Tue Jun 21 16:30:48 2011: 

Re-Cap:  On June 13, 2011, the milling jar gasket seal partially came out during the high speed milling (400RPM), and the ball mill was contaminated with UO2/C mixture (See TIS/Target Production message ID#9, UCx#2, for more details).

Today, the ball mill was successfully re-commissioned.  RPG's helped to take some air samples during the commissioning, and nothing above the background was detected.  The cold-lab is now re-open back; no booties are required.  The commissioning plan and commissioning report are available on DocuShare. 

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.

 Wednesday, January 31, 2018, 13:31

3 x lab safety mirrors have been installed in the hot lab, now all locations in the lab are visible from the door.

First mirrow in 1st photo allows visibility behind evap1; second and third mirrors in 2nd photo shows visibility between glove box and evap2, as well as visibility behind evap2

 Monday, January 13, 2020, 10:30: Leak noted in HC area by Chad to ISAC Ops.

Monday, January 13, 2020, 13:32: The water leak was found to be coming from the sinks in the ISAC B1 Cold Lab. Target cleaning was occurring at the time as well. Soap / detergent smell was noted in the water that had dripped down to the area in front of the South Hot Cell in ISAC B2.

Rob Shanks entered a fault report. 

Running the main cold lab tap or the fume hood tap did not yield a leak, however, dumping a large quantity of water into the 2 main sinks in the ISAC B1 cold lab causes the leak to become apparent. It's likely the large volume of water causes a brief back flow in the pipe in ISAC B2 which then leaks until the flow recovers.

The pipe joint with the leak has been circled in the attached photo. 

Anders & I both witnessed the leak to confirm the source. 

 Friday, February 09, 2024, 11:01: Epilog laser cutter operates. OK

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

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.

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.

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.

Tue Apr 12 12:00:52 2011:  The hot lab glove box regeneration was started yesterday (April 11, 2011).  "Before regeneration, the O2 level was 97 ppm, The H2O level was 47 ppm. After restarting circulation through the dry train, the levels immediately started dropping. At 11:30 today, the O2 was @ 1.76 ppm, the H2O @ 11.2 ppm." (Marik). 

Wednesday, August 05, 2020, 19:34

On Friday July 31 a regeneration of the glovebox was started.

Initial 02 = 130 ppm

Initial H20= 1.9 ppm

The Argon gas level was 1200 psi

The regeneration was finished on August 01, 2020. 

The 02 level (not accurate as stated in the manual) was p 137 ppm.

The H20 level was 8.9 ppm and not considered accurate as the system needs time to reach equilibrium.

The final 02 level was 7.0 ppm and recorded on August 05, 2020.  The final moisture levels were recorded to be 1.9 ppm.

The regeneration was successful and it was concluded that the catalyst is active enough so that it does not need to be replaced.

 Thursday, August 06, 2020, 15:47

02 = 6.75 ppm

H20 = 1.9 ppm

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

Friday, January 19, 2024, 10:19

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

 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.  

 Friday, April 06, 2018, 16:21

Over the long weekend ~1000psi was used up, indicating a leak somewhere in the glove box. 

Tests over the past few days showed ~150psi leaked in 48hrs.

Tested both transfer chambers for leaks, both chambers held pressure fine/ no leaks detected.

Checked all the gloves for leaks and found a ~1mm size hole on the index finger of the right glove closest to the control box.

See photos attached.

Has been sealed off temporarily with duck tape.

Will replace glove after the weekend.

 Tuesday, April 10, 2018, 06:45: Work permit for glove(s) replacement, I2018-04-09--4 submitted yesterday. Current status: Pending. -Aaron S.

 Tuesday, August 08, 2017, 14:28

Alarm for glove box went off this afternoon.

1person went to put arms in and alarm sounded.

Ar good = ~900psi

H2O/ O2 levels fine.

Gloves stuck out straight, but when touched very clear the pressure was low inside box.

Touch screen said ~"pressure exceeded +/-10" pressure"

Increased amount of Ar going into glove box by a small amount.

Ar going into/out of glove box ceased while alarm going off.

Pressed continue to reset and glove box went back to normal...

 Thursday, February 02, 2023, 10:14: Cold Lab Eyewash & shower station ran. Ok.

 Temp was noted to be high @ 50 deg C.

Adjusted the regulators to 35 deg C. Ran both the eye-wash station & shower. Waited 20 minutes. Ran them again and tuned.

Monday, July 13, 2020, 10:00: Complete. 

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...