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.

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. 

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.

Friday, January 19, 2024, 10:19

This is a belated entry.  The regeneration was performed successfully on December 20th, 2023. 

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

 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, 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.

Ultrasonicator in Cold Lab:  The ultrasonicator cooling lines and their operation was checked.  The functionality of the probe and operation software was checked.  Visual inspection of probes and water receptacle showed good operational condition. 

Tuesday, October 15, 2024, 09:22

The glovebox catalyst was regenerated.  No issues.  Removed TCE and PVB from inside the glovebox.  These were vestiges from the previous UCx production process.

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."

John Wong wrote:

The evaporator#1 glovebox is leaking from the gloves, around the ports, and the base (possible more places).  It is evident that there were holes on the gloves.  When the glovebox is purged with Ar gas, one can feel that the gas is blown out from the base.   Solutions: New gloves are ordered from RENCO Co. (PO#TR189708).  New seals & glove port rings have been implemented.  More need to be done...

 See Evaporator_1 log entry

 Please see attached file for notes on the water leak from the cold lab fume hood Tuesday Feb 21.

ISAC operations called to check that equipment in the labs were OK for the non active water to be off for a short time. I gave the OK after having checked that both evaporators are off. The system will be bled for air.

Checked in on the labs and other equipment yesterday. Everything looks ok, including the glove box Ar supply. Recorded O2 and H2O values in the log book.

Anders Mjos wrote:

Checked in on the labs and other equipment yesterday. Everything looks ok, including the glove box Ar supply. Recorded O2 and H2O values in the log book.

 Checked in on labs again on Wednesday April 22nd. See attached for glove box details

A regeneration of the Ar Glove box had been performed Monday, 04, Feb, 2019. At some point during the night of the 4/5, a leak of volatile materials burst out of the vent line inside the control box housing the fuses, solenoid valves, & electrical components. The volatile liquid, determined to likely contain Trichloroethylene, ate through the plug holding one of the 250 V 4A fuses. The plug then shorted to the glove box itself and the glove box main touch screen & controls completely shut off. The H2O & O2 monitors still worked, however we were unable to allow any Ar back into the box. A noticeable electrical / burning smell was found in the morning of the 5th and the cover removed. A highly irritating chemical smell was also found and respirators were then put to use.

A work permit (I2019-02-05-3) was opened for the cleanup & inspection of the fuses and electrical components. Darwin & I spent the afternoon of the 5th to cleanup the volatile liquid. It was determined that the glove box was temporarily ok as it was still maintaining a low oxygen atmosphere (below 200 ppm)

On the sixth we changed out the melted fuse plug and replaced the fuse however the Ar glove box did not respond in kind. 

Thursday, February 07, 2019, 08:00: Contacted Randy Boehm. He determined the lines were still alive, including the small control box and 4 fuse plugs. We changed two of the 10A fuses and cleaned the plugs. The touchscreen came back.

Thursday, February 07, 2019, 09:15: Contacted Darwin. Initially the Ar glove box did not purge and the solenoid valves did not respond, however 10A Fuse #F1 & 4A Fuse #F3 just needed to be seated properly. 

The glove box was able to be purged & made stable.

The source of the main volatile leak has not yet been determined completely (Thursday, February 07, 2019, 11:25) however it will be investigated this afternoon. 

In the meantime do not use the Ar Glove box 'Regeneration' function.

Friday, February 08, 2019: The source of the leak was determined to be the vent line leading out from the last solenoid in the control box and out to the regeneration purge /  vent outlet. It has a pin hole leak mid-line and a clear 'burst' from the fitting leading into the solenoid valve. Another noteworthy issue was found. The regeneration purge / vent outlet leads directly out into the hot lab atmosphere. During any regeneration, a small amount of TCE & material is released from the argon glove box.

A non-conformance is issued (NCR 12029) and a work permit plan is being setup. 

The line main vent line is to be replaced with lengths of 3/8" x 0.040" wt SS tubing and the regen purge/vent outlet re-linked to the nuclear ventilation. RPG has issued P100 Organic vapor / Acid gas cartridges for use in the repair.

Will update with the upcoming work permit*

The Ar glove box issues ( https://elog.triumf.ca/TIS/General/23 ) have been fixed.

Quoted from work permit: I2019-03-19-4

RPG checked the old SS lines. They were clear of contamination although still contained TCE. The TCE was cleaned out & removed.

The Ar glove box is connected properly to the nuclear ventilation as well as having the added filter / catch. The SS lines were replaced & valves cleaned. A large clog was found in the vent line and has been removed. Will now be able to test the regeneration function of the glove box.

-A regeneration should be performed monitored to test the lines for the glove box to be officially fixed.

The blockage was found on the exit of the Ar Glove Box. The blockage was held within a Swagelok check valve (P/N - B4CP2-1/3 - https://www.swagelok.com/en/catalog/Product/Detail?part=B-4CP2-1/3). It may have been installed intentionally, it may have been assumed to be a 1/4" brass pipe nipple. At any rate it was completely plugged and

did not allow for proper venting of the regeneration lines. Pictures of the blocked valve are included. The regeneration function is ready to be tested.

 Wednesday, April 24, 2019, 10:00:

The sink to the rear of the cold lab beneath the paper towel dispenser has sprung a leak. The leak is most apparent when the hot water tap is used. It appears right at the back, behind the sink basin where the pipes meet the counter top to faucet.

Entered under fault report 12204 

Currently 'Tagged' with bags over the handles to discourage use..

Thursday, July 04, 2019, 14:12

Fixed (Darwin)

Purchased o-rings and fixed in May 2019