Bhubaneswar, Dec 1: In order to keep a check on the visitors entering the Nandankanan zoo here, the zoo authorities have decided to install 46 CCTV cameras on the premises of the zoological park in the first attempt. For this around a sum of Rs 91 lakh will be spent as said by the deputy director of the zoo. The installation process will begin from Dec 7 and will be finished by Dec 20.