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  RH-ISAC, Page 88 of 141  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Category Type Moduledown Target/Number Subject
  87   Tuesday, April 17, 2012, 11:30 Travis CaveSouth Hot-CellStandard OperationTM1no targetmodule moved

TM#1 moved from conditioning station to the south hot cell, the module had a field of 16mSv/hr.  The move was not without excitement as the crane decided on its own to move 2 inches west on two occasions during the move.On the second time that the errant moved happened I hit the E-stop on the crane kill the power, the first time it happen it stopped the errant movement on its own.

  88   Thursday, April 19, 2012, 09:36 Travis CaveSouth Hot-CellStandard OperationTM1Nb#6Electrical check

Electrical check has been completed of TM#1 with Nb#6 attached. Our new micro-ohm meter was also used for the first time for this test.

Attachment 1: Elec_Check_TM1_Nb6.PDF
Elec_Check_TM1_Nb6.PDF
  89   Thursday, April 19, 2012, 09:48 David WangSouth Hot-CellStandard OperationTM1LP SIS Nb 6leak check heat shield circuit

Chad and I did a leak check on TM1 Nb5 target heat shield circuit. The leak detector was connected to heat shield circuit.The pumping down  of the  circuit is very smooth.Base leak rate is 0.0xE-9atm.cc/sec,and the base pressure is 0.0xE-4 torr. Chad checked the helium flow downstairs .He sprayed helium to both up and down VCR joints 2seconds each time. There is no any response on leak detector(30 seconds waiting time). Both joints did the same test twice, no response . Finally, he flushed helium around the target for 10 seconds,and i didnt see any response on leak detector either.The heat shield circuit on TM1 Nb5 target is leak tight at this stage.

  90   Friday, April 20, 2012, 14:07 Travis CaveConditioning StationStandard OperationTM1Nb#6module move

TM#1 with Nb#6 is now in the conditioning station. The fields of the module at the south cell was 15.8mSv/hr. The move was uneventful. Don Dale was present for the move locking out parts of the code so only one movement of the crane could be done at a time.

  92   Tuesday, April 24, 2012, 10:02 Travis CaveITWStandard OperationTM1Nb#6module move

TM#1 with Nb#6 from the conditioning station to the west target station, move was uneventful. Mike LaRoss was there today for move in place of Don Dale working the PLC.

  93   Tuesday, April 24, 2012, 10:36 Bevan MossConditioning StationStandard OperationTM1Nb#6HV test April 23

 A HV test was complete on TM1 with Friedhelm, David, and Myself. The module behaved as it has in other tests. The vacuum achieved was 1.6 x 10^-6 in the diagnostics box, 2.3 x 10^-6 in the containment box, and 8.6 x 10^-7 in the service cap. Maximum voltage without continuous sparking achieved was 27kV. Current was unstable varrying from 40 to 300 uA. This voltage was held for 10 minutes. 

  94   Tuesday, April 24, 2012, 10:38 David WangConditioning StationStandard OperationTM1 LP SIS Nb6TM1 heat shield circuit leak check with Nb5

 The pumping down on TM1 and conditioning station is fine over the weed end. The PNG 1(containment box) is 2.4xe-6 Torr, the IG1 (top service cap) is 9.0 xE-7 Torr, and the IG4 is 1.9xE-6Torr (diagnostic box). At this pressure, I connected the leak detector to the system and applied 80psi helium to the heat shield circuit. The leak rate and base pressure on leak detector are 0.0xE-9 Atm.cc/sec and 0.0xE-4Torr. There is no any response on leak detector during 4mins helium applying time. So the heat shield and Nb5 target water circuit is completely leak tight.

  97   Wednesday, May 02, 2012, 11:27 David WangITWStandard OperationTM1  ITW is ready for taking proton beam.

 I moved 5 shielding blocks from ITE to ITW .  I checked  all ITW water signals strength and frequency in electrical room, and everything looks fine.The ventilation system is set up for ITW. MAA is locked. ITW is ready for taking proton beam.

  115   Tuesday, June 05, 2012, 12:20 Bevan MossSouth Hot-CellStandard OperationTM1Ta#38Target inserted into HC

Ta#38 has been placed into the south hot cell. Swipes of the tool port were taken there was a count of 600 on the floor and 150 on the walls and top. 

  116   Tuesday, June 05, 2012, 15:06 Bevan MossITWStandard OperationTM1Nb#6Module move from ITW to SHC

 TM1 has been moved from ITW to the SHC. The move did encounter some issues, one of the railings for preventing people from falling into the MAA was hit with the containment box. This caused the module to rotate. The module rotated ~90 degrees before the problem was noticed. The module was backed off from the post once noticed but had already freely rotated. The box was inspected with the cameras prior to being inserted into the SHC. No damage was detected. The error came as a result of over confidence. It did appear it was going to be hit but as the module moved closer I believed that there would be clearance. The angle of the camera has caused the module to appear it was going to hit thing before in the past but it actually (once the module was closer to the object) had several feet of clearance. This is not a mistake I will make again.

Chad Fisher, Grant Minor, and Don Jackson, have been alerted about this. Chad will complete another visual inspection in the hot cell. David will take swipes of the pole to ensure there is no contamination. 

  117   Wednesday, June 06, 2012, 08:21 David WangITWStandard OperationTM1 TM1 disconnected in ITW

I disconnected TM1 in ITW yesterday morning.The general radioactive level in ITW over the TM top (300mm) is about 350 usv/hr. contacting level on TP1 and TP2 are 1.0-1.2 msv/hr. I took 0.22 msv dose .The module is moved to

south hot cell later and a shielding plug is put back to ITW. Everything is fine.

  118   Wednesday, June 06, 2012, 13:36 chad fisherSouth Hot-CellStandard OperationTM1Ta#38Target Change Nb#6 - Ta#38

Nb#6 was removed from TM1...it looked very clean.

Ta#38 was installed onto TM1...fit well.

Isaac Earle did this change with supervision in an effort to cross train.

TM1 containment box was checked for damage from the "bump" it got during yesterday's move. There was new scratches on the shutter side panel. Picture to follow.

The front containment box panel was "difficult" to remove...it required a good pull to get off.

 

  119   Wednesday, June 06, 2012, 14:33 David WangSouth Hot-CellStandard OperationTM1Ta38leak check heat shield circuit

Chad and I did a leak check on heat shield circuit after target is installed on TM1.The leak detector pumping down is smooth. The base leak rate is 0.0xE-9 atm.cc/sec. The base pressure is 0.0xE-4torr. Chad checked helium flow downstairs and sprayed helium to each joints for 2 seconds.The first joints is good and there is no any response on leak detector.we double checked it again and got the same result. On the second joint, Chad sprayed helium 2second. After 15 second of spraying,the leak detector got a response which climbed to 3.2xE-8 atm.cc/sec max,and back to 2.5 XE-8 atm.cc/sec. Chad tried to tighten the fitting. During his tight, the leak rate response to 7.5x E-8 atm.cc/sec momentarily. After the tightening ,the leak rate back to 0.0x E-9atm.cc/sec whic is the base.So we sprayed the helium to the joint again.This time ,there is no any response on leak detector. We checked this joint  again and got the same result which is no response. Finally, Chad flush the helium around the target for 10 second ,and during 45 sec observation time there is no any response on leak detector. I would say the heat shield circuit is leak tight so far. I will do a helium pressure test on it once the TM1 is moved the CS.

  120   Thursday, June 07, 2012, 11:58 Bevan MossConditioning StationStandard OperationTM1Ta38Module Move from SHC to TCS

TM1 was moved from SHC to the TCS. The mode took roughly 1 hour. During the move the north east corner of the containment box caught slightly on the flange of the vacuum vessel and then slipped off. The contact was minimal but should none the less be noted. After sliding off of the flange the module did not crash into the other sides of the vacuum vessel, this is why I believe the contact was minimal. It should be noted that the corner of concern is the one that is most difficult to see.

  121   Friday, June 08, 2012, 11:07 David WangConditioning StationStandard OperationTM1Ta38conditioning staion and TM1 is under TP1 and TP2 pumping now.

I connected vacuum system to TM1 and conditioning station and started two turbo pumps yesterday. The pumping an d vacuum readings  are verg good so far(all below 5xE-6 torr). Helium pressure test on heat shield circuit will be fulfilled next week.

  122   Friday, June 08, 2012, 15:00 Don JacksonSouth Hot-CellStandard OperationTM1Nb#6Electrical Check Nb#6 at end of run

Megger check values were low but still within operational range.

Attachment 1: Nb#6_End_of_Run.JPG
Nb#6_End_of_Run.JPG
  123   Friday, June 08, 2012, 15:03 Don JacksonSouth Hot-CellStandard OperationTM1Ta38Electrical Check on new Ta38 at hot cell

Megger checks were exceptionally high (good).  Readings taken less than 2 hours after reading low values from end of run on Nb#6.  Tests on Ta38 will be repeated at conditioning station later.

Attachment 1: Ta38_New_Target.JPG
Ta38_New_Target.JPG
  125   Monday, June 11, 2012, 14:14 Travis CaveConditioning StationStandard OperationTM1Ta#38Electrical check

Electrical check of TM#1 with Ta#38 at the conditioning station under vacuum. See attached file for details.

Attachment 1: TM#1_Ta38_at_constat_elec_check.PDF
TM#1_Ta38_at_constat_elec_check.PDF
  126   Monday, June 11, 2012, 14:41 David WangConditioning StationStandard OperationTM1Ta38Heat shield helium pressure test

Connected leak detector to TM1 and CS vacuum system. The vacuum readings on TM1 and CS:PNG1 1.3 xE-6 Torr, IG1 4.7xE-7torr, IG4(diagnostic box)1.5xE-6 Torr. Leak detector base pressure:0.0xE-4 torr, base leak rate: 0.0xE-9 atm.cc/sec. Applied 80 psi helium to heat shield circuit for 5 mins . There is no response on leak detector. The heat shield circuit is leak tight.

  127   Tuesday, June 19, 2012, 10:35 Travis CaveITWStandard OperationTM1Ta#38module move

TM#1 with Ta#38 moved from the conditioning station to the west target station. Move went well.

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