A mobile air hangar was installed for Moscow Refinery reconstruction in July 2021. The customer was the Rizzani de Eccher international company. The hangar with 700 m² usable floor space accommodated a workshop for steel structures painting with anticorrosive and flame retardant compositions. An autonomous oil-fired heating system installed to maintain the required temperature. The set-point temperature allows to accelerate significantly the structures painting process. In accordance with fire safety standards, the hangar was equipped with explosion-proof lighting and ventilation systems. The project implementation period was 3 weeks.