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This document defines requirements for the fabrication, welding, examination and testing of new, metallic piping systems up to 69 000 kPa (ga) maximum, within temperature range limits for the materials meeting the requirements of ASME B31.3, on fixed and floating offshore production facilities and onshore production, processing and liquefaction plants. This document is applicable to all pressure retaining components and any non-pressure retaining component, such as a pipe support, welded directly to a pressure retaining component. This document is not applicable to: - marine-related piping systems, e.g. ballasting piping systems, systems covered by classification societies; - non-metallic piping systems.