G 221 Guideline 12/2021
ab 320,56 €
DVGW Deutscher Verein des Gas- und Wasserfaches e.V. - Technisch-wissenschaftlicher Verein -
Josef-Wirmer-Straße 1–3
53123 Bonn
Sicherheitshinweis entsprechend Art. 9 Abs. 7 S. 2 der GPSR entbehrlich
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Content of DVGW Guideline G 221
DVGW Guideline G 221 shall ensure the applicability of the DVGW Sets of Rules to the complete gas infrastructure value chain that falls under the legal purview of the Energy Industry Act (EnWG).
G 221 creates a basis for the evaluation and acceptance of all gas infrastructure elements for the operation with hydrogen and gases with hydrogen contents. The requirements defined in this Guideline that are specific to hydrogen, shall be taken into account for planning and operation.
G 221 provides information on bases of evaluation and other sources of insight. This procedure relies on the competency of manufacturers and persons responsible for carrying out testing during the evaluation of material compatibility and of safety measures.
Furthermore, this current Guideline provides information on the operation and maintenance of pipelines and systems for the supply of the general public that are operated with natural-gas-hydrogen mixtures or hydrogen and on the qualifications of persons and companies entrusted with these tasks.
Table of contents
- Foreword
- 1 Scope
- 2 Normative References
- 3 Terms, Symbols, Units, and Abbreviations
- 4 Technical Safety
- 5 Qualification of Involved Persons and Companies
- 6 Manufacturer Certificate and Declaration
- 7 Leaktightness
- 8 Proof of Hydrogen Compatibility
- 9 Safety Data Sheets
- 10 Risk Assessment / Job Safety Analysis
- 11 Equipment and Occupational Health and Safety
- 12 Explosion Safety – Explosion Protection
- 13 Gas Detection Systems
- 14 Fire Protection and Fire Alarm Systems
- 15 Operation and Maintenance
- 16 Essential Changes and Requirements of the German Energy Industry Act (EnWG)(“Energiewirtschaftsgesetzt”; EnWG)
- 17 Construction and Commissioning – Ergänzung der Gasinfrastruktur
- Annex A (informative) – Specific Gas Values of Methane-Hydrogen Mixtures
- Annex B (informative) – Notes on the Responsibilities of Technical Experts, Qualified Persons, and Persons Qualified for Conducting Tests
- Annex C (informative) – Example Manufacturer Certificate / Declaration
- Annex D (informative) – Overview and Additional Notes on Conversion and Increase of Hydrogen Contents in Pipelines and Systems with a Design Pressure Up to and Including 16 bar
- Annex E (informative) – Conversion of Gas Networks in Accordance with the Energy Industry Act
- Annex F (informative) – Topics Regarding the Technical Project Basis for New Construction Projects
- Annex G (informative) – Topics and Questions for the Operator Regarding the Commissioning of New Network Section Under the Purview of the High Pressure Gas Pipeline Ordinance
- Annex H (informative) – Topics Regarding Safety-relevant Design
- Annex I (informative) – Topics for Hydrogen-specific Training and Advanced Training Courses
- Bibliography
Important normative references
German version
Buy DVGW Guideline G 221
You can purchase DVGW Guideline G 221 as PDF file for immediate download.
DVGW Deutscher Verein des Gas- und Wasserfaches e.V. - Technisch-wissenschaftlicher Verein -
Josef-Wirmer-Straße 1–3
53123 Bonn
Sicherheitshinweis entsprechend Art. 9 Abs. 7 S. 2 der GPSR entbehrlich
| Edition: | Download PDF |
|---|---|
| Set of Rules Gas: | Gas storage, Gas systems, Gas billing, Gas management |
| Set of Rules Gas Hydrogen: | Industry, Production |
| Type: | Guideline |