From wikipedia
Sarcophagus replacement
Main article: New Safe Confinement
On 17 September 2007 it was announced that a new steel containment structure would be built to replace the aging and hastily built sarcophagus that currently protects reactor core #4. The project, financed by an international fund managed by the European Bank for Reconstruction and Development, will be designed and built by the French-led consortium Novarka, which includes the companies Bouygues and Vinci. Novarka will build a giant arch-shaped structure out of steel, 190 m wide and 200 m long to cover the old crumbling concrete dome that is currently in use.
It is expected to take a year to design the new building and another two years to build it. The steel casing project is expected to cost $1.4 bn (£700 m, ?1bn). A separate deal has also been made with the U.S. firm Holtec to build a storage facility within the exclusion zone for nuclear waste which has been produced by Chernobyl.
Fucking, what an epic fail Chernobyl was