 Thursday, January 12, 2012, 14:32, David Wang, ITE, Repair, TM4, , TP2 on TM4 has been replaced
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TP2 on TM4 has been replaced with a new turbo pump , I didnt reset the controller in electrical room.So this new pump start to run at 8083 hours
on ITE TP2 controller. The new TP2 pump properly started. It works fine now. |
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Monday, January 16, 2012, 09:30, David Wang, ITE, Maintenance, , , Changed all old inducion coils for flow sensors in ITE
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I had changed all old induction coils for flow sensors in ITE .I checked all ITE water signals on control boards in electrical room.They are all very
stable and constant.All ITE inductions coils work fine now. |
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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 19, 2012, 09:48, David Wang, South Hot-Cell, Standard Operation, TM1, LP SIS Nb 6, leak check heat shield circuit
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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, |
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Tuesday, April 24, 2012, 10:38, David Wang, Conditioning Station, Standard Operation, TM1, LP SIS Nb6, TM1 heat shield circuit leak check with Nb5
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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. |
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Friday, May 18, 2012, 08:37, David Wang, South Hot-Cell, Standard Operation, TM4, sic 27, leak check on heat shield circuit
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Chad and I leak checked the heat shield circuit after sic 27 target installed. It took 20minutes to pump down the circuit to the leak
detector bottom scales. The leak detector is calibrated today,and all the vacuum lines and connections are leak checked by spraying helium. Chad sprayed
helium to each vc fittings for 2 seconds. There is no any response on leak detector . The test repeated one time and the result is same. Chad flushed |
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Tuesday, May 22, 2012, 10:00, David Wang, Conditioning Station, Standard Operation, TM4, sic 27, helium pressure test on heat shield circuit
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I did a helium pressure test on heat shield circuit. The leak detector is concected to the TM4 primary vacuum system.The IG1 is 1.1xe-6 torr,PNG4 is
1.5 x E-6torr,and IG4 is 2.1 XE-6torr.leak detector base leak rate:0.0xE-9 atm.cc/sec, base pressure is 0.0x E-4 torr.Applied 80psi helium to heat shield
circuit for 4 mins .There is no any response on leak detector during 4mins time. There is no pressure change during the test time. The heat shield circuit |
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Tuesday, May 22, 2012, 12:36, David Wang, ITE, Standard Operation, TM4, sic 27, TM4 connection in ITE
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| All TM4 connections in ITE is done. The station and TM4 is under roughing now. |
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Tuesday, May 22, 2012, 15:19, David Wang, ITE, Standard Operation, TM4, sic 27, TM4 in ITE under pumping
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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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