United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Automatic overload limiting unit. Norms and requirements
Materials and systems for the protection and repair of concrete structures. Requirements to injection products and filling of cracks, voids and interstices
Air transport. Safety management system of aviation activity. Safety management system safety of aviation service suppliers, ATO, organizations. Manual on safety management system of air traffic, ATO organizations
