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Garmabaki, A. S., Thaduri, A., Hedström, A., Kumar, U., Laue, J., Marklund, S., . . . Indahl, S. (2019). A Survey on Underground Pipelines and Railway Infrastructure at Cross-Sections. In: Michael beer, Enrico Zio (Ed.), ESREL-2019: . Paper presented at ESREL 2019 | European Safety and Reliability Conference.
Open this publication in new window or tab >>A Survey on Underground Pipelines and Railway Infrastructure at Cross-Sections
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2019 (English)In: ESREL-2019 / [ed] Michael beer, Enrico Zio, 2019Conference paper, Published paper (Refereed)
Abstract [en]

Underground pipelines are an essential part of the transportation infrastructure. The structural deterioration of pipelines crossing railways and their subsequent failures are critical for society and industry resulting in direct and indirect costs for all the related stakeholders. Pipeline failures are complex processes, which are affected by many factors, both static (e.g., pipe material, size, age, and soil type) and dynamic (e.g., traffic load, pressure zone changes, and environmental impacts). These failures have serious impacts on public due to safety, disruption of traffic, inconvenience to society, environmental impacts and shortage of resources. Therefore, continuous and accurate condition assessment is critical for the effective management and maintenance of pipeline networks within transportation infrastructure. The aim of this study is to identify failure modes and consequences related to the crossing of pipelines in railway corridors. Expert opinion have been collected through two set of questionnaires which have been distributed to the 291 municipalities in the whole Sweden. The failure analysis revealed that pipe deformation has higher impact followed by pipe rupture at cross-section with railway infrastructure. For underground pipeline under railway infrastructure, aging and external load gets higher ranks among different potential failure causes to the pipeline.

Keywords
Underground Pipelines, Transportation Infrastructure, Railway, Maintenance, FMEA
National Category
Reliability and Maintenance Water Engineering Geotechnical Engineering
Research subject
Structural Engineering; Traffic Engineering
Identifiers
urn:nbn:se:ltu:diva-76471 (URN)10.3850/978-981-11-2724-3_ 0037-cd (DOI)978-981-11-2724-3 (ISBN)
Conference
ESREL 2019 | European Safety and Reliability Conference
Projects
PipeXrail
Funder
Vinnova, 2016-033113
Note

We gratefully acknowledge the funding provided by Sweden’s Innovation Agency, Vinnova, through the Strategic Innovation Programme InfraSweden2030. The funding was granted in competition within the Open Call “Condition assessment and maintenance of transport infrastructure – Grant No. 2016-033113”. In addition, the technical support and collaboration of, Arrsleff Rörteknik, Luleå Railway Research Center (JVTC) and the Swedish Transport Administration (Trafikverket) are greatly appreciated

Available from: 2019-10-22 Created: 2019-10-22 Last updated: 2019-10-22
Vidal, B., Hedström, A., Barraud, S., Kärrman, E. & Herrmann, I. (2019). Assessing the sustainability of on-site sanitation systems using multi-criteria analysis. Environmental Science: Water Research & Technology, 5, 1599-1615
Open this publication in new window or tab >>Assessing the sustainability of on-site sanitation systems using multi-criteria analysis
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2019 (English)In: Environmental Science: Water Research & Technology, ISSN 2053-1400, Vol. 5, p. 1599-1615Article in journal (Refereed) Published
Abstract [en]

Small on-site sanitation systems are widely present in suburban and rural areas in many countries. As these systems often underperform and have an impact on receiving waters, understanding their overall sustainability is of interest for policy and decision-makers. However, the definition and estimation of indicators defining sustainability are challenging, as it is finding the methodological approach to combine qualitative and quantitative indicators into one comprehensive assessment. In this study, twelve indicators defined by environmental, economic, social, technical and health-related criteria were used to compare nine alternatives of on-site sanitation for single households. A non-compensatory method for multi-criteria decision analysis, ELECTRE III, was used for the assessment together with weights assigned to each indicator by a reference group. Several scenarios were developed to reflect different goals and a sensitivity analysis was conducted. Overall, the graywater–blackwater separation system resulted as the most sustainable option and, in terms of polishing steps for phosphorus removal, chemical treatment was preferred over the phosphorus filter, both options being implemented together with sand filters. Assessing the robustness of the systems was a crucial step in the analysis given the high importance assigned to the aforementioned indicator by the stakeholders, thus the assessment method must be justified. The proposed multi-criteria approach contributes to aid the assessment of complex information needed in the selection of sustainable sanitation systems and in the provision of informed preferences.

Place, publisher, year, edition, pages
Cambridge: Royal Society of Chemistry, 2019
Keywords
ELECTRE III, package plant, phosphorus removal, sand filter, small-scale, source separation
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-75465 (URN)10.1039/c9ew00425d (DOI)000482436200009 ()
Funder
Swedish Research Council Formas, 942-2015-758
Note

Validerad;2019;Nivå 2;2019-09-13 (johcin)

Available from: 2019-08-09 Created: 2019-08-09 Last updated: 2019-09-13Bibliographically approved
Pericault, Y., Bruaset, S., Ugarelli, R., Viklander, M. & Hedström, A. (2019). Correcting for the impact of past coordination on the estimation of pipe cohorts survival functions. In: : . Paper presented at 9th International Conference on Sewer Processes & Networks, Aalborg Denmark, August 27-30 2019.
Open this publication in new window or tab >>Correcting for the impact of past coordination on the estimation of pipe cohorts survival functions
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2019 (English)Conference paper, Oral presentation with published abstract (Other academic)
Keywords
Asset management, coordinated replacement, cohort survival functions
National Category
Water Engineering Infrastructure Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-75082 (URN)
Conference
9th International Conference on Sewer Processes & Networks, Aalborg Denmark, August 27-30 2019
Funder
Swedish Research Council Formas
Available from: 2019-06-27 Created: 2019-06-27 Last updated: 2019-09-20
Søberg, L., Viklander, M., Blecken, G.-T. & Hedström, A. (2019). Reduction of Escherichia coli, Enterococcus faecalisand Pseudomonas aeruginosa in stormwater bioretention: Effect of drying, temperature and submerged zone. Journal of Hydrology X, 3, Article ID 100025.
Open this publication in new window or tab >>Reduction of Escherichia coliEnterococcus faecalisand Pseudomonas aeruginosa in stormwater bioretention: Effect of drying, temperature and submerged zone
2019 (English)In: Journal of Hydrology X, ISSN 2589-9155, Vol. 3, article id 100025Article in journal (Refereed) Published
Abstract [en]

The impact of drying and temperature on the reduction of Escherichia coliEnterococcus faecalis and Pseudomonas aeruginosa in stormwater bioretention systems with and without a submerged zone was assessed using 16 pilot-scale bioretention columns under controlled laboratory conditions. The experimental design enabled analysis of possible interactions between the factors. First outflow and event-based samples were collected. Outflow concentrations were independent of inflow concentrations and hence controlled by internal processes. Overall TSS removal was high but sensitive to bacterial synthesis. Event-based samples had significantly higher bacteria concentrations than first outflow samples, suggesting that remaining/surviving bacteria in the bioretention cells have little effect on initial peak outflow concentrations. The effect of temperature varied between bacterial species and sample types. Long dry periods seemed beneficial for bacteria reduction, but outflow bacteria concentrations peaked during the second watering after long dry periods. Submerged zones significantly reduced bacteria outflow concentrations. However, sudden temperature increases caused bioretention cells with a submerged zone to produce significantly higher bacteria outflow concentrations than before the temperature increase, which was not the case for standard cells. Bioretention cells with submerged zones may thus be poor choices for reducing bacterial concentrations in stormwater runoff in areas experiencing winter conditions. Finally, our results suggest that adsorption (e.g. further enhanced by biofilm formation) is the major mechanism governing bacteria reduction in bioretention systems.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Bacteria, Submerged zone, Stormwater, Bioretention, Winter performance, Wet and dry periods
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-73082 (URN)10.1016/j.hydroa.2019.100025 (DOI)
Available from: 2019-03-01 Created: 2019-03-01 Last updated: 2019-04-15Bibliographically approved
Panasiuk, O., Hedström, A., Ashley, R., Marsalek, J. & Viklander, M. (2019). The feasibility of using flap gates as constriction flow meters for estimating sanitary sewer overflows (SSO). Desalination and Water Treatment, 155, 113-119
Open this publication in new window or tab >>The feasibility of using flap gates as constriction flow meters for estimating sanitary sewer overflows (SSO)
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2019 (English)In: Desalination and Water Treatment, ISSN 1944-3994, E-ISSN 1944-3986, Vol. 155, p. 113-119Article in journal (Refereed) Published
Abstract [en]

Increased awareness of the negative effects of sanitary sewer overflow (SSO) events on human health and aquatic life led to the development of various control measures, of which implementation is impeded by the lack of information on SSO occurrences, flows and volumes. The collection of such information requires data acquisition systems, which can be costly and are fully utilized just during limited time periods of the year. In search for inexpensive approaches to SSO monitoring, the feasibility of using existing flap gate installations, serving for prevention of back-up flows into sewers, as constriction flow meters was investigated, with promising results. An experimental pilotscale setup was designed to allow steady water flow through a flap gate built into a partition wall between two chambers. The stabilized water heads in the chambers and the flow rate through the flap gate were measured, for both dry and submerged flap gate conditions, and five flap gate sizes (200, 300, 400, 500 and 600 mm), with relatively heavy covers (6–102 kg). The measured data were used to develop flow rating curves, by non-linear regression, in the form Q = f (ΔH), where Q is the discharge through the flap gate and ΔH is the pressure differential upstream and downstream of the gate. The regression curves fitted the experimental data with high precision (R2 >0.99). The use of flow rating curves for estimation of the SSO volume was discussed. This study demonstrated that the water head measurements upstream and downstream of the flap gate can provide a reliable, accurate and inexpensive method for quantification of the SSO discharges and volumes.

Place, publisher, year, edition, pages
Desalination Publications, 2019
Keywords
Flap gates, Sanitary sewer overflows (SSO), SSO volumes
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-74804 (URN)10.5004/dwt.2019.24011 (DOI)000470121900011 ()2-s2.0-85067931662 (Scopus ID)
Note

Validerad;2019;Nivå 2;2019-06-20 (johcin)

Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-08-19Bibliographically approved
Nyström, F., Nordqvist, K., Herrmann, I., Hedström, A. & Viklander, M. (2019). Treatment of road runoff by coagulation/flocculation and sedimentation. Water Science and Technology, 79(3), 518-525
Open this publication in new window or tab >>Treatment of road runoff by coagulation/flocculation and sedimentation
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2019 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 79, no 3, p. 518-525Article in journal (Refereed) Published
Abstract [en]

A laboratory investigation of the treatment potential of a coagulation process in the context of stormwater treatment was undertaken. The initial 25 L road runoff generated from four rain events was collected and subjected to a jar-testing regime with two commercial coagulants. The treatment effect was assessed by analysing the runoff before and after treatment for turbidity, suspended solids and metal content. The coagulation process resulted in particle and total metal reduction of more than 90% compared to 40% for only sedimentation. Up to 40% reduction of dissolved Cr, Cu and Pb was also observed compared to 0% for sedimentation. This study shows that coagulation may be a useful process for stormwater treatment systems when the treatment requirements are high.

Place, publisher, year, edition, pages
IWA Publishing, 2019
Keywords
advanced stormwater treatment, coagulation, metals, particles, road runoff, suspended solids
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-73090 (URN)10.2166/wst.2019.079 (DOI)30924806 (PubMedID)2-s2.0-85063686388 (Scopus ID)
Funder
Swedish Research Council Formas, 2016-20075Swedish Research Council Formas, 2016-01447
Note

Validerad;2019;Nivå 2;2019-04-08 (oliekm)

Available from: 2019-03-01 Created: 2019-03-01 Last updated: 2019-08-16Bibliographically approved
Garmabaki, A. S., Marklund, S., Thaduri, A., Hedström, A. & Kumar, U. (2019). Underground pipelines and railway infrastructure: failure consequences and restrictions. Structure and Infrastructure Engineering
Open this publication in new window or tab >>Underground pipelines and railway infrastructure: failure consequences and restrictions
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2019 (English)In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980Article in journal (Refereed) Epub ahead of print
Abstract [en]

Underground pipelines are an essential part of the transportation infrastructure. The structural deterioration of pipelines crossing railways and their subsequent failures can entail critical consequences for society and industry, resulting in direct and indirect costs for all the stakeholders involved. Therefore, continuous and accurate condition assessment is critical for the effective management and maintenance of pipeline networks within the transportation infrastructure. The aim of this study has been to identify failure modes and consequences related to pipelines crossing railway corridors. Expert opinions have been collected through interviews and two sets of questionnaires have been distributed to the 291 municipalities in Sweden, with 137 responses in total. The failure analysis has revealed that pipe deformation has the highest impact, followed by pipe rupture at locations where pipelines cross railway infrastructure. For underground pipelines under railway infrastructure, ageing and the external load were awarded a higher ranking than other potential causes of pipeline failure.

Place, publisher, year, edition, pages
Taylor & Francis, 2019
Keywords
Pipes, pipelines, renovation, maintenance, inspection, maintenance debt, life cycle costs, failure modes, axial loads, pipeline-railway crossings
National Category
Water Engineering Other Civil Engineering
Research subject
Operation and Maintenance; Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-76283 (URN)10.1080/15732479.2019.1666885 (DOI)000487636800001 ()
Available from: 2019-10-08 Created: 2019-10-08 Last updated: 2019-10-10
Garmabaki, A. S., Marklund, S., Thaduri, A., Hedström, A. & Kumar, U. (2019). Underground pipelines and railway infrastructure: failure consequences and restrictions. Structure and Infrastructure Engineering
Open this publication in new window or tab >>Underground pipelines and railway infrastructure: failure consequences and restrictions
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2019 (English)In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980Article in journal (Refereed) Epub ahead of print
Abstract [en]

Underground pipelines are an essential part of the transportation infrastructure. The structural deterioration of pipelines crossing railways and their subsequent failures can entail critical consequences for society and industry, resulting in direct and indirect costs for all the stakeholders involved. Therefore, continuous and accurate condition assessment is critical for the effective management and maintenance of pipeline networks within the transportation infrastructure. The aim of this study has been to identify failure modes and consequences related to pipelines crossing railway corridors. Expert opinions have been collected through interviews and two sets of questionnaires have been distributed to the 291 municipalities in Sweden, with 137 responses in total. The failure analysis has revealed that pipe deformation has the highest impact, followed by pipe rupture at locations where pipelines cross railway infrastructure. For underground pipelines under railway infrastructure, ageing and the external load were awarded a higher ranking than other potential causes of pipeline failure.

Authors gratefully acknowledge the funding provided by Sweden’sinnovation agency, Vinnova, through the strategic innovation programmeInfraSweden2030. The funding was granted in a competitiveapplication process that assessed replies to an open call for proposalsconcerning “Condition Assessment and Maintenance of TransportInfrastructure (Grant No. 2016-033113)”.

Authors gratefully acknowledge the technical support and collaboration(In-kind support) of Arrsleff R€orteknik at Sweden, Luleå RailwayResearch Center (JVTC), Stormwater&Sewers and the SwedishTransport Administration (Trafikverket). In addition, the authors arethankful to the anonymous referees for their constructive commentsand Dr Matthias Asplund and Dr Masoud Naseri for their support andsuggestions.

Place, publisher, year, edition, pages
Taylor & Francis, 2019
Keywords
Pipes, pipelines, renovation, maintenance, inspection, maintenance debt, life cycle costs, failure modes, axial loads, pipeline-railway crossings
National Category
Reliability and Maintenance Water Engineering Other Civil Engineering
Research subject
Operation and Maintenance; Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-76470 (URN)10.1080/15732479.2019.1666885 (DOI)
Projects
PipeXrail
Funder
Vinnova, 2016-033113
Available from: 2019-10-22 Created: 2019-10-22 Last updated: 2019-10-28
Panasiuk, O., Hedström, A., Langeveld, J., de Haan, C., Liefting, E., Schilperoort, R. & Viklander, M. (2019). Using Distributed Temperature Sensing (DTS) for Locating and Characterising Infiltration and Inflow into Foul Sewers before, during and after Snowmelt Period. Water, 11(8), Article ID 1529.
Open this publication in new window or tab >>Using Distributed Temperature Sensing (DTS) for Locating and Characterising Infiltration and Inflow into Foul Sewers before, during and after Snowmelt Period
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2019 (English)In: Water, ISSN 2073-4441, E-ISSN 2073-4441, Vol. 11, no 8, article id 1529Article in journal (Refereed) Published
Abstract [en]

Infiltration and inflow (I/I) into sewers cause negative effects on the sewer system,wastewater treatment plant and environment. Identifying the causes and locating the inflows isnecessary in order to address the I/I problem. This paper focuses on using distributed temperaturesensing (DTS) for identifying, locating and characterising I/I into a sewer system during the endof winter–beginning of summer transition period under dry and wet weather conditions. Duringsnowmelt, several locations with I/I were identified, while these locations did not show I/I duringstorm events after the snowmelt. In addition, during a very heavy storm after the snowmelt period,I/I was found at other locations. Therefore, DTS was demonstrated to be effective in identifying thetype of I/I and in locating I/I. Finally, I/I monitoring campaigns in cold climates should take intoaccount the variety of pathways of I/I during snowmelt and during rainfall.

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
distributed temperature sensing, infiltration and inflow, snowmelt, foul sewers
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-75547 (URN)10.3390/w11081529 (DOI)000484561500004 ()2-s2.0-85070252913 (Scopus ID)
Funder
Swedish Research Council Formas, 2012-618Vinnova, 2011-03232
Note

Validerad;2019;Nivå 2;2019-08-19 (marisr)

Available from: 2019-08-15 Created: 2019-08-15 Last updated: 2019-10-08Bibliographically approved
Pericault, Y., Kärrman, E., Viklander, M. & Hedström, A. (2018). Data supporting the life cycle impact assessment and cost evaluation of technical alternatives for providing water and heating services to a suburban development in Gällivare Sweden. Data in Brief, 21, 1204-1208
Open this publication in new window or tab >>Data supporting the life cycle impact assessment and cost evaluation of technical alternatives for providing water and heating services to a suburban development in Gällivare Sweden
2018 (English)In: Data in Brief, E-ISSN 2352-3409, Vol. 21, p. 1204-1208Article in journal (Refereed) Published
Abstract [en]

The article presents input data that were used in Pericault et al. (2018) for life cycle impact assessment and total cost assessment of five technical alternatives for heat and water services provision in a suburban development in Sweden. The data consists of a list of environmental impacts (cumulative exergy demand of energy carriers – CExDe, global warming potential – GWP, abiotic depletion potential of elements – ADPE), costs, amortisation periods, lifetimes and output flows of the system processes composing the alternatives. The data was derived from values collected in lifecycle databases, environmental product declarations, scientific publications and personal communications with companies.

Place, publisher, year, edition, pages
Elsevier, 2018
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-71489 (URN)10.1016/j.dib.2018.10.058 (DOI)000457925900164 ()
Available from: 2018-11-07 Created: 2018-11-07 Last updated: 2019-03-08Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-9541-3542

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