Plastic Pipe Systems: Failure Investigation and Diagnosis

1st Edition - August 21, 2006

Author: Mehdi Farshad

Hardback ISBN:

9 7 8 - 1 - 8 5 6 1 7 - 4 9 6 - 1

eBook ISBN:

9 7 8 - 0 - 0 8 - 0 4 6 3 9 3 - 3

Industrial and domestic piping is increasingly made from various plastics and composites, and these materials withstand heavy use over long periods. They are, however, affected by… Read more

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Industrial and domestic piping is increasingly made from various plastics and composites, and these materials withstand heavy use over long periods. They are, however, affected by environmental and other factors over time and can degrade, causing major problems within piping systems. Farshad's book deals with why plastic pipes and systems fail, and with how to investigate and diagnose such failures. Pipes may buckle, fracture, change in dimensions and colour, blister and delaminate, corrode through stress, be abraded and obstructed: all these cause problems and lead to loss of efficient operation of a system. The author's experience is backed up by a large data-base of results

About the author
Preface
Chapter 1: Plastic pipe systems
- Publisher Summary
- 1.1 Polymeric materials
- 1.2 Plastic pipes
- 1.3 Pipes as systems
- 1.4 Classification of plastic pipes
- 1.5 Requirements for the piping systems
- 1.6 Environmental effects
- 1.7 Life cycle of plastic pipes
- 1.8 Initial stresses in plastic pipes
- 1.9 Ageing of plastic pipes
- 1.10 Reliability of pipelines
- 1.11 General procedure for reliability assessment
- 1.12 General safety questions related to pipe systems
Chapter 2: Failure investigation of plastic pipes
- Publisher Summary
- 2.1 Failure phenomenon
- 2.2 Sources of potential failures
- 2.3 Types of failures
- 2.4 Failure mechanisms in polymeric products
- 2.5 Failure analysis
- 2.6 Why failure analysis?
- 2.7 Parallel between engineering and medical diagnosis
- 2.8 Terminologies related to failure investigation
- 2.9 Steps in failure investigation
- 2.10 Details of steps in failure investigation
- 2.11 Testing of plastic pipes
- 2.12 Failure modes and potential causes
- 2.13 Qualitative risk estimation of plastic pipe connections
- 2.14 Lessons learned from pipeline failures
- 2.15 Failure case studies
Chapter 3: Fracture of plastic pipes
- Publisher Summary
- 3.1 Fracture
- 3.2 Fracture modes
- 3.3 Fracture process
- 3.4 Fracture due to normal stress
- 3.5 Macroscopic observations on the fracture surfaces
- 3.6 Crack types
- 3.7 RCP in plastic pipes
- 3.8 Types of fractures in pipes
- 3.9 Guideline for diagnosis of fractured pipe
- 3.10 Failure case studies
- 3.11 Preventive measures against fracture of plastic pipes
Chapter 4: Buckling of plastic pipes
- 4.1 Stability and instability
- 4.2 Modes of elastic instability
- 4.3 Excessive deformation
- 4.4 General causes of buckling of plastic pipes
- 4.5 Buckling of buried pipes
- 4.6 Buckling during installation
- 4.7 Buckling due to elevated temperatures
- 4.8 Buckling of concrete-embedded pipes
- 4.9 Buckling of the pipe liners
- 4.10 Local buckling due to concentrated loads
- 4.11 Types of buckling and excessive deformation
- 4.12 Assessment of buckled pipes
- 4.13 Assessment of excessive deformations
- 4.14 Buckling failure cases
- 4.15 Preventive measures against buckling and excessive deformation
Chapter 5: Weathering, color, and dimensional changes
- Publisher Summary
- 5.1 Weathering
- 5.2 Color changes
- 5.3 Dimension changes
- 5.4 Assessment of color and dimensional changes
- 5.5 A case study related to color and dimensional changes
- 5.6 Preventive measures against weathering, color, and dimensional changes
Chapter 6: Voids, blisters, and delaminations
- Publisher Summary
- 6.1 Categories of local material failure
- 6.2 Assessment of local damages
- 6.3 Investigation of failure cases
- 6.4 Preventive measures against voids, blisters, and delaminations
Chapter 7: Fatigue, corrosion, and wear
- Publisher Summary
- 7.1 Introduction
- 7.2 Fatigue
- 7.3 Corrosion
- 7.4 Wear
- 7.5 Assessment of fatigue, corrosion, and wear
- 7.6 A typical failure case study
- 7.7 Measures against fatigue, corrosion, and wear
Chapter 8: Clogging of the pipe system
- Publisher Summary
- 8.1 Causes of clogging
- 8.2 Types of clogging
- 8.3 Assessment of clogging
- 8.4 A failure case investigation
- 8.5 Preventive measures against clogging
Chapter 9: The knowledge base of an expert system for failure diagnosis
- Publisher Summary
- 9.1 Introduction
- 9.2 A short description of the expert system EFAP
- 9.3 Failure analysis procedure by EFAP
- 9.4 Failure analysis
- 9.5 Failure assessment
- 9.6 EFAP - An expert system software
Glossary of terms and definitions
Bibliography
Index