With Sloan Foundation support, the Carnegie Endowment for International Peace has brokered the development of a voluntary agreement among nuclear reactor vendors to abide by an industry-wide set of principles meant to increase the safety and security of nuclear facilities. This grant funds a year of follow-up activities subsequent to the formal adoption of the principles on September 15, 2011. Funded activities include briefing governments on the final text of the Principles of Conduct; conducting outreach to reactor operators, the World Association of Nuclear Operators, and other stakeholders encouraging them to adopt and abide by the principles; convening a meeting a review meeting to monitor implementation of the procedures set out in the Principles; developing processes to enable sharing of best practices across the industry; and working with nuclear reactor vendors to create an independent secretariat.