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Investigation of Pipe Failures in Sprinkler Systems: A Case Study

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Abstract:

This study investigates the cause of in-service failure in a sprinkler system pipe, focusing on the material condition and the presence of perforated areas. The research involves a comprehensive analysis of the pipe material, including its: chemical composition analysis, macroscopical and microstructural examinations, tensile and HV10 hardness testing. The study case also examines the characteristics of the perforated areas, such as their size, shape, and distribution. Through a combination of material characterization techniques and failure analysis methods, the research aims to identify the root cause of the pipe failure, including potential contributing factors such as corrosion, stress cracking or manufacturing defects. The findings provide valuable insights into the mechanisms of failure in sprinkler systems and contribute to the development of strategies for preventing similar incidents in the future. From the analysis of the materials/sections received from the beneficiary, it follows that there is both a difference in nominal wall thickness between the material from the old system and that from the new system, put into operation in 2020, of approximately 1 mm, a difference in metallographic structure in longitudinal and transverse direction, as well as difference in mechanical characteristics.

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Periodical:

Key Engineering Materials (Volume 1031)

Pages:

35-43

DOI:

https://doi.org/10.4028/p-Z3rI8Q

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Online since:

November 2025

Authors:

Iuliana Duma*, Emilia Dobrin, Gabriela Marginean, Raluca Faur, Alma Afezolli, Ion Aurel Perianu, Radu Nicolae Popescu

Keywords:

In-Service Failure, Pipe Failure, Sprinkler Systems Pipe

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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References

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DOI: 10.1007/s11668-022-01397-7

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