- On Nov 13 at ~1am the BL1A vacuum went bad.  The T1 and T2 volumes were isolated and pumped on separately, the results indicated a water leak from the T1 target.  The level of the expansion tank was slightly below normal at this time, but not enough to be conclusive.  The leak was confirmed at ~9am by starting the T1 cooling package which caused a dramatic vacuum spike.  Approximately 1" was lost from the expansion tank when the package was started, equal to approximately 2.5L of water.

- The T1-MK1 target was removed from the beam line and transported to the hot cell.  A mound of ice was visible on the target lower plate while it was being lifted.  A radiation field of 160mSv/hr was measured at 0.5m from the target during removal.  Upon inspection in the hot cell, a small but clear hole was visible on the entry window of the position 3 target cassette just slightly above and to the right of center if facing downstream.  No water was visible on the profile or protect monitors.  Approximately 1" of water was visible in the base of the T1 monolith.  The monolith was left open to air overnight, and approximately 0.5" of water was visible in the morning on Nov 14.

- Vacuum group was consulted, and given the relatively small amount of water remaining they agreed to pump the water out of the beam line rather than have Remote Handling group try to remove the water before target installation.  The T1-MK2 target was transported from Hole #3 in the storage pit to the beam line.  A field of 5mSv/hr was measured at 0.5m from the target.  All services were attached.

- An electrical check was performed on the profile and protect monitors by David Cameron from the 1A mezzanine.  Both devices appeared normal.  Plant Group then began to replace the blocks over T1.  Graham Waters updated the control software so that the correct target ladder potentiometer values are referenced.  An updated target information sheet was prepared and delivered to Operations (PDF File Attached)