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Large pressure vessels called Coke Drum used in delayed coking of refining process were fabricated in pieces in shop, then transported to The Republic of Chile by sea, and assembled integrally at site, because it was impossible to transport them in one piece by their heavy weight and large diameter. In recent years, coke drums have been expanding each year to meet the growing demand for coking equipment with larger throughputs. In response to this trend, our production facilities have been continually improving, and quality control systems for site assembly have been established. Preliminary studies for all phases of construction were performed sufficiently by related parties including sub-contractors. Consequently, the project was successfully completed within the scheduled period. This report presents engineering technology of design, shop fabrication and site assembly of large Coke drums which were fabricated according to ASME code section VIII division 1 with code stamp requirement.
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