A technology of pre-design comparative assessment of hazardous industrial facilities alternative location options is
described in this paper. The technology was designed by the St. Petersburg ecologic and design company Eco-ExpressService LLC. Options’ comparison is carried out in two stages using a score/ranking multi-criteria assessment: at first,
the determination and comparison of environmental safety criteria, and then – a summary assessment of all set of criteria.
4 competitive methods are used for consolidation of obtained results into general comparative scoring. These methods
differ in specification degree of the criteria indicator significance and interrelation of different types of object. Stages
of technology application are illustrated with concrete examples. The pre-design comparative assessment technology
was tested for alternative options of the Russian section of the Nord Stream 2 offshore gas pipeline and the Complex for
processing ethane-containing gas on the territory of the Kingisepp municipal district of the Leningrad region. Main positive effects and advantages of its use are determined by the increase of construction environmental safety and essential
economy of the federal, regional and local budgets and investors by eliminating unfavourable object location options at
early stages of development.
Keywords: environmental safety, production facility, technology of assessment, criteria, anthropogenic impact