TPi July 2015

Camera system

and the Netherlands. It has been recommended that this be applied as the Exova global standard method for oil and gas laboratories conducting cyclic plastic strain simulations. This continued roll out across the Exova labs shows how influential these new findings have been. The transition to OSM systems for this aspect of testing of subsea pipelines will continue to be a popular technique.

The present RTSS camera systems have been used in a number of two- and four-post test frames ranging from 50kN to 1,800kN capacity to test specimens of varying length and cross section with cyclic strain cycles of up to 3.5%. These alternative uses for the equipment are another key driving force when it comes to considering this type of OSM system. The camera system at Exova Daventry has been used to perform cycle straining of pipe material then pulled to failure, with positive results and more investigations underway to further the scope for the introduction of OSMs into other areas of the laboratory. Conclusion The adoption of OSM systems by Exova has significantly reduced preparation time when compared with strain gauging. In what is usually a very time-critical test process, this is an important aspect that Exova is keen to use moving forward with its clients.

Ed Fowkes

Mr Fowkes is a technical specialist and the production manager based at Exova’s facility in Daventry, UK. He is responsible for ensuring that test programmes meet clients’ needs both technically and commercially, as well as driving continual improvement within the laboratory. He has experience overseeing multi-stage testing projects, predominantly for the oil and gas industry, and has proven success in developing laboratory processes and capabilities.

Exova – UK www.exova.com

Looking to the future, non-contacting OSM for pre-straining has now been adopted in Exova’s laboratories in Daventry

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Tube Products International July 2015

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