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The Beacons

By North Sea Jacket Structures and A Nelson


This report presents the Technical Performance Measures (TPM) methodology that has been developed to enable a first point assessment of North Sea steel jacket structures to be made· ● The methodology de-emphasises the quantitative structural reliability predictions that are currently employed in the North Sea safety case regime and employs a more qualitative approach to assessing the structural reliability of individual installations. The approach takes into consideration the age of the structure, structural configuration and functionality to generate a relative risk index. This index is semi-quantitative and provides an indication of the structure’s performance in relation to other steel jacket fixed installations.· ● The measure of platform vulnerability is based upon the load capacity of the undamaged structure and that when the structure’s most critical bracing member is severed.· ● The measure of a platform’s consequence of failure is based upon a semi-quantitative approach that considers the nature of the field and the platform’s functionality. Benefit is taken from a bridge-linked complex. The methodology presented in this report has used a number of arbitrary values in which to derive key components of both the likelihood and consequence measures. These values have been chosen fo

Year: 2014
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