SRI International, a not-for-profit research organization chartered in the United States, has been tasked to evaluate the safety of hydrogen in various operations and processes of the World Energy Network (WE-NET) system. Based on the available experimental data and advanced computer simulation of explosion accidents, SRI has developed a novel computer program called accident analysis computer algorithm (AACA)* that employs the pressure-impulse (PI) methodology to quickly calculate the response of humans and structures to postulated explosion accidents. The results are displayed graphically in the form of color contours of equal damage levels. Because the probability of occurrence is included as part of the PI isodamage curves, the AACA can also function as a probabilistic risk assessment tool. Also, an economic analysis module can be incorporated into the AACA to allow the safety engineers to find the most cost-effective solution to hazards mitigation. The load-damage correlations used in this algorithm are being expanded to include other WE-NET accident scenarios.