2C extraction probe was removed from cyclotron tank on 2017-02-07 by RH and Probes group members with service
bridge, upper resonator trolley, and 2C attachment. Three QDLs were disengaged remotely, while one had to be
disengaged locally in the tank (just like in 2013, 2014, 2015, and 2016).
Probes group performed annual PMs on EX2C.
EX2C was reinstalled in tank on 2017-02-28 by RH and Probes group members using service bridge, upper resonator
trolley, and 2C attachment. On first installation run, an intermittent failure occurred on one QDL actuator
solenoid. Trolley was driven off service bridge, a faulty solenoid was bypassed and an alternate solenoid on
EX2C attachment was connected, and trolley was driven onto service bridge. On second installation run, a
minor misalignment issue occurred between LRZ interface between EX2C probe and drive motor on the upper tank,
even though all four QDLs were correctly aligned; this issue was resolved with finesse (micro-adjustments) and
patience (multiple engagement attempts). Probes group performed a successful continuity check on EX2C. Service
bridge was pulled from tank. |