Menu Expand
Integrated High Resolution Imaging Radar and Decision Support System for the Rehabilitation of WATER PIPElines

Integrated High Resolution Imaging Radar and Decision Support System for the Rehabilitation of WATER PIPElines

Matthaios Bimpas | Angelos Amditis | Nikolaos Uzunoglu | Antonia Lorenzo | Anibal Vega

(2010)

Additional Information

Book Details

Abstract

Many EU cities are experiencing increasing problems with their water pipeline infrastructure. The cost of replacing these old, worn-out systems, if left to deteriorate beyond repair, is astronomical and clearly beyond the resources of many communities. Replacement, however, is not the only choice as many of these systems can be rehabilitated at 30 to 70 percent of the cost of replacement. Accordingly, resources are now increasingly being allocated to address pipeline rehabilitation management issues. Due to the emphasis on sustainable management, risk-based approaches for the rehabilitation management of the water supply network need to be developed. Rehabilitation decisions should be based, interalia, on inspection and evaluation of the pipeline conditions. Yet, utilities cannot locate a number of their old pipes and current inspection technologies typically do not provide the needed detailed information on pipeline damage. 
The objectives of this book are to describe the research work carried out in the framework of WATERPIPE project aiming:

  • To develop a novel, high-resolution imaging ground penetrating radar for the detection of pipes, leaks and damages and the imaging of the damaged region and evaluate it at a test site
  • To produce an integrated system that will contain the equipment in "1" and a Decision Support System (DSS) for the rehabilitation management of the underground water pipelines that will use input from the inspections to assess, probabilistically, the time-dependent leakage and structural reliability of the pipelines and a risk-based methodology for rehabilitation decisions that considers the overall risk, including financial, social and environmental criteria
  • To field test the equipment and the DSS 

Table of Contents

Section Title Page Action Price
Half Title 1
Title 3
Copyright 4
Contents 5
Abbreviation list 9
Editorial 11
Chapter 1: The problem and the main objectives of WATERPIPE project 13
THE PROBLEM 13
OVERVIEW OF THE BUSINESS OPPORTUNITY 14
Water leakage costs 14
Current methods of detection 15
Acoustic systems 15
Flow monitoring 15
Common drawback 15
Additional problems 15
Damage to water infrastructure 15
Damage to adjacent infrastructure 15
Drivers for change 16
The WATERPIPE objectives 16
DESCRIPTION OF THE BOOK STRUCTURE 17
REFERENCES 18
Chapter 2: Introduction to the asset management 19
ASSET MANAGEMENT 19
WHY ASSET MANAGEMENT? 19
ASSET MANAGEMENT CHALLENGES 20
ASSET LIFE-CYCLE PRACTICES 20
Asset creation 21
Operation and maintenance 21
Condition assessment and performance monitoring 21
Asset renewal (rehabilitation and replacement) 21
Asset disposal 22
CONCLUSIONS 22
REFERENCES 22
Chapter 3: Leakage monitoring and control: Pressure management, detection and location of leaks 23
CONTROL OF LEAKAGE USING DISTRICT METERED AREAS (DMA) 23
THEORY OF DMA MANAGEMENT 23
DMA LITERATURE REVIEW 24
DISTRICT METERED AREAS 24
Definition 24
Objective 24
Advantages 24
Disadvantages 25
Design criteria 25
PRESSURE MANAGEMENT 25
EFFECT OF PRESSURE 27
COMMUNICATION TECHNOLOGY 27
IMPLEMENTING PRESSURE MANAGEMENT 29
FLOW MODULATION 29
LEAKAGE CONTROL USING MINIMUM NIGHT FLOW (MNF) 30
REFERENCES 31
Chapter 4: Equipment for leak detection and location 33
WHAT TECHNOLOGIES MAY FIND LEAKS IN ‘DIFFICULT’ PIPES? 33
THE ‘‘CONVENTIONAL’’ TECHNOLOGIES 34
The leak noise correlator – established technology with new features 34
Leak localizing – a new survey tool 34
Correlating noise loggers 34
Gas injection 35
THE ‘NEW’ TECHNOLOGIES 35
Correlation using low-frequency hydrophones 35
Chicago case study 35
Signal analysis 36
In-pipe acoustic technology 36
The Sahara 36
Wireless technology 37
WHAT IS GPR AND HOW DOES IT WORK? 37
HOW DOES GPIR DIFFER FROM GPR? 37
GPIR PIPE LOCATION METHODOLOGIES 38
DATA INTERPRETATION 38
ADVANTAGES & LIMITATIONS 38
LEGISLATION & STANDARDS 39
USE NEAR SENSITIVE RADIO ENVIRONMENTS 40
REFERENCES 40
Chapter 5: Usage of GPIR devices: The WATERPIPE ground penetrating imaging radar – GPIR 41
METHODOLOGY 41
IMPLEMENTATION OF THE GROUND PENETRATING IMAGING RADAR – GPIR 42
Operation principle 42
The prototype GPIR 43
BASIC HARDWARE SYSTEM COMPONENTS FOR THE FIRST GPIR 44
Transmitter unit 44
Receiver front end 45
Signal digitizer, computer and image display 46
MODIFICATIONS IN THE UPDATED VERSION OF THE SYSTEM 49
SOFTWARE DESCRIPTION 50
1. Software for acquisition and control 50
Computer and image display 50
Signal digitizer 51
2. Software for image reconstruction 51
3. Software for visualization and rendering 52
LEAKING SYSTEM: A COMPLIMENTARY RADAR SENSOR EMPLOYED TO DETECT AND LOCATE WATER LEAKS 52
Description of the system 52
Detection criteria for the water leaks 54
REFERENCES 55
Chapter 6: Measurements with the WATERPIPE GPIR system and the LEAKING system 56
INITIAL MEASUREMENTS USING THE WATERPIPE SYSTEM 56
Preliminary lab measurements 57
Measurements with the system in the test site (NTUA/EYDAP) 57
Ability to perform 3-D imaging in the underground media 57
Testing of the performed algorithms 59
REAL MEASUREMENTS BY USING THE ENHANCED VERSION OF THE WATERPIPE GPIR 60
MEASUREMENTS BY USING THE LEAKING SYSTEM AT A REAL WATER LEAKING CONDITIONS 62
Test site measurements 62
Description of the test site 62
Measurement results 62
Comparative measurements in an urban city of Germany 65
CONCLUSIONS 66
REFERENCES 66
Chapter 7: Design, implementation, testing and refinement of the expert system, the data base, the data manager and the geographic information system GIS module 68
INTRODUCTION 68
SYSTEM ARCHITECTURE 68
Logical system view 69
The physical system view 71
Programming languages 71
Module interaction/database integration 71
Graphical User Interface (GUI) design 71
Platform issues 71
DATA DESCRIPTION 71
On conceptual modeling 72
MODULE SPECIFICATION – INTEGRATION 72
The user interface – UI 74
GIS interface specification 76
The query manager 76
The data manager – DM 76
The API concept 77
Chapter 8: Field testing report for the Decision-Support-System (DSS) 78
TESTING OF THE DSS IN AMGA, ITALY 78
Software application 78
Verification tests 83
Result 86
AQUASERV, ROMANIA 86
Software application 86
Verification tests 88
RISA, GREECE 96
Input information 96
Verification tests 96
CONCLUSIONS 97
Conclusions reached by AMGA 97
Conclusions reached by AQUASERV 97
Conclusions reached by EYDAP 99