The Influence of Water Quality Change on the Corrosion Process in Galvanized Pipes of Fire Protection Installations

Małgorzata Wojtkowska, Agnieszka Malesińska, Agnieszka Machowska, Pierfabrizio Puntorieri, Giuseppe Barbaro, Vincenzo Fiamma and Stanisław Biedugnis
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Małgorzata Wojtkowska: Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, 00-653 Warsaw, Poland
Agnieszka Malesińska: Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, 00-653 Warsaw, Poland
Agnieszka Machowska: Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, 00-653 Warsaw, Poland
Pierfabrizio Puntorieri: DICEAM Department, University Mediterranea of Reggio Calabria, 89122 Reggio Calabria, Italy
Giuseppe Barbaro: DICEAM Department, University Mediterranea of Reggio Calabria, 89122 Reggio Calabria, Italy
Vincenzo Fiamma: DICEAM Department, University Mediterranea of Reggio Calabria, 89122 Reggio Calabria, Italy
Stanisław Biedugnis: The Main School of Fire Service, 01-629 Warsaw, Poland

Sustainability, 2022, vol. 14, issue 13, 1-18

Abstract: The article presents the results of an investigation of water composition and quality in sprinkler installations, as well as the influence of temperature changes on the corrosion process. The physical and chemical components of the water were measured to ascertain the influence of its properties on the corrosion process in a wet pipe sprinkler system operating in significantly changing ambient temperature conditions. The article presents the results of measurements of the wall thickness of galvanized pipes and changes in the chemical composition of water occurring under the influence of variable ambient temperature. The range and variability of temperatures corresponded to the seasons of the year: spring and summer in a temperate climate. Changes in the corrosive aggressiveness of water were assessed using the Langelier saturation index (LSI), the Ryznar stability index (RSI), and the general acidity intensity index (I). The tests revealed that the tap water used demonstrated strong corrosive properties for galvanized pipes. The calculated indices showed the tendency of water to cause corrosion (−1.1 > LSI < 1.0; RSI = 7.1–12.8). The chemical parameters that significantly influenced the corrosion of galvanized pipes are chloride (Cl − ), sulphate (SO 4 2− ), and bicarbonate (HCO 3− ) ions. An important factor contributing to the intensification of corrosion is the roughness and heterogeneity of the pipe surface.

Keywords: fire protection systems (FPS); galvanized pipes; white corrosion; water temperature (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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