ession 2 of the symposium (see Appendix A) focused on technical chal­lenges associated with conversion and potential solutions for overcom­ing those challenges. Three panels of Russian Federation (R. F.) and U. S. speakers were organized to address these topics:

• Panel 2.1: Technical challenges associated with conversion and potential solutions featured Russian and U. S. presentations on low enriched uranium (LEU) fuel design, core modifications, and approaches for main­taining reactor performance and missions after conversion.

• Panel 2.2: Other technical challenges associated with conversion featured presentations on ageing and obsolescence, regulatory challenges, and challenges posed by research reactors that cannot be converted.

• Panel 2.3: How challenges associated with previously converted reactors were overcome featured presentations on approaches for overcom­ing the conversion challenges identified by the other panels in this session.

These panel presentations are summarized in this chapter along with key thoughts from the participant discussions.