CUI Explorer

Unclassified Controlled Nuclear Information - Defense

Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.

Registry statusNARA & DoD
MarkingDCNI
Organizational index groupDefense
Updated2026-05-15

This page exposes extracted CUI registry and authority analysis as crawlable text. The interactive explorer remains the operational workspace for filtering, comparison, and voice-agent aligned study.

Registry comparison

Field NARA Registry DoD Registry
Category description Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223. Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
Category marking DCNI DCNI
Banner marking CUI No corresponding field
Basic or Specified Basic + Specified No corresponding field
Authorities 10 USC 128(a), 32 CFR 223 10 USC 128(a), 32 CFR 223
DoD applicable policies No corresponding field DoDI 5210.83
Required warning statement No corresponding field Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
Required dissemination control CUI, CUI//SP-DCNI None listed
Examples No corresponding field Physical protection of DoD SNM facilities and equipment, In-transit security procedures for SNM, Material control/accountability of SNM
Registry date May 8, 2025 2026-05-15

Authority analysis

Authority title
Registry authority evidence compiled; primary authority text analysis pending
Authorities
Multiple registry authorities
Source currency
NARA last reviewed: May 8, 2025 | DoD detail accessed: 2026-05-15
How the authority operates
NARA registry status: Basic + Specified. Per-authority NARA status values: Basic, Specified. NARA banner marking evidence: CUI, CUI//SP-DCNI. The registry evidence is preserved here; detailed primary-law or regulation text analysis remains pending for this category.

Trigger conditions

  • NARA category scope: Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD category scope: Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD registry-required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128

Covered information

  • Physical protection of DoD SNM facilities and equipment
  • In-transit security procedures for SNM
  • Material control/accountability of SNM
  • Registry-described information: Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD-described information: Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.

Specified controls

Nara basic or specified
Basic + Specified
Nara authority rows
10 USC 128(a) | status: Basic | banner: CUI || 32 CFR 223 | status: Specified | banner: CUI//SP-DCNI
Nara banner markings
CUI, CUI//SP-DCNI
Dod required warning statement
Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
Dod applicable policies
DoDI 5210.83

Safeguarding and dissemination controls

NARA Registry
CUI, CUI//SP-DCNI
DoD Registry
None listed
Authority analysis
No DoD required dissemination control is listed on the registry page. Apply approved limited dissemination controls only when required or permitted by the designating agency or governing authority.
Basic or Specified
Use the registry assertions, NARA authority rows, DoD authorities, DoD policies, warning statements, required dissemination controls, and examples first. Where the cited authority does not specify a handling detail, apply CUI Basic safeguards and dissemination rules so long as they do not conflict with the authority or agency-specific controls.

Related authorities

Authority-by-authority detail

10 USC 128(a)

Listed by: NARA Registry, DoD Registry, Related authorities

Designation evidence

  • NARA authority row: 10 USC 128(a) | status: Basic | banner: CUI.
  • DoD authority row: 10 USC 128(a). DoD lists this citation for the category; this DoD detail page does not display a separate Basic/Specified field.
  • Related authority evidence: 10 USC 128(a) | status: Basic | banner: CUI
  • Related authority evidence: DoD lists this authority for the category; the linked authority text is extracted below when available.
  • Registry designation context: Basic + Specified, CUI. The linked authority text contains category-scope or applicability language that helps determine when the information falls within this CUI category. The linked authority text contains disclosure, access, protection, release, dissemination, or distribution-control language relevant to handling. The linked authority text contains violation, penalty, sanction, or enforcement language that may affect consequences for mishandling.
  • Registry designation for this category is Basic + Specified with banner CUI.

Extracted authority meaning

  • Page 121 TITLE 10—ARMED FORCES § 128
  • Registry designation context: Basic + Specified, CUI. The linked authority text contains category-scope or applicability language that helps determine when the information falls within this CUI category. The linked authority text contains disclosure, access, protection, release, dissemination, or distribution-control language relevant to handling. The linked authority text contains violation, penalty, sanction, or enforcement language that may affect consequences for mishandling.

Operating conditions

  • NARA category scope used with this authority: Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD category scope used with this authority: Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • 10 USC 128(a) | status: Basic | banner: CUI
  • DoD lists this authority for the category; the linked authority text is extracted below when available.
  • NARA registry status: Basic + Specified. Per-authority NARA status values: Basic, Specified. NARA banner marking evidence: CUI, CUI//SP-DCNI. The registry evidence is preserved here; detailed primary-law or regulation text analysis remains pending for this category.
  • NARA category scope: Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD category scope: Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD registry-required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
  • Extracted authority condition: (2) R EPORT ON CURRENT CALENDAR YEAR.—Not later than six months after the date of the submittal of the report most recently submit- ted under paragraph (1), the Secretary shall submit to the congressional defense commit- tees a report on the support provided under this section during the first half of the cal- endar year in which the report under this paragraph is submitted.
  • Extracted authority condition: Page 122 TITLE 10—ARMED FORCES § 129 tion of information, and subject to section 552(b)(3) of title 5, the Secretary of Defense, with respect to special nuclear materials, shall pre- scribe such regulations, after notice and oppor- tunity for public comment thereon, or issue such orders as may be necessary to prohibit the unauthorized dissemination of unclassified in- formation pertaining to security measures, in- cluding security plans, procedures, and equip- ment for the physical protection of special nu- clear material.
  • Extracted authority condition: (d) Information that the Secretary prohibits to be disseminated pursuant to subsection (a) that is provided to a State or local government shall remain under the control of the Depart- ment of Defense, and a State or local law au- thorizing or requiring a State or local govern- ment to disclose such information shall not apply to such information.
  • Extracted authority condition: (2) The Secretary may prescribe regulations or issue orders under paragraph (1) to prohibit the dissemination of any information described in such paragraph only if and to the extent that the Secretary determines that the unauthorized dissemination of such information could reason- ably be expected to have a significant adverse effect on the health and safety of the public or the common defense and security by signifi- cantly increasing the likelihood of— (A) illegal production of nuclear weapons, or (B) theft, diversion, or sabotage of special nuclear materials, equipment, or facilities.
  • Extracted authority condition: (4) The Secretary shall exercise his authority under this subsection to prohibit the dissemina- tion of any information described in paragraph (1)— (A) so as to apply the minimum restrictions needed to protect the health and safety of the public or the common defense and security; and (B) upon a determination that the unauthor- ized dissemination of such information could reasonably be expected to result in a signifi- cant adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of— (i) illegal production of nuclear weapons, or (ii) theft, diversion, or sabotage of nuclear materials, equipment, or facilities.

Safeguarding and dissemination controls

  • NARA registry control evidence: status Basic; banner marking CUI.
  • DoD required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
  • DoD applicable policies: DoDI 5210.83
  • Nara basic or specified: Basic + Specified
  • Nara authority rows: 10 USC 128(a) | status: Basic | banner: CUI || 32 CFR 223 | status: Specified | banner: CUI//SP-DCNI
  • Nara banner markings: CUI, CUI//SP-DCNI
  • Dod required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
  • Dod applicable policies: DoDI 5210.83
  • No DoD required dissemination control is listed on the registry page. Apply approved limited dissemination controls only when required or permitted by the designating agency or governing authority.
  • Use the registry assertions, NARA authority rows, DoD authorities, DoD policies, warning statements, required dissemination controls, and examples first. Where the cited authority does not specify a handling detail, apply CUI Basic safeguards and dissemination rules so long as they do not conflict with the authority or agency-specific controls.
  • Extracted authority control: Page 122 TITLE 10—ARMED FORCES § 129 tion of information, and subject to section 552(b)(3) of title 5, the Secretary of Defense, with respect to special nuclear materials, shall pre- scribe such regulations, after notice and oppor- tunity for public comment thereon, or issue such orders as may be necessary to prohibit the unauthorized dissemination of unclassified in- formation pertaining to security measures, in- cluding security plans, procedures, and equip- ment for the physical protection of special nu- clear material.
  • Extracted authority control: (4) The Secretary shall exercise his authority under this subsection to prohibit the dissemina- tion of any information described in paragraph (1)— (A) so as to apply the minimum restrictions needed to protect the health and safety of the public or the common defense and security; and (B) upon a determination that the unauthor- ized dissemination of such information could reasonably be expected to result in a signifi- cant adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of— (i) illegal production of nuclear weapons, or (ii) theft, diversion, or sabotage of nuclear materials, equipment, or facilities.
  • Extracted authority control: Control and physical protection of special nuclear material: limitation on dissemination of unclassified information (a)(1) In addition to any other authority or re- quirement regarding protection from dissemina-
  • Extracted authority control: (2) The Secretary may prescribe regulations or issue orders under paragraph (1) to prohibit the dissemination of any information described in such paragraph only if and to the extent that the Secretary determines that the unauthorized dissemination of such information could reason- ably be expected to have a significant adverse effect on the health and safety of the public or the common defense and security by signifi- cantly increasing the likelihood of— (A) illegal production of nuclear weapons, or (B) theft, diversion, or sabotage of special nuclear materials, equipment, or facilities.
  • Extracted authority control: (d) Information that the Secretary prohibits to be disseminated pursuant to subsection (a) that is provided to a State or local government shall remain under the control of the Depart- ment of Defense, and a State or local law au- thorizing or requiring a State or local govern- ment to disclose such information shall not apply to such information.
  • Extracted authority control: Civilian personnel management (a) The civilian personnel of the Department of Defense shall be managed each fiscal year on the basis of and consistent with (1) the total force management policies and procedures es- tablished under section 129a of this title, (2) the workload required to carry out the functions and activities of the department, and (3) the funds made available to the department for such fiscal year.
  • Extracted authority control: (c)(1) Not later than February 1 of each year— (A) the Secretary of Defense shall submit to the congressional defense committees a report on the management of the civilian workforce of the Office of the Secretary of Defense and the Defense Agencies and Field Activities; and (B) the Secretary of each military depart- ment shall submit to the congressional de- fense committees a report on the management of the civilian workforces under the jurisdic- tion of such Secretary.

Authority excerpts

Most relevant extracted authority passage

Page 122 TITLE 10—ARMED FORCES § 129 tion of information, and subject to section 552(b)(3) of title 5, the Secretary of Defense, with respect to special nuclear materials, shall pre- scribe such regulations, after notice and oppor- tunity for public comment thereon, or issue such orders as may be necessary to prohibit the unauthorized dissemination of unclassified in- formation pertaining to security measures, in- cluding security plans, procedures, and equip- ment for the physical protection of special nu- clear material.

Extracted authority passage 2

(4) The Secretary shall exercise his authority under this subsection to prohibit the dissemina- tion of any information described in paragraph (1)— (A) so as to apply the minimum restrictions needed to protect the health and safety of the public or the common defense and security; and (B) upon a determination that the unauthor- ized dissemination of such information could reasonably be expected to result in a signifi- cant adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of— (i) illegal production of nuclear weapons, or (ii) theft, diversion, or sabotage of nuclear materials, equipment, or facilities.

Extracted authority passage 3

Control and physical protection of special nuclear material: limitation on dissemination of unclassified information (a)(1) In addition to any other authority or re- quirement regarding protection from dissemina-

Extracted authority passage 4

(2) The Secretary may prescribe regulations or issue orders under paragraph (1) to prohibit the dissemination of any information described in such paragraph only if and to the extent that the Secretary determines that the unauthorized dissemination of such information could reason- ably be expected to have a significant adverse effect on the health and safety of the public or the common defense and security by signifi- cantly increasing the likelihood of— (A) illegal production of nuclear weapons, or (B) theft, diversion, or sabotage of special nuclear materials, equipment, or facilities.

Extracted authority passage 5

(d) Information that the Secretary prohibits to be disseminated pursuant to subsection (a) that is provided to a State or local government shall remain under the control of the Depart- ment of Defense, and a State or local law au- thorizing or requiring a State or local govern- ment to disclose such information shall not apply to such information.

Extracted authority passage 6

(2) R EPORT ON CURRENT CALENDAR YEAR.—Not later than six months after the date of the submittal of the report most recently submit- ted under paragraph (1), the Secretary shall submit to the congressional defense commit- tees a report on the support provided under this section during the first half of the cal- endar year in which the report under this paragraph is submitted.

32 CFR 223

Listed by: NARA Registry, DoD Registry, Related authorities

Designation evidence

  • NARA authority row: 32 CFR 223 | status: Specified | banner: CUI//SP-DCNI.
  • DoD authority row: 32 CFR 223. DoD lists this citation for the category; this DoD detail page does not display a separate Basic/Specified field.
  • Related authority evidence: 32 CFR 223 | status: Specified | banner: CUI//SP-DCNI
  • Related authority evidence: DoD lists this authority for the category; the linked authority text is extracted below when available.
  • Registry designation context: Basic + Specified, CUI. The linked authority text contains category-scope or applicability language that helps determine when the information falls within this CUI category. The linked authority text contains disclosure, access, protection, release, dissemination, or distribution-control language relevant to handling. The linked authority text contains violation, penalty, sanction, or enforcement language that may affect consequences for mishandling.
  • Registry designation for this category is Basic + Specified with banner CUI.

Extracted authority meaning

  • (3) Department of the Navy.
  • Registry designation context: Basic + Specified, CUI. The linked authority text contains category-scope or applicability language that helps determine when the information falls within this CUI category. The linked authority text contains disclosure, access, protection, release, dissemination, or distribution-control language relevant to handling. The linked authority text contains violation, penalty, sanction, or enforcement language that may affect consequences for mishandling.

Operating conditions

  • NARA category scope used with this authority: Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD category scope used with this authority: Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • 32 CFR 223 | status: Specified | banner: CUI//SP-DCNI
  • DoD lists this authority for the category; the linked authority text is extracted below when available.
  • NARA registry status: Basic + Specified. Per-authority NARA status values: Basic, Specified. NARA banner marking evidence: CUI, CUI//SP-DCNI. The registry evidence is preserved here; detailed primary-law or regulation text analysis remains pending for this category.
  • NARA category scope: Relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD category scope: Information relating to Department of Defense special nuclear material (SNM), equipment, and facilities, as defined by 32 CFR 223.
  • DoD registry-required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
  • Extracted authority condition: (b) Unclassified information shall be protected as DoD UCNI based on a de- termination that the unauthorized dis- semination of such information could reasonably be expected to have a sig- nificant adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of the illegal production of nuclear weapons or the theft, diversion, or sabotage of DoD SNM, SNM equipment, SNM facilities, or nuclear weapons in DoD custody.
  • Extracted authority condition: (c) Unclassified information regard- ing physical protection of DoD SNM and nuclear weapons in DoD custody shall be made publicly available to the fullest extent possible by applying the minimum restrictions, consistent with the requirements of 10 U.S.C. 128, nec- essary to protect the health and safety of the public or the common defense and security.
  • Extracted authority condition: (1) The decision to pro- tect unclassified information as DoD UCNI shall be based on a determination that the unauthorized dissemination of such information could reasonably be expected to have an adverse effect on the health and safety of the public or the common defense and security by increasing significantly the likelihood of the illegal production of nuclear weapons or the theft, diversion, or sab- otage of DoD SNM, SNM equipment, SNM facilities, or nuclear weapons in DoD custody.
  • Extracted authority condition: Transmittal documents shall call attention to the presence of DoD UCNI attachments using an appropriate statement in the text or including at the bottom of the transmittal document a statement similar to: ‘‘The attached document contains DoD Unclassified Controlled Nuclear Information (DoD UCNI).’’

Safeguarding and dissemination controls

  • NARA registry control evidence: status Specified; banner marking CUI//SP-DCNI.
  • DoD required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
  • DoD applicable policies: DoDI 5210.83
  • Nara basic or specified: Basic + Specified
  • Nara authority rows: 10 USC 128(a) | status: Basic | banner: CUI || 32 CFR 223 | status: Specified | banner: CUI//SP-DCNI
  • Nara banner markings: CUI, CUI//SP-DCNI
  • Dod required warning statement: Department of Defense Unclassified Controlled Nuclear Information Exempt from mandatory disclosure pursuant to 5 U.S.C. 552(b)(3),as authorized by 10 U.S.C. 128
  • Dod applicable policies: DoDI 5210.83
  • No DoD required dissemination control is listed on the registry page. Apply approved limited dissemination controls only when required or permitted by the designating agency or governing authority.
  • Use the registry assertions, NARA authority rows, DoD authorities, DoD policies, warning statements, required dissemination controls, and examples first. Where the cited authority does not specify a handling detail, apply CUI Basic safeguards and dissemination rules so long as they do not conflict with the authority or agency-specific controls.
  • Extracted authority control: (c) Unclassified information regard- ing physical protection of DoD SNM and nuclear weapons in DoD custody shall be made publicly available to the fullest extent possible by applying the minimum restrictions, consistent with the requirements of 10 U.S.C. 128, nec- essary to protect the health and safety of the public or the common defense and security.
  • Extracted authority control: It is DoD policy that: (a) Unauthorized dissemination of unclassified information pertaining to security measures, including security plans, procedures, and equipment, for the physical protection of DoD SNM, SNM equipment, SNM facilities, or nu- clear weapons in DoD custody is pro- hibited.
  • Extracted authority control: (b) The Assistant Secretary of De- fense for Nuclear, Chemical, and Bio- logical Defense Programs (ASD(NCB)), under the authority, direction, and control of the Under Secretary of De- fense for Acquisition, Technology, and Logistics, shall: (1) Identify information regarding nuclear weapons security and the pro- tection of SNM at DoD nuclear reactor facilities as DoD UCNI and protect it from unauthorized dissemination, con- sistent with the requirements of 10 U.S.C. 128 and this part.
  • Extracted authority control: (3) DoD personnel, in making a deter- mination to protect unclassified infor- mation as DoD UCNI, shall consider the probability of illegal production of nuclear weapons or of theft, diversion, or sabotage of DoD SNM, SNM equip- ment, SNM facilities, or nuclear weap- ons in DoD custody if the information proposed for protection were made available for public disclosure and dis- semination.
  • Extracted authority control: (2) The decision to protect unclassi- fied information as DoD UCNI shall be based on a determination that the un- authorized dissemination of such infor- mation could reasonably be expected to have an adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of the illegal production of nuclear weapons or the theft, diversion, or sabotage of SNM, SNM equipment, SNM facilities, or nu- clear weapons in DoD custody.
  • Extracted authority control: (v) Information on mode, routing, protection, communications, and oper- ations that must be shared with law enforcement or other civil agencies, but not visible to the public.

Authority excerpts

Most relevant extracted authority passage

(c) Unclassified information regard- ing physical protection of DoD SNM and nuclear weapons in DoD custody shall be made publicly available to the fullest extent possible by applying the minimum restrictions, consistent with the requirements of 10 U.S.C. 128, nec- essary to protect the health and safety of the public or the common defense and security.

Extracted authority passage 2

It is DoD policy that: (a) Unauthorized dissemination of unclassified information pertaining to security measures, including security plans, procedures, and equipment, for the physical protection of DoD SNM, SNM equipment, SNM facilities, or nu- clear weapons in DoD custody is pro- hibited.

Extracted authority passage 3

(b) The Assistant Secretary of De- fense for Nuclear, Chemical, and Bio- logical Defense Programs (ASD(NCB)), under the authority, direction, and control of the Under Secretary of De- fense for Acquisition, Technology, and Logistics, shall: (1) Identify information regarding nuclear weapons security and the pro- tection of SNM at DoD nuclear reactor facilities as DoD UCNI and protect it from unauthorized dissemination, con- sistent with the requirements of 10 U.S.C. 128 and this part.

Extracted authority passage 4

(3) DoD personnel, in making a deter- mination to protect unclassified infor- mation as DoD UCNI, shall consider the probability of illegal production of nuclear weapons or of theft, diversion, or sabotage of DoD SNM, SNM equip- ment, SNM facilities, or nuclear weap- ons in DoD custody if the information proposed for protection were made available for public disclosure and dis- semination.

Extracted authority passage 5

(2) The decision to protect unclassi- fied information as DoD UCNI shall be based on a determination that the un- authorized dissemination of such infor- mation could reasonably be expected to have an adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of the illegal production of nuclear weapons or the theft, diversion, or sabotage of SNM, SNM equipment, SNM facilities, or nu- clear weapons in DoD custody.

Extracted authority passage 6

(b) Unclassified information shall be protected as DoD UCNI based on a de- termination that the unauthorized dis- semination of such information could reasonably be expected to have a sig- nificant adverse effect on the health and safety of the public or the common defense and security by significantly increasing the likelihood of the illegal production of nuclear weapons or the theft, diversion, or sabotage of DoD SNM, SNM equipment, SNM facilities, or nuclear weapons in DoD custody.

DoDI 5210.83

Listed by: Related authorities

Designation evidence

  • Related authority evidence: DoD lists this applicable policy for the category; the linked policy text is extracted below when available.
  • HTTP 403
  • Registry designation for this category is Basic + Specified with banner CUI.

Extracted authority meaning

  • DoDI 5210.83 authority text
  • HTTP 403
  • Authority text extraction status: http_error (HTTP 403).

Operating conditions

  • DoD lists this applicable policy for the category; the linked policy text is extracted below when available.

Safeguarding and dissemination controls

None listed