Objective
To carry out an independent evaluation of the properties of prototype cast steel node for offshore structures and to define defect acceptance levels and mechanical properties for specification purposes.
Phase 1 has demonstrated that a large node can be produced as a sound casting to a high standard and to a realistic production schedule.
Phase 2 has demonstrated that the surface condition of the casting was good and that ultrasonic testing is in general a satisfactory technique for detecting and locating buried defects such as shrinkage porosity and hot tears. The stub-to-tubular weld and weld repair trials have been successfully completed. Mechanical property values in a large casting have been shown to vary within wide limits and the data obtained can be utilised for the definition of minimum property values for specification purposes.
The project encompasses the development work needed to enable cast steel nodes to be specified with confidence for use in offshore steel structures. Phase 1 consisted of design and production of a full-size prototype launch brace node as a casting. Phase 2 comprises 100% surface and volumetric non-destructive testing to determine casting, quality, welding and weld repair demonstration and evaluation and mechanical testing of a large number of representative samples taken from different parts of the casting.
Programme(s)
Topic(s)
Call for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
G2 5DD GLASGOW
United Kingdom