Innovation in corrosion monitoring in sewers - use of novel photonic sensors for humidity measurements in gravity sewers

Bustamante, Heriberto; Alwis, Lourdes S M; Grattan, Kenneth T. V.; Sun, Tong; Vorreiter, Louisa; González, José

Abstract

Humidity plays a key role in microbiologically induced corrosion of concrete gravity sewers. Minor reductions in humidity can reduce corrosion rates. No reliable long lived (>1 week) humidity sensors are available, thus limiting the development of useful models to better manage corrosion. This paper describes the successful evaluation of purpose built photonic sensors for five months in the sewer. Survival of the photonic sensors in this environment demonstrated their suitability for longer-term sewer monitoring. The use of photonic sensors provided on-line, long term, continuous humidity data in a way that was not possible in gravity sewers prior to this study.

Citation

Bustamante, H., Alwis, L. S. M., Grattan, K. T. V., Sun, T., Vorreiter, L., & González, J. (2017). Innovation in corrosion monitoring in sewers - use of novel photonic sensors for humidity measurements in gravity sewers. Water e-journal, 2(4), 1-6. https://doi.org/10.21139/wej.2017.038

• Journal Article Type: Conference Paper
• Conference Name: Ozwater'17
• Start Date: May 16, 2017
• End Date: May 18, 2017
• Acceptance Date: Jul 11, 2017
• Publication Date: Nov 14, 2017
• Deposit Date: Sep 28, 2017
• Publicly Available Date: Sep 28, 2017
• Journal: Water e-journal
• Electronic ISSN: 2206-1991
• Publisher: Australian Water Association
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Issue: 4
• Pages: 1-6
• DOI: https://doi.org/10.21139/wej.2017.038
• Keywords: Microbiology, FBG, fibre bragg grating, optical fibre sensors, corrosion.
• Public URL: http://researchrepository.napier.ac.uk/Output/991609