pipe system Articles

  • A fuzzy approach for considering uncertainty in transient analysis of pipe networks

    Uncertain parameters in the transient analysis of pipe networks lead to uncertain responses. Typical uncertainties are nodal demand, pipe friction coefficient and wave speed, which not only are imprecise in nature but also change significantly over time. Exploiting the fuzzy set theory and a simple scheme of the simulated annealing method, a conceptual model is developed. It can take into ...


    By IWA Publishing

  • Anomaly pre-localization in distribution–transmission mains by pump trip: preliminary field tests in the Milan pipe system

    In this paper, the reliability of transients due to pump trip as a powerful tool for the pre-localization of anomalies in real pipe systems is tested. The examined pipe system is part of the one supplying the city of Milan, Italy and is managed by Metropolitana Milanese SpA (MM). The characteristics of such a system can be considered as intermediate between those of classical transmission mains ...


    By IWA Publishing

  • Asahi/America Application Story – Chemical Processing

    A large manufacturer of printing ink needed a high purity piping system to produce a new prototype of ink. The DI Water System called for a continuous loop system and required strict adherence to a low TOC. Asahi's Purad PVDF Piping System was chosen due to its low leachout ratings and the ability of the zero deadleg valves to reduce the possibility of bacteria build-up within the loop. ...


    By Asahi/America, Inc.

  • Asahi/America Application Story – Railroad

    CSX's underground air brake system was corroding. They had thousands of feet of pipe in the ground that was beginning to fail.  The system was failing as a result of their current system's inability to withstand their application's physical demands. They had to find a piping system that was rugged, durable, resistant to corrosion and cost effective. Asahi/America had what they ...


    By Asahi/America, Inc.

  • Response of piping system with semi–active variable friction dampers under tri–directional seismic excitation

    Seismic loads on piping system due to earthquakes can cause excessive vibrations, which can lead to serious instability resulting in damage or complete failure. In this paper, semi–active variable friction dampers (SAVFDs) have been studied to mitigate seismic response and vibration control of piping system used in the process industries, fossil and fissile fuel power plant. A study is also ...


    By Inderscience Publishers

  • Diagnosis of pipe systems by the SLE: first results

    In this study, an algorithm is presented for pipe system diagnosis. The algorithm is the Successive Linear Estimator (SLE) previously used in groundwater hydrology to estimate the hydraulic proprieties of soils. The SLE is an iterative cokriging-like technique which provides statistically the best unbiased estimates and quantifies the associated uncertainty. In this paper the algorithm has been ...


    By IWA Publishing

  • Acoustically induced vibration: A review of industry best practice

    WKC Partner and Noise and Vibration practice leader, Richard Palmer, has recently had an article published in the Institute of Acoustics (IOA) Journal titled ‘Acoustically Induced Vibration: A Review of Industry Best Practice’. This technical paper, which provides the reader with a better understanding of the AIV phenomenon, was published in the IOA Journal in September 2015.  ...


    By WKC Group

  • IPEX Piping Systems - Sugar Land, TX Case Study

    Founded as a sugar plantation in the mid 1800s, Sugar Land is one of the most affluent and fastest-growing cities in Texas, having grown more than 158% in population over the last decade. With such development, it’s no wonder that the City of Sugar Land needed a better way to provide potable water to support ...


    By IPEX, Inc.

  • Heap leach drainage design

    Heap leach operations have gained popularity in the past around the world as a reasonable method for extracting metals such as gold, copper, and nickel from earth material. In such heap operations, however, the success of the leaching operation depends on the flow regime established by the sprinklers at the top of each lift and the drainage system at the bottom.Each lift represents a unique ...


    By SoilVision Systems Ltd.

  • Hydraulic simulation of perforated pipe systems feeding vertical flow constructed wetlands

    For successfully operating a vertical flow constructed wetland, the uniform distribution of wastewater on the surface of the soil filter is essential. In research, however, this aspect is often overlooked. This study presents a methodology for assessing discharge uniformity from perforated pipe systems via hydraulic modeling. First, the requirements and conditions for the simulation of ...


    By IWA Publishing

  • 3Helium and Duratec Airline System: The Only Way Is Up Case Study

    Party City® is an international party supply retailer and one of the largest users of helium in the United States. As a result of helium’s small molecular structure, it is often difficult to efficiently convey and contain as it can diffuse through various piping and fitting ...


    By IPEX, Inc.

  • Tighter Sewer Joints - The Responsible Choice Case Study

    Municipal engineers can ensure sewer piping systems remain leak-free throughout their operating life by specifying solutions that offer tighter sewer joints. Leaking joints in a sewer piping system result in the loss of soil fines in the bedding around the pipe. As water percolates out of a leaky joint, it mechanically erodes the bedding ...


    By IPEX, Inc.

  • Transient tests for locating and sizing illegal branches in pipe systems

    In pipe systems illegal branches can take away remarkable water resources with negative effects from both the economic and technical points of view. Difficulties in pointing out illegal branches by means of steady-state pressure and discharge measurements are mainly due to the fact that, of course, such systems are not active according to a regular time schedule. In this paper the possibility of ...


    By IWA Publishing

  • Common Mistakes When Installing a Sanitary System

      Even the most experienced pump installer can make mistakes when installing a sanitary pump system. To overcome this, we will discuss here important techniques that, if performed during the installation of a ...


    By Adamant Valves

  • Large contract manufacturer in northern California

    "We decided to buy a wastewater treatment system from the cleaner manufacturer because it was convenient." discussion: The cleaner manufacturer bought the wastewater treatment equipment from another company. This company was actually reselling the equipment that was made by another company. Therefore, there were two companies between the end user and the actual manufacturer of the ...

  • Case study - Knowledge sharing

    WKC deliver a workshop on assessment methods for the evaluation of Acoustically & Flow Induced Vibration; As a leading provider of Acoustically Induced Vibration (AIV) and Flow Induced Vibration (FIV) assessments for the oil & gas and  petrochemical sectors, WKC was invited to provide training for PETRONAS in Kuala Lumpur, Malaysia. Led ...


    By WKC Group

  • Mosaic Stadium, Regina: Home to the Roughriders and IPEX Case Study

    From the beginning the owner was interested in the use of thermoplastic piping systems for drain, waste, and ventilation (DWV), potable water and chilled water lines, but research needed to be done. After looking at price and installation-time comparisons with copper and steel pipe, the most cost-effective choice with the quickest install time was thermoplastic ...


    By IPEX, Inc.

  • Fabrication of 4500 cu.m/day MSF plant equipment

    The 4500 M³/day Multistage Flash (MSF) plant fabrication is nearing completion in Kalpakkam, India. This includes in total the fabrication of brine heater, deaerator, vacuum system consisting of steam jet ejector and condensers, process tanks, pumps, piping system and ten rectangular vessels meant for heat recovery and heat rejection in the MSF desalination process. This paper describes the ...


    By Inderscience Publishers

  • Comparison of viscoelastic models with a different number of parameters for transient simulations

    The numerical and analytical models used for transient simulations, and hence for the pressurized pipe system diagnosis, require the definition of a rheological component related to the pipe material. The introduction and the following widespread use of polymeric material pipes, characterized by a viscoelastic behavior, increased the complexity and the number of parameters involved in this ...


    By IWA Publishing

  • Setting up a Compressed Air Leak Program for Phelps Dodge - Case Study

    Challenge: With facilities in North America, South America and Europe, the need to reduce the impact of rising energy costs, key personnel participated in US Department of Energy sponsored seminars for the Compressed Air Challenge. The US Department of Energy has estimated that thirty percent of all compressed air produced in the USA is lost to leaks. With large facilities ...


    By UE Systems Inc

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