DAFMAN91-118 — Safety Design Criteria For Nuclear Weapon Systems

DAFMAN91-118 governs safety design criteria for nuclear weapon systems, including their design, development, modification, evaluation, operation, and acquisition.

Search DAFMAN91-118

  • Publication number: DAFMAN91-118
  • Title: SAFETY DESIGN CRITERIA FOR NUCLEAR WEAPON SYSTEMS
  • Date: 2025-07-17

View DAFMAN91-118 on armypubs.army.mil


It covers nuclear weapon system safety philosophy, general and electrical design, hazard prevention, and arming and fuzing systems. Compliance with the publication is mandatory, and its requirements use tiered waiver authorities.

Applies to: It applies to all organizations that design, develop, modify, evaluate, operate or acquire a nuclear weapon system.

Topics covered

  • Nuclear weapon system safety design
  • Energy and information control systems
  • Nuclear critical functions
  • Electrical design
  • Hazard prevention
  • Arming and fuzing systems

Questions and answers

What happens when DAFMAN91-118 conflicts with higher-level guidance?

If there is conflicting guidance between this DAFI and any DoD series or published higher-level guidance, the DoD series or published higher-level guidance takes precedence.

How are waiver authorities identified in DAFMAN91-118?

The authorities to waive wing, unit, or delta level requirements in this publication are identified with a Tier (“T-0, T-1, T-2, T-3”) number following the compliance statement.

Where should waiver requests for DAFMAN91-118 be submitted?

Submit requests for waivers through the chain of command to the appropriate Tier waiver approval authority, or alternately, to the requestor’s commander for non-tiered compliance items.

Ask Reggie.Bot a question about DAFMAN91-118