Some years ago, SPI, the Society of Plastics Industry,Inc, New York had issued a technical bulletin (cost a few dollars). Does anyone know if the Bulletin U118-R still valid, or if it has been renamed or withdrawn?
We are designing a buried 3" gas line some 200 m long to carry 70% H2S, 29% CO2, 0.0059% H2O, and the balance of C1 and C2, all in mol fractions. Design pressure is 1800 psig,(ANSI 900# RTJ flanges chosen) and design temp is 54C. Looking at NACE requirements and the fact that corrosion...