Category 1/2 quantities — security controls for high-activity sources. 34 sections, full current text (eCFR edition 2026-07-15), each cross-linked to the AF pubs that cite it.
| Section | Title | AF citations |
|---|---|---|
| 37.1 | Purpose. | — |
| 37.3 | Scope. | — |
| 37.5 | Definitions. | — |
| 37.7 | Communications. | — |
| 37.9 | Interpretations. | — |
| 37.11 | Specific exemptions. | — |
| 37.13 | Information collection requirements: OMB approval. | — |
| 37.21 | Personnel access authorization requirements for category 1 or category 2 quantities of radioactive material. | — |
| 37.23 | Access authorization program requirements. | — |
| 37.25 | Background investigations. | — |
| 37.27 | Requirements for criminal history records checks of individuals granted unescorted access to category 1 or category 2 quantities of radioactive material. | — |
| 37.29 | Relief from fingerprinting, identification, and criminal history records checks and other elements of background investigations for designated categories of individuals permitted unescorted access to certain radioactive materials. | — |
| 37.31 | Protection of information. | — |
| 37.33 | Access authorization program review. | — |
| 37.41 | Security program. | — |
| 37.43 | General security program requirements. | — |
| 37.45 | LLEA coordination. | — |
| 37.47 | Security zones. | — |
| 37.49 | Monitoring, detection, and assessment. | — |
| 37.51 | Maintenance and testing. | — |
| 37.53 | Requirements for mobile devices. | — |
| 37.55 | Security program review. | — |
| 37.57 | Reporting of events. | — |
| 37.71 | Additional requirements for transfer of category 1 and category 2 quantities of radioactive material. | — |
| 37.73 | Applicability of physical protection of category 1 and category 2 quantities of radioactive material during transit. | — |
| 37.75 | Preplanning and coordination of shipment of category 1 or category 2 quantities of radioactive material. | — |
| 37.77 | Advance notification of shipment of category 1 quantities of radioactive material. | — |
| 37.79 | Requirements for physical protection of category 1 and category 2 quantities of radioactive material during shipment. | — |
| 37.81 | Reporting of events. | — |
| 37.101 | Form of records. | — |
| 37.103 | Record retention. | — |
| 37.105 | Inspections. | — |
| 37.107 | Violations. | — |
| 37.109 | Criminal penalties. | — |
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