TM#2 has been moved from the south hot cell to the conditioning station.

TCS: TP1, TP2 and TP1S are started.

I will restart all pumps Monday morning.  

No issue.

ITW water system maintenance is done. All working paddle wheels and coils are replaced. ITW water system polyurethane tubes are replaced as well. Two 3/8" leak small valves on return lines are replaced. 85 liters of tritium water are transferred from storage tank to B2 level holding tank. LALC water are refilled into S-tank. Restarted pump and checked system. Everything works fine now. No water leak has been found so far.  

leak detector base LR: 0.0Xe-9atm.cc/sec. helium 70 psi. test time : 3 minutes for each circuit.The results in atm.cc/sec are Ta+(A):1.8  XE-8. TA-(B):0.0xE-9. Tu-(C):1.2XE-7. TU+(D):1.6XE-7. Coil 2 (PQ):0.0XE-9. Coil 1 (RU):0.0XE-9. MSP:2.2XE-7. EE:1.0XE-7. HS:N/A. Window:5.8XE-9

Preparation on TM2 move from TCS to SHC.

 TM#2 has been moved from the conditioning station to the south hot cell.

Containment box has been removed from TM2 in preparation for source tray removal. I will walk Aaron through removal of the optics tray today also.

Aaron has removed the optics tray in TM2 in preparation for source tray removal.

I have installed the module side water block jig.

The source tray has been removed from TM2.

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

The containment box has been reinstalled onto TM2 in prepatation for testing in the conditioning station.

 TM#2 with no source tray has been moved from the south hot cell to the conditioning station.

BIAS and EZL connected. No water flowing into the module (water looped on top of module)

Friday, March 01, 2019, 08:20: 10kV

Friday, March 01, 2019, 08:40: 20kV

Friday, March 01, 2019, 08:57: 30kV

Friday, March 01, 2019, 11:00: 40kV

Friday, March 01, 2019, 15:23: 50kV

Monday, March 04, 2019, 08:50: 50kV

Monday, March 04, 2019, 09:22: 52.5kV

Monday, March 04, 2019, 10:01: Spark tripped TPs at 54kV

Monday, March 04, 2019, 10:04: 50kV

Monday, March 04, 2019, 10:14: Multiple sparks at 54kV. Lowered to 30kV to stop.

Monday, March 04, 2019, 10:15: 40kV

Monday, March 04, 2019, 10:16: Sparking at 42kV. Lowered to 40kV

Monday, March 04, 2019, 10:19: 42kV

Monday, March 04, 2019, 10:48: 50kV

Monday, March 04, 2019, 11:11: 52.5kV

Monday, March 04, 2019, 11:25: 54kV

Monday, March 04, 2019, 11:50: 55kV

Monday, March 04, 2019, 13:33: 3 sparks observed for the last 1.5h

Removed HV cover to avoid sparking between F/T and cover.

Monday, March 04, 2019, 14:02:20kV

Monday, March 04, 2019, 14:06: 50kV

 Monday, March 04, 2019, 14:12: 55kV

Monday, March 04, 2019, 14:20: Multiple sparks at 56kV. Lowered to 30kV to stop.

Monday, March 04, 2019, 14:27: 40kV

Monday, March 04, 2019, 14:29: 50kV

Monday, March 04, 2019, 14:32: 55kV

Monday, March 04, 2019, 14:40: 56kV

Monday, March 04, 2019, 14:55: Multiple sparks at 57kV. Lowered to 30kV to stop

Monday, March 04, 2019, 15:01: 55kV

Monday, March 04, 2019, 15:36: 57kV

Monday, March 04, 2019, 15:51: 57.5kV

Monday, March 04, 2019, 16:30: ~1 spark in 0.5h, somewhat unstable current (see attached Word file)

Monday, March 04, 2019, 16:30: HV off

TM4 optics tray was installed onto the old TM2 source tray yesterday and tray filled with non-active metal scrap. Tray inserted into transfer frame 95% yesterday. During insertion the ball nut of the transfer jig became unfastened from its drive plate. This will have to be fixed before the jig can be used reliably again however we were able to finish the job...the transfer jig is 20 years old now so it is not entirely suprising that it needs some attention.

Today the Tm2 tray final install into the transport tray occurred by driving the tray drive screw and bringing the tray into the transfer frame the last inch 1/2 or so. "Feet" (ITA2380) had to be removed from sliding tray assembly to fit in the box however upon attempting this is was immediately clear that one of the screws was stuck and must have been cross threaded during assembly. As as result the entire drive bracket (ITA2375) had to be removed form the source tray to allow final insertion into the box.

11 handles from spent target transfers, 1 plastic bin box, Ta LP test target TRI coil, 1 aluminum box, sockets and extensions from spent target transfers and 5 obsolete legs from previous source tray replacements were amoung the items disposed of with the spent source tray.

Spark between HV cover vertical mesh plate and HS 60KV  bias connecting clamp 90degree angle at 55 KV on TM2 top. HV cover is removed to test above  55KV. The spark triggered TH and SHC ventilation secondary alarm.

TM2 has been moved from TCS to SHC. The move is smooth.

The containment box has been removed from TM2 and the water block jig installed in preparation for water block polishing.