DOI 10.35776/MNP.2020.02.08
UDC 628.144:614.842.62:006.015.7

Optimization of the choice of diameters of the pipelines
in the water distribution network considering the fire safety

Summary

With the arrangement of combined drinking water and fire water supply systems, the importance of the distribution network increases even more, since additional functions are assigned to provide for the transportation of large amounts of water for firefighting. Meeting the firefighting requirements in conditions of a significant reduction in water consumption in most cities of Russia leads to negative consequences associated with low (0.1–0.3 m/s and less) flow rates and stagnation of water in some sections of the distribution network. Thereby, the organoleptic properties of water may deteriorate expressed in the appearance of flavors, unpleasant odors, increased turbidity and color, etc. In this regard, measures are required to optimize the choice of pipe diameters, to ensure and maintain the required quality of transported water in outdoor urban and distribution networks, and to guarantee meeting the required fire extinguishing standards. The research results and hydraulic calculations for assessing the minimum permissible water flow rates and minimum pipe diameters of submain networks are given taking into account the provision of external and internal firefighting. The tests were carried out in real conditions of the municipal water supply ring main in high- and low-pressure zones.

Key words

water consumption , flow rate , water supply network , head , water supply system , firefighting , velocity , nodal abstraction

Скачать/download (PDF) free access

REFERENCES

Ivanov E. N. [On the calculation of water consumption for firefighting in the cities. Pozharnaia Tekhnika i Tushenie Pozharov]. Moscow, VNIIPO MVD SSSR, 1974, is. 12, pp. 50–56. (In Russian).
Panin E. N. Optimizatsiia parametrov tusheniya pozharov v zhilykh zdaniiakh povyshennoi etazhnosti [Optimization of fire extinguishing parameters in multistory residential buildings. Synopsis of a thesis for Ph. D. Degree in Engineering. Мoscow, VIPTSH MVD SSSR, 1991, 184 p.].
Boosting water to new heights in cases of low pressure. World Pumps, 2007, no. 485, pp. 14–15.
Hofmann H. Die Bereitstellung von loschwasser aus dem trinkwasserrohrnetz. BBR, 2005, no. 12, pp. 20–29.
Ivanov E. N. Teoriia, raschet i printsipy postroeniia sistem pozharnogo vodosnabzheniia [Theory, calculation and construction principles of fire water supply systems. Synopsis of a thesis for Doctoral degree in Engineering. Мoscow, MISI im. V. V. Kuibysheva, 1980, 438 p.].
Gotlos’ G. Vtrati void v mis’kikh vodoprovidnikh merezhakh u Pol’shchi [Втрати води в мiських водопровiдних мережах у Польщi]. Rinok Instaliatsii, 2004, no. 9, pp. 14–17. (In Ukrainian).
Ehrensberger J. Ertuchtigung und sanierung der wasserversorgungsanlage gera. DVGW: Energie Wasser-Praxis, 2004, 55, no. 1, pp. 16–18.
Abrosimov Iu. G., Kiselev L. Iu. [Regulation of fire water supply for cities with a population of more than a million people]. Pozhary i Chrezvychainye Situatsii: Predotvrashchenie, Likvidatsiia, 2008, no. 1 (9), pp. 14–21. (In Russian).
Ivanov E. N. Raschet i proektirovanie sistem pozharnoi zashchity [Calculation and design of fire protection systems. Мoscow, Khimiia Publ., 1977, 376 p.].
Pozhary i pozharnaia bezopasnost’ v 2016 godu: Statisticheskii sbornik [Fires and Fire Safety in 2016: Statistical Digest. Under the editorship of Gordienko D. M. Мoscow, VNIIPO, 2017, 124 p.].
Rodionov E. G. Reshenie kompleksa zadach organizatsii pozharotusheniia v naselennykh punktakh [The solution of the complex tasks of establishing firefighting in settlements Synopsis of a thesis for Ph. D. degree in Engineering. Мoscow, AGPS MVD Rossii, 2001, 272 p.].
Roscher H. Flachendeckende rehabilitation von wasserrohrnetzen. Wasserwirtschaft Wassertechnik, 2003, no. 1–2, pp. 36–40.
Esmailzadeh K. [Pat. 6170514, USA. IPC 7F16K 21/00, E03B 3/00, N09/233396. City water flushing and sludge prevention control apparatus]. NPK 137/238, USA, 2001.
Primin O. G., Khramenov S. V. [Problems of the current state of water supply and sanitation systems in Russia]. Chistaia Voda: Problemy i Resheniia, 2012, no. 3–4, pp. 40–48. (In Russian).