Institute of Makers of Explosives Safety Analysis for Risk (IMESAFR) is a probabilistic risk assessment tool used to calculate risk to personnel from explosives facilities. This tool is a supplement to the longstanding American Table of Distances. Whereas the ATD provides a level of safety based on explosives quantity and distance, IMESAFR determines a level of safety based upon risk. In addition to explosives quantity and distance, IMESAFR uses the donor structure, the activity at the donor, and the structure of the exposed sites to determine the level of safety.

System Requirements

IMESAFR is executable on Windows 7, 8, 8.1, and 10. Windows 7 is the minimum recommendation for running IMESAFR. Currently, neither MacOS nor Linux are supported. A minimum of 4 GB of RAM is recommended for running IMESAFR scenarios.


IME requires that all users of IMESAFR receive training from APT on the usage of the code as a condition of purchase. Special circumstances may be considered at IME’s discretion.

Purchase Training Vouchers and Software

APT Point of Contact

Mary Robinson 256-327-3373