KASHAGAN FIELD DEVELOPMENT

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Karnataka, India

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We have designed the piping system connected to the Temperature Swing Adsorber Regeneration Gas Cooler and ensured compliance to ASME B31.3 allowable limits. The gas was designed to run at a pressure of 105 bar and a temperature of 315 °C. The specified pipework was constructed of LTCS A333-6 rated to CL900 RTJ ASME B16.5/B16.47-A. We determined the pipe stresses for various load cases and documented the forces and moments at the adsorber connections, at pipe anchor points, and at supports.

We considered a vertical expansion loop to overcome overstresses in strategic locations where it was not possible to reroute the pipes. We have assessed predetermined trunnions and dummy legs utilizing the Kellogg method to ensure the local stresses are not exceeded to a damaging effect. Each flange within the system’s boundary limits was assessed for flange leakage calculation (ASME III Div. 1 NC 3658) to ensure leak-free flange joints against all predefined load cases. Swing Adsorber Regeneration Gas Cooler allowable Nozzle Loads were evaluated to (API 661) limits.