BS ISO 6338-2-2024 PDF

Full title and description

STB BS ISO 6338-2:2024 — Calculations of greenhouse gas (GHG) emissions throughout the liquefied natural gas (LNG) chain — Part 2: Natural gas production and transport to LNG plant. This document provides a standardized method to calculate GHG emissions from upstream natural gas production, gas processing and transport up to the inlet of an LNG liquefaction plant; it is published as ISO 6338-2:2024 and has been adopted as a British Standard (BS ISO 6338-2:2024).

Abstract

Part 2 of ISO 6338 gives a method to calculate GHG emissions during onshore and offshore natural gas production, gas gathering and boosting, gas processing and pipeline transport to the LNG plant inlet. It covers allocation of emissions where other products (e.g. condensate, LPG, domestic gas, sulphur) are produced, includes emissions across scope 1/2/3, and addresses measured and estimated sources such as combustion, flaring, vents and fugitive leaks. The standard excludes exploration, construction and decommissioning phases and does not cover compensation.

General information

• Status: Published / Active (International Standard; identical national adoption as BS ISO 6338-2:2024).
• Publication date: ISO edition published 2024 (ISO lists publication August 2024); adopted as BS ISO 6338-2:2024 (British publication date listed as 03 Oct 2024).
• Publisher: International Organization for Standardization (ISO); published nationally/retail by British Standards Institution (BSI) for the BS adoption.
• ICS / categories: 75.020 (Extraction and processing of petroleum and natural gas); 13.020.40 (Pollution, pollution control and conservation).
• Edition / version: Edition 1 (2024).
• Number of pages: BS adoption shows 18 pages (BS formatted publication); the ISO core document is 9 pages.

Scope

This part applies to facilities associated with producing natural gas (drilling and production wells, gathering networks and boosters, processing facilities, transport pipelines with compression) and covers GHG emissions from production, processing and transport up to the LNG liquefaction plant inlet. It applies to emissions across scope 1, 2 and 3 of the responsible organization and to gases CO2, CH4, N2O and fluorinated gases. The document is intended for facilities “under operation” (including commissioning and restarts) and excludes exploration, construction and decommissioning phases as well as carbon compensation.

Key topics and requirements

• Standardised calculation methods for GHG emissions during natural gas production, processing and pipeline transport to LNG plants.
• Coverage of all relevant emission sources: combustion, flaring, cold/process vents, fugitive leaks, and emissions associated with imported energy.
• Allocation rules where multiple products are co‑produced (LNG, domestic gas, condensate, LPG, sulphur, power export).
• Preferred units, conversions, recommended instrumentation and estimation methods for measured and estimated emissions.
• Explicit exclusions and boundaries (no coverage of exploration, construction, decommissioning, or compensation activities).

Typical use and users

Energy companies and operators of upstream natural gas assets, LNG project developers, environmental and emissions consultants, auditors, regulators and organisations preparing GHG inventories or life‑cycle assessments for LNG supply chains will use this standard to ensure consistent calculation and reporting of emissions from production and transport stages.

Related standards

ISO 6338-2 is part of the ISO 6338 series. The companion general part ISO 6338-1:2024 (Calculations of GHG emissions throughout the LNG chain — Part 1: General) provides definitions, system boundaries, preferred units and overall methodology referenced by Part 2. Users should consult ISO 6338-1 for definitions of scope 1/2/3, allocation principles and general reporting requirements.

Keywords

GHG, greenhouse gas, LNG, liquefied natural gas, natural gas production, gas transport, emissions calculation, CO2, CH4, N2O, fluorinated gases, scope 1, scope 2, scope 3, allocation, monitoring, ISO 6338, BS ISO 6338-2.

FAQ

Q: What is this standard?

A: It is ISO 6338-2:2024 (published as BS ISO 6338-2:2024 for the UK) — a technical standard specifying methods to calculate greenhouse gas emissions from natural gas production and transport to an LNG plant inlet.

Q: What does it cover?

A: It covers emission sources and calculation rules for production wells, gathering networks, boosting and processing facilities, and pipeline transport up to the LNG liquefaction plant inlet, including guidance on measurement, estimation and allocation to co‑products. It explicitly excludes exploration, construction and decommissioning phases and compensation.

Q: Who typically uses it?

A: LNG and upstream gas operators, project developers, emissions consultants, auditors and regulators use it to produce consistent, auditable GHG calculations for the LNG supply chain.

Q: Is it current or superseded?

A: It is current (published 2024). The ISO master document is ISO 6338-2:2024; the British adoption is published as BS ISO 6338-2:2024 (national publication date shown as 03 October 2024). Always check the issuing body (ISO or your national standards body) for any later amendments or revisions.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 6338 series on GHG calculations for the LNG chain; Part 1 (ISO 6338-1:2024) provides the general methodology and definitions that Part 2 references.

Q: What are the key keywords?

A: Key keywords include greenhouse gas (GHG), LNG chain, emissions calculation, natural gas production, transport to LNG plant, CO2, methane (CH4), N2O, fluorinated gases, allocation, monitoring and reporting.