In the US, the NRC, the nuclear industry, and other stakeholders have been collaborating and addressing potential licensing, policy and technical issues for SMR LWR designs since 2009. These issues result mainly from the key differences between the new SMR designs and current large LWR designs (such as size, moderator, coolant/ cooling systems, fuel design, and projected operational parameters). But they also result from proposed review approaches and modifications to current policies and practices. The NRC staff addressed the key licensing and policy issues in SECY — 10-0034 (28 March 2010) and the following provides a brief description of those key issues.