Modelowanie systemu eksploatacji sieci gazowych użytkowanych na terenach górniczych.

Problems presented in the paper are concered with operation of gas networks in mining area where significant terrain's deformations can occur and each failure makes human lives hazard. Since many years some standard methods to meat the treat of failures are practised in such area, with the aim to give elasticity to the network as well as materials and modern design-assembly solution introduction. New design-technological solution change the failure susceptibility of a network. Anyway, till time there is lack of effective method for quality assesment of those changes. Also, up to now there is lack of complex formulation of these problems regarding on reliability and operational safety of gas network in such area. Developed methods of operational system modelling together with development of reliability theory both supply new tools for system analysis execution for assessment and prediction of safe utilisation of steel gas pipelines.