Technical meeting: HD 1.3 issues

msiac-workshop-location-icon Virtual meeting
msiac-workshop-calendar-icon 07-12-2021 to 08-12-2021

In recent years a number of questions have arisen in relation to the handling and storage of HD 1.3 ammunition and explosives. New empirical evidence from the US, related to the confined combustion of propellants, as well as the 2018 MSIAC workshop on Improved Explosives and Munitions Risk Management (IEMRM) provide relevant information that may help answer these questions.

MSIAC was requested by AC/326 SGC to organize a technical meeting, and bring the community together.

More specifically, the questions are:

  • Is it possible to develop more quantitative criteria to distinguish between the HD 1.3 Storage subdividions: SsD 1.3.1 and SsD 1.3.2?
  • What is the basis of current NATO and US HD 1.3 Quantity Distance (QD) criteria?

    • What are the assumed or implied lethality and injury criteria?
    • Is it possible to remove or reduce the large minimum distances?
    • Is it necessary or possible to redefine HD 1.3 QD in terms of burning rate?

  • How should HD 1.3 and confinement be addressed in QD and risk analysis?

    • Is the approach taken by the US suitable for other MSIAC member nations?
    • Are confined propellant burns also relevant for other HD?

  • Can the assessment of Insensitive Munition (IM) thermal effects be improved, including thermal measurements in IM tests?



This technical meeting will be divided in a virtual part to be held 7 and 8 December 2021, daily between 14:00 CET and 19:00 CET, and a second part to be held in-person at NATO HQ in 2022 with dates TBD.
The meeting will bring together government and industry representatives from MSIAC member nations involved with hazard classification, QD and risk analysis of HD 1.3 ammunition and explosives. A detailed program as well as a repository with relevant literature will be made available closer to the meeting.
The results and recommendation from the meeting will be reported in a MSIAC limited report.


Attendance is restricted to individuals from MSIAC member nations working in the field of hazard classification, QD and risk analysis of HD 1.3 ammunition and explosives. This will be verified by the MSIAC National Focal Point Officers (NFPO).
Registration takes place by filling out your personal details below, as well as by answering a short survey in relation to the meeting topics.

Call for papers

We already have a full agenda for 7 and 8 December, so the call for papers has ended. However, if you have any relevant information on the aforementioned topics please feel free to share this with us by sending an email to: Also send us an email if you would like to have more information including the preliminary program.