Entrance module has been connected in ITW pit per document 190510 " entrance module disconnection and removal procedure".

Tm4 waterlines helium pressure test and TM service cap helium leak check was done last Friday. All water lines were pressurized with 70psi helium for 3 minutes each. The 3 minutes stable leak rate on all lines are less than 4.0 X E-9atm.cc/sec. some of lines had surging leak rate to 2xE-8 atm.cc/sec at the first 10 seconds of pressurization which should be a gas hammer result at the beginning. Based on the numbers, I would say all water lines are leak free still.  I did helium spray on TM4 service cap. There could be a small leak in high E-9 atm. cc/sec on ion gauge and steer service panel o-ring.  I will replace this o-ring when module is moved out of ITE. Other seals are leak free or less than 2.5X E-9 atm.cc/sec leak rate which are good. I am pretty confirm there is a small leak on ITE entrance module top. The leak rate and location will be confirmed when the rest of leak checks in ITE pit are done.

Tom Gauss inspected  two target module lifting frames ITA0494-1997-01 and ITA0494-1997-02 yesterday. He certified the use of these two frames for 2024. Inspection tags have been issued and attached to frames. He has inspection record on them. 

Tom Kauss inspected target hall crane below hook attachment pins and plates ITA6550-01 yesterday. He certified the use of these pins and plates for year 2024. The inspection of these pins and plates was in Target hall crane annual check list. It was issued as a calibration index by Isaac Earle in 2022-Feb-08.  After inspection, The inspection tag  was issued and attached to pin. Tom has an inspection record on this job.

Chad and I did window line VCRs leak check after containment box removal/installation.  The first  pair of  VCRs have leak. Chad changed VCRs. Both VCr fittings on window lines are completely leak free to 0.0 XE-9 atm.cc/sec now.

TM4 has been moved to SMP. The move is smooth. I started SMP vacuum pump. The TM4 and SMP vessel is under vacuum now.

TM4 coil1, 2 and HS are all OL at 250V at SMP after module move. This week, Chad and Carl fixed short issue on coil1, 2 and HS by insert dropped ultem ring back to position at SHC.

ITE primary and secondary vacuum vessel leak check has been done. SST bellow for 2A3M19  wire scanner on entrance module top has a big leak to E-5 atm.cc/sec on tiny helium spray. The bellow will be replaced in March by probe group. The LD base leak rate is affected by this big leak so i cant keep the LD scale at 0.0Xe-9 atm.cc/sec during the leak check. Other seal are leak free to 8XE-9 atm.cc/sec. I have no big concern on ITE vacuum seals status by the result.

ITW exit 1 module was disconnected  for Exit module flange o -ring replacement yesterday. After oring replacement, the module has been reconnected.

ITW exit 1 module tank flange o ring has been replaced. the old o r-ing was completely flat in slot without elastic property.  tank flange, module flange, and o ring slot were clean by acetone and canister vacuumed. Raised up module 3 feet and pulled new o-ring over module top so new o ring could be  installed without moving module out. after new o ring installation, craned down module to flange and raised up module 2 feet again to confirm the o ring is properly sit in slot.

 ITW entrance module and exit 1 module leak check on module service cap/top air to vacuum seals and module to tank flange  o-rings have been done. all seals and o rings are leak free to 0.0 xE-9atm.cc/sec except one leak ( to low E-6 atm.cc/sec) on ITW RV4 KF50 o-ring was found. It caused by a cross o ring surface scratch on KF 50 flange. the scratch was sanded and polished out. on second time leak check, it is leak free.

100 liters of high active water from HALCW system( mostly from s-tank and pipe lines closing to pumps) are transferred to holding tank in 2A tunnel. Transfer is smooth.  it is a preparation job for ITC:MP1/MP2 refurbishment.  water sample is passed to RPG for assay.

ITE entrance module has been disconnected per document 190510. Its a preparation job for next month module moving out to SHC.

ITE entrance module has been moved from ITE pit to TCS. The move is smooth.ITE entrance module top tank flange and o ring slot are cleaned, and old o ring are replaced.

ITE entrance module has been moved from TCS to ITE. The move is smooth.

ITE entrance module has been reconnected in ITE pit per document 190510.

Tm3 has been moved to SHC from silo. the move is smooth.

ITE entrance module top and module flange o-ing to tank have been leak checked. no leak at 0.0xe-9 atm.cc/sec. things are double checked.

Tm3 has been moved  from SHC to silo. The move is smooth.

both high active pumps ITC:MP1 and MP2 are refurbished by RH group Maico and Peter. Pumps have been installed back to system with new inlet/outlet flange gaskets. high active water surging tank is refilled with water and pumps were primed. I asked operator to switch on pumps separately. Both pumps work fine. They are quiet and pumps discharging pressure is a little bit better comparing to before refurbishment. Nitrogen gas is injecting into system. O2 level is decreasing and R is going up.

2024-04-09: Joel.S checked pumps phase current draw: MP1 16.8 to 17.1A on each phase. MP2 17.0 to 17.2 A on each phase. They are normal. Pump body temperature are below 45C which is fine.