DAFI91-205 — Non-nuclear Munitions Safety Board

DAFI91-205 governs the Non-Nuclear Munitions Safety Board, including munitions safety certification, hazard analyses, and risk management.

Search DAFI91-205

  • Publication number: DAFI91-205
  • Title: NON-NUCLEAR MUNITIONS SAFETY BOARD
  • Date: 2023-03-30

View DAFI91-205 on armypubs.army.mil


DAFI91-205 addresses non-nuclear munitions, weapon-system safety analysis, hazard probabilities, risk mitigation, and validated urgent operational needs. It requires safety certification, documented hazard assessments, risk analysis, and eventual full design certification for permanent operational use.

Applies to: This instruction applies to all DAF civilian employees and uniformed members of the Regular Air Force, United States Space Force (USSF), Air Force Reserve, Air National Guard (ANG), and those with a contractual obligation to abide by the terms of DAF issuances, except where noted otherwise.

Topics covered

  • Non-nuclear munitions safety certification
  • Weapon-system hazard analysis
  • Hazard probability assignment
  • Risk management
  • Validated urgent operational needs
  • Item-level hazard assessments
  • NNMSB memorandum approval

Questions and answers

What is required before new non-nuclear munitions enter the USAF or USSF inventory?

Prior to entry of new non-nuclear munitions into the USAF/USSF inventory, regardless of source, AF/SE certification of NNMSB safety and hazard analyses is required.

What hazard requires safety analysis for Air Force munitions under NNMSB purview?

For all Air Force munitions under NNMSB purview, “inadvertent warhead detonation” is a mandatory hazard that requires safety analysis. (paragraph 51-401)

Who assigns hazard probabilities at the item level?

For all items under NNMSB purview, the NNMSB retains exclusive authority to assign hazard probabilities at the item level, regardless of any risk mitigations implemented at higher system levels. (paragraph 51-401)

What must be documented for an urgent need involving an item under NNMSB purview?

If an urgent need involves fielding an item under NNMSB purview (see sections 2.2, 2.3, and 2.4), item-level safety hazards will be documented in a memorandum signed by the Chair of the Non-Nuclear Munitions Safety Board (NNMSB). (paragraph 6)

When must full NNMSB design certification be pursued after urgent-need approval?

Not later than 180 days from NNMSB Validated Urgent Need Memorandum approval, the Program Manager will pursue full NNMSB design certification for permanent operational use in accordance with Chapters 4 and 5. (paragraph 6)

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