 Wednesday, February 01, 2012, 09:54, David Wang, ITW, Maintenance, TM1, , ITW and TM1 winter shut down vacuum leak check
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ITW and TM1 winter shut down vacuum leak check had been finished yesterday.All ITW primary vacuum vessel, secondary vacuum vessel, and TM1water lines
had been leak checked.No any leak has been found .The ITW and TM1 are both leak tight.Some detail information below:
TM1 and ITW primary vacuum vessel and water lines: The leak detector was hooked on BV2 after TP2. Calibrate leak detector.leak |
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Monday, April 02, 2012, 08:17, David Wang, Conditioning Station, Development, , , conditioning station IMC pump down.
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I pumped down conditioning station IMC today. The inside bellow pressure is -20 psi on the gauge.Visually checked the bellow before and after pump.The
bellow is in retracted condition now. |
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Tuesday, April 03, 2012, 12:11, David Wang, Conditioning Station, Development, , , leak check on conditioning station vacuum system
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I did a leak check on conditioning station vacuum system today.The vacuum system had been roughed over night . This morning before the leak check,the
convectron gauge reading on emittance box is 20m torr which is reasonable. I hooked the leak detector to system (without turbo pump on)
. The leak detector showed base LR 6.3xE-8 atm.cc/sec. At this base LR, I found 2 leaks up to low E -6range on that cross tube flange to small turbo pump, |
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Thursday, April 05, 2012, 10:30, David Wang, ITE, Standard Operation, TM4, , I moved 5 shielding blocks back to ITE this morning.
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| MAA is secured .The ITE and MAA are ready for taking proton beam now. |
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Thursday, April 12, 2012, 14:40, David Wang, Conditioning Station, Development, TM1, , conditioning staion and TM1 is under TP1 and TP2 pumping now.
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TM1 moved to conditioning station to today. After moving, I connected the vacuum system which include all gauges ,vacuum lines , controllers,and fans.I
started roughing the station through two turbo pumps(on TM1) . After 2 hours roughing, the station vacuum went to 100 mtorr. I started TP1 and TP2 on TM1
and turned on 3 gauges (png1 on service cap, ig1 on service cap ,and png4 on emittance box) . All turbo pumps and high vacuum gauges work fine .The |
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Friday, April 13, 2012, 12:31, David Wang, Conditioning Station, Development, TM1, , TM1 and conditioning station leak check.
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Thursday, April 26, 2012, 09:23, David Wang, ITE, Repair, TM4, , changed flow wheel on ITE TM4 contaiment box water circuit
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The the magnetic field on ITE TM4 flow wheel was gone yesterday.So there is no water signal on this circuit. The water flow is fine ,and the wheel
is rotating. I removed 1 shielding block on ITE and replaced the old wheel with a new one.Now the containment box water signal is normal.The problem is
fixed.The shielding block is back. |
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Thursday, April 26, 2012, 13:01, David Wang, ITE, Repair, TM4, , Replaced TM4 EE water flow wheel in ITE.
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Due to weak magnetic field on TM4 EE water flow wheel, we have two times intermittent water signal on this circuit this morning. I replaced the old
wheel with a new one in ITE. I checked the signal frequency and strength.It looks fine now. |
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Wednesday, May 02, 2012, 11:27, David Wang, ITW, Standard Operation, TM1, , ITW is ready for taking proton beam.
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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. |
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Tuesday, May 08, 2012, 10:28, David Wang, ITE, Standard Operation, TM4, , Disconnected TM4 in ITE.
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I disconnected TM4 in ITE. The heat shield water circuit is purged. I closed the water supply to ITE.Now, the water system only supply water to
ITW and the system pressure is 110 psi which is good.I visually checked S-tank sight glass,and the water level is stable comparing to last week. Also,
I visually checked the ITW water signals strength and stability on electrical panel from electrical room.Everything looks fine. |
Friday, May 25, 2012, 10:48, Travis Cave, Spent Target Vault, Standard Operation, , , Moving the spent targets to mini storage. 
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Five targets were moved to the mini storage today in preparation for transfer of the targets to the F308s later next week. The moves went well. See the
attached files for the vault and mini storage details. |
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Monday, May 28, 2012, 13:05, David Wang, ITE, Standard Operation, , , I moved 5 shielding blocks from ITW to ITE .
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5 shielding blocks have been transferred from ITW to ITE. ITE ventilation is opened, and ITW closed. All ITE water signals have been
checked for frequency and strength.They are all good. ITE is ready for taking proton beam. |
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Wednesday, June 06, 2012, 08:21, David Wang, ITW, Standard Operation, TM1, , TM1 disconnected in ITW
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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. |
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Monday, June 25, 2012, 14:39, David Wang, ITW, Standard Operation, , , I moved 5 shielding blocks from ITE to ITW,
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and set up ventilation for ITW. ITW is ready for taking proton beam now. All water interlock checks for ITW are done. The ITW water signals strength
and frequency had been checked from electrical room, and everything is good. |
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Tuesday, June 26, 2012, 14:10, David Wang, South Hot-Cell, Repair, TM3, , TM3 heat shield and window circuits leak check is done.
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Chad and i did a leak check on TM3 heat shield and window circuits.Both circuits are pumped easily down to the bottom leak rate and base pressure 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
) . There is no response on leakdetecor during 45 seconds waiting time. On window circuit there are 2 VCR joints. Chad sprayed helim on these joints(2seconds |
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Tuesday, July 03, 2012, 10:50, David Wang, ITE, Standard Operation, TM4, , Disconnected TM4 in ITE.
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| I disconnected TM4 in ITE this morning. The window circuit and heat shield circuit had been purged. The general field inside ITE is about 200usv/h. |
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Friday, July 13, 2012, 16:33, Bevan Moss, Crane, Repair, , , Crane has stopped working
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In the AM today David and I used the crane to raise the ground plate sheet metal into place. This afternoon when I attempted to return the crane to its
usual place I discovered that the crane no longer worked. Upon further inspection it appears that the PLC has lost power. I will follow up on this Monday
morning. The crane is not supporting any load at this point. |
 Monday, July 16, 2012, 11:55, Bevan Moss, Crane, Repair, , , Crane has stopped working
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Bevan Moss wrote:
In the AM today David and I used the crane to raise the ground plate sheet metal into place. This afternoon when I |
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Wednesday, July 18, 2012, 16:49, Grant Minor, South Hot-Cell, Development, , , South Hot Cell Ventilation Alarm Trip
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Today (Wednesday July 18th) at around 4:15 pm I was taking a small tour group from VECC into the Target Hall. In the process of discussing the mechanical
design of the Target Modules and South Hot Cell turntable I inadvertently lifted the Aluminum Hatch Cover of the Hot Cell about 2 inches in an effort
to explain something. This tripped the ventilation alarm before I realized what I was doing. I evacuated the visitors from the Target Hall, checked |
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Wednesday, July 18, 2012, 16:49, Grant Minor, South Hot-Cell, Development, , , South Hot Cell Ventilation Alarm Trip
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Today (Wednesday July 18th) at around 4:15 pm I was taking a small tour group from VECC into the Target Hall. In the process of discussing the mechanical
design of the Target Modules and South Hot Cell turntable I inadvertently lifted the Aluminum Hatch Cover of the Hot Cell about 2 inches in an effort
to explain something. This tripped the ventilation alarm before I realized what I was doing. I evacuated the visitors from the Target Hall, checked |
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