Conducted on large-scale computerization of public administration generates as many opportunities and threats for the efficiency of this process. One of these risks is independent, non-standardized processes with different results, which should be identical or at least comparable. The automation of such processes leads to the fixation of their shortcomings and in the implementation of the integrated IT system causes problems and reduces the efficiency of the implementation (by extending the time and cost, and sometimes even by blocking im-plementation). The proposed solution is to conduct in-depth analysis and standardization of processes before implementing an integrated IT system. The aim of the article is to present a method of standardization of pro-cesses and to demonstrate its utility on selected examples of units of public institutions. The presented method is one of the NCBiR project products, titled: A highly specialized platform supporting civilian planning and rescue in the public administration of Poland and in organizational units National Firefighting and Rescue System.