The following work was performed on the T1 cooling package:

- New filter housing installed for Col. A filter.  The new housing has a drain valve to prevent water spills during future filter changes.
- Ball valve installed upstream of Col. A filter to allow proper isolation of filter during filter changes.

The following work was performed on the T2 cooling package:

- After further investigation it was confirmed that the air-line noise discovered last week was being caused by a fault check valve.  A new valve will be ordered and installed.
- The M20BB air supply Asco valve was rebuilt to fix an air leak.
- The backing plate, paddle-wheel, shaft, and o-ring for Q2 Proteus meter were replaced.  (fixed fluctuating read-out)
- Replaced 90 micron Nupro filter on the demin. line to address low flow issue (flow increased from 1.15gpm to 2.50gpm)
- Replaced Inlet Pressure Transducer (P1) in BL1A tunnel  (fixed fluctuating read-out)

 

The following work was performed at the T2 monolith:

- Signals were checked to confirm proper micro-switch actuation for M9 and M20 beam blockers (all ok)
* When M20BB is actuated a slight creaking or squeaking noise is heard during one part of the travel.  The main shaft and air cylinder shafts were lubricated, but there was no change.   (this is not thought to be a serious issue, and won't be addressed at this time)
- Replaced o-rings on the upper 1-way metering valve for the profile monitor air supply (fixed air leak)
- Replaced all sections of pneumatic hose for top and bottom supply lines to the profile monitor (old line was cracking)
- Checked actuation of profile monitor by powering 4-way Asco valve at cooling package (traveled smoothly)
* Control room was unable actuate the profile monitor remotely, Brian Minato will be notified of this issue
* The "monitor out" display does not show in the control room when the profile monitor is in the out position.  The micro switches were checked and seem fine.