Document

Licensing Requirements for Microreactors and Other Reactors With Comparable Risk Profiles

Nuclear Regulatory Commission 10 CFR Parts 1, 2, 10, 11, 19, 20, 21, 25, 26, 30, 40, 50, 51, 57, 70, 72, 73, 74, 75, 95, 140, 150 [NRC-2025-0379] RIN 3150-AL36 ( printed page 27...

Nuclear Regulatory Commission
  1. 10 CFR Parts 1, 2, 10, 11, 19, 20, 21, 25, 26, 30, 40, 50, 51, 57, 70, 72, 73, 74, 75, 95, 140, 150
  2. [NRC-2025-0379]
  3. RIN 3150-AL36
( printed page 27870)

Correction

In Proposed Rule Document 2026-08550, appearing on pages 23628-23766 in the issue of Friday, May 1, 2026, make the following corrections:

Definitions. [Corrected]

▪ 1. On page 23707, in the second column, in amendatory paragraph instruction 52 the text “characteristicsv” should read “characteristics”

▪ 2. Beginning on page 23721, in the third column, in amendatory paragraph instruction 91, the table of contents should read “57.1, 57.3, 57.4, 57.5, 57.6, 57.7, 57.8, and 57.9” and should read as set-forth below..

PART 57—LICENSING REQUIREMENTS FOR MICROREACTORS AND OTHER REACTORS WITH COMPARABLE RISK PROFILES [Corrected]

Subpart A—General Provisions
57.1
Scope.
57.3
Definitions.
57.4
Written communications.
57.5
Deliberate misconduct.
57.6
Employee protection.
57.7
Completeness and accuracy of information.
57.8
Information collection requirements: OMB approval.
57.9
Specific exemptions.
57.11
Jurisdictional limits.
57.12
Attacks and destructive acts.
57.13
Rights related to special nuclear material.
57.14
License suspension and rights of recapture.
57.15
Agreement limiting access to Classified Information.
57.16
Backfitting and issue finality.
57.17
Referral to the Advisory Committee on Reactor Safeguards (ACRS).
57.18
Combining licenses; elimination of repetition; relationships between subparts.
57.19
Filing of applications.
Subpart B—Eligibility
57.20
Scope.
57.25
Applicability.
57.30
Design criteria attributes.
57.35
Licensing requirements.
Subpart C—Construction Permits and Operating Licenses
57.40
Scope.
57.45
License required; exceptions from licensing.
57.55
Contents of applications; general information.
57.60
Contents of applications; technical information.
57.80
Standards for review of applications.
57.90
Common standards for licenses.
57.95
Issuance of construction permit.
57.100
Issuance of operating license.
57.105
Continuation of license.
57.110
Transfer of licenses.
57.115
Application for renewal.
57.120
Criteria for renewal.
57.130
Hearings.
57.135
Duration of renewal.
57.142
Finality for construction permits and operating licenses.
Subpart D—Manufacturing Licenses
57.145
Scope.
57.150
Contents of applications for manufacturing licenses; general information.
57.155
Contents of applications; technical information in final safety analysis report.
57.160
Contents of applications; additional information.
57.165
Standards for review of applications.
57.170
Administrative review of applications; hearings.
57.172
Issuance of manufacturing license.
57.175
Finality of manufacturing licenses; information requests.
57.180
Duration of manufacturing license.
57.185
Transfer of manufacturing license.
57.190
Renewal of manufacturing licenses.
57.197
Manufacturing.
Subpart E—Standard Design Approvals
57.200
Scope.
57.205
Contents of applications; general information.
57.210
Contents of applications; technical information.
57.213
Standards for review of applications.
57.215
Staff approval of design.
57.220
Finality of standard design approvals; information requests.
57.225
Duration of design approval.
Subpart F—Reporting of Defects and Noncompliance
57.230
Purpose.
57.235
Scope.
57.240
Definitions.
57.255
Posting requirements.
57.260
Exemptions.
57.270
Notification of failure to comply or existence of a defect and its evaluation.
57.275
Procurement documents.
57.280
Inspections.
57.285
Maintenance and inspection of records.
57.290
Failure to notify.
Subpart G—Irradiated Fuel Storage, Decommissioning, and Termination of License Requirements
57.300
Irradiated fuel storage.
57.305
Decommissioning and license termination.
Subpart H—Maintaining and Revising Licensing Basis Information
57.310
Amendment of license.
57.312
Changes to facility as described in final safety analysis reports.
57.315
Maintenance and submittal of the final safety analysis, as updated.
57.317
Updated decommissioning report
Subpart I—Transportation Package Design Certification
57.319
Purpose.
57.320
Applicability.
Subpart J—Physical Security Requirements
57.325
Physical security requirements.
Subpart K—Categorical Exclusion
57.350
Categorical exclusion.
Subpart L—Inspections
57.355
Unfettered access for inspections.
Subpart M—Material Control and Accounting
57.360
Material control and accounting.
Subpart N [Reserved]
Subpart O—Enforcement
57.380
Violations.
57.385
Criminal penalties.
Subpart P—Operator Licensing and Human Factors
57.390
Definitions.
57.391
General requirements for operator licensing and human factors.
57.392
Communications.
57.393
Completeness and accuracy of information.
57.395
Human factors engineering requirements.
57.398
Operator license requirements.
57.399
Facility licensee requirements—General.
57.400
Facility licensee requirements related to GLROs.
57.405
Generally licensed reactor operators.
57.410
Generally licensed reactor operator training, examination, and proficiency programs.
57.415
Cessation of individual applicability.
57.420
Operator licensing for operator-dependent facilities.
57.421
Medical requirements.
57.422
Incapacitation because of disability or illness.
57.423
Applications for operators and senior operators.
57.424
Training, examination, and proficiency programs.
57.425
Conditions of operator and senior operator licenses.
57.426
Issuance, modification, and revocation of operator and senor operator licenses.
57.427
Expiration of operator and senior operator licenses.
57.429
Training and qualification for non-licensed personnel.
Subpart Q—Reporting and Other Administrative Requirements
57.430
Maintenance of records, making of reports. ( printed page 27871)
57.435
Reporting requirements.
57.440
Licensee event report system.
57.445
Reports of radiation exposure to members of the public.

Subpart A—General Provisions [Corrected]

* * * * *
Scope. [Corrected]

▪ 3. On page 23722, in the third column, the heading, “§ 57.157.1 Scope.” should read “§ 57.1 Scope.”

Definitions. [Corrected]

▪ 4. On page 23722, in the third column, the heading, “§ 57.357.3 Definitions.”, should read “§ 57.3 Definitions.”

Written communications. [Corrected]

▪ 5. On page 23724, in the third column, the heading, “§ 57.457.4 Written communications.”, should read “§ 57.4 Written communications.”

Deliberate misconduct. [Corrected]

▪ 6. On page 23726, in the first column, the heading, “§ 57.557.5 Deliberate misconduct.”, should read “§ 57.5 Deliberate misconduct.”

Employee protection. [Corrected]

▪ 7. On page 23726, in the second column, the heading, “§ 57.657.6 Employee protection.”, should read “§ 57.6 Employee protection.”

Completeness and accuracy of information. [Corrected]

▪ 8. On page 23727, in the first column, the heading, “§ 57.757.7 Completeness and accuracy of information.”, should read “§ 57.7 Completeness and accuracy of information.”

Information collection requirements: OMB approval. [Corrected]

▪ 9. On page 23727, in the second column, the heading, “§ 57.857.8 Information collection requirements: OMB approval.”, should read “§ 57.8 Information collection requirements: OMB approval.”

Specific exemptions. [Corrected]

▪ 10. On page 23727, in the second column, the heading, “§ 57.957.9 Specific exemptions.”, should read “§ 57.9 Specific exemptions.”

* * * * *
Definitions. [Corrected]

▪ 11. On page 23761, in the third column, the heading, “§ 72.372.3 Definitions.”, should read “§ 72.3 Definitions.”

* * * * *
Purpose and scope. [Corrected]

▪ 12. On page 23762, in the second column, the heading “§ 73.173.1 Purpose and scope.”, should read “§ 73.1 Purpose and scope.”

Definitions. [Corrected]

▪ 13. On page 23762, in the second column, the heading “§ 73.273.2 Definitions.”, should read “§ 73.2 Definitions.”

Information collection requirements: OMB approval. [Corrected]

▪ 14. On page 23762, in the second column, the heading “§ 73.873.8 Information collection requirements: OMB approval.”, should read “§ 73.8 Information collection requirements: OMB approval.”

* * * * *
Definitions. [Corrected]

▪ 15. On page 23765, in the second column, the heading “§ 75.475.4 Definitions.”, should read “§ 75.4 Definitions.”

* * * * *
Definitions. [Corrected]

▪ 16. On page 23765, in the third column, the heading “§ 95.595.5 Definitions.”, should read “§ 95.5 Definitions.”

* * * * *
Scope. [Corrected]

▪ 17. On page 23765, in the third column, the heading “§ 140.2140.2 Scope.”, should read “§ 140.2 Scope.”

* * * * *

[FR Doc. C1-2026-08550 Filed 5-14-26; 8:45 am]

BILLING CODE 0099-10-D

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Federal Register Citation

Use this for formal legal and research references to the published document.

91 FR 27870

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“Licensing Requirements for Microreactors and Other Reactors With Comparable Risk Profiles,” thefederalregister.org (May 15, 2026), https://thefederalregister.org/documents/C1-2026-08550/licensing-requirements-for-microreactors-and-other-reactors-with-comparable-risk-profiles.