§6129 — Title 10 Armed Forces | U.S. Code

§6129 Certification of completion of milestones with respect to plutonium pit aging

Title 10 › Subtitle Subtitle A— - General Military Law › Part PART VI— - ELEMENTS OF DEPARTMENT OF DEFENSE AND OTHER MATTERS › Subpart Subpart B— - Atomic Energy Defense › Chapter CHAPTER 602— - NUCLEAR WEAPONS STOCKPILE MATTERS › Subchapter SUBCHAPTER I— - STOCKPILE STEWARDSHIP AND WEAPONS PRODUCTION › § 6129

Last updated Apr 6, 2026|Official source

Summary

Finish the milestones listed in the report called "Research Program Plan for Plutonium and Pit Aging," which was published in September 2021. Within one year after the law passed and through December 31, 2030, the Administrator must hold reviews every two years with the Defense Programs Advisory Committee and try to arrange for the private science group JASON to do an assessment by 2030. The Administrator must give Congress every-two-year briefings on progress and the assessment results. By October 1, 2031, the Administrator must tell Congress whether the milestones are done. If not done, the Administrator must explain why, say if a milestone cannot be met, and give new completion dates.

Title 10, §6129

Armed Forces — Source: USLM XML via OLRC

(a)The Administrator shall complete the milestones on plutonium pit aging identified in the report entitled “Research Program Plan for Plutonium and Pit Aging”, published by the Administration in September 2021.

(b)The Administrator shall—

(1)acting through the Defense Programs Advisory Committee, conduct biennial reviews during the period beginning not later than one year after the date of the enactment of this Act and ending December 31, 2030, regarding the progress achieved toward completing the milestones described in subsection (a); and

(2)seek to enter into an arrangement with the private scientific advisory group known as JASON to conduct, not later than 2030, an assessment of plutonium pit aging.

(c)During the period beginning not later than one year after the date of the enactment of this Act and ending December 31, 2030, the Administrator shall provide to the congressional defense committees biennial briefings on—

(1)the progress achieved toward completing the milestones described in subsection (a); and

(2)the results of the assessments described in subsection (b).

(d)Not later than October 1, 2031, the Administrator shall—

(1)certify to the congressional defense committees whether the milestones described in subsection (a) have been achieved; and

(2)if the milestones have not been achieved, submit to such committees a report—

(A)describing the reasons such milestones have not been achieved;

(B)including, if the Administrator determines the Administration will not be able to meet one of such milestones, an explanation for that determination; and

(C)specifying new dates for the completion of the milestones the Administrator anticipates the Administration will meet.

Notes & Related Subsidiaries

Editorial Notes

References in Text

The date of the enactment of this Act, referred to in subsecs. (b)(1) and (c), is the date of enactment of Pub. L. 119–60, which was approved Dec. 18, 2025.

Prior Provisions

Provisions similar to those in this section were contained in section 3124 of Pub. L. 117–263, which was set out as a note under section 2538a of Title 50, War and National Defense, prior to repeal by Pub. L. 119–60, § 3111(b)(11).