 Thursday, January 10, 2013, 10:40, David Wang, ITW, Maintenance, , , Replaced all high active water system magnetic pedal wheels in ITW and ITE.
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I replaced all high active water system magnetic pedal wheels in ITW and ITE. This is a preventive maintenance job we planned for this winter shut down. |
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Tuesday, January 15, 2013, 10:49, David Wang, ITW, Standard Operation, TM1, no target, TM1 vacuum system connection in ITW
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I connected TM 1 vacuum system in ITW. The TM1 and ITW will be pumped out for shut down routine leak check. |
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Friday, January 18, 2013, 11:17, David Wang, South Hot-Cell, Standard Operation, TM4, dummy target, TM4 heat shield circuit leak check with dummy target on.
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Chad and i did a leak check on TM4 heat shield circuit with installed dummy target at SHC today. The leak detector is pumped to 0.0xE-9atm.cc/sec.Chad sprayed helium twice on each VCR joints .There is no any response had been found on the leak detector during each 45 seconds waiting time. The TM4 heat shield circuit with dummy target is leak tight so far. |
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Thursday, January 24, 2013, 13:30, David Wang, ITW, Standard Operation, TM1, , ITW-TM1 2013 winter shut down leak check.
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2013 winter shut down ITW-TM1 primary vacuum vessel, secondary vacuum vessel, and water lines leak check: connected leak detector to TP2(primary and water lines) and TP4S (secondary). base leak rate 0.0xE-9atm.cc/sec,base pressure 0.0XE-4torr. Sprayed helium to all primary vacuum seal and there is no response on leak detector. Helium pressurized all water lines(except HS) at 70psi ,3mins.Tube heat(+) no response, tube heater(-)1.6xe-9atm.cc/sec, target oven(-)5.8xe-9atm.cc/sec, target oven (+) 6.9xe-9atm.cc/sec, EE 5.7xe-9atm.cc/sec, MSP no response, window 7.5 xe-9atm.cc/sec.All water lines are water leak free. Two leaks had been found on secondary vacuum vessel. One is on exit 1 to tank o-ring (east side, E-N corner). The leak detector got responses from 1.4 to1.7 xe-7 atm.cc/sec scale . The test hadbeen repeated 4-5 times and confirmed the location . The second one is a small leak which is on exit 2 to tank o-ring(east side, close to E-N corner). The leak detector got responses from 1.4 to 1.8xe-8atm.cc/sec scale. The test had been repeated 3 times and confirmed the location. As the present plan. we will replace the exit1 to tank o-ring during this year shut down time. |
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Thursday, February 14, 2013, 09:31, David Wang, ITW, Repair, , , ITH MP1 is replaced.
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Edi and I replaced the broken ITH MP1 in target hall with a new pump. The old pump was leak on oil. There were no oil had been left in the old pump by checking the sight glass.Thats the reason of the pump failure.The tray which the old pump sat on was full of leaking oil ( highly contaminated ). The old pump was bagged in 3 thick plastic bags ,and the tray was cleaned before the new pump was installed. The working area had been cleaned up and surveyed couple of times after the job. Everything is good. The new pump had been tested after the installation. It works fine. |
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Thursday, February 21, 2013, 14:05, David Wang, ITW, Repair, TM1, , Disconnected EXIT1 in ITW.
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Disconnected EXIT1 in ITW. All cables , wires and air lines are label marked. |
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Tuesday, February 26, 2013, 13:53, David Wang, Conditioning Station, Repair, TM4, , Replaced TM4 TP1
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Bevan and I replaced TM4 TP1 today at conditioning station .The pump will be started this week when I do ITE and TM4 leak check . |
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Friday, March 01, 2013, 11:35, David Wang, ITE, Maintenance, TM4, , Leak check on ITE and TM4.
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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. |
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Wednesday, March 06, 2013, 14:12, David Wang, ITW, Repair, , , ITW EXIT1 tank to module o-ring replacement
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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.
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Thursday, March 14, 2013, 07:09, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 electrical test at SHC after windown and containment box back.
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TM4 electrical test at SHC after windown and containment box back is done. Everything is fine. |
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Thursday, March 14, 2013, 07:18, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 window cooling line leak check
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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. |
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Wednesday, March 20, 2013, 08:19, David Wang, Conditioning Station, Repair, TM4, , Leak check new installed TM4 TP1 at conditioning station.
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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. |
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Wednesday, March 27, 2013, 11:49, David Wang, ITE, Standard Operation, TM4, Sic LIS-RFQ , Connected TM4 in ITE
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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. |
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Wednesday, March 27, 2013, 12:08, David Wang, South Hot-Cell, Standard Operation, TM4, Sic LIS-RFQ, TM4 heat shield circuit leak check with SiC LIS-RFQ target
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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. |
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Wednesday, April 03, 2013, 12:26, David Wang, ITE, Maintenance, TM4, Sic LIS/RFQ, Leak check on ITE TM4.
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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. |
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Thursday, April 11, 2013, 07:18, David Wang, Conditioning Station, Maintenance, TM1, Ta#29, helium pressure tested all water lines in TM1 at CS
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On April 08th, all water lines in TM1 had been helium pressure tested(70psi) at conditioning station. No leak had been found. |
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Friday, April 12, 2013, 10:27, David Wang, ITW, Standard Operation, TM1, , I reconnected TM1 to ITW.
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TM1 has been reconnected in ITW. Water interlock check for TM1 is done. |
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Friday, April 12, 2013, 10:32, David Wang, ITW, Repair, TM1, , ITW EXIT1 tank to module o-ring leak check.
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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. |
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Wednesday, April 17, 2013, 10:35, David Wang, ITE, Standard Operation, TM4, , I moved 5 shielding blocks back to ITE.
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5 shielding block had been moved back to ITE. The ITE is configured to take proton beam. |
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Monday, April 22, 2013, 09:33, David Wang, Conditioning Station, Repair, TM3, , Leak check TM3 at conditioning station
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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. |
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