The T2 water package was reconnected to the target and started after being shut-off since April 12, 2012. The M9 and M20 groups do not anticipate having to vent the T2 volume, so the package will be left running in preparation for BL1A start-up in early July. There was no change in T2 vacuum levels during start-up, and therefore no water leaks into the vacuum volume.
The T2 expansion tank water loss observed on May 24 (Meson Hall E-Log #33) seems to have been a one time event, possibly caused by someone starting the T2 water package while the target was disconnected. The level of the tank has been checked regularly since the water loss, and there have been no further drops in the level. |