Wires for TM#2 steering elements, and png gauge have been run down to the containment box level. Chad has placed them in the little cable trays. Slack has been pulled back. and termination of the wire will be done on the 7th of May. A modification was done to the signal line of the png gauge wire ultem block, as grounded screw was inserted to allow for strain relief so the end would hopefully quit breaking. See attached pictures for the details.

Wires in TM#2 have been terminated at the top of the module.

 Maico removed the containment box today allow Travis and I to further test the wiring harness. I disconnected the junction block and Travis and I repeated the test from yesterday. The all lines except the PNG tested OL. The module was then lowered and the twisted pair connected to the pin that corresponds to the steerer labeled BTM (it is likely this is not labeled correctly). This testing showed showed that the source of the short found yesterday is in the wiring harness or the source tray. The PNG gauge was then tested again. When beeping out the harness to find the location of the pin it was found that the short had gone away. This circuit was then tested with the megger at 500V and showed OL. Don Jackson has suggested looking at the SHV feed through. It is difficult to determine where the source of the problem is as it is intermittent. The source tray side wiring harness for the steerers was then disconnected from the steerers and tested to OL. Finally the connections on the source tray were tested. It was determined that the third socket down (see attached picture) has a short somewhere to ground. When Chad returns on Friday I will have him complete a visual inspection and if the source can be found we may be able to deflect the line. Failing that to repair this connection a new steerer cone assembly will need to be installed.

The 2A3 window now has a lid, and lift yolk on it and it has been installed in the spent target vault in spot 2A. The lid is a normal unmodified and has no sealant on it.

Travis Cave wrote:

The 2A3 window now has a lid, and lift yolk on it and it has been installed in the spent target vault in spot 2A. The lid is a normal unmodified and has no sealant on it.

The pail containing window was transferred from the Storage Vault to the Cyclotron Vault Tunnel Storage 2017 Mar 24. It was placed in a brick bunker along the north wall and marked with item #1434. RPG storage form is attached.

Highest field measured at 0.5 m was 3000 uSv/h with an estimate of 4000 uSv/h on contact with the pail. Pail exterior was not contaminated. See attached storage form for details.

 

The south hot cell window has been found to be leaking oil. Upon inspection yesterday I found that the bolts compressing the gasket on the cold side were "loose". I have re-torqued them to the specification provided by the manufacturer in the attached procedure.

The tray with window waterline loop and EF Shield has been installed into TM4.

Entered the hot cell to perform final decon on the window. Initial swipes this morning were 11000 c.p.m. on 44-2. After decon approximately 100 counts.

West entrance module - visible broken or disconnected wire visible on old/existing wire scanner. Wire scanner removed, new one installed.

The West Entrance Module has been moved to the South Hot Cell for repair.

The West Entrance Module has been moved from the South Hot Cell to the West Target Station.

The west 'Z' motion cable on the east manipulator has successfully been replaced. The job took slightly less than an hour (including inspection of the scissor table hoses) and I received 0.075mSv. Scissor table hoses appear to be fine and also didn't "shed" or flake at all when checked by hand.

 The water pumps for the conditioning station were turned on at ~11:45. It took longer to start the conditioning station as the air from the leak test had to be bled off and the make up water tank refilled. The valves on the water supply line were closed slightly to make up for the fact the water cooled power supply has been removed. DIF2 was installed by Maico so we can measure the flow in the primary side.

Yesterday a leak was discovered in the ISAC-I experimental hall. The leak appears to be at the connection between the evaporator and the return water line. 1 in of water was lost from TCS:TK1. The water is currently valved off to prevent further leakage.

A fault reportt has been submitted to mechanical services - awaiting response.

Friday, November 01, 2019

Leak repaired by Mechanical Services. A brass fitting had cracked and was replaced with a galvanized fitting.

Link to e-log,

Link to efault

Tank level down from 76 to 55 in on TK1

Valve replaced by Curtis today

Anders Mjos wrote:

The level dropped below 15 in over the weekend. MP2 stopped, but MP3 condtinued pumping.

 e-fault submitted and Niel Wong has been contacted.

Niel Wong came and had a look at the system. We decided to close the circuit as the water is no longer used with the new power supplies. The circuit will be monitored, but not repaired unless it is needed again.

After trials with 2000 grid wet paper I have moved up to "red" scotch brite. This seems to have worked the best so far although it took two minutes to remove the ring that the other materials could not remove (see picture).

I have moved to next circuit. Currently at 3 minutes and 30 seconds with scotch brite but significant ring remains.

module side water block jig has been removed in preparation for electrical checks.

Stage 1 polishing (water scale and at least 99% of visual indium removed) has been achieved on all 2 seal water blocks that will be used (Ground electrode has not been polished). Process required 3-4 3minute cycles of the tool using scotch brite pads with the tool running at approximately 75 psi.

Stage 1 polish has been achieved on all single seal water blocks using the single pad tool run at 75 psi, 2 3 minute cycles per block using red scotch brite.