 Tuesday, July 07, 2015, 12:12, David Wang, Conditioning Station, Repair, , , CS TP1S replacement
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| CS TP1S had been replaced with a new TP-301 pump this morning.The old pump was broken last week. |
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Wednesday, July 08, 2015, 14:05, David Wang, South Hot-Cell, Repair, TM2, , leak check coil line(R,U) on TM2 at SHC
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Chad and I leak checked coil line(R,U) on TM2 at SHC yesterday. The leak detector was pumped down to 0.0Xe-9 atm.cc/sec before the check. Chad sprayed
helium on the soldering joints connecting the cooling copper lines to the small holding blocks for the coil terminal(R,U). After sprayed helium 2
seconds, I saw the leak rate on LD started to climbed up. The highest leak rate is 4.0xE-8 atm.cc/sec. It is a very positive response. We waited the leak |
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Wednesday, July 08, 2015, 14:24, David Wang, South Hot-Cell, Repair, TM2, , TM2 pressure bubble test on RU water blocks.
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July-06, 2015. Chad , Grant and I did the bubble test on R,U water blocks. We suspected the leak on the R,U circuit is from C seals on the water blocks
so we did this test first. I applied both air and helium to R,U circuit , Chad applied snoop soap on the R,U water blocks.The air and helium pressure was
increased from 40 psi to 90 psi Max step by step.Chad did not see any bubbles on the water blocks during the test. Since we did not find the leak source, |
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Thursday, July 09, 2015, 14:02, David Wang, Conditioning Station, Development, TM1, , TM1 is pumping down at CS
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TM1 and CS vacuum system are connected. All turbo-pumps are started. The new TP1S works fine also. The pumping down looks good so far. During the
TM1 and CS roughing down time, Joe .M noticed a Rn-220 level surge up in TH . Then,the Rn220 level slowly dropped back. Anders suspected this Rn-220
surging is related to the TM1 roughing down at CS. We decided we will stop the pumps , vent the CS , and roughing again tomorrow. During the same |
Wednesday, July 15, 2015, 11:18, David Wang, South Hot-Cell, Repair, TM2, , leak check coil line(R,U) on TM2 at SHC 
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Chad and I leak checked the coil 1 circuit(R,U) after rebuilt coil line is installed on TM2 source tray. The pumping down on the circuit is very quick
and smooth. The LD base lake rate 0.0xE-9 atm.cc/sec. Base pressure0.0xE-4 torr.
Chad sprayed lots helium on the R( coil 1+)and U(coil 1 -) water blocks. During 1 minute waiting time, there is no any response on LD. The |
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Thursday, July 16, 2015, 07:38, David Wang, ITE, Standard Operation, , , Target Hall Scheduled Activities April 07 - August 07 2015
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Update the TH schedule according to present TM2 refurbishment process. See attachments 1,2
2015-07-20 , Update the TH schedule after some changes on TM2 and TM4 arrangement. See attachments 3,4 |
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Tuesday, July 21, 2015, 12:29, David Wang, ITE, Maintenance, , , target pit Hepa filter
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Target pit Hepa filter has been replaced today. There is 500 counts on swipe which is taken inside of the replaced filter. The field measurement on the
filter wood box is less than 0.5 usv/hr on contact. Right now,The outlets of the old filter are sealed with thick plastic and duct tape. The whole
filter is wrapped with plastic sheet and tape. It has been moved to SHC ante room. It will be moved out of there by Tony.N soon with RPG help. |
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Tuesday, July 21, 2015, 12:38, David Wang, ITW, Repair, , , ITW external water leak on dump circuit has been fixed.
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| The leaking 1/8 NPT(M)-1/4NPT(F) adapter on the ITW dump circuit is replaced. |
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Thursday, July 23, 2015, 10:23, David Wang, ITE, Standard Operation, , , Target Hall Scheduled Activities April 07 - August 019 2015
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| Update Target Hall schedule after the changing on TM2 process. See attachment 1,2 |
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Friday, July 24, 2015, 10:04, David Wang, ITE, Standard Operation, , , 5 Shielding blocks have been moved from ITE to block storage area.
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| Dan and I moved 5 shielding blocks from ITE to block storage area. The move is smooth. |
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Monday, July 27, 2015, 15:34, David Wang, ITE, Standard Operation, TM4, , Leak check on TM4 HS water line with new UCX target. at SHC
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Chad and I leak checked the HS line at SHC after UCX target installation. On first round helium spray, one of VCR fitting has a leak to E-6 atm.cc/sec
range. Chad tightened the fitting, and solved the problem. We leak checked both VCR fittings twice. No leak. The line will be helium pressured at CS tomorrow. |
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Monday, July 27, 2015, 15:46, David Wang, South Hot-Cell, Standard Operation, , , The yellow steel plug is put on SHC in TH
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The yellow steel plug is put on SHC in TH. The spent target is inside the SHC.The field around the SHC area in TH is so high that we have put it on.
It will be moved out on this Thursday just before the spent target move. |
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Monday, July 27, 2015, 17:03, David Wang, Conditioning Station, Standard Operation, TM4, UCx 13, UCx13 and TM4 under vacuum at CS.
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I connected the CS vacuum system to TM4. The CS and TM4 turbo pumps are started. Everything is good so far. The HS line will be pressured
with helium tomorrow for leak checking. The CS and TM4 will be vented with Argon on Wednesday morning as planned before moved to ITE. |
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Tuesday, July 28, 2015, 10:12, David Wang, Conditioning Station, Standard Operation, TM4, UCx 13, Helium pressure test on TM4 HS line at CS
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I did the helium pressure test on TM4 HS line at CS. Applied 70 psi helium 2 minutes. base leak rate0.0x E-9 atm.cc/sec. No response during
the test. No leak. |
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Tuesday, July 28, 2015, 10:17, David Wang, ITE, Repair, , , ITE TP4 has been replaced
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Tony and I replaced the ITE TP4 turbo pump today. The pumping time on controller has been reset to 0. The replaced broken pump is bagged and stored
at west end of TH. |
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Wednesday, July 29, 2015, 06:24, David Wang, Conditioning Station, Standard Operation, TM4, UCx 13, Stopped the CS and TM4 pumps and vent with argon.
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| Dan and I stopped the CS and TM4 pumps. We are venting the CS with argon for UCX13 target. |
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Wednesday, July 29, 2015, 10:14, David Wang, ITE, Standard Operation, TM4, , TM4 has been connected in ITE
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| Dan and I connected TM4 in ITE. We checked all water signals on ITE cooling circuits. Everything is good. |
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Friday, July 31, 2015, 09:47, David Wang, ITE, Standard Operation, , , Target Hall Scheduled Activities April 07 - August 019 2015
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| Weekly update of Target Hall schedule after so many jobs have been finished in this week. See attachment 1, 2 |
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Friday, August 07, 2015, 10:01, David Wang, ITE, Standard Operation, , , Target Hall Scheduled Activities April 07 - August 19 2015
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Weekly update target hall schedule and activities. See attachment 1,2
Update and extend Target Hall schedule to Sep 08. See attachment 3,4 |
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Thursday, August 13, 2015, 17:17, David Wang, Conditioning Station, Repair, TM2, Dummy target, TM2 at CS
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TM2 has been moved to CS. All turbo-pumps have been started. The pumping down is good so far. I connected the leak detector to service cap, and
finished the leak check today. The LD base LR:0.0Xe-9atm.cc/sec. 80psi helium were applied to coil1, coil 2. HS and window circuits, each for 2minutes.
No any response has been found on LD. So all water lines are leak tight now. I also sprayed helium to top service cap checking all air to |
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