By Mehdi Farshad
Business and family piping is more and more made of a number of plastics and composites, and those fabrics face up to heavy use over lengthy classes. they're, notwithstanding, plagued by environmental and different components through the years and will degrade, inflicting significant difficulties inside of piping platforms. Farshad's publication offers with why plastic pipes and platforms fail, and with tips to examine and diagnose such disasters. Pipes may possibly buckle, fracture, switch in dimensions and color, blister and delaminate, corrode via rigidity, be abraded and obstructed: a lot of these reason difficulties and result in lack of effective operation of a method. The author's event is sponsored up by way of a wide data-base of effects * huge audience * the single publication masking the total topic * special approach in accordance with lengthy adventure
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Extra info for Plastic Pipe Systems: Failure Investigation and Diagnosis
Brittle versus Ductile) Determination of short-term burst resistance of pipe under internal hydrostatic pressure Long-term properties, creep rupture behavior Determination of the pipe ring stiffness in the air, in wet condition, and in other medium Determination of the pipe resistance to aggressive medium (such as acids environment) Determination of the fracture toughness of the pipe in various environments Determination of dynamic fracture toughness Determination of buckling resistance of pipe under external hydrostatic pressure Determination of structural integrity, determination of in-situ properties DSC: differential scanning calorimetry; DTA: differential thermal analysis; FTIR: Fourier transform infra red; GC: gas chromatography; GLC: gas liquid chromatography; HPLC: high-performance liquid chromatography; MS: mass spectrometry; NMR: nuclear magnetic resonance; OIT: oxygen induction tests; SEM: scanning electron microscopy; TG: thermo-gravimetry; TGA: thermo-gravimetric analysis; TMA: thermo-mechanical analysis; UV–VIS: ultraviolet–visible spectroscopy.
Severe damage can cause the pipeline to leak or rupture, resulting in an immediate hazard to property and life. Even the damages which appear to be minor can, over a period of time, weaken a pipeline and cause leakage or rupture in a later period. Damage can also result from large or small excavation projects, caused by a contractor during, for example, constructing a building or a road, adjacent construction, drilling, and impact loading. The intended damage and sabotage actions are the intervention in the piping installations, specially exposed pipelines, which should by no means be underestimated.
Axial compression Bending Traffic load Settlement Uplift External interference Impact Vibration Fatigue Residual stresses Other mechanical actions Thermal High temperature UV radiation Fire Frost Other thermal effects Thermal effects? , external heat sources? , UV lamps around? , internal fire? Low inside or outside temperatures? Chemical Water Oxygen Acids Alkalis Solvents Oils Benzene Other chemical agents Chemical effects? , ionized water? , inside? , inside? , inside? what type of solvent? , inside?
Plastic Pipe Systems: Failure Investigation and Diagnosis by Mehdi Farshad