2018-02-27: Anders and I finished leak check on ITE primary and second vacuum vessel seals. LD connected to ITE BV2 valves between. LD, Base Leak rate 1.2 xE-9atm.cc/sec, base pressure 0.0XE-4torr. There is a leak has been found on TM4 service cap KF25 blank off. The o-ring on the blank off will be changed later. It is an easy fix . Other seals are good. The big T tank seal on secondary vessel is leak checked as well. It is still fine.  Helium pressure on TM4 water lines will be fulfilled at TCS to save dose.

2018-02-28 Leak checked ITW today, LD connected to ITW BV2 valves between LD base LR0.0XE-9 atm.cc/sec. base pressure 0.0Xe-4torr. There is leak has been found on exit module 1 service cap  on  topcover plate   o-ring. The leak is located on the south side of east edge on exit 1. This is the side module 2 is close beside. The leak rate is up to middle of E-8atm.cc/sec  range with 1-2 second helium spray. The leak and leak position are double checked and confirmed.  To completely fix this leak, the o-ring for top cover plate need to be replaced on service cap.It will be a major shut down job.  The  leak is close to ITW TP3 so it is less affect on beam line elevation vacuum.  Vacuum group experts will be consulted to see if we could leave it to next year shutdown.  Other seals are good including big T-tank seal on secondary vessel. TM2 source tray will be replaced this yea rso no helium pressure test on water lines is needed at this moment.

Findings and photos from the inspections attached. The inspection was conducted by Anders, David and Maico.

By Anders & David. Couplings will be taken apart for inspection.

TM disconnected by David and Yasmine Feb 8th. One of the water couplings were leaking for a short while when disconnected. NCR 10836 submitted by Max

TM disconnected by David and Yasmine Feb 8th

Gordon crane technician Tom finished annual TH crane inspection today. Everything is normal. The main hoist brake gaps are checked on both side. They are good still.

TCS and Tm1 vacuum pumps are switched off this morning. TM1 TP1and TP2 work fine during this test period. Tm1 will be moved back to silo this morning.

TM1 IG1 stopped work during the test period. It could be broken. We will only replace this gauge if TM1 is used in ITW again.

Tm1 has been moved to TCS this morning. All turbo-pumps are started successfully at TCS and TM1.

All TCS and TM3  vacuum pumps are started successfully.

TM3 turbo-pumps are started at TCS. We will keep pumps running until next Wednesday.

The old TM1 Source Tray from 2011 has been moved to Cyclotron basement this morning. Source tray was stored in location 10. The box was moved from the vault to the ante-room yesterday. No contamination was found on the box. Photos

I stopped TCS vacuum pumps for coming TM3 move.

The old TM2 Source Tray from 2009 has been moved to Cyclotron basement this morning. Source tray was stored in location 9. The box was moved from the vault to the ante-room yesterday. No contamination was found on the box.

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.

TCS:IG1S is reporting vacuum levels that seem to be too low (1E-10 to 1E-8 Torr). The gauge was connected to the controller for IG1, which showed the same value. A degas was performed for ~5 min.

Tested all 3 compressors and MP2

Tuesday, January 02, 2018, 14:45: TP1S started

Eric and I finished ITE annual water interlock check. Everything works properly.

High active water system  was  checked before restart. A small water leak on resin can supply valve was found. It is fixed. MP1 and MP2 were started and checked separately. System pressure and flow rate are normal.MP1 is in operation now. 

Stopped MP1 today in preparation for the power outage over the holidays. both P-25 and P-26 breakers have been switched off to prevent inadvertent start of system