 21.80,   7.38E-010, 
 21.90,   9.14E-010, 
 22.00,   1.04E-009, 
 22.10,   1.03E-009, 
 22.20,   8.56E-010, 
 22.30,   4.96E-010, 
 22.40,   3.30E-010, 
 22.50,   2.78E-010, 
 22.60,   5.33E-011, 
 22.70,   5.82E-011, 
 22.80,   3.45E-011, 
 22.90,  -1.24E-010, 
 23.00,  -2.11E-010, 
 23.10,  -1.58E-010, 
 23.20,  -2.33E-010, 
 23.30,  -1.80E-010, 
 23.40,  -1.07E-010, 
 23.50,  -8.58E-011, 
 23.60,  -2.54E-010, 
 23.70,  -1.68E-010, 
 23.80,  -1.21E-010, 
 23.90,  -7.30E-011, 
 24.00,  -1.06E-010, 
 24.10,  -5.52E-011, 
 24.20,  -1.38E-010, 
 24.30,  -1.40E-010, 
 24.40,  -1.40E-010, 
 24.50,  -1.32E-010, 
 24.60,  -1.60E-010, 
 24.70,  -1.32E-010, 
 24.80,  -2.17E-011, 
 24.90,   1.75E-010, 
 25.00,   2.11E-010, 
 25.10,   2.06E-010, 
 25.20,   1.76E-010, 
 25.30,   1.42E-010, 
 25.40,   5.52E-011, 
 25.50,   1.47E-010, 
 25.60,   4.97E-010, 
 25.70,   9.56E-010, 
 25.80,   1.31E-009, 
 25.90,   1.66E-009, 
 26.00,   1.84E-009, 
 26.10,   1.81E-009, 
 26.20,   1.58E-009, 
 26.30,   1.07E-009, 
 26.40,   7.45E-010, 
 26.50,   8.75E-010, 
 26.60,   1.50E-009, 
 26.70,   2.43E-009, 
 26.80,   3.37E-009, 
 26.90,   3.81E-009, 
 27.00,   4.16E-009, 
 27.10,   4.41E-009, 
 27.20,   4.14E-009, 
 27.30,   3.86E-009, 
 27.40,   6.14E-009, 
 27.50,   2.63E-008, 
 27.60,   9.66E-008, 
 27.70,   1.62E-007, 
 27.80,   1.87E-007, 
 27.90,   1.75E-007, 
 28.00,   1.67E-007, 
 28.10,   1.51E-007, 
 28.20,   7.14E-008, 
 28.30,   2.16E-008, 
 28.40,   1.11E-008, 
 28.50,   7.74E-009, 
 28.60,   8.19E-009, 
 28.70,   1.00E-008, 
... 714 more lines ...
  815   Friday, December 05, 2014, 13:46 Anders MjosConditioning StationDevelopmentTM2 Not able to start water system

 TCS:WPV1 does not open when staging is enabled. Multiple attempts have been made, but the valve remains closed.

  814   Friday, December 05, 2014, 11:58 David WangConditioning StationDevelopmentTM2 helium pressure test on TM2 tube heater +(D) water lines.

At CS, The leak detector is hooked directly to the TM2 top service cap. The base LR 0.0xE-9 atm.cc/sec, base pressure 0.0xE-4torr. Applied 80 psi helium to TM2 tube heater +(D) line . During 3 minutes applying time , I did  not see any tiny change on LD readings. The line is perfectly vacuum sealed.  See attachment pictures.

Attachment 1: 004.JPG
004.JPG
Attachment 2: 005.JPG
005.JPG
Attachment 3: 003.JPG
003.JPG
Attachment 4: 006.JPG
006.JPG
Attachment 5: 002.JPG
002.JPG
Attachment 6: 007.JPG
007.JPG
  813   Friday, December 05, 2014, 07:47 David WangConditioning StationDevelopmentTM2 TM2 at CS

The pumping down on TM2 at CS was good overnight. However, the back up line pressure is still too high for LD to get to 0.0-E-9atm.cc/sec . It only could get to 1.2xE-7 atm.cc/sec. It is not enough for a good leak check . I dont want to have any ambiguous situation on this" D" line leak check. So,I am going to reconfigure the leak detector to the spare KF25 pot on the TM2 service cap. All pumps are stopped . The CS and TM2 will be vented soon. After that, a manual valve will be installed on that spare KF25 pot for future helium pressure check at CS. Then, The TM2 and CS will be pumped down again.

  812   Thursday, December 04, 2014, 16:37 David WangConditioning StationDevelopmentTM2 connected TM2 and CS vacuum system .

I connected TM2 and CS vacuum system. All vacuum pumps on TM2 and CS are started .The pumping down is good so .far

  811   Thursday, December 04, 2014, 09:57 Travis CaveSpent Target VaultStandard Operation  Spent target placed in F-308.

Spent targets in the mini storage were placed into the F-308s yesterday, all F-308 have been removed from the the target hall and they no reside for the time being in the hallway between the north and south hot cells.

  810   Thursday, December 04, 2014, 09:54 Travis CaveSouth Hot-CellStandard OperationTM2no targetElectrical check

Results of electrical check of TM#2 with no source tray and no containment box attached. See PDF for results.

Attachment 1: TM2_elec_check_no_source_traySHC.PDF
TM2_elec_check_no_source_traySHC.PDF
  809   Thursday, December 04, 2014, 09:49 Travis CaveConditioning StationStandard OperationTM2no targetmodule move

TM#2 has been moved from the south hot cell to the conditioning station.

  808   Tuesday, December 02, 2014, 13:33 David WangSouth Hot-CellDevelopmentTM2 Leak check on TM2 tube heater +(D) at SHC

Chad and I leak checked TM2 tube heater+(D) circuit at SHC with water bypass loop and new seals installed on the water block. The LD base LR 0.0xE-9 atm.cc/sec,base pressure0.0xE-4 torr. Chad sprayed helium on the leak check area in SHC for 5 seconds. No any response has been found on LD during 1minutes waiting time. The test was repeated again and the result is same. NO LEAK at this stage!  After the TM2 is moved to CS , The D line will be pressured with 80 psi helium for helium pressure leak test before any hot water is circuited through it.  

Attachment 1: 2014-12-02_003.JPG
2014-12-02_003.JPG
Attachment 2: 2014-12-02_001.JPG
2014-12-02_001.JPG
Attachment 3: 2014-12-02_004.JPG
2014-12-02_004.JPG
  807   Tuesday, December 02, 2014, 10:15 chad fisherSouth Hot-CellRepairTM2 TM2 Reburb. Loop Install

Final polish, clean with methanol and clean compressed air.

Loop installed and torqued to 90 in lbs.

Minimum of approximately 1"  between loop and containment box at closest point.

Attachment 1: TM2_20141202_01.jpg
TM2_20141202_01.jpg
Attachment 2: 20141203_142215.jpg
20141203_142215.jpg
Attachment 3: 20141203_143530.jpg
20141203_143530.jpg
  806   Monday, December 01, 2014, 14:48 Travis CaveSpent Target VaultStandard Operation  F-308s moved

The F-308s have been moved into the target hall,  for filling on wednesday.

  805   Monday, December 01, 2014, 14:06 chad fisherSouth Hot-CellRepairTM2 TM2 REFURB. WATER LOOP TEST

Some issues with the turntable and having to wait for a decision on whether to remove TM2 from the hot cell so that TM4 with dead UCx target could be put in this morning.

Progress on TM2:

  • Containment box has been removed from TM2.
  • Water block jig has been installed.
  • Existing blank off has been removed.
  • Sealing surfaces have been inspected.
  • First stage of sealing surface cleaning has been performed.

Tomorrow:

  • Polish of sealing surfaces.
  • Installation of loop.
  • Vacuum/helium leak check of loop.

TM2_20141201_03 - sealing surfaces before cleaning...kind of dirty

TM2_20141201_05AC - sealing surfaces after cleaning...looks good!

Attachment 1: TM2_20141201_01.JPG
TM2_20141201_01.JPG
Attachment 2: TM2_20141201_02.JPG
TM2_20141201_02.JPG
Attachment 3: TM2_20141201_03.JPG
TM2_20141201_03.JPG
Attachment 4: TM2_20141201_04.JPG
TM2_20141201_04.JPG
Attachment 5: TM2_20141201_05AC.jpg
TM2_20141201_05AC.jpg
  804   Monday, December 01, 2014, 12:05 maicodallavalleSpent Target VaultMaintenance  F-308 Maintenance

F-308's have been serviced and are ready to be filled with spent targets. F-308's witch were serviced are #6,#13,#15,#16,and #19.

  803   Friday, November 28, 2014, 13:06 Travis CaveSouth Hot-CellStandard OperationTM2no targetmodule move

TM#2 with no target or source tray has been moved from the north east silo to the south hot cell.

  802   Wednesday, November 26, 2014, 11:11 Travis CaveSpent Target VaultStandard Operation Ta#38, Nb#7, TiC#3, NiO#2, and SiC#29Spent targets moved to mini storage

The following targets have been moved to the mini storage from the target storage vault:

  1. Ta#38
  2. Nb#7
  3. TiC#3
  4. SiC#29
  5. NiO#2

These target will be removed from the mini storage and placed into the F-308's on December 3rd.

  801   Tuesday, November 25, 2014, 12:45 David WangITEStandard OperationTM4UCx115 Shielding blocks have been transferred from ITW to ITE.

5 Shielding blocks have been transferred from ITW to ITE. The ITE is configured to take proton beam.

  800   Tuesday, November 25, 2014, 11:33 David WangSouth Hot-CellDevelopment  Remove UCX 11 target transfer stand from SHC back to TH.

The stand was used for transferring UCX11 targte from TH to SHC. The stand wit target was craned down from TH into SHC last week and stayed there over weekend. Chad and I removed the stand out of SHC yesterday. It was heavily contaminated. RPG and I spent more than 3 hours to clean this stand. See the emails I pasted below for  detail information.

Thanks, David, for letting me know about this. Here are survey results after my afternoon in Target Hall:

I spent 1.5 hours on additional decon of the stand, crane hook, and area around where David was doing the decon, finding up to 10k cpm (44-2) on some parts at first. Danka came to help after a bit (THANK YOU, DANKA) and we left the items covered in plastic and surveyed the area. Contamination survey results are as follows, numbers are units of cpm on the 44-2/RM14:

Tacky mats inside TMH door: 6000/2000

Tacky mats in hall before TMH door: 200/0

Tacky mats at boot box: 8000/4000

My booties: 50/0

Air sample at the decon area: 50/60 (also 100 cpm on alpha probe)

Floor swipes post-decon of floor: 0/0

Early results from a 10 min assay of the tacky mats shows predominantly Kr-85, Be-7, Sr-85, Rb-83, and Sr-82. A longer assay is underway.

The following measurements were made using the checking cave at the boot box (units of cpm):

David's respirator cartridges: 160

David's respirator: 0

Davids tank suit and booties: 1200

My suit: 100

My respirator: 0

The rags used for the decon work were contained in a bag and left behind the silos by the DST. This bag measured 240 uSv/h OC and 2 uSv/h at 0.5m

Thanks,

Andrew

 

On 11/24/2014 12:57 PM, David Wang wrote:

Hi all, The UCx#11 target transferring stand is moved back from SHC to TH. However, the stand was heavily contaminated. On the first Windex clean up towel, the counts directly shoot over the 500K counts which is the maximum scales on both RM14 and 44-2. After almost 2 hours, more than 20 times cleaning up with Windex spray and paper towel wipe , the counts dropped below 300 now. It is extremely difficult to clean up this stand.  I dont think we should move the target this way again unless we have a solution on the contamination clean up. The stand is still hanging  on the crane, and waiting for RPG checking.                        Thanks    David

  799   Friday, November 21, 2014, 10:40 Travis CaveSpent Target VaultStandard Operation Ta#44Spent target move

The spent Ta#44 target has been removed from the south hot cell, it was placed in pail #121 and placed in spot 4A of the storage vault. It was 276mSv/hr upon removal from the south hot cell.

Attachment 1: Vault_Storage_November_21_2014.pdf
Vault_Storage_November_21_2014.pdf Vault_Storage_November_21_2014.pdf Vault_Storage_November_21_2014.pdf Vault_Storage_November_21_2014.pdf
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