Control Rods move within SPTA. Connects Drive Mechanisms to nuclear reactor core
Each reactor requires 81 assemblies
Sizes: 150 to 300 mm diameter and 3 meter to 6 meter in length
Weight: 18 tons per reactor
Precision machined parts for accurate precise assembly at site
Ovality within 50 to 150 microns
Straightness within 100 microns per 300 mm, maximum 1 mm over 6 meter length