Thursday, January 20, 2022, 13:38, Carla Babcock, , , Testing of spare FUG bias supply
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Tomislav and John Chow tested the spare bias supply located in the rack of the electrical services room. This is a FUG HCN 1400 M-60000, serial 11590-01-01, PO TR131986 but when it was installed online we found it could not go above about 40kV. It was replaced but not tested until now. Tomislav says:
"We started testing the FuG this morning, in manual mode it is possible to reach 60 kV, 59.75 according to the display and with the load we have 1.6 mA. From the DC HV point of view, at least in manual mode no problem.
When we looked at the HV through a 1000:1 voltage divider in the oscilloscope there is a situation, the coupling in graphs 4 and 5, attached, is AC, and it was taken at 55 kV. The 200 mV scale represents 200 V because of the divider. There is a strong noise of 200 Vpp at 55 kV, it can be interpreted as ripple of 0.36%, we usually ask in FuGs 10-5 or 0.001%. Also there are random peaks of 1 V in the divider (1000V in the output) that indicate a possible failure of the PWM circuit that generates the high voltage.
Because of issues like these Friedhelm replaced the old ITW power supply, these instabilities caused problems in the experiments, so I am not sure if it is necessary to continue testing this PS. We can only do a remote test that I do not expect to give different results from what we have now, maybe we will find an issue and it does not go beyond 40 kV, and we can check long term stability, the DC value should remain very constant for at least 8 hrs." |
Thursday, April 07, 2022, 12:00, Aaron Schmidt, Under Process, , Ar Glove box issue & LaC removal.
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Thursday, April 07, 2022, 11:55:
It was noticed on Wednesday that the glove box was not regulating pressure properly & the H2O sensor was reading (Very unstable) anywhere from 30 ppm to 0.25%. The box was isolated & checked for leaks. Unable to vent properly except manually.
One of the solenoid valves for venting the glove box fails to open. Will need replacement. The filter also appears to be saturated. Regeneration is required once the solenoid valve is replaced. Prior to replacing the valves, the LaC must be safely removed. This process is being initiated. (John W. & Darwin O.) |
Thursday, April 07, 2022, 12:21, Aaron Schmidt, Fixed, , Ar glove box roughing pump.
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Thursday, April 07, 2022, 12:00: While preparing to remove LaC, the roughing pump (1) stopped operating. It didn't appear to seize, just no longer powered up. Multiple outlets attempted. Vacuum group contacted & they brought us a replacement.
Thursday, April 07, 2022, 12:21: Pump was replaced. (Pump 2).
Friday, April 22, 2022, 11:30: The roughing pump failed (Pump 2) & shut-off. Appears to have seized. Oil?
Was replaced by Vacuum Group in the afternoon with 3rd pump.
Monday, April 25, 2022, 09:13: Roughing pump failed & shut-off. (Pump 3). The oil was completely drawn out of it & into the ventilation line (To EF14).
Fault: 14843
Friday, June 01, 2022, 12:00: RP changed with a new IDP15 roughing pump. Fixed. |
Tuesday, July 12, 2022, 11:08, Aaron Schmidt, , , Q2 - 2022 Ball Mill Calibration & Inspection
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Fritsch Pulverisette 5 Ball Mill status:
Tuesday, July 12, 2022, 11:06:
SN 05.6010 / 03005: Inspected. Ok
SN 05.6000 / 00365: Currently disassembled / out of service. (Under Process status until repaired, re-assembled, inspected, & tested) |
Friday, December 16, 2022, 07:36, Aaron Schmidt, , , Q4 - 2022 Ball Mill Calibration & Inspection
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Fritsch Pulverisette 5 Ball Mill status:
Friday, December 16, 2022, 07:35
SN 05.6010 / 03005: Inspected. Ok
SN 05.6000 / 00365: Currently disassembled / out of service. (Under Process status until repaired, re-assembled, inspected, & tested) |
Thursday, February 02, 2023, 10:30, Aaron Schmidt, , , Eyewash & Shower Station OK
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Thursday, February 02, 2023, 10:14: Cold Lab Eyewash & shower station ran. Ok. |
Tuesday, June 20, 2023, 15:11, Darwin Ortiz Rosales, Fixed, , Inspection ISAC 1 B1 L06 Glovebox
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On Monday June 19th, the Glove box was inspected. Gas lines, solenoids, pump, argon usage, state of gloves and gas levels were checked.
The only note is that we have one pair of spare gloves for the glove box and we don't have a spare for the Evap1 glove box. We will try to order spare for the Evap1 glove box. |
Friday, June 30, 2023, 12:21, Aaron Schmidt, , , Q2 - 2023 Ball Mill Calibration & Inspection
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Fritsch Pulverisette 5 Ball Mill status:
Friday, June 30, 2023, 12:20:
SN 05.6010 / 03005: Inspected. Ok
SN 05.6000 / 00365: Currently disassembled / out of service. (Under Process status until repaired, re-assembled, inspected, & tested) |
Tuesday, August 01, 2023, 12:31, Darwin Ortiz Rosales, , , Evap1 and Evap2 Inspection and Maintenance
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Evap1: Cleaned and checked seals. Oil level could not be clearly determined, but are consulting with pump group to check.
Evap2: Cleaned and checked seals. |
Thursday, November 30, 2023, 10:03, Aaron Schmidt, Fixed, , Ar Glove box - Blower / solenoid fix
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On November 10th / 11th a site wide power outage occured. Once power was restored, the Ar glove box had intermittent issues with the solenoids & blower. The blower did not start & the solenoids often got stuck or ceased operating.
Yesterday Randy B inspected the connections to see if they were receiving enough power. It was good from the main plug-in, through to the PLC, however was dead at fuse positions 3 & 4 on the rear panel. Both fuses were changed, but that did not help. We did some fidgeting in the back & the solenoid function returned. It was left overnight.
Thursday, November 30, 2023, 08:30: <- Approx. Initial check: Dropped a crumpled Kimwipe inside the glove box to check for air flow / blower function. It did not move. Blower was not functioning, but the solenoids did. De-energized the glove box completely.
Removed the old corroded fuse holders, added a pair of modified new ones. Cleaned a couple of corroded critical connections. Installed the new fuses, re-plugged it back in. Function returned to normal. The Kimwipe was also moving, verifying the blower is again operational.
Thursday, November 30, 2023, 09:51: Complete. |
Tuesday, December 12, 2023, 13:12, Aaron Schmidt, , , Q4 - 2023 Ball Mill Calibration & Inspection
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Fritsch Pulverisette 5 Ball Mill status:
Tuesday, December 12, 2023, 13:11:
SN 05.6010 / 03005: Inspected. Ok
SN 05.6000 / 00365: Currently disassembled / out of service. (Under Process status until repaired, re-assembled, inspected, & tested) |
Friday, January 19, 2024, 10:18, Darwin Ortiz Rosales, Fixed, , Inspection of Glovebox inside B1 L06 (hotlab)
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Friday, January 19, 2024, 10:10
This is a belated entry. The inspection was performed on December 19, 2023. A leak on one of the lines from the regulator (regeneration gas) was fixed. No other issues were found.
All lines, pump, blower, were found in working condition.
A regeneration can proceed.
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Friday, January 19, 2024, 10:20, Darwin Ortiz Rosales, Fixed, , Glovebox regeneration (B1 L06, Hotlab)
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Friday, January 19, 2024, 10:19
This is a belated entry. The regeneration was performed successfully on December 20th, 2023. |
Friday, February 09, 2024, 11:01, Aaron Schmidt, , , Laser cutter inspection
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Friday, February 09, 2024, 11:01: Epilog laser cutter operates. OK |
Tuesday, March 12, 2024, 15:21, Darwin Ortiz Rosales, Fixed, , Glovebox regeneration and O2 sensor replacement(B1 L06, Hotlab)
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Tuesday, March 12, 2024, 15:21
Hotlab ISAC1 B1
I performed a regeneration of the glovebox catalyst. I also swapped the O2 sensor as the old one had outlived its useful life. The glovebox will be reestablishing equilibrium for a day or two. Please do not panic if you see high moisture or O2 values, all is good. Thanks,
Darwin |
Wednesday, March 27, 2024, 13:42, Keyur Chauhan, , , Actinide Mass Balance Calibration ISAC-I B1 Hot Lab
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ISAC-1 B1 Hot Lab actinide mass balance calibration was carried out on March 27, 2024, at 11:10 a.m. with an accuracy of 0.00%. |
Monday, April 15, 2024, 10:52, Aaron Schmidt, Fixed, , Ar Glove box RP swapped.
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Monday, April 15, 2024, 10:50: The old IDP15 RP was not pumping the antechamber down properly. An exchange IDP15 pump is loaned to us from vacuum group. Once the tip seals on it are replaced, we will swap it again.
Applicable work permit: I2024-04-12--2. Status: Returned. |
Thursday, June 20, 2024, 13:33, Darwin Ortiz Rosales, Fixed, , Glovebox inspection ISAC1 B1 L06
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Thursday, June 20, 2024, 13:28
All lines, pump, blower, were found in working condition. From a previous issue with corrosion of lines connecting pumps, it is recommended that we check the ability of the pump to achieve full vacuum during inspections. Currently full vacuum was observed while checking.
The nipple connecting the argon gas tank to the regulator needs replacing. Aaron will order it. |
Thursday, July 11, 2024, 13:40, Aaron Schmidt, , , Q2 - 2024 Ball Mill Calibration & Inspection
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Fritsch Pulverisette 5 Ball Mill status:
Thursday, July 11, 2024, 13:39:
SN 05.6010 / 03005: Inspected. Ok. Was dirty inside. Cleaned.
SN 05.6000 / 00365: Currently disassembled / out of service. (Under Process status until repaired, re-assembled, inspected, & tested) |
Thursday, August 01, 2024, 15:01, Darwin Ortiz Rosales, , , EVAP1 and EVAP2 Inspection and Maintenance
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Thursday, August 01, 2024, 14:56
EVAP1: Checked seal and no visible deterioration was observed. Oil level in roughing pump was good. Circulated argon to observe functionality of the gloves and to check appropriate gas flow.
EVAP2: Visually inspected the connections at the back of the evaporator. A loose connection had been observed on the previous day but fixed. Roughing pump running well and system operational. The door seal could not be checked but it is working properly as evidenced by the fact that the evaporator was in use. No major maintenance required at this moment. |
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