Office of Advanced Reactors

Division of Advanced Reactor Licensing (DARL) 

Responsible for issuing permits, licenses, and approvals for advanced reactor facilities by managing the review of pre-application submittals and license applications. The Division coordinates closely with technical staff across safety, security, and environmental disciplines to ensure integrated, safety-focused, and right-sized regulatory reviews. 

Advanced Reactor Licensing Branches (ARL[X])

Issues permits and licenses for advanced reactors by managing the review of pre-application documents and license applications. Coordinates with technical staff across disciplines to ensure safety-focused right-sized assessments. 

Division of Advanced Reactor Programs (DARP)  

Leads and coordinates the NRC's regulatory activities for advanced reactor technologies by developing and implementing modern, risk-informed regulatory frameworks, licensing processes, and oversight strategies. The Division provides integrated programmatic leadership across licensing, inspection and operational readiness, environmental reviews required under NEPA, operator licensing and training approvals, performance tracking, and ITAAC closure. It ensures alignment with Agency priorities and transparency through internal coordination, stakeholder and intergovernmental engagement, international collaboration, and clear communication of the NRC's advanced reactor activities. 

Advanced Reactor Programs Branch (ARPB) 

Leads the development of regulatory frameworks and processes and resolution of programmatic issues associated with advanced reactor licensing. Drives transformational change to modernize the regulatory framework and licensing processes, enabling efficient and effective reviews of advanced reactor applications. Oversees cross-cutting initiatives and alignment with Agency priorities. 

Advanced Reactor Infrastructure Branch (ARIB) 

Provides oversight, coordination, and communication functions for advanced reactor activities. Manages stakeholder engagement, including public meetings, outreach to state, tribal, and local governments, and international engagement with organizations such as IAEA and OECD/NEA. Maintains transparency of NRC's advanced reactor activities through communications, reporting, and dashboards. Delivers comprehensive mission and program support to the Office of Advanced Reactors, enabling the organization to operate with efficiency, consistency, and strategic focus. Oversees a full suite of critical functions-including administrative services, human capital management, information management, financial management, performance management, and internal controls-to ensure seamless execution of office priorities. In addition to core operational responsibilities, the team represents the office in intra-agency and inter-agency initiatives within its areas of expertise.

Advanced Reactor Program Analysis Team (ARPT) 

Provides leadership for strategic and long-range programmatic planning and analysis to support the safe deployment of advanced reactor technologies. Supports records management, Freedom of Information Act coordination and management of administrative procedures.

Advanced Reactor Oversight Branch (AROB) 

Oversees performance tracking, inspection planning integration, and readiness for construction and operational oversight. Develops and pilots innovative, risk-informed oversight strategies tailored to advanced reactor designs. Manages and tracks closure of inspection, tests, analysis, and acceptance criteria (ITAAC) to support issuance of a 10 CFR 52.103g finding. Reviews and approves new training and operator licensing programs for advanced reactors. Oversees quality assurance processes for 
advanced reactor applicants and licensees.

Advanced Reactor Environmental Review Branch (ARERB) 

Issues environmental documents as required by NEPA for advanced reactors by managing the review of pre-application documents and license applications. Coordinates with technical staff across disciplines to ensure safety-focused right-sized assessments.

Division of Advanced Reactor Engineering (DARE)  

Provides safety-focused technical expertise to support the NRC's review of advanced reactor pre-application submittals and license applications. The Division conducts integrated engineering reviews encompassing reactor systems, accident analyses, and consequence evaluations, and applies sound engineering judgment to ensure protection of public health and safety. It supports the development,refinement, and application of risk-informed, performance-based regulatory frameworks for advanced reactors by contributing to review standards, analytical methods, and technical guidance, and by coordinating closely with licensing and oversight organizations to enable efficient, high-quality regulatory decision-making.

Advanced Reactor Engineering Branches (ARE[X]) 

Performs safety-focused technical reviews of pre-application submittals and license applications for advanced reactors. Concentrates on engineering disciplines, reactor systems analysis, and accident consequence evaluations. Supports the development and application of risk-informed, performance-based regulatory frameworks for advanced reactors, including review standards, analytical methods, and technical guidance.

Division of Advanced Reactor Science (DARS) 

Provides scientific, environmental, and programmatic expertise to support the NRC's review of advanced reactor pre-application submittals and license applications. The Division conducts integrated reviews in areas including reliability and risk, external hazards, human factors engineering, security, and technical specifications to ensure safety-focused, right-sized regulatory decisions. It supports the development and application of risk-informed, performance-based regulatory frameworks for advanced reactors by 
contributing to review guidance, analytical approaches, and programmatic integration across licensing, oversight, and environmental review activities.

Advanced Reactor Science Branches (ARS[X]) 

Performs environmental, scientific, and programmatic reviews supporting advanced reactor licensing actions. Reviews pre-application documents and license applications in areas such as reliability and risk, external hazards (seismic, flooding, meteorology), human factors engineering, security, and technical specifications. Contributes to the development and application of a risk-informed, performance-based regulatory framework for advanced reactors in these scientific and programmatic domains.