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ID Date Authordown Category Type Module Target/Number Subject
  251   Friday, March 01, 2013, 11:35 David WangITEMaintenanceTM4 Leak check on ITE and TM4.
 The leak check on TM4 and ITE is done. All primary vacuum vessel , secondary vacuum vessel  on TM4 and ITE are leak tight. There is no any response had been found on leak detector(leak detector base LR 0.0xE-9 arm.cc/sec). All water lines had been pressurized to 70 psi helium for 3 minutes. They are all perfect leak tight( I cant find even a tiny response on leak detector) except GE water cooling line. On the GE water line, the leak detector got a instantaneous response once I applied the helium to the circuit.The leak rate climbed directly from 0.0xe-9 atm.cc/sec to 1.5 xe-5 atmcc/sec even if I stopped the helium pressurizing immediately. Once I purged the helium out of the line, the leak rate return to 0.0XE-9 atm.cc/sec quickly. I repeated the test on GE water line again and got exactly same result as the before. I would say the leak on the ITE GE water circuit isn't a small leak. The same test could be fulfilled once the TM4 is in CS later. 
  254   Wednesday, March 06, 2013, 14:12 David WangITWRepair  ITW EXIT1 tank to module o-ring replacement
 ITW EXIT1 o-ring replacement is fininshed today. The ITW EXIT 1 is back to ITW. The old o-ring lost most its elastic property and changed to stiff sqaure shape inside the slot.The flange surface around the o-ring slot was dirty. I cleaned the o-ring surface completely before putting the new o-ring . Everything should be fine now. There will be a leak check late on this new installed o-ring.
  262   Thursday, March 14, 2013, 07:09 David WangSouth Hot-CellStandard OperationTM4 TM4 electrical test at SHC after windown and containment box back.

TM4 electrical test at SHC after windown and containment box back is done. Everything is fine.

  263   Thursday, March 14, 2013, 07:18 David WangSouth Hot-CellStandard OperationTM4 TM4 window cooling line leak check

It took a long time(more than 1 hour)   to pump down the TM4 window  cooling line during leak check time. The base leak rate could only be pumped to 5.8xE-9 atm.cc/sec.Base pressure is 0.0xE-4 torr which is bottom reading. Chad and i did the leak check at this base leak rate .No leak had been found. The window cooling line is leak tight at this stage. A pressure helium test will be fulfilled in conditioning station on this cooling line later.

  272   Wednesday, March 20, 2013, 08:19 David WangConditioning StationRepairTM4 Leak check new installed TM4 TP1 at conditioning station.

I leak checked new installed TM4 TP1 at conditioning station. The CS vacuum gauges reading were at 1.0-1.5xE-6 torr . Leak detector base leak rate 0.0xe-9atm.cc/sec, base pressure 0.0xe-4torr. I sprayed helium around the pump  inlet flange and KF 25 pump outlet flange to pump joint. There is no response on leak detector. The new installed TP1 is leak tight.

  280   Wednesday, March 27, 2013, 11:49 David WangITEStandard OperationTM4Sic LIS-RFQ Connected TM4 in ITE

TM4 has been reconnected to ITE after the module moving. The roughing is started . The water will be supplied to ITE after  testing  the water  pumps . The water interlock check will be done on next week also.

  281   Wednesday, March 27, 2013, 12:08 David WangSouth Hot-CellStandard OperationTM4Sic LIS-RFQTM4 heat shield circuit leak check with SiC LIS-RFQ target

Chad and I did the TM4 heat shield leak check yesterday at SHC. The leak detector was pumped to 4.6 xE-9atm.cc/sec, and 0.0xE-4 torr after 1.5 hours pumping. Chad sprayed helium twice on both VCR fittings. There is no response had been found during each 45 seconds waiting time. Since the module moved to ITE directly,we didnt have helium pressure test this time. I  would say thee heat shield circuit is leak tight. so far.

  284   Wednesday, April 03, 2013, 12:26 David WangITEMaintenanceTM4Sic LIS/RFQLeak check on ITE TM4.

TM 4 had been leak check in ITE due to   relatively high PNG1 and IG1 readings.All TM4 primary and secondary  vessel air to vacuum seals had been leak checked. All water lines in TM4 had been helium pressured . There is no leak had been found so far.

  294   Thursday, April 11, 2013, 07:18 David WangConditioning StationMaintenanceTM1Ta#29helium pressure tested all water lines in TM1 at CS

On April 08th, all water lines in TM1 had been helium pressure tested(70psi) at conditioning station. No leak had been found.

  295   Friday, April 12, 2013, 10:27 David WangITWStandard OperationTM1 I reconnected TM1 to ITW.

TM1 has been reconnected in ITW. Water interlock check for TM1 is done.

  296   Friday, April 12, 2013, 10:32 David WangITWRepairTM1 ITW EXIT1 tank to module o-ring leak check.

I leak checked new installed ITW EXIT1 tank to module o-ring.No leak had been found . Also ,TM1 primary vessel air to vacuum seals had been checked at the same time. There was no response had been found on leak detector.

  302   Wednesday, April 17, 2013, 10:35 David WangITEStandard OperationTM4 I moved 5 shielding blocks back to ITE.

5 shielding block had been moved  back to ITE. The ITE is configured to take proton beam.

  310   Monday, April 22, 2013, 09:33 David WangConditioning StationRepairTM3 Leak check TM3 at conditioning station

TM3 leak check at conditioning station without target: TM3 all air to vacuum seals have been leak checked . They are all good. Water lines TAR(+-), TUBE(+-), GAS, MSP , COIL2(+-), EE, HS(1,2) , GE,and WINDOW have been helium pressurized to 70 psi for 2 minutes each . No response had been found on leak detector. They are leak tight.. Leak detector BR 0.0xE-9atm.cc/sec, BP 0.0xE-4 torr. TM3 and CS vacuum: PNG15.2xE-6 torr, IG1 8.8xE-7 torr,IG2 2.8xE-6torr, IG1S 1.3xE-6 torr.      

  331   Tuesday, May 07, 2013, 12:07 David WangITWStandard OperationTM1 I moved 5 shielding blocks from ITE to ITW.

Water interlock check  on ITW is done. All water signals are strong on EL panel.  ITW is configured to take proton beam.

  343   Wednesday, May 15, 2013, 10:00 David WangITEStandard OperationTM4 Disconnected TM4 in ITE.

HS had been purged. The ITE is under venting. The TM4 will be moved to SH on next Tuesday which is May 21th.

  358   Thursday, May 23, 2013, 11:14 David WangSouth Hot-CellStandard OperationTM4TA#40 TM4 TA# 40 HS leak check at SHC

TM4 Ta#40 HS leak check is done at SHC . No leak has been found so far. There will be  a helium pressure test on it at CS.

  371   Wednesday, May 29, 2013, 06:32 David WangITEStandard OperationTM4Ta#40TM4 has been connected in ITE.

TM4 has been connected in ITE. The pumping down is fine so far.TM4 water interlock check was done yesterday.

  374   Tuesday, June 04, 2013, 12:36 David WangITEStandard OperationTM4 5 shielding blocks are transferred from ITW to ITE

Dan an I  transferred 5 shielding blocks from ITW to ITE. The ITE is configured to take proton beam.

  376   Tuesday, June 11, 2013, 10:05 David WangITWStandard OperationTM1 Disconnected TM1 in ITW.

Dan and I  disconnected TM1 in ITW.

  387   Wednesday, June 26, 2013, 11:03 David WangSouth Hot-CellStandard OperationTM1 Leak check on TM1 UCx target heat shield

Chad and I leak checked the TM1 UCx target heat shield at SHC. No leak has been found so far.

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