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GB/T 40702-2021Specification for geohazard prevention of oil and gas pipelines (English PDF)

油气管道地质灾害防护技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40702-2021 is the English-translated version of 油气管道地质灾害防护技术规范.

GB/T 40702-2021 sets out how geological hazards are to be managed along onshore oil and gas pipelines over their whole life cycle, from construction and operation to abandonment.

It covers the investigation and identification of hazards such as landslides, collapses, debris flows, ground subsidence, special soils and water damage, and the evaluation of hazard susceptibility, pipeline vulnerability and failure consequences.

It then deals with monitoring and detection, early warning levels and response, engineering prevention and active pipeline protection, emergency rescue, and data management and handover, with annexes on pipeline routing, flood prevention and pipe stress calculations.

It applies to onshore steel pipelines carrying oil and gas, but not to urban gas pipelines or to pipelines inside refinery and chemical plant areas. It was issued on 11 October 2021 and has applied since 1 May 2022.

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Document preview — GB/T 40702-2021

National Standard of the People's Republic of China

ICS: 75.200
Classification: E 16

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

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Geological disaster prevention work
4.1 General Principle
4.2 Construction Phase
4.3 Operation Phase
4.4 Abandonment stage
5 Investigation and identification
5.1 Overview
5.2 Investigation and identification methods
5.3 Investigation and identification content
6 reviews
6.1 General
6.2 Disaster susceptibility
6.3 Pipeline vulnerability
6.4 Evaluation of Failure Consequences
7 Monitoring and detection
7.1 Monitoring
7.2 Detection
8 Early warning
8.1 Overview
8.2 Warning levels and models
8.3 Early warning response
9 Engineering prevention
9.1 General
9.2 Active pipeline protection
9.3 Engineering prevention measures
10 Emergency rescue
10.1 General
10.2 Emergency rescue of common geological disasters
10.3 Emergency rescue measures
11 Data Management and Handover
Appendix A (normative) Requirements for pipeline routing
Appendix B (informative) Professional survey of geological hazards along the pipeline
Appendix C (informative) Pipeline flood prevention work content
Appendix D (informative) Survey contents and elements of common pipeline geological hazards
Appendix E (informative) Calculation method of pipe radial stability
Appendix F (informative) Calculation method of overall axial stability of pipe body
Appendix G (Informative) The layout of the stress/strain monitoring section of the pipe body, the installation of sensors and related calculation methods
Appendix H (Informative) Common application scenarios and operating procedures for pipe stress testing using ultrasonic methods
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies the content, methods and requirements of geological disaster protection for oil and gas pipelines, including investigation and identification, evaluation, monitoring and testing, Early warning, engineering prevention, emergency rescue, data management and handover, etc.

This document is applicable to geological disaster protection for the entire life cycle of onshore steel pipelines that transport oil and gas media.

This document does not apply to urban gas pipelines and pipelines in the plant areas of enterprises such as oil refining and chemical industries.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 12328 Comprehensive engineering geological map legend and color code

GB 17741 Earthquake Safety Evaluation of Engineering Site

GB 32167 Code for Integrity Management of Oil and Gas Transmission Pipelines

GB 50021 Geotechnical Engineering Survey Code (2009 Edition)

GB 50251 Code for Design of Gas Pipeline Engineering

GB 50253 Code for Design of Oil Pipeline Engineering

GB 50423 Code for Design of Oil and Gas Transmission Pipeline Crossing Engineering

DZ/T 0220 Debris flow disaster prevention engineering survey specification

DZ/T 0286 Geological Hazard Risk Assessment Specification

SY/T 6597 Technical specification for internal inspection of oil and gas pipelines

SY/T 6828 Oil and gas pipeline geological disaster risk management technical specifications

SY/T 7040 Oil and gas pipeline engineering geological disaster prevention design code

SY/T 7413 Technical Specification for Disposal of Discarded Oil and Gas Long-distance Pipeline

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Pipeline geohazard

Geological effects or disasters related to the geological environment that cause harm to pipeline construction, transportation system safety and operating environment.

Note: The geological disasters mentioned in this document include rock and soil disasters, special soil disasters, water damage disasters and geological structural disasters. Rock and soil disasters include landslides, collapses, Debris flow, ground subsidence (including only goaf subsidence and karst collapse), ground subsidence and ground fissures; special soil disasters (including only loess collapsibility, expansive soil Expansion and shrinkage, frost heaving and thawing settlement of frozen soil, salt swelling and swelling of saline soil, and wind erosion sand burial); water damage includes slope water damage, river channel water damage and terrace water damage; geological structure Natural disasters only include active faults and earthquakes.

3.2 List of geological hazards

During the entire life cycle of the pipeline, the characteristic attributes, evaluation results, remediation planning content, and risk mitigation measures of geological disasters can be registered or described.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 35 pages — is available in the English PDF.

Referenced standards

Normative references

GB 50021 · GB 50423

Cited by

GB/T 27512-2025Risk assessment methods for buried pipelines

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GB/T 47444-2026|GB/T 47764-2026|GB/T 47765-2026|GB 46767-2025|GB/T 46419-2025|GB/T 46423-2025

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