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GB/T 46875-2025Quality requirements for carbon dioxide entering long-distance transportation pipelines (English PDF)

进入二氧化碳长输管道介质质量要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2025

Implementation date

July 1, 2026

Scope

GB/T 46875-2025 is the English-translated version of 进入二氧化碳长输管道介质质量要求.

GB/T 46875-2025 is the Chinese standard "Quality requirements for carbon dioxide entering long-distance transportation pipelines". Its scope clause reads: This document specifies the quality indicators, sampling and testing methods, and inspection rules for the medium entering long-distance carbon dioxide pipelines.

This document applies to different phases of carbon dioxide media that have been treated and transported via long-distance pipelines. Its clauses include terms and definitions.

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Document preview — GB/T 46875-2025

National Standard of the People's Republic of China

ICS: 27.010
Classification: F 29

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4.Quality Indicators
5.Sampling and Testing Methods
6.Inspection Rules
Appendix A (Informative) Water Dew Point Temperatures under Different Water Contents and Pressures

1 Scope

This document specifies the quality indicators, sampling and testing methods, and inspection rules for the medium entering long-distance carbon dioxide pipelines.

This document applies to different phases of carbon dioxide media that have been treated and transported via long-distance pipelines.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 5832.1 Gas analysis – Determination of trace moisture – Part 1.Electrolysis

GB/T 5832.2 Gas analysis – Determination of trace moisture – Part 2.Dew point method

GB/T 11060.3 Determination of sulfur compounds in natural gas—Part 3.Determination of sulfur by dual-path detection of lead acetate reaction rate hydrogen content

GB/T 11060.8 Determination of sulfur compounds in natural gas—Part 8.Determination of total sulfur content by ultraviolet fluorescence spectrophotometry

GB/T 28726 Gas Analysis - Helium Ionization Gas Chromatography

HJ1043 Automated Determination of Nitrogen Oxides in Ambient Air by Chemiluminescence Method

SY/T 6892 Method for detecting particulate matter in natural gas pipelines

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 carbon dioxide medium

A medium whose main component is carbon dioxide.

3.2

Carbon dioxide with both temperature and pressure above the critical point.

[Source. SY/T 7440-2019, 2.0.6]

3.3

Carbon dioxide at a temperature below the critical temperature and a pressure above the critical pressure.

[Source. SY/T 7440-2019, 2.0.7]

3.4

In pipeline transportation of carbon dioxide in liquid, dense, and supercritical phases, some chemical substances exist in a gaseous state.

Note. N2, Ar, H2, CH4, and O2, etc.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

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