certification and implementation on open tender basis for i) iso - 14001:2015 of bilaspurrailway station and (ii) ims (iso-9001:2015, iso-14001:2015 and ohsas-18001:2007) ofcoaching depot/ bilaspur and bcn depot/bilaspur and (iii) water audit of bilaspur railwaystation (iv) energy audit of bilaspur railway station.bidding type normal tender .