Page 192 - Reliability and Maintainability of In service Pipelines

176 Index

Sewer pipes, sulfide corrosion in, 3 Structural systems, reliability of, 86 88, 87f
Shear stress, 57 Sulfide corrosion
Simulation techniques, cementitious sewers, 2 3
83 84
Statistical models, 96 T
Statistical uncertainty, 83 Thermoplastic pipes, 12 13
Steel pipes, 6 8, 10 Third party interference, and deformation, 54
corrosion in, 53f Time-dependent reliability analysis, 84, 103, 105f
ring stability of, 18 22, 21f,24f first passage probability method, 105 107
Stochastic model, for residual gamma process concept, 108 114
strength, 125 126 GDD model with corrosion depth data,
Stochastic process, 4 110 112, 113f
Strength limit state, of cast iron water mains in GDD model with unavailability of corrosion
the UK, 143, 143f, 144t depth data, 112 114, 115f
Stress Monte Carlo simulation method, 114 116
in buried pipelines, 25 28, 25t problem formulation, 108 109, 110t
corrosion, 52 Toughness limit state, of cast iron water mains in
Stress corrosion cracking (SCC), 40 41 the UK, 144 145
Structural reliability analysis, 5, 79, 98t Types of pipelines, 5 15, 6t
background and methods, 90 98
deterministic models, 91 92 U
probabilistic models, 92 96 Ultimate limit states, 15 16, 82
basic problem, generalization of, 84 86, 85f Ultrasonic intelligent pigging, 63 65, 65f,70t
of cast iron water mains in the UK, 141 151 Uniform corrosion, 32
of concrete sewer pipes in the UK, 151 163 Unplasticized PVC (UPVC), 11
defined, 80 81
of mild steel water pipes in Australia, W
130 140 Wall thickness determination, for internal
of oil and gas pipelines in pressure and handling, 16 17, 17f
USA, 120 130 Wall thrust failure, 58
sensitivity analysis, 88 90 Water Infrastructure Network, The, 3
omission sensitivity factor, 89 90 Water Services Association of Australia, The
relative contribution, 88 89 (WSAA), 3
sensitivity ratio, 89 World Factbook The, 2
structural systems, reliability of,
86 88, 87f,87f Y
theory of, 81 84 Yield stress, 20 21