HYDERABAD: The Hyderabad Metropolitan Water Supply and Sewerage Board will use trenchless technology for replacing trunk sewers with minimum disruption. The Delhi Jal Board has been using trenchless technology 'cured-in-place piping' (CIPP) for replacing sewer lines in its jurisdiction. According to officials, there were 612 km of 600 mm diameter or above sewer network in city and nearly 1.85 lakh manholes. As over 90% of that was laid decades ago, it was suffering damages. On September 21, a trunk sewer got damaged near NTR Garden . The 5.5-km trunk sewer was laid between Divya Shakthi Apartment, Ameerpet, and GHMC head office surplus nala. In view of the damage, officials decided to adopt the latest technology. A threemember team visited Delhi Jal Board work sites to study the CIPP system."The team visited Govindpur and Kalkaji area, where Delhi Jal Board is using CIPP system, a jointless, seamless, pipe-within-a-pipe system. A pipe will be inserted from one manhole to another without a human entering the sewer," HMWS&SB director-operations, G Rameshwar Rao, who visited Delhi, told TOI. The team decided to use CIPP on the Divya Shakthi ApartmentGHMC main office sewer main. According to estimates, the water board needs Rs 80 crore to take up the work. Tenders would be floated once the government gives the nod to take up the work, he said.

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