National Nuclear Security Administration

W80-4 LEP, Mk21 Fuze Replacement modernization programs on-time, on-budget

September 15, 2017

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A Sandia team determines frequency and amplitude for a vibration test for the W80-4 LEP. The program is committed to on-time, on-budget delivery.

The W80-4 Life Extension Program (LEP) and the Mk21 Fuze Replacement program are both led by the Sandia National Laboratory in California, which has a commitment to on-time and on-budget delivery in support of the nuclear weapons mission and in accordance with customer requirements.

Director Mike Hardwick says both programs are on track to achieve these goals. All scheduled milestones have been met, which ensures the safety, security, and reliability of the nation’s nuclear weapons stockpile.

“The California-based weapon modernization programs represent a significant investment of financial and staff resources,” Hardwick said. “We work closely with our New Mexico colleagues, our partners across the nuclear weapons enterprise, and our customers to ensure successful planning and execution.”

The W80-4 LEP and Mk21 Fuze replacement program are two of four major modernization programs being carried out at Sandia, with the other two being the B61-12 LEP and W88 ALT 370. Together, these efforts represent the largest nuclear weapon development investment at Sandia in decades.

W80-4 system staff and colleagues in electrical sciences review assembly procedures in preparation for testing.