scholarly journals Failure Analysis of a Water Supply Pumping Pipeline System

Water ◽  
2016 ◽  
Vol 8 (9) ◽  
pp. 395 ◽  
Author(s):  
Oscar Pozos-Estrada ◽  
Alejandro Sánchez-Huerta ◽  
José Breña-Naranjo ◽  
Adrián Pedrozo-Acuña
Keyword(s):  
Water Supply ◽  
Failure Analysis ◽  
Pipeline System

Seismic Damage Assessment of Urban Water Supply Pipeline

2013 ◽  
Vol 316-317 ◽  
pp. 723-726
Author(s):  
Jian Qun Jiang ◽  
Xiao Wen Yao ◽  
Yi Ting Lu
Keyword(s):  
Water Supply ◽  
Damage Assessment ◽  
Longitudinal Direction ◽  
Underground Water ◽  
Seismic Damage ◽  
Pipeline System ◽  
Seismic Damage Assessment ◽  
Water Pipeline ◽  
Ground Condition ◽  
Water Supply Pipeline

Water supply pipeline system is a key issue in urban lifeline engineering, and the seismic assessment for the system damage is of significant importance. In this study, method of seismic damage assessment on underground water supply pipeline is introduced. With emphasis on the uncertainties of earthquake level, ground condition, soil-pipe interaction and capacity to resist pipe deformation in longitudinal direction, the check point method is applied to the reliability study of water pipeline, and a case study is presented to show the implementation of the proposed model.

Research on Life Cycle Assessment of Plastic Pipeline System

2016 ◽  
Vol 847 ◽  
pp. 366-373
Author(s):  
Chun Zhi Zhao ◽  
Meng Chi Huang ◽  
Yi Liu ◽  
Li Ping Ma
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Water Supply ◽  
Greenhouse Effect ◽  
Environmental Influence ◽  
Green Building ◽  
Renewable Resource ◽  
Resource Consumption ◽  
Raw Material ◽  
Pipeline System

Plastic pipe is a kind of new pipeline material and its output has been increasing in recent years. It is still mainly used for water supply and drainage of buildings and municipal utility industry as well as for safe drinking in rural areas, about half of all plastic pipelines are used for buildings, and the proportion of these pipelines used in other fields is also increasing. Plastic pipeline system's influence on the environment within its life cycle is the focus of researches in recent years. Based on life cycle assessment (LCA), this paper assesses the common water supply and drainage pipelines (PPR, PE and PVC-U) for buildings for resource and energy consumption, non-renewable resource consumption (ADP) of pollution gas emission, greenhouse effect (GWP), acidification effect (AP) and eutrophication (EP) and inhalable inorganics (RI) generated in the process of life cycle from raw material exploitation to produce production and other environmental influence closely related to the national energy conservation and emission reduction policy. The result shows that the influence indexes of non-renewable resource consumption for functional unit of PPR pipe, PE pipe and PVC-U pipe are 2.22×10-5 Kg antimony eq./ kg, 1.51×10-5 Kg antimony eq./ kg, 6.82×10-6 Kg antimony eq./ kg; those of acidification effect are 1.92×10-2kg SO2 eq./ kg, 1.96×10-2g SO2 eq./ kg, 3.90×10-2kg SO2 eq./ kg; those of eutrophication are 2.39×10-3kg PO43-eq./ kg, 2.36×10-3kg PO43-eq./ kg, 3.40×10-3kg PO43-eq./ kg; those of inhalable inorganics are 6.46×10-3 kg PM2.5 eq./ kg, 6.30×10-3 kg PM2.5 eq./ kg, 1.91×10-2 kg PM2.5 eq./ kg; those of greenhouse effect are 3.72kg CO2 eq./ kg, 3.60kg CO2 eq./ kg, 7.93kg CO2 eq./ kg. This result shows that the environmental influence of PPR, PE and PVC-U pipes mainly depends on the raw materials required for producing pipes, so the key of plastic pipeline greening is to reduce the consumption of virgin resin. This investigation creates a database about plastic pipeline's influence on environment within its full life cycle for the purpose of laying a foundation for calculating intrinsic energy in a building, promoting selection of green building material, facilitating the realization of green building objective, and improving the knowledge of developer, constructor and user to potential influence of the pipeline system within its life cycle.

scholarly journals Hydraulic Engineering at 100 BC-AD 300 Nabataean Petra (Jordan)

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3498
Author(s):  
Charles R. Ortloff
Keyword(s):  
Water Supply ◽  
Flow Rate ◽  
Distribution Systems ◽  
Maximum Flow ◽  
Hydraulic Engineering ◽  
World Heritage Site ◽  
Maximum Flow Rate ◽  
Pipeline System ◽  
Supply And Distribution ◽  
Pipeline Systems

The principal water supply and distribution systems of the World Heritage site of Petra in Jordan were analyzed to bring forward water engineering details not previously known in the archaeological literature. The three main water supply pipeline systems sourced by springs and reservoirs (the Siq, Ain Braq, and Wadi Mataha pipeline systems) were analyzed for their different pipeline design philosophies that reflect different geophysical landscape challenges to provide water supplies to different parts of urban Petra. The Siq pipeline system’s unique technical design reflects use of partial flow in consecutives sections of the main pipeline to support partial critical flow in each section that reduce pipeline leakage and produce the maximum flow rate the Siq pipeline can transport. An Ain Braq pipeline branch demonstrated a new hydraulic engineering discovery not previously reported in the literature in the form of an offshoot pipeline segment leading to a water collection basin adjacent to and connected to the main water supply line. This design eliminates upstream water surges arising from downstream flow instabilities in the two steep pipelines leading to a residential sector of Petra. The Wadi Mataha pipeline system is constructed at the critical angle to support the maximum flow rate from a reservoir. The analyses presented for these water supply and distribution systems brought forward aspects of the Petra urban water supply system not previously known, revising our understanding of Nabataean water engineers’ engineering knowledge.

scholarly journals Elevation Effect in Urban Water Distribution Model

2018 ◽  
Vol 153 ◽  
pp. 09001
Author(s):  
Rangsan Wannapop ◽  
Thira Jearsiripongkul ◽  
Krit Jiamjiroch
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Supply System ◽  
Distribution Model ◽  
Pipeline System ◽  
Urban Water ◽  
Main Pipeline ◽  
Pipe Network ◽  
Pipeline Network ◽  
Water Distribution Model

Metropolitan Waterworks Authority (MWA) is Thailand's national government agency responsible for the supply of water to 3 provinces Bangkok, Nonthaburi and Samut Prakan with more than 2,384.9 km2 of service area and 2,281,058 consumers in the year 2016. Bangkok, which is both the capital and the economic center of the country, is densely populated. Consequently, there is a huge demand for water; MWA has to supply 5.914 million cubic meters of water per day. Because the metropolitan water supply area is a densely populated city, the water supply system is very complex like a spider’s web. For this reason, MWA has adopted EPANET software for its water supply managing tool in the main pipeline system. There are some mistakes in the main pipe network; the elevations of the nodes are not assigned, so there are some errors. In this study, we have assigned elevations for all nodes on the pipeline network based on mean sea level (MSL). After adjusting the elevation of each node, it was found that the new pipeline network has increased the correlation between means to 0.893 from the existing model mean of that is 0.803 of accuracy up 0.09 (11.2%).

A Comprehensive Review on Failure Analysis of Electrofusion Joint For Plastic Pipes

2021 ◽  
Author(s):  
Zhoutian Ge ◽  
Riwu Yao ◽  
Jianfeng Shi ◽  
Jinyang Zheng
Keyword(s):  
Failure Analysis ◽  
Failure Modes ◽  
External Factors ◽  
Pipeline System ◽  
Premature Failure ◽  
Comprehensive Review ◽  
Factors Affecting ◽  
Intrinsic Factors ◽  
Plastic Pipes ◽  
Load Conditions

Abstract Electrofusion joint plays an important role in connecting plastic pipes and composite pipes. The safety of electrofusion joint has been of major concern affecting the pipeline system. Existing researches reveal that the failure of electrofusion joints is influenced by intrinsic factors such as welding and installation qualities, and external factors such as various load conditions. The combination of these factors would result in different failure modes of electrofusion joints. This paper provided a comprehensive review of current publications on failure analysis of electrofusion joints focusing on both the intrinsic and external factors. The former summarized premature failure of joints caused by incorrect production procedure before service, while the latter addressed the relation between failure modes and load conditions. Key factors affecting the failure modes were subsequently listed. Ultimately, based on current researches and industry hotspots, prospects on the development of electrofusion joint were discussed.

scholarly journals Forecasting Water Loss Due To Pipeline Leakage By Using ANFIS And BACKPROPAGATION Approach (Study Case At PDAM Tirta Kahuripan On District of Bogor)

2018 ◽  
Author(s):  
Harry Dhika ◽  
A. Daengs GS ◽  
Erlin Windia Ambarsari
Keyword(s):  
Water Supply ◽  
Error Rate ◽  
Water Loss ◽  
Urban Areas ◽  
Volcanic Rocks ◽  
High Rate ◽  
Pipeline System ◽  
The Public ◽  
Anfis Method ◽  
The One

In urban areas, water supply using pipeline system from the company of water supply; the name is PDAM (Perusahaan Daerah Air Minum) which provides services to the public to ensure clean water quality as health requirements. The one of a problem in PDAM is the high rate of water loss caused by pipeline leakage. Pipeline leakage is an important issue as resulting in financial losses, for both PDAM (water provider) and customers. Based on a previous study of, the area that allows the greatest pipe leakage such as Geledug-Leuwiliang and Cibungbulang-Ciampea, the reason is a complex volcanic rocks formation. Then this study has to continue by forecasting water loss per month up to 2017 to look at the frequency of water loss for immediate repair in handling pipeline leakage. Predicting to be done using ANFIS method and then it will test again with Backpropagation to check the error rate so that the data will be more accurate; where is the area in this study is Geledug-Leuwiliang (greatest pipeline leakage). The result is most likely due to visible leaks such as crack pipe caused by complex volcanic rocks formation (31.8% with error rate 1%). Therefore the effort made is to replace the leaky pipes which then do further study on the material used by the tube that is following the pipe area that planted.

scholarly journals Risk assessment and management in domestic water supply system in Pleiku city – Gia Lai province

2019 ◽  
Vol 17 (6) ◽  
pp. 50
Author(s):  
Anh Nguyễn Tuấn ◽  
Kỳ Nguyễn Minh ◽  
Hải Nguyễn Ninh
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Treatment Plant ◽  
Supply System ◽  
Water Supply System ◽  
Water Supply Systems ◽  
Pipeline System ◽  
Domestic Water ◽  
Supply Systems ◽  
Domestic Water Supply

Water is essential for maintaining life, ensuring a safe and continuous supply of water, therefore, it should be given the priority for concerns. Developing countries often face a number of problems with domestic water supply systems such as treatment plants with old technologies, degraded equipment leading to inefficient treatment, and a network of degraded piping, which could cause re-pollution of treated water during transport. Pleiku city, which is located in the Central Highlands of Vietnam, has built two treatment plants and a network of water supply pipelines in the core area. An analysis of the current state of the water supply system including water supply, treatment plant and pipeline system helps identify existing problems in the system. Through mixed methods, hazards or hazardous events are identified as a basis for risk assessment by using semi – quantitative method to assess raw risk and residual risk for each hazard. Priority risks are identified to focus on proposing the possible solutions that will improve the performance and management of domestic water supply systems.

scholarly journals Shock Wave Speed and Transient Response of PE Pipe with Steel-Mesh Reinforcement

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Wuyi Wan ◽  
Xinwei Mao
Keyword(s):  
Shock Wave ◽  
Water Supply ◽  
Transient Response ◽  
Wave Speed ◽  
Peak Pressure ◽  
Pipeline System ◽  
Transient Wave ◽  
Steel Mesh ◽  
Transient Wave Propagation ◽  
Water Supply Pipeline

A steel mesh can improve the tensile strength and stability of a polyethylene (PE) pipe in a water supply pipeline system. However, it can also cause more severe water hammer hazard due to increasing wave speed. In order to analyze the influence of the steel mesh on the shock wave speed and transient response processes, an improved wave speed formula is proposed by incorporating the equivalent elastic modulus. A field measurement validates the wave speed formula. Moreover, the transient wave propagation and extreme pressures are simulated and compared by the method of characteristics (MOC) for reinforced PE pipes with various steel-mesh densities. Results show that a steel mesh can significantly increase the shock wave speed in a PE pipe and thus can cause severe peak pressure and hydraulic surges in a water supply pipeline system. The proposed wave speed formula can more reasonably evaluate the wave speed and improve the transient simulation of steel-mesh-reinforced PE pipes.

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