The cost estimation using the EDF method is briefly summarised in the following. The total installation factor, F T,CS , as a function of the equipment cost for a single piece of equipment in carbon steel is found from Table for all equipment. Using the installation factors in Table , the equipment cost was first corrected to 2020 (using a CEPCI index of 596.2) since the installation factors are on a 2020 basis as described in . Dimensioning using GPSA method . The diameter is estimated from a K-value of 0.1 m/s. Vessel wall thickness is estimated using ASME BPVC and selected material properties. Vessel weight is estimated on shell and ends adding 30% for supports and nozzles Gas volumetric flow, pressure and gas density Table . EDF method installation factors as a function of FOB equipment cost in carbon steel and associated piping installation sub-factor. Values are on a 2020 basis and sourced from . For equipment in other materials, a corrected installation factor, F T,other mat. , was calculated in accordance with :