Occurrence and risk assessment of pharmaceutically active compounds in water supply systems in Brazil

2020 ◽  
Vol 746 ◽  
pp. 141011 ◽  
Author(s):  
Amanda Vitória Santos ◽  
Carolina Fonseca Couto ◽  
Yuri Abner Rocha Lebron ◽  
Victor Rezende Moreira ◽  
Ana Flávia Souza Foureaux ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Water Supply Systems ◽  
Pharmaceutically Active Compounds ◽  
Active Compounds ◽  
Supply Systems

Source to Tap Risk Assessment for Intermittent Water Supply Systems in Arid Regions: An Integrated FTA—Fuzzy FMEA Methodology

2021 ◽  
Author(s):  
Husnain Haider ◽  
Mohammed Hammed Alkhowaiter ◽  
M. D. Shafiquzzaman ◽  
Mohammad Alresheedi ◽  
Saleem S. AlSaleem ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Arid Regions ◽  
Water Supply Systems ◽  
Intermittent Water Supply ◽  
Fuzzy Fmea ◽  
Supply Systems

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.

Research on the Risk Entropy Model of Water Supply Systems Based on Entropy Theory

2013 ◽  
Vol 726-731 ◽  
pp. 3089-3093
Author(s):  
Ren Qiang Lu
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Interaction Coefficient ◽  
Water Supply Systems ◽  
Entropy Theory ◽  
Entropy Model ◽  
Severity Factor ◽  
Supply Systems ◽  
Practical Feasibility ◽  
Risk Formula

According to the uncertainty characteristics of water supply systems when it suffered by the threats, the entropy function was introduced into water supply systems for the risk assessment studies, and the risk entropy model of water supply systems was proposed. Taking the earthquake disaster as an example, firstly, based on the risk assessment theory and information entropy theory, the severity factorEjof earthquakeXjwhich the water supply systems would be suffered was defined. Secondly, the product of severity factorEjand occurrence probabilityPjof earthquakeXjwas computed, and the normalized value of the product was defined as the interaction coefficientqjof earthquakeXj. Then, based on the theory basis above and risk formula, the risk entropy modelH(R)of water supply systems was established. Finally, a water supply systems of north china was taking as a case studies. Through application we found that the model was theoretical and practical feasibility, which can be used to solve the uncertainty problem of water supply systems.

scholarly journals Water Safety Plans: Risk assessment for consumers in Drinking Water Supply Systems

1969 ◽  
Vol 15 (2) ◽  
Author(s):  
Andrea Pérez-Vidal ◽  
Claudia Amézquita-Marroquín ◽  
Patricia Torres-Lozada
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Water Supply ◽  
Drinking Water Supply ◽  
Water Supply Systems ◽  
Water Safety ◽  
Water Safety Plans ◽  
Supply Systems

El usuario final es el último componente de los Sistemas de Abastecimiento de Agua Potable (SAAP) y se caracteriza porsu vulnerabilidad frente a los peligros debido a su cercanía al punto de consumo. En este estudio se realizó la evaluacióndel riesgo en el usuario final del SAAP de la ciudad de Cali abastecido por el río Cauca, enmarcado en la filosofía de losPlanes de Seguridad del Agua (PSA), usando herramientas como la matriz de peligros/eventos peligrosos, el monitoreo decalidad de agua, la aplicación de encuestas a los usuarios y la construcción de matrices semicuantitativas para estimaciónde riesgos. Los resultados evidenciaron poca percepción del riesgo y desconocimiento de la responsabilidad del usuariofinal en la protección de la calidad del agua, lo que puede generar conductas inadecuadas comprometiendo la integridaddel sistema interno de distribución. Aunque la mayoría de variables analizadas cumplieron la reglamentación nacional,algunos puntos registraron bajos valores de cloro residual y elevado recuento de bacterias heterotróficas, lo que sugierepotenciales riesgos por presencia de biopelícula. La participación y compromiso de todos los actores involucradosson estrategias fundamentales para evitar conductas inadecuadas y reducir riesgos, además del fomento de campañaseducativas como lo indica la reglamentación nacional.

Seismic Risk Assessment and Mitigation of Water Supply Systems

2010 ◽  
Vol 26 (1) ◽  
pp. 257-274 ◽  
Author(s):  
Yu Wang ◽  
Siu-Kui Au ◽  
Qiang Fu
Keyword(s):  
Risk Assessment ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Water Supply ◽  
Seismic Risk ◽  
Supply System ◽  
Direct Monte Carlo Simulation ◽  
Water Supply Systems ◽  
Critical Links ◽  
Supply Systems

This paper describes a process for seismic risk assessment and identification of critical links of water supply systems subjected to earthquakes. Probabilistic performance of water supply systems is reflected by the system serviceability index (SSI), damage consequence index (DCI), and upgrade benefit index (UBI). The process is illustrated using a hypothetical water supply system subjected to a seismic damage scenario, where direct Monte Carlo simulation is used for estimating the performance indices. It is shown that probabilistic characteristics of SSI can be attributed to system characteristics (e.g., demand distribution pattern) of the water supply system. UBI is shown to be the primary index in seismic mitigation, and critical links are pipes with relatively large UBI values. It is recognized that the values of UBI corresponding to different upgrade scenarios of pipes can be estimated using conditional samples from a single run of direct Monte Carlo simulation instead of repeated runs. The concept of efficient frontier is employed to identify the system critical links. It is found that, a group of links that have the largest UBI individually do not necessarily have the largest group UBI, nor are they necessarily the group of critical links.

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