 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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Wednesday, June 06, 2012, 14:33, David Wang, South Hot-Cell, Standard Operation, TM1, Ta38, leak check heat shield circuit
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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 |
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Friday, June 08, 2012, 11:07, David Wang, Conditioning Station, Standard Operation, TM1, Ta38, conditioning staion and TM1 is under TP1 and TP2 pumping now.
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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. |
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Monday, June 11, 2012, 14:41, David Wang, Conditioning Station, Standard Operation, TM1, Ta38, Heat shield helium pressure test
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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. |
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Tuesday, June 19, 2012, 16:18, David Wang, ITW, Standard Operation, TM1, Ta38, TM1connected in ITW
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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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