Fukushima Daichii accident attracted attention to one important factor for nuclear
reactors safety – overcoming the high hydrogen emissions under accident conditions. The
coating on zirconium-based cladding is one of significant approach to protecting the cladding
materials from corrosion, accelerated oxidation at high temperature, embrittlement and (oxygen
and hydrogen) uptake at aggressive water-chemical environments inside the core of Light Water
Reactors (LWR). This paper presents a compact review of the most common technologies used
to apply coating on zr-based cladding superstrates. The paper also discusses the coating materials,
substrate preparations and recent advances in deposition techniques