Patent ID: 8915161

Claim:
A fine motion control rod drive mechanism handling apparatus configured to attach a motor unit to, and detach the motor unit from, a motor bracket of a fine motion control rod drive mechanism, the fine motion control rod drive mechanism provided with a control rod drive mechanism body, a spool piece, and the motor bracket, the fine motion control rod drive mechanism handling apparatus comprising: a motor unit attachment, configured to support the motor unit, to ascend the motor unit towards the spool piece, to descend the motor unit away from the spool piece, and to generate a force pressing the motor unit against the spool piece when a gear of a gear coupling of the motor unit is in contact with a gear of a gear coupling of the spool piece; a bolt wrench assembly configured to ascend and descend the motor unit; and a rotational mechanism configured to rotate the gear of the gear coupling of the motor unit; wherein the motor unit attachment includes a release mechanism configured to release the force pressing the motor unit against the spool piece, when the gear of the gear coupling of the motor unit and the gear of the gear coupling of the spool piece are in contact but do not mesh with each other; wherein the bolt wrench assembly includes the rotational mechanism.