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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Category Type Moduledown Target/Number Subject
  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.

  128   Tuesday, June 19, 2012, 16:18 David WangITWStandard OperationTM1Ta38TM1connected in ITW

 We moved TM1 to ITW today, I connected TM1 to ITW, and started all turbo pumps this afternoon. TP4s is very difficult to bring to 38 KRMP now. I have to use soft start model and tried twice to get this pump started (1.5 hours). This pump always had a difficult start time during the past 2-3 runs. I talked with Friedhelm and we think it should be replaced after this run. I will issue an e-fault on this pump and try to get a new pump from vacuum group. It will take 2 hours to change this pump. I could do this job with another person help. Or, vacuum group could do it. Don can schedule a time for this job before next run. Anyway, it should work fine for this run.  The water interlock check related to TM1 is done. I will do the rest before blocks on. All TM1 water signals are strong and good. All vacuum gauge readings are good so far(below5.0xe-5 torr).

 

  151   Tuesday, July 31, 2012, 09:52 David WangITWStandard OperationTM1Ta38TM1 disconnected in ITW

I disconnected TM1 in ITW.  Heat shield line has been purged .

  152   Tuesday, July 31, 2012, 10:50 Travis CaveSouth Hot-CellStandard OperationTM1Ta#38module move

TM#1 with Ta#38 has been moved from the west target station to the south hot cell, no problems with the move.

  153   Tuesday, July 31, 2012, 12:24 chad fisherSouth Hot-CellStandard OperationTM1UCx#4UCx#4 Installed

Starting at 11:00 am and finishing at 12:10 Ucx#4 previous target was removed and UCx#4 installed and leak checked on TM1.

During module move to the hot cell UCx#4 was housed in a bag under argon.

  154   Tuesday, July 31, 2012, 12:50 David WangSouth Hot-CellStandard OperationTM1UC xTM1 heat shield circuit leak check with UC x target

Chad and i did a leak check on TM1heat shield with UCx target on.The circuit are pumped  down to the bottom leak rate and base pressure is 3xE-3 torr on the leak detector. There are two VCR caps on heat shield circuit. Chad sprayed helium on both of them   ( tested individually,2 seconds every time ) . The test repeated 1 time.There is no response on leak detector during 45 seconds waiting time on both time.Chad flushed helium around the target for 15 second. During 1 minutes waiting time , there is no response on leak detector.The heat shield circuit is leak tight at this stage. It will be helium pressure  in CS later.

  155   Tuesday, July 31, 2012, 14:04 Travis CaveConditioning StationStandard OperationTM1UCx#4module move

TM#1 with UCx#4 has been moved from the south  hot hell to the conditioning station. No problems with the move.

  156   Wednesday, August 01, 2012, 09:14 Travis CaveConditioning StationStandard OperationTM1UCx#4Electrical check

TM#1 with UCx#4 electrical check done at the conditioning station under vacuum, see attached sheet for results.

Attachment 1: TM#1_UC#4_under_vac.PDF
TM#1_UC#4_under_vac.PDF
  157   Thursday, August 02, 2012, 07:48 David WangConditioning StationStandard OperationTM1UCxTM1 UCx target heat shield helium pressure check is done.

Connected leak detector to TM1 and CS vacuum system. The vacuum readings on TM1 and CS:PNG4 3.6 xE-6 Torr, IG1 1.1xE-6torr, IG4(diagnostic box) 3.4xE-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 4 mins . There is no response on leak detector. The heat shield circuit is leak tight.

  160   Tuesday, August 14, 2012, 11:16 Travis CaveITWStandard OperationTM1UCx#4module move

TM#1 with UCx#4 has been moved from the conditioning station to the west target station move went well.

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