T/DHFCA 9-2025 Active Group standards

T/DHFCA 9-2025 Hydrogen Pipeline Safety Technical Specifications

T/DHFCA 9-2025

Publish Date: 2025-12-31 Implement Date: 2026-01-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us
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Basic Information

Standard Code: T/DHFCA 9-2025
Standard Type: Group standards
Standard Status: Active
is_force_gb: no
CCS Name: Other petroleum products
ICS Name: Pipe components and pipe systems
Publish Date: 2025-12-31
Implement Date: 2026-01-30

Scope

Preface 1. Scope This document specifies the safety technical requirements for hydrogen pipelines (including long-distance pipelines and urban gas pipelines) in terms of pipeline system design and composition, materials, construction and acceptance, process and station design, venting systems, leak prevention and control, safety distances, and operation and maintenance. 2. Normative reference documents 3. Terms and definitions 3.1 Hydrogen pipeline 3.2 Long-distance hydrogen pipeline 3.3 Urban hydrogen pipeline 3.4 Buried laying 3.5 Overhead laying 3.6 Safety distances 3.7 Sensitive areas 3.8 Leak detection system 3.9 Interlocking control 3.10 Alarm threshold 3.11 Multi-point monitoring 3.12 Hydrogen transmission station 3.13 Venting system 4. Pipeline system design and composition 4.1 General requirements 4.2 Laying methods 4.3 System composition 4.4 Long-distance pipelines 4.5 Urban gas pipelines 5. Materials, construction, and acceptance 5.1 Material requirements 5.2 Line construction 5.3 Welding 5.4 Testing and acceptance 6. Process and station design 7. Venting system design and requirements 8. Leak prevention and control 9. Safety distances 10. Operation and maintenance

Development Information

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