Strategy for repair and reconstruction of clean water tanks

Summary

The tank farm of water supply systems in Russia is represented mainly by reinforced concrete tanks of various volumes. Due to their long service life, often exceeding the standard, these facilities have specific defects and damage that reduce their operational reliability. Analysis of the results of technical inspections of tanks of different design, capacity, and service life indicates that the defects and damage are related either to physical deterioration of the structures because of corrosion or to the uneven earth foundation settling. This damage and deformation of the structures result in loss of tank integrity. Restoring the operational reliability of structures is possible two-ways: capital repairs or reconstruction. Currently, the domestic regulatory framework lacks documents regulating the choice of repair and reconstruction methods for drinking water supply tanks. The study materials are presented that can be used as a substantiation of draft regulations including a list of tank repair and reconstruction works, as well as the technology. Performing these works will provide for the reliability of tanks with varying service lives, both until the end of their standard service life and for the subsequent design period.

Key words

protection from corrosion , clean water tank , эксплуатационная надежность конструкций , structural damage , integrity restoration , durability of reinforced concrete , service life , repair and reconstruction