(13)In the light of the expected technological and scientific developments, investments in the construction and safe operation of new nuclear installations using best available technologies and approved by an appropriate date by Member States’ competent authorities in accordance with applicable national law should be subject to technical screening criteria and to time-limits that will encourage the development and future use of Generation IV reactors with closed fuel cycle or fuel self-breeding once they become commercially available. These time-limits should be appropriately reviewed in light of progress in the development of such technologies.