Korea's state-run energy firms and private entities are closer to winning a deal to build a nuclear waste treatment facility in Romania, according to market watchers, Tuesday. Korea Hydro & Nuclear Power (KHNP), Korea Electric Power Corp. Engineering & Construction (KEPCO E&C), Hyundai E&C and Samsung C&T have cleared a quality screening test commissioned by SN Nuclearelectrica S.A. (SNN), a partially state-owned Romanian nuclear energy company.