republic-os/legal/us/code/title-10/chapter-602/section-6129.md

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LegalText	10 U.S.C. § 6129	Certification of completion of milestones with respect to plutonium pit aging	us	united_states_code	code_section	10	ARMED FORCES	602	NUCLEAR WEAPONS STOCKPILE MATTERS	6129	10 U.S.C. § 6129	current	119-100	2026-06-26	official	https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc10@119-100.zip	/us/usc/t10/s6129	data/legal/raw/us/code/title-10/usc10.xml	7839935db4d9ad6cdc2f706d56093708bb49c2b0a5ec845a99039ecda9a0c873	06a2679d38355c44f4219c983fdad34009233205d6ba271593a4c1b17a739ec1	2cfc6f5ee2cb3c36bd2e28bfe8c2da3600debb2e0394f1cf327083d3c9528536	2026-07-04	official	legal us-code

10 U.S.C. § 6129 - Certification of completion of milestones with respect to plutonium pit aging

Text

(a) Requirement.— 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) Assessments.— 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) Briefings.— 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) Certification of Completion of Milestones.— 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.

(Added Pub. L. 119–60, div. C, title XXXI, § 3111(a), Dec. 18, 2025, 139 Stat. 1365.)

Notes

Editorial Notes

References in TextThe 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 ProvisionsProvisions 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).