Anders Mjos wrote:

TCS:WPV1 does not open when staging is enabled. Multiple attempts have been made, but the valve remains closed.

 Dave Morris looked at the PLC controls and found that the code was not writing to the output after the PLC migration. He corrected it.

We loaded UCx #29 , SiC #38  , Ta#53, Ta#56 ,and Ta#57 from mini storage  into F308 flasks.  Later, the flasks are transferred from TH to B2 HC service area. In TH, Working area and Mini storage are cleaned and surveyed.  Tools are cleaned and surveyed as well. No contamination.   Mini- storage is empty now.

Five shielding blocks are transferred to ITW

The ITW is configured to take proton beam.

Five pails were transferred from main vault to mini vault. Note that there was already one pail in the mini vault, so at present there are six pails staged for packaging into F-308s.

Nb#10, Pail 295, Tray 4A
C#4, Pail 277, Tray 4C
Ta#64, Pail 273, Tray 5C
Ta#62 with wire scanner, Pail 256, Tray 7A
TiC#5, Pail 279, Tray 3A

The target index has been updated accordingly (see attached but note that the summary does not reflect the sixth pail).

Ramping up TM4 with new source tray in. Current condition: new source tray but no water running in lines B, D or window. Multipin on the source tray grounded but no lines running into the service tray. Vacuum at 1e-6T.

Small sparks at each BIAS voltage increase starting at 30kV. First real spark around 38kV.

Going up in more than 100V steps causes spikes that take out TP2.

Monday, July 08, 2019, 14:54 : TP2 sparked off at BIAS/EZL = 44kV/25.1kV after 10mins at this point... will leave it here for a couple hours

Monday, July 08, 2019, 16:44 : 6 sparks in last 2hrs, some very strange vacuum response in which the pressure rose steadily and stayed high for 30mins before coming back to normal.

Monday, July 08, 2019, 17:25 : After 30mins at 45kV, started sparking, so will ramp down to 40kV and leave it overnight

By Curtis. See Work Permit I2021-03-24-1 for details.

Filters were replaced by Curtis von Cube on March 5th. See work permit for details I2020-03-05-5

Five F-308s have been filled with the spent targets. The F-308s have been moved to the hall way between the north and south hot cell areas.

The shield door has been opened and fields measured at 77 uSv/h on contact at the AL. panel.

 Field measurements were taken of the old source trays. The old TM#2 source tray had a minimum field value of 0.50 mSv/hr and a maximum of 1.18 mSv/hr through 360 deg of rotation. The box was rotated around three times and put back in the vault. TM#1 old source tray was also removed and measured as well the field values for it were a minimum of 0.52 mSv/hr and a maximum of 1.15 mSv/hr through 360 deg of rotation. The box was rotated around three times and placed back in the vault. In both cases the box was roughly one metre from the radiation monitor.   

The old resin tank has been stored in silo since last year March.  Without crane the tank up, We use the pole monitor measured the field around the bottom of the tank in silo. The average contact field on the bottom is about 4.0msv/hr. @0.5meter , the field is about  900usv/hr. It is still too hot to remove it.

I have managed to reduce the field at the broken manipulator from 12 mSv/h to 400 uSv/h.

After removing the previously found extraction electrode and other suspect components the field at the manipulator tongs (in front of the window) in still 3mSv\h.

I have been through every bin etc in the hc and even emptied the dust seperator canister of the vacuum. I will use the camera to look under the table and inside the vacuum cleaner itself...these are really the only possibilities left.

Fiberglass, capton tape and tie straps have been removed from TM3.

Feibiad gas line for ITE and its adapter fittings for TM2 are tested today by installing them on a dummy water stem. No leak on VCO fitting, adapter o-rings, and all Swagelock fittings of this assembly. Manual valve on gas line works fine.  The positional check on gas line between TM2 and ITW will be fulfilled next Tuesday during module disconnection. 

 This morning when I went to start HV conditioning CP2 and CP3 both had faults and the temperature of the water was ~27C. I reset the compressors by flipping the system reset switch. This cleared the fault and allowed the compressors to come one. To the best of my knowledge these faults happen as a result of compressor fluid pressure too low or high and temperature too low or high and lack of flow. The system cannot determine which one it was that caused the trip. The system restarted and faulted again. As I was watching this time it can be determined that the fault was the result of an over temperature event. This was the caused by the cooling fans not coming on. Which was traced to the fan VFD controllers which both read OP3 which is an Over voltage during constant speed operation. The operating manual lists these as the possible causes

The input voltage is fluctuating abnormally.

• Power network is greater than 200 kVA

• Power factor capacitor switching

• SCR switching on power network

• The drive controller is regenerating— the load causes the motor to run at a frequency higher than drive controller output frequency.

• Intermittent output phase fault

The proposed solutions are

• Install a line reactor.

• Check the input and output circuits for phase failure and rectify. 

I will continue to monitor over the next few days to see if this continues to happen. If it does I will contact ESC.

 Found both VFDs with OF3 fault (over voltage during constant speed operation).

Thursday, January 08, 2015, 16:37: Cycled power on the chiller to clear faults.

 Dave Morris and I investigated the Faraday Cup today. It was found to be plumed in the wrong direction (fails in). This is not an issue for the conditioning station as there is nothing down stream from the cup. Dave will change the controls to reflect this.

 Earlier in the day it was noted that the rotate function of the crane had creased operation. After David has finished the block moves. Don and I checked the Crane's control unit in the ISAC crane control room and found the breaker tripped for the rotation. The breaker was reset and the crane's rotation is now operational. If this occurs in the future only Travis Cave, Don Jackson or a TRIUMF Electrician are allowed in that control box as it is a 480Volt system. Don or I because we know what we are looking for and the Electrician because they are allowed to touch with and deal 480 V systems.