Pipeline Rehabilitation with Polyolefin Pipe
This paper provides an introductory discussion on the rehabilitation of a deteriorated pipe structure by insertion renewal with continuous lengths of polyolefin pipe. This sliplining or...
Use of In-Place Lateral Reconstruction for Correction of Infiltration/Inflow
Extensive sewer collection system rehabilitation programs have done much and will continue to correct infiltration/inflow problems. However, re-evaluation of some of the earlier projects...
Getting to the Root of Sewer Problems
The ability to quantify and qualify work schedule in a clear, logical and precise manner can make the difference between an effective preventive maintenance program and one of 'trying'...
Internal Sealing of Large Diameter Pipelines
Underground piping has traditionally been repaired by making excavations at the joints and completing the repairs externally. However, with increasing labor costs, underground utility...
Water System Infrastructure Rehabilitation Needs in the State of New York
Water systems in many cities particularly in the Northeastern section of the United States are very old. With lack of proper and timely maintenance of the distribution network systems,...
Water Main Condition Monitoring A Case Study
Water main breaks, routine occurrences for water utilities, reflect the structural failure of the main. The trend in break patterns is increasing for many utilities in the U. S. Several...
Analysis of New York City's Water Main Replacement Policy
Water distribution main breakage is a perplexing problem for water utilities. To avoid excessive breakage, certain mains should be replaced. However, determining the appropriate mains...
Design of Ductile Iron Pipe Systems
To ensure a reliable, low maintenance infrastructure capable of withstanding the test of time, proper initial design is essential. The basis of the design standard for ductile iron pipe...
Pipe Geometry and Pipeline Bridge Wind Oscillation
Static and modal analyses of two pipeline suspension bridges owned by American Natural Resources - the Patterson Loop Aerial Crossing (PLAC) with a span of 850 feet (259 meters) and the...
Design for Variable Frequency Drive Applications
This paper presents fundamental design criteria used to evaluate the operational and economic feasibility of installing a variable frequency drive (VFD) on a petroleum products pipeline....
An Investigation of the Supports of a Water Main
Two 48 inch (1. 22 m) diameter cast iron pipes constructed 50 to 70 years ago form a major part of the potable water transmission system of Atlantic City. For the most part of their length,...
Monitoring of a Gas Main During Construction
This paper focuses on the task of formulating and implementing a viable plan for protecting an existing gas main located in a construction site where construction activities include excavation,...
Sliplining with Ductile Iron Pipe
The utilization of Ductile Iron Pipe (DIP) as an alternative to be considered for sliplining rehabilitation of sewer pipelines is evaluated. A recent experience in sliplining a failing...
Rehabilitation of Terminal Ballast Water Piping
In order to maintain the integrity of the ballast water piping system at the Marine Terminal of the trans-Alaska pipeline, a composite lining system was installed in the 42-inch (1,067...
Pipeline Infrastructure Rehabilitation
A significant amount of technological development has occurred during the past ten (10) years regarding the actual rehabilitation methods, or reconstruction procedures on the decaying...
Trenchless Techniques for Pipeline Installation, Renovation and Replacement
New construction methods have been developed primarily in Europe and Japan for underground pipeline work. The new methods, known as trenchless techniques, are primarily used when existing...
Monitoring the Effects of the Pipe Insertion Machine Technique
The results of an experimental study of the pipe insertion machine are presented in this paper. Strains induced in an adjacent pipeline, soil displacement, pipe deflection and vibrations...
Distribution System: Cost of Repair and Replacement
The Safe Drinking Water Act of 1974 mandates that EPA be concerned with the supply of potable water to the consumer. Although most emphasis has been placed on water quality as it leves...
Water Main Cleaning and Lining?A Utility Perspective
The Chester Water Authority is a regional water supply system located in Southeastern Pennsylvania serving a population of over 140,000 people in two countries and a large industrial complex...
Planning for Rehabilitation?MWRA Waterworks System
The Massachusetts Water Resources Authority (MWRA) operates and maintains 255 miles of large diameter distribution mains. Existing problems include increasing steel pipe repairs and extensive...
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