Fire integrity of flanges on Skarv

Aker BP have been reviewing fire integrity of flanges connected to the HP/LP flare system on Skarv, and asked Petrell to perform some analyses. Fire integrity analyses have been performed for RF WN flanges of selected isolation valves on Skarv in pipe class 150#. The analyses have used simulation models assuming symmetrics in the cases where this was convenient. However, for the 8″, 10″ and 16″ flanges it has been taken into consideration that the flange on the pipe-side and on the valve-side are not identical and are thereby modelled asymmetric