Project of twin containerized substations for blast resilient environment (16×3,2×3,8)m. These modular units are located in Nigeria. One of the requirements for the custom-made containers was that both units can be assembled in order to create on big open space. Therefore, one long wall of each of the containerized substations was open in order to create such space. Given the characteristic of the facility where these modules are located, another requirement was a blast resistance of the containers. Both special modules must withstand a blast wave of 260mbar@23 ms. Therefore, the substations were fitted with reinforced walls. Both custom-made containers are fitted with false flooring, special fire rated insulation of A60 and paint job for C5M environment, done under supervision of NACE inspector.