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Title 10

Displaying title 10, up to date as of 7/16/2026. Title 10 was last amended 7/13/2026.
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  1. Title 10 —Energy
  2. Chapter I —Nuclear Regulatory Commission
  3. Part 50   View Full Text
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Title 10EnergyPart / Section
Chapter INuclear Regulatory Commission1 – 199
Part 50Domestic Licensing of Production and Utilization Facilities50.1 – 50.160
General Provisions50.1 – 50.9
§ 50.1Basis, purpose, and procedures applicable.
§ 50.2Definitions.
§ 50.3Interpretations.
§ 50.4Written communications.
§ 50.5Deliberate misconduct.
§ 50.7Employee protection.
§ 50.8Information collection requirements: OMB approval.
§ 50.9Completeness and accuracy of information.
Requirement of License, Exceptions50.10 – 50.13
§ 50.10License required; limited work authorization.
§ 50.11Exceptions and exemptions from licensing requirements.
§ 50.12Specific exemptions.
§ 50.13Attacks and destructive acts by enemies of the United States; and defense activities.
Classification and Description of Licenses50.20 – 50.23
§ 50.20Two classes of licenses.
§ 50.21Class 104 licenses; for medical therapy and research and development facilities.
§ 50.22Class 103 licenses; for commercial and industrial facilities.
§ 50.23Construction permits.
Applications for Licenses, Certifications, and Regulatory Approvals; Form; Contents; Ineligibility of Certain Applicants50.30 – 50.39
§ 50.30Filing of application; oath or affirmation.
§ 50.31Combining applications.
§ 50.32Elimination of repetition.
§ 50.33Contents of applications; general information.
§ 50.34Contents of applications; technical information.
§ 50.34aDesign objectives for equipment to control releases of radioactive material in effluents—nuclear power reactors.
§ 50.35Issuance of construction permits.
§ 50.36Technical specifications.
§ 50.36aTechnical specifications on effluents from nuclear power reactors.
§ 50.36bEnvironmental conditions.
§ 50.37Agreement limiting access to Classified Information.
§ 50.38Ineligibility of certain applicants.
§ 50.39Public inspection of applications.
Standards for Licenses, Certifications, and Regulatory Approvals50.40 – 50.49
§ 50.40Common standards.
§ 50.41Additional standards for class 104 licenses.
§ 50.42Additional standard for class 103 licenses.
§ 50.43Additional standards and provisions affecting class 103 licenses and certifications for commercial power.
§ 50.44Combustible gas control for nuclear power reactors.
§ 50.45Standards for construction permits, operating licenses, and combined licenses.
§ 50.46Acceptance criteria for emergency core cooling systems for light-water nuclear power reactors.
§ 50.46aAcceptance criteria for reactor coolant system venting systems.
§ 50.47Emergency plans.
§ 50.48Fire protection.
§ 50.49Environmental qualification of electric equipment important to safety for nuclear power plants.
Issuance, Limitations, and Conditions of Licenses and Construction Permits50.50 – 50.69
§ 50.50Issuance of licenses and construction permits.
§ 50.51Continuation of license.
§ 50.52Combining licenses.
§ 50.53Jurisdictional limitations.
§ 50.54Conditions of licenses.
§ 50.55Conditions of construction permits, early site permits, combined licenses, and manufacturing licenses.
§ 50.55aCodes and standards.
§ 50.56Conversion of construction permit to license; or amendment of license.
§ 50.57Issuance of operating license.
§ 50.58Hearings and report of the Advisory Committee on Reactor Safeguards.
§ 50.59Changes, tests, and experiments.
§ 50.60Acceptance criteria for fracture prevention measures for lightwater nuclear power reactors for normal operation.
§ 50.61Fracture toughness requirements for protection against pressurized thermal shock events.
§ 50.61aAlternate fracture toughness requirements for protection against pressurized thermal shock events.
§ 50.62Requirements for reduction of risk from anticipated transients without scram (ATWS) events for light-water-cooled nuclear power plants.
§ 50.63Loss of all alternating current power.
§ 50.64Limitations on the use of highly enriched uranium (HEU) in domestic non-power reactors.
§ 50.65Requirements for monitoring the effectiveness of maintenance at nuclear power plants.
§ 50.66Requirements for thermal annealing of the reactor pressure vessel.
§ 50.67Accident source term.
§ 50.68Criticality accident requirements.
§ 50.69Risk-informed categorization and treatment of structures, systems and components for nuclear power reactors.
Inspections, Records, Reports, Notifications50.70 – 50.76
§ 50.70Inspections.
§ 50.71Maintenance of records, making of reports.
§ 50.72Immediate notification requirements for operating nuclear power reactors.
§ 50.73Licensee event report system.
§ 50.74Notification of change in operator or senior operator status.
§ 50.75Reporting and recordkeeping for decommissioning planning.
§ 50.76Licensee's change of status; financial qualifications.
US/IAEA Safeguards Agreement50.78
§ 50.78Facility information and verification.
Transfers of Licenses—Creditors' Rights—Surrender of Licenses50.80 – 50.83
§ 50.80Transfer of licenses.
§ 50.81Creditor regulations.
§ 50.82Termination of license.
§ 50.83Release of part of a power reactor facility or site for unrestricted use.
Amendment of License or Construction Permit at Request of Holder50.90 – 50.92
§ 50.90Application for amendment of license, construction permit, or early site permit.
§ 50.91Notice for public comment; State consultation.
§ 50.92Issuance of amendment.
Revocation, Suspension, Modification, Amendment of Licenses and Construction Permits, Emergency Operations by the Commission50.100 – 50.103
§ 50.100Revocation, suspension, modification of licenses, permits, and approvals for cause.
§ 50.101Retaking possession of special nuclear material.
§ 50.102Commission order for operation after revocation.
§ 50.103Suspension and operation in war or national emergency.
Backfitting50.109
§ 50.109Backfitting.
Enforcement50.110 – 50.111
§ 50.110Violations.
§ 50.111Criminal penalties.
Additional Standards for Licenses, Certifications, and Regulatory Approvals50.120 – 50.155
§ 50.120Training and qualification of nuclear power plant personnel.
§ 50.135Renewal of non-power production or utilization facility licenses issued under § 50.22 and testing facility licenses.
§ 50.150Aircraft impact assessment.
§ 50.155Mitigation of beyond-design-basis events.
Small Modular Reactors, Non-Light-Water Reactors, and Non-Power Production or Utilization Facilities50.160
§ 50.160Emergency preparedness for small modular reactors, non-light-water reactors, and non-power production or utilization facilities.
Appendix A to Part 50
General Design Criteria for Nuclear Power Plants
Appendix B to Part 50
Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants
Appendix C to Part 50
A Guide for the Financial Data and Related Information Required To Establish Financial Qualifications for Construction Permits and Combined Licenses
Appendix D to Part 50 [Reserved]
Appendix E to Part 50
Emergency Planning and Preparedness for Production and Utilization Facilities
Appendix F to Part 50
Policy Relating to the Siting of Fuel Reprocessing Plants and Related Waste Management Facilities
Appendix G to Part 50
Fracture Toughness Requirements
Appendix H to Part 50
Reactor Vessel Material Surveillance Program Requirements
Appendix I to Part 50
Numerical Guides for Design Objectives and Limiting Conditions for Operation To Meet the Criterion “As Low as is Reasonably Achievable” for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents
Appendix J to Part 50
Primary Reactor Containment Leakage Testing for Water-Cooled Power Reactors
Appendix K to Part 50
ECCS Evaluation Models
Appendixes L-M to Part 50 [Reserved]
Appendix N to Part 50
Standardization of Nuclear Power Plant Designs: Permits To Construct and Licenses To Operate Nuclear Power Reactors of Identical Design at Multiple Sites
Appendixes O-P to Part 50 [Reserved]
Appendix Q to Part 50
Pre-Application Early Review of Site Suitability Issues
Appendix R to Part 50
Fire Protection Program for Nuclear Power Facilities Operating Prior to January 1, 1979
Appendix S to Part 50
Earthquake Engineering Criteria for Nuclear Power Plants
eCFR Content