 Tuesday, February 04, 2025, 11:50, Alexander Shkuratoff, ITW, Standard Operation, , , ITW HV bias test without module (Work permit I2025-02-03-2)
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Tuesday, February 04, 2025, 10:15
Started voltage ramp up. Using 250 V increments.
Tuesday, February 04, 2025, 12:07
Current has got a bit noisy, starting at around 56.5 kV.
Currently at 57 kV. Voltage is stable though.
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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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Monday, March 03, 2025, 10:53, David Wang, ITE/ITW, Maintenance, , , ITH:MP1 has been replaced.
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No issues seen on new pump;
ITH:CG2 ~0.008T with ITH:CG1 ~0.001T.I am happy with performance. ITH:MP1 turned back off; ITH:PV1 closed and ITH:SV4 closed after the job.
- Chloe Beaumier-Martin
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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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Thursday, April 05, 2018, 11:29, David Wang, ITW, Maintenance, , , ITH MP1 replacement
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ITH MP1 is replaced today with a new style pump.The new pump is 0.75 inch higher than old pump on inlet and exhaust so a new solid inlet adapter
(KF50-25) has to been used. For future secondary pump ITH MP1S replacement, we need a new adapter 0.75 inches shorter as well. The new pumps
is started . Everything works fine. Old pumps is drained , bagged, and stored in TH B2 level. All radioactive garbage produced during the job are bagged |
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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 |
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Thursday, February 18, 2021, 12:33, David Wang, ITE, Repair, , , ITE:TP1S
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| ITE TP1S new pump is installed today. Reset pump life time on controller to 0 hr. |
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Tuesday, August 23, 2022, 11:33, Carla Babcock, ITE, Repair, , , ITE:ANODE swapped with TCS:ANODE
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ITE:ANODE supply reading strange currents - 17mA with the power supply on and no voltage. Checked anode circuit from electrical room:
Anode wire in electrical room shows 0L at 250V
Circuit with 50kOhm resistor mostly looks good (49-52kOhms) but a couple times read 28kOhms, no idea why. Tried jiggling all cables, unplugging |
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Monday, January 27, 2020, 10:40, David Wang, Cooling, Maintenance, , , ITE/ITW supply water presuure on dump circuits.
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With both stations in operation,ITE dump supply gauge reading is 27 psi. ITW is 20 Psi. I adjusted ITW dump pressure to 25 psi by changing the
return line side pressure relieve valve.
ITE full operation+ ITW no TM: ITE dump pressure 27psi, ITW dump pressure 27psi. |
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Tuesday, January 25, 2022, 08:57, David Wang, ITE/ITW, Standard Operation, , , ITE/ITW have been cleaned with vacuum canister.
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ITE/ITW are cleaned with vacuum canister. HV cage inside and blue nylon insulators are wiped. Garbage inside the pits are cleaned out.
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