April 2017, Vol. 244, No. 4

Features

Reducing Deepwater Pipeline Inspection Costs

Inspecting a pipeline is a complex operation. It is often fraught with complications due to the varying dimensions that the pipeline exhibits in order to operate in a deepwater environment. Designing the line with future inspections in mind is the exception, not the rule. As a result, a deepwater line usually features at least one of the following characteristics that complicate inspection: thick pipe wall, internal corrosion-resistant alloy (CRA) cladding, high-pressure and temperature, non-constant internal diameter, small internal diameter, along with challenging launching and receiving conditions, such as short traps, subsea launching, restricted work space on deck and flexible pipe. E

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