Tensile armor wire breaks in flexible risers have been studied by measuring strain in wires during a series of full-scale dynamic pipe tension tests. This has resulted in an understanding of wire breaks described by parameters such as time evolution, spatial distribution and the scale of the measured strain change. With the measured strain data wire break events in flexible risers can be detected and discriminated from other events in the pipe structure. Hence, by instrumenting risers with a grid of fiber optical strain sensors embedded in the tensile wires a Wire Break Detection system can be implemented. The test data and the resulting knowledge of how strain variations from a wire break event propagate in a flexible riser are presented.

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