Design Improvement of CPR1000 Steam Generator Supports

The design basis of earthquake resistance for CPR1000 reactor coolant system is only 0.2g, and the design abundance is low. This paper described an improved steam generator support structure with adding sway struts and connecting clevis, and eliminating gaps among supports. The stress analysis indicates that this support structure can enhances the earthquake resistance of the system from 0.2g to 0.3g, and the requirements of HAF102 are completely met.