Download or read book M77 Condition Assessment of Water Mains written by and published by . This book was released on 2019 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condition Assessment of Water Mains written by Awwa and published by . This book was released on 2019 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual provides technical information to aid utility managers and engineers in making informed decisions, along with practical information about how methods can be deployed.
Download or read book Workshop on Condition Assessment Inspection Devices for Water Transmission Mains written by K. Lillie and published by American Water Works Association. This book was released on 2005-05-31 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many water utilities have only a limited knowledge of the structural condition of their underground assests. In order to maintain optimum serviceability, it is increasingly important that utilities gain a better understanding of the current condition and performance of these buried assets. Regular inspection and condition assessment of pipelines can greatly assist utilities with developing robust and cost-effective operational maintenance programs, which will optimize capital expenditure whilst minimizing risk. The aim of the project was to conduct a state-of-the-art literature review of non-interruptive condition assessment inspection devices for large diameter transmission mains (greater than 12 inches). In addition, an expert panel workshop was to be held to review business needs and drivers, the performance of existing technologies, and future underground asset condition assessment research needs. Originally published by AwwaRF for its subscribers in 2004.
Download or read book Selecting Cost effective Condition Assessment Technologies for High consequence Water Mains written by Balvant Rajani and published by . This book was released on 2017 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Workshop on Condition Assessment Inspection Devices for Water Transmission Mains written by Kevin Lillie and published by . This book was released on 2004 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interruption of water supply service during inspection of large-diameter transmission mains can have undesirable impacts on drinking water utilities and their customers. Likewise, the failure of a large transmission main can disrupt the supply of water to a large portion of a community, causing significant inconvenience and damage. Therefore, regular inspection of mains can assist utilities with preventative maintenance and minimize risks. Typically, utilities conduct condition assessment of buried pipes to determine a pipeline & rsquo;s serviceability and to consider if a new main or rehabilitation are needed. In the past, many condition-assessment methods involved the excavation and removal of pipe sections. Nondestructive evaluation techniques were rarely used or thought of as viable options. In addition, utilities were unable to use existing condition-assessment technologies for lines in service due to constraints and limitations, such as water levels in the mains. New technologies appear to offer some hope for an effective and affordable solution; however, details of these technologies may not be widely known. Consequently, the industry needs further evaluation of condition-assessment technologies that are capable of being used while maintaining service to the main.
Download or read book Integrated Multiple sensor Methodology for Condition Assessment of Water Mains written by Mohamed Fahmy and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considerable capital investment has been made in civil infrastructure systems across the globe including water mains. Currently, existing failure detection and location methods do not allow for quick reaction to failures. In addition, no unified standards are followed in condition assessment of water mains. Moreover, the decision by which water mains are inspected is currently carried out based on approximation and experience of decision-makers, which might be limited and may lead to overlooking suitable evaluation methods that might save time, effort and cost. This research presents a methodology that contributes to different phases in the asset management of water mains. It enhances current practice in condition assessment of water mains and assists in setting up rehabilitation priorities. The methodology implemented is based on intensive literature review, evaluation of current methods, field investigation and experiments, and interviews with experts. The methodology considered augments two approaches currently used in condition assessment of water mains, which are proactive and reactive methods. The developed methodology calls for designing a new decision support system (DSS) for selection of most suitable non-destructive evaluation (NDE) method(s). It consists of two components: 1) A Database management system (DBMS), and 2) an evaluation and ranking module (ERM). These NDE methods are used for either detecting suspected leaks or measuring pipe wall thickness, the latter is employed to predict remaining service life of pipe being considered. In case of suspected leaks, this study presents a newly designed automated system for detection of water leaks in underground pipelines and identifying their respective locations. The development of this system is based on using Thermography infrared (IR) camera in order to detect thermal contrast at the pavement surface due to water leaks at the most suitable time. The data obtained is analyzed in order to establish the relationship between the detected leakage area and the approximate location of leak. Prototype software developed in Visual C# environment is implemented in order to determine the location of leaks automatically. Two deterioration models were designed and developed for estimating remaining useful life of water mains, and predicting annual breakage rate of water mains. The development of the two models is based on the analysis of real data collected from 16 municipalities in Canada and the US. The two models were developed considering two approaches, multiple regression analysis and Artificial Neural Networks (ANNs) based on the most suitable subsets of selected factors. The final model was selected due to its reliability and better performance in comparison to other models. The outputs of the deterioration models developed in this research were used, in addition to other deterioration factors that were not considered in existing models in order to develop a Decision Support System (DSS) for generating condition rating scale of water main being considered, and for prioritizing rehabilitation/ maintenance actions. The system is hierarchal in structure, and the condition-rating index is generated using Multi Attributes Utility Theory (MAUT). System validation was carried out by comparing its outcome with real case studies. A prototype software application of the model presented in this research is implemented as a proof of concept to demonstrate the capabilities and essential features of the developed models.
Download or read book Primer on Condition Curves for Water Mains written by U S Environmental Protection Agency and published by CreateSpace. This book was released on 2014-08-01 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of economical tools to prioritize pipe renewal based upon structural condition and remaining asset life is essential to effectively manage water infrastructure assets for both large and small diameter pipes. One tool that may facilitate asset management is a condition curve. A condition curve is a graphical representation of the condition of a pipeline versus time. This report provides a review of the state-of-the-technology for structural/physical condition curves for water mains. Various models are summarized such as break frequency curves, deterioration/decay/survival curves, condition rating curves and condition rating indices, and serviceability/performance curves. This report also provides new case study information on how condition curves are used by utilities for managing their water infrastructure based upon a survey of nine utilities. The utilities that were surveyed for these case studies used methods that ranged from very detailed asset management programs that combine inspection, monitoring, and test data with their pipeline condition assessment program to simple analyses of pipe break history to prioritize pipeline renewal activities. The review also discusses short-term and long-term research needs for further development of a performance-based buried infrastructure asset management approach to improve the quality and quantity of data used by all utilities.
Download or read book Condition Assessment of Water Main Appurtenances written by David Marlow and published by American Water Works Association. This book was released on 2012-01-01 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drinking Water Distribution Systems written by National Research Council and published by National Academies Press. This book was released on 2007-01-22 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamination that has yet to be fully addressed. This report evaluates approaches for risk characterization and recent data, and it identifies a variety of strategies that could be considered to reduce the risks posed by water-quality deteriorating events in distribution systems. Particular attention is given to backflow events via cross connections, the potential for contamination of the distribution system during construction and repair activities, maintenance of storage facilities, and the role of premise plumbing in public health risk. The report also identifies advances in detection, monitoring and modeling, analytical methods, and research and development opportunities that will enable the water supply industry to further reduce risks associated with drinking water distribution systems.
Download or read book Concrete Pressure Pipe 3rd Ed written by American Water Works Association and published by American Water Works Association. This book was released on 2008 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive manual of water supply practices explains the design, selection, specification, installation, transportation, and pressure testing of concrete pressure pipes in potable water service.
Download or read book Pipelines 2011 written by American Society of Civil Engineers and published by Amer Society of Civil Engineers. This book was released on 2011-07-22 with total page 1500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Pipelines 2011 Conference, held in Seattle, Washington, July 23-27, 2011. Sponsored by the Pipeline Division of ASCE. This collection contains 135 peer-reviewed technical papers that discuss new solutions to some of the most critical infrastructure issues involving pipelines. The U.S. water and wastewater infrastructure systems are continuing to deteriorate. The recent economic downturn has increased the gap between current and required levels of funding. These serious financial constraints highlight the urgent need for creative and innovative solutions to improve our water and wastewater infrastructure systems. From the technical perspective, cost effective materials, proper planning, new design methods, innovative construction technologies, and advanced condition assessment technologies must be more aggressively developed, tested, and introduced to the industry. From the management perspective, optimal use of financial resources, smart and carefully crafted decision making processes on maintenance, rehabilitation and replacement activities must be made available, applied by and used by water and wastewater infrastructure agencies.
Download or read book Risk Management of Large diameter Water Transmission Mains written by Yehuda Kleiner and published by Amer Water Works Assn. This book was released on 2005 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the approach developed to combine scarce available data with engineering judgment to manage failure risk of large-diameter water transmission mains and make informed decisions in a formal, consistent and tractable manner. Thus a deteriorization model was developed using fuzzy-based mathematical techniques The proof of concept computer prototype is included on the included CD. 4-color pages
Download or read book Assessment and Renewal of Water Distribution Systems written by Neil S. Grigg and published by International Water Assn. This book was released on 2005 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a synthesis of knowledge and includ
Download or read book The Properties of Cast Iron and Their Relevance to the Condition Assessment of Water Mains written by Hamed Mohebbi and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Infrastructure Management Manual written by and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manual provides guidelines for best management practices for all infrastructure assets in the public and private sectors at the lowest life cycle cost.
Download or read book Leak Detection written by Stuart Hamilton and published by IWA Publishing. This book was released on 2013-06-30 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ageing infrastructure and declining water resources are major concerns with a growing global population. Controlling water loss has therefore become a priority for water utilities around the world. In order to improve efficiencies, water utilities need to apply good practices in leak detection. Leak Detection: Technology and Implementation assists water utilities with the development and implementation of leak detection programs. Leak detection and repair is one of the components of controlling water loss. In addition, techniques are discussed within this book and relevant case studies are presented. This book provides useful and practical information on leakage issues.
Download or read book Performance Indicators for Water Supply Services written by Helena Alegre and published by IWA Publishing. This book was released on 2016-09-15 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a large number of projects both for internal performance assessment and metric benchmarking. Water professionals have benefited from a coherent and flexible system, with precise and detailed definitions that in many cases have become a standard. The system has proven to be adaptable and it has been used in very different contexts for diverse purposes. The Performance Indicators System can be used in any organization regardless of its size, nature (public, private, etc.) or degree of complexity and development. The third edition of Performance Indicators for Water Supply Services represents a further improvement of the original manual. It contains a reviewed and consolidated version of the indicators, resulting from the real needs of water companies worldwide that were expressed during the extensive field testing of the original system. The indicators now properly cover bulk distribution and the needs of developing countries, and all definitions have been thoroughly revised. The confidence grading scheme has been simplified and the procedure to assess the results- uncertainty has been significantly enhanced. In addition to the updated contents of the original edition, a large part of the manual is now devoted to the practical application of the system. Complete with simplified step-by-step implementation procedures and case studies, the manual provides guidelines on how to adapt the IWA concepts and indicators to specific contexts and objectives. This new edition of Performance Indicators for Water Supply Services is an invaluable reference source for all those concerned with managing the performance of the water supply industry, including those in the water utilities as well as regulators, policy-makers and financial agencies.
