Design verification in accordance with the ASME VIII, PD5500, ASME B31.3 or API 6A design code is the forte of our design department. We have developed an efficient software package to allow quick and accurate design checks to be performed on standard flange profiles (e.g. Weld Neck, Blind etc.) and also on nonstandard flange profiles (e.g. Anchor / Hanger, Flanged Outlets, Studded Blocks etc.) and proprietary flange profiles (e.g. Taper Lok, Swivel Ring etc.).
A set of formulae based calculations is generated for each analysis that shows the methods used to establish the various flange stresses. A comprehensive design report is always provided with any design verification to discuss the approach, describe the method and draw a conclusion on the final result which will enable the non-engineers to understand the findings of an analysis.
The design analysis of a pipeline flange typically considers external loads pre-determined by the client, consisting of axial force, shear force, torsion and bending moment. The calculations however, can be performed to reverse this scenario and calculate the maximum external loads capacity of a flange to enable the pipeline engineer to design around the maximum capacity. External loads are considered by conversion to an equivalent pipeline pressure using well established techniques.
A set of flange design calculations does not just consider flange stresses from which a conclusion can be drawn. The applied bolt pre-tension to a joint is very important and is a common topic for discussion within the design report. Also, of significant importance is an analysis of all loads at the weld bevel section of the flange using BS8010 pipeline analysis techniques.
Taper Lok® flange designs are also verified by standard ASME VIII methodology but also include some proprietary calculations to consider the unique Taper Lok® pressure energised sealing technology.
