The experience of introducing TV-inspection of sewers

Summary

Sustainable operation of utility distribution systems is an essential condition of ensuring comfortable life in megacities. Integrity and long operational life are the main requirements to the different-purpose pipelines (gas and water supply, sewers etc.). Regular TV-inspections of sewer condition provide for more efficient distribution of operation and repair expenditures, reduction of emergency repairs. The practical experience of establishing a TV-inspection laboratory in «Tumen Vodokanal» LLC and the results of its activities during 2011–2013 are presented. TV-inspection is an advanced technology of evaluating technical condition of underground utility distribution pipelines and engineering structures. The efficiency of the pipeline TV-inspection method when introduced into the flow process is shown. For the entire period of operation the TV-inspection laboratory specialists have investigated more than 350 objects, i. e. more than 46 kilometers of sewers, among them 30 kilometers of newly built networks. By means of using TV-inspection the time for determining the causes and locating blockages, leaks and other sewer pipe failures is reduced. Therefore, the amount of excavating and hence the general cost of repair works is reduced. Significant improving the culture and quality of construction works is an unconditional success of the laboratory activities. During two and a half years of the laboratory operations the number of facilities approved for operation on the first try increased more than 10-fold, whereas the number of defects to be eliminated with relaying or repair of pipe sections reduced more than 20-fold.

Key words

diagnostics , reliability , assessment of technical state , pipeline , TV-inspection , videocamera

Wastewater Vacuum Pumping Plant

Summary

The experience in introduction of modern technologies of MGUP Mosvodokanal in the course of reconstruction of sewerage gravity-flow conduits and collectors including with use of vacuum pumping of wastewater is described.

Key words:

sewer system , reconstruction , diagnostics , siphon , polyethylene , vacuum , pumping

Stages of development of repair methods for water distribution
and sewer networks

Summary

The construction of water distribution and sewer networks in Novokuznetsk was carried out in 1950–1970 with the rapid development of the industrial city. Today Vodokanal LLC is the main provider of cold water supply and wastewater disposal services to the population and industries in Novokuznetsk. In the 1990s, the conditions of the networks and the economic situation in the country required the search for advanced time-effective construction and repair technologies at minimum use of resources and finance for the most efficient performance of work. Today, the attitude of the enterprise for search for technically new, while also cost-effective, methods of repairing water distribution and sewer networks allow providing consumers with high-quality drinking water as one of the factors of sanitary and epidemiological well-being, improving the efficiency, reliability and quality of operations of the municipal drinking water supply and wastewater disposal facilities.

Key words

diagnostics , rehabilitation , gas corrosion , rehabilitation , water distribution and sewer networks , HD polyethylene , corrugated polypropylene , steel sewer wear , pipe locator , leak detection , teleinspection float raft , multifunctional mobile emergency-repair vehicle