 Thursday, June 11, 2020, 11:49, David Wang, ITE, Maintenance, , , ITW and ITE thermocouple status.
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ITW - 2A2
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Friday, February 12, 2021, 07:07, David Wang, ITE, Maintenance, , , ITW and ITE clean up.
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| Vacuum cleaned ITW and ITE station. |
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Monday, April 09, 2018, 06:36, David Wang, ITW, Standard Operation, , , ITW Turbo -pumps switch off
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| I asked MCR to switch off ITW TP3,4 TP1s,2s this morning. |
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Monday, February 03, 2020, 09:10, David Wang, ITW, Standard Operation, TM4, , ITW TPs are switched off. started of ITW argon venting.
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ITW is argon venting now.
Argon venting of ITW is done. It took about 4.0 to 4.5 hours to vent the ITW with 2-3 psi argon. The CG4 and CG4S showed 35 to 36 torr on epic
page when mechanical gauge is 760torr in electrical. Argon gas bottle is closed in electrical room. |
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Tuesday, August 07, 2012, 14:06, David Wang, ITW, Repair, , , ITW TP4S has been replaced
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Friday, June 26, 2020, 15:00, David Wang, ITW, Maintenance, , , ITW TP1 and TP1S.
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ITW TP1 can not be started yesterday. Also, TP1S was difficult to start , and had a high current draw after. We changed both of them in pit today.
TP1 and TP1S are started successfully after replacement. |
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Tuesday, October 23, 2018, 11:32, David Wang, South Hot-Cell, Maintenance, , , ITW RV4S leak check.
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| ITW RV4S (A and B) are leak checked. They are good. |
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Thursday, February 10, 2022, 12:24, David Wang, ITW, Standard Operation, , , ITW HV test without mdoule.
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Carla did the test. and reported the result as following: HV testing of ITW is complete. It was pretty well behaved up to 59.5kV, and sat at
59kV for 30mins with no sparks (that EPICS caught). There was some strange behaviour of the current between 51kV and 53kV - it was jumping by 20uA or
more - but there didn't seem to be any voltage response, and it went away after 53kV (though it returned on the way back down). The test was done in Feb |
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Tuesday, March 07, 2017, 09:25, David Wang, ITW, Repair, , , ITW HALCW 2" return line ball valve seals replacement.
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Leaking seals on ITW HALCW 2" return line ball valve have been replaced. 8 liter waters are drained out for this job. Water are drained into a thick
plastic bag. The bag is tie strapped , labeled, and put into a yellow garbage bin in MAA. Water sample is given to RPG. After analyzing, RPG will
give instruction on how to deal with it. Since we just refilled NALCW to system before this job, the active level on sample is very low. We may dump them |
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Wednesday, August 19, 2020, 10:17, Adam Newsome, South Hot-Cell, Standard Operation, , , ITW Entrance Module moved to SHC
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| ITW Entrance Module was moved from west station to South Hot Cell. |
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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 |
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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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Monday, July 09, 2012, 16:08, David Wang, ITE, Standard Operation, TM4, UO#3, ITM4 in ITE connected and pumping down
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Wednesday, September 12, 2012, 07:00, David Wang, ITE, Standard Operation, TM4, NiO #1, ITM4 in ITE connected and pumping down
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TM4 had been connected in ITE. Six turbo pump had been started . thepumpming diwn is very good so far. The water interlock check on ITE and TM4 had been
finished and everything is good.All water signals are strong and constant by visually checking. |
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Wednesday, April 17, 2024, 11:58, David Wang, ITE/ITW, Maintenance, , , ITH:MP1S pump inside lubricant was changed today.
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ITH:MP1S pump inside lubricant was changed today. old lubricant is dirty with dark color. they are stored in sealed waste oil jug and stored in silo
area. Pump has been installed back and started. It works fine. |
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Friday, October 13, 2023, 11:51, David Wang, ITE/ITW, Maintenance, , , ITH:MP1 is replaced due to its poor performance.
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ITH:MP1 is replaced this morning due to its poor performance started yesterday afternoon. The general field in pit is about 260usv/hr. the contact field
on pump is 2.0 msv/hr. New pump works good. Lubricant in pump will be drained next week. then motor will be removed. The pump body will be bagged and stored
in silo area. |
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Thursday, January 09, 2025, 11:08, David Wang, Facilities, Maintenance, , , ITH:MP1 is deteriorating by watching on ITH:CG1 and CG2 readings
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ITH:MP1 is deteriorating by watching on ITH:CG1 and CG2 readings and investigation in pit. A fault 17644 has been issued. this pump will be replaced
in March when general fielding in vacuum pit is reasonable for the job. |
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Thursday, January 03, 2019, 13:30, David Wang, ITW, Repair, , , ITH:MP1
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ITH:MP1 inlet pressure showed 10torr after power outage during holiday. All ITE/W turbo-pumps were tripped because of it. Removed one shielding block
above the vacuum station. Visually checked oil level and condition in pump. oil level is high. oil color is dark. no oil leak . Installed
a local convectron gauge on pump inlet. After pumping down, It shows pump is good. Tightened all KF 25 and 50 clamps on pump inlet side. Reconnected |
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Wednesday, January 09, 2019, 13:29, David Wang, ITW, Repair, , , ITH:MP1
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ITH: MP1 has been replaced due to its poor performance. Its motor and power cable are taken out and reused on new pump. Vacuum group assembled
them together, and installed the new pump. The new pump works fine. |
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Monday, June 01, 2020, 12:46, David Wang, ITE, Maintenance, , , ITH:CM6 ,CM6S and ITM:CM3 calibration.
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Edi calibrated ITH:CM6, CM6S and ITM:CM3. By the same time, ITH:MP1 and MP2 lubricate oil level are checked. Everything looks fine. No oil
leak on both pumps. |
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