Overview

This document provides a method to calculate the GHG emissions from an LNG liquefaction plant, onshore or offshore. The frame of this document ranges from the inlet flange of the LNG plant’s inlet facilities up to and including the offloading arms to truck, ship or railcar loading. The upstream supply of gas up to the inlet flange of the inlet facilities and the distribution of LNG downstream of the loading arms are only covered in general terms. This document describes the allocation of GHG emissions to LNG and other hydrocarbon products where other products are produced (for example, LPG, domestic gas, condensates, sulphur, etcetera). This document defines preferred units of measurement and necessary conversions. This document also recommends instrumentation and estimations methods to monitor and report GHG emissions. Some emissions are measured and some are estimated. This document is applicable to the LNG industry. Applications include the provision of method to calculate GHG emissions through a standardized and auditable method, a means to determine their carbon footprint. The responsible national standardization committee is Working Committee NA 032-02-10 AK "Anlagen und Ausrüstung für Flüssigerdgas" ("Installation and equipment for LNG") at DIN Standards Committee Gas Technology (NAGas).

Responsible national committee

NA 032-02-10 AA - Installation and equipment for liquefaction, vaporisation, storage, and transport of cryogenic liquified gases  

Responsible international committee

ISO/TC 67/SC 9/WG 10 - Calculations of GHG emissions throughout the LNG chain