SOFIA (Bulgaria), April 9 (SeeNews) – Bulgaria's sole nuclear power plant (NPP) Kozloduy has awarded a 9.6 million lev ($5.3 million/4.9 million euro) contract for maintenance works on its units 5 and 6 to local engineering company Energoremont Holding [BUL:6EG], a notice in the EU’s procurement journal indicated on Thursday.