Pipeline Inspection Articles

  • The P374 Intrinsically Safe Pipe Inspection System

    Are you looking for a Pipeline Inspection Camera? Suitable for a range of applications including sewer line and water pipe inspections, USA Borescopes can offer you a range of Pipeline Inspection Cameras for sale or on a rental basis.   Here is some information about the P374 Intrinsically Safe borescope by Pearpoint (Pearpoint P374). USA ...


    By USA Borescopes

  • Valuing information for sewer replacement decisions

    Decision-making for sewer asset management is partially based on intuition and often lacks explicit argumentation, hampering decision transparency and reproducibility. This is not to be preferred in light of public accountability and cost-effectiveness. It is unknown to what extent each decision criterion is appreciated by decision-makers. Further insight into this relative importance improves ...


    By IWA Publishing

  • Good Risk Prioritization Puts City Of Saskatoon On Top Of Its Game

    While pipeline management may seem unaffordable, understanding the condition and targeting repair provides an alternate approach to wholesale replacement and allows operators to accomplish the same de-risking effort with less money. The City of Saskatoon operates more than ...


    By Pure Technologies

  • Multivariate probability distribution for sewer system vulnerability assessment under data-limited conditions

    The lack of geometrical and hydraulic information about sewer networks often excludes the adoption of in-deep modeling tools to obtain prioritization strategies for funds management. The present paper describes a novel statistical procedure for defining the prioritization scheme for preventive maintenance strategies based on a small sample of failure data collected by the Sewer Office of the ...


    By IWA Publishing

  • Cause and effect oriented sewer degradation evaluation to support scheduled inspection planning

    Managing the subsurface urban infrastructure, while facing limited budgets, is one of the main challenges wastewater utilities currently face. In this context targeted planning of inspection and maintenance measures plays a crucial role. This paper introduces a cause and effect oriented sewer degradation evaluation approach to support decisions on inspection frequencies and priorities. ...


    By IWA Publishing

  • Cause and effect oriented sewer degradation evaluation to support scheduled inspection planning

    Managing the subsurface urban infrastructure, while facing limited budgets, is one of the main challenges wastewater utilities currently face. In this context targeted planning of inspection and maintenance measures plays a crucial role. This paper introduces a cause and effect oriented sewer degradation evaluation approach to support decisions on inspection frequencies and priorities. ...


    By IWA Publishing

  • What`s in the numbers? a review and analysis of more than 400 miles of force main inspection and condition assessment data

    Abstract Comprehensive condition assessment of wastewater force mains provides significant challenges to owners/operators of collection systems as the ability to shut down or expose the pipeline for a thorough inspection is often impractical due to operational and/or financial considerations. Traditional gravity sewer inspection techniques (i.e. visual-based technologies) do not always ...


    By Pure Technologies

  • Comparing the utility of decision trees and support vector machines when planning inspections of linear sewer infrastructure

    Closed-circuit television inspection technology is traditionally used to identify aging sewer pipes requiring rehabilitation. While these inspections provide essential information on the condition of pipes hidden from day-to-day view, they are expensive and often limited to small portions of an entire sewer system. Municipalities may benefit from utilizing predictive analytics to leverage ...


    By IWA Publishing

  • Comparison of the inspector and rating protocol uncertainty influence in the condition rating of sewers

    Wastewater drainage systems asset management decisions, in particular regarding rehabilitation interventions, are largely dependent on close-circuit television (CCTV) inspection results. However, the results of CCTV inspections are affected by several sources of uncertainty. Within the present communication, the inspector's uncertainty is quantified by comparing periodic inspection ...


    By IWA Publishing

  • Comparison of core sampling and visual inspection for assessment of concrete sewer pipe condition

    Sewer systems are costly to construct and even more costly to replace, requiring proper asset management. Sewer asset management relies to a large extent on available information. In sewer systems where pipe corrosion is the dominant failure mechanism, visual inspection by closed circuit television (CCTV) and core sampling are among the methods mostly applied to assess sewer pipe condition. This ...


    By IWA Publishing

  • Intelligent electric valve actuation on China’s West-East Pipeline - Case Study

    Overview The West-East Pipeline (WEPP) network is described as the largest and most significant gas industry project ever planned in China. Intended for the development of the western regions in China, the project involves construction of four gas pipelines connecting the eastern markets of China with the western resources. Thousands of kilometres of pipelines travel along varied terrains ...


    By Rotork

  • LIQT software tool

    GL Water offers distribution operators comprehensive software tools and consulting services to manage underground infrastructure assets. Through decades of experience in providing consulting services to water distribution utilities we are able to precisely model hydraulic transients. LIQT, industry recognised for accuracy and versatility, delivers a quick cost-effective solution to specific ...


  • I think I smell sewer gas – what should i do?

    The first thing is to make sure the smell is sewer gas—usually a rotten egg smell—and not a natural gas smell—usually smells like a skunk. If you think it’s the natural gas smell, call the natural gas company immediately and if it’s anything but a very faint small—evacuate your home, office, or whenever it is—and wait for the gas company to give you an ...


    By Atlantic Environmental, Inc.

  • City of Slidell’s drainage and sewer system recovery efforts following Hurricane Katrina

    Hurricane Katrina and its aftermath damaged the drainage and the sewerage collection system in the City of Slidell (City), creating health and safety issues for both the general public and emergency/recovery personnel working in the city. The efforts by the City in restoring these systems were critical to making the city safe and functional for the return of its citizens. This paper will try and ...

  • By when? a streamlined approach to prioritizing and stabilizing creek crossings

    ABSTRACT Colorado Springs Utilities (Springs Utilities) owns and operates over 1,500 miles of sanitary sewer pipelines throughout several watersheds in Colorado Springs, Colorado. Several of these pipeline segments cross or run parallel to major stream segments or minor drainage ways. In the summer of 2005, Springs Utilities embarked upon an aggressive program to identify pipeline segments ...

  • Los Angeles Collection System Agreement: a Win-Win Partnership & Success Story

    ABSTRACT During February 1998, the wettest February in Los Angeles’ history, sanitary sewer overflows (SSOs) occurred in a number of communities with the majority occurring in the Eagle Rock and South Los Angeles areas. In response to these SSOs, the Santa Monica Baykeeper (BayKeeper) filed a Federal lawsuit against the City asking for injunctive relief due to the SSOs. In January 2001, the ...

  • Rehabilitation of a Large Semi-Elliptical Sewer

    ABSTRACTThe Sanitation Districts of Los Angeles County (Districts) own, operate, and maintain a wastewater treatment and collection system that includes approximately 1300 miles of sanitary sewers ranging from 6 to 144 inches in diameter. A portion of the Districts’ Joint Outfall “A” Trunk Sewer was constructed of cast-in-place reinforced concrete having a semi-elliptical cross section and ...

  • City of Montebello Sewer Master Planning Utilizing Innovative GIS Solutions

    City of Montebello wanted to implement a comprehensive sewer master plan. At the same time they wanted to embark on implementing a GIS program. The solution was to combine the two and utilize the power and versatility of GIS as the core technology for performing the sewer master plan. In this paper we will show how the City accomplished its primary objectives which included: Modernizing its ...

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