Two changes have been made to the control system to the South Hot Cell:
- Addition of two emergency stop buttons: one located in the Target Hall on the wall adjacent to the hot cell, and one located on the control panel adjacent the operator station.
- Addition of limit switches to the turntable's vertical drive system to prevent over-travel at both the upper and lower limits.
The emergency stops will both stop all turntable motion: vertical and rotational.
An update to operating procedures: in order for the vertical motion system to function, the limit switch cable must be plugged in. When plugging in the vertical drive motor to the wall outlet as per normal operating procedure, it is now required to also connect the limit switch (which is mounted near the motor on the driveshaft) to the cable coming from the appropriately labelled junction box on the South wall (M12 connector).
These changes are based on electrical drawings IRH2083 - IRH2085 and mechanical assembly drawing ITA6739. The changes have been commissioned according to commissioning plan Document-218490. The commissioning report will be uploaded to DocuShare. The work permit for this upgrade was I2022-02-15--3.
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