Page 190 - Reliability and Maintainability of In service Pipelines

174 Index

D H
Deterioration of pipes, 28 45 Heger Pressure Distribution, 23, 24f
clay pipes, 45 Heuristic models, 97 98
concrete pipes, 29 36 High density polyethylene (HDPE) pipes, 12 13
ferrous pipes, 36 42
GRE resin composite pipes, 44 45 I
plastic pipes, 41 42 Image processing, 62
seamless pipes, 10 Importance sampling, 116
Digital scanning and evaluation technology In-line inspection (ILI) technique, 66
(DSET), 69 Inspection of pipelines, 59 69, 70t
acoustic detection, 67 68
E CCTV method, 59 61, 60f,61f
Earth load, 22 23, 24f Ground Penetrating Radar, 69
Environmental stress cracking (ESC), 11 12 laser scanning, 62 63, 62f
Epoxy coating, 72 magnetic flux leakage technique, 65 67, 66f
Evolutionary polynomial regression (EPR), 96 radiographic testing, 67
ultrasonic intelligent pigging, 63 65, 65f
F Integrity of pipelines, 51 59
Failure of pipelines
causes of, 52 54, 52f K
modes of, 54 59, 56f KANTARO robotic system, 63
rate prediction, 90
Ferrous pipes, 8 11 L
deterioration of, 36 42, 38t Landslide, 54
rate of corrosion, 41 42, 43f Laser scanning, 62 63, 62f,70t
First-Order Reliability Methods (FORM), 84, 95 Leakage, 56
First-order second-moment reliability method Limit state, 54 55
(FOSM), 92 95 Limit state function, 85
First passage probability method, 105 107, of cast iron water mains in the UK, 141 143
154 155 of concrete sewer pipes in the UK, 152,
Flexural stress, 57 161 163, 162t, 164f
Flow dead loads, 23 of mild steel water pipes, 131 132, 133t
Fracture toughness, 58 59 Live load, 23 25
Freeze thaw action, 27 Loading on pipelines, 22 25
Fuzzy logic, 97 earth load, 22 23, 24f
flow dead loads, 23
G live load, 23 25
Galvanic corrosion, steel pipes, 31 32 Longitudinal deflection, 55
Galvanized iron pipes, 9 10 Longitudinal stress, 20 21
Gamma distributed degradation (GDD) model, Loss of wall thickness, 4
110 112, 155
with corrosion depth data, 110 112, 113f M
with unavailability of corrosion depth data, Magnetic flux leakage (MFL) technique, 65 67,
112 114, 115f 66f,70t
Gamma process concept, 108 114 Maintenance of pipelines, 69 75
GDD model with corrosion depth data, cathodic protection, 73, 73f
110 112 cleaning, 74
problem formulation, 108 109, 110t coatings, 72
Glass reinforced epoxy (GRE) resin composite corrective action, 74 75
pipes, 14 Manufacturing error, 52
deterioration of, 44 45 Marston’s equation, 22 23
Ground Penetrating Radar (GPR), 69, 70t Materials of pipelines, 7t