This article is part 2 of the series, i.e., in continuation to the Part 1 series of this post: Read the complete part 1 here: Offshore World October-November 2019, GRE Piping Oil and Gas Industry: Part 1
This was originally covered in the Offshore World (OSW), a premier magazine, launched in 2003, covering key issues and trends relative to upstream, midstream, and downstream of the entire hydrocarbon value chain.
While carrying out these projects, CPP has done extensive cutting edge work in the field of design and manufacturing. We have used very efficient filament winding techniques which resulted in stronger laminates capable of sustaining very high pressures along with high chemical resistance.
We have composite pipe designs that can sustain design pressures up to 60 bars.
CPP has developed fire retardant piping as per ASTM E 84 as well as ABS standards. These pipes can also be made electrically conductive to dissipate static charges.
Unlike metal, GRE material has a wide range of properties which changes with fibre orientation, lay up sequence, glass content etc.
CPP carries our Stress analysis, Surge analysis (wherever required) & Static calculations before start of manufacture.
This is done to calculate the stresses, displacements, forces and moments acting on the piping under various conditions/ cases (eg : sustained, operating, hydrotest) due to the combined effect of internal pressure, max differential temperature, bending, and external loads. The system is modelled and analyzed using Caeser II Pipe Stress Analysis software version 6.10 according to ISO 14692 or BS 7159.
Several design conditions are used for the analysis for eg : Design Pressure, Hydro test Pressure, Design Temperature, Average Installation Temperature, Co-efficient of Friction.
Besides the above, Material Properties such as Pipe and fitting thickness, Tee dimensions,Elastic Modulus (Axial and hoop), Poisson Ratio, Shear Modulus, Long Term Axial Stress and Hoop Stress, Biaxial Stress ratio, qualified stress for Bends, Thermal factor are used as input for the stress analysis.
Stay tuned with us here for the final, Part 3 of this series post.
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