; (F) develop technologies, including technologies to manage, reduce, or reuse nuclear waste; (G) ensure that nuclear research infrastructure is maintained or constructed, including— (i) currently operational research reactors at the National Laboratories and institutions of higher education; (ii) hot cell research facilities; (iii) a versatile fast neutron source; and (iv) advanced coolant testing facilities, including coolants such as lead, sodium, gas, and molten salt; (H) improve scientific understanding of nonlight water coolant physics and chemistry; (I) develop advanced sensors and control systems, including the identification of tools and methodologies for validating such sensors and systems; (J) investigate advanced manufacturing and advanced construction techniques and materials to reduce the cost of advanced nuclear reactors, including the use of digital twins and of strategies to implement project and construction management best practices, and study the effects of radiation on materials created with these techniques; (K) consult with the Administrator of the National Nuclear Security Administration to integrate reactor safeguards and security into design; (L) support efforts to reduce any technical barriers that would prevent commercial application of advanced nuclear energy systems