Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
4 Quality
4.1 Quality management
4.2 Competence
5 Gas characteristics
5.1 Gas quality and family
5.2 Odorization
5.3 Toxicidity and lack of oxygen
6 Materials
7 Design
7.1 General
7.2 Basic design data
7.3 Pressure relationships
7.4 Pipeline sections
7.5 Service lines
7.6 Pressure regulating stations and
installations
7.7 Measuring stations
7.8 Valves
7.9 Corrosion protection
8 Limiting environmental impact
9 Transportation, storage and handling of materials
10 Construction
10.1 General
10.2 Connections to existing systems
11 Pressure tasting
12 Commissioning and decommissioning
13 Operation, survey and maintenance
13.1 General
13.2 Record system and traceability
13.3 Operation centres
13.4 Pipeline operator's works
13.5 Third party works
13.6 Leakage surveys and public reported gas
escapes
13.7 Repair and maintenance
13.8 Emergency record system
14 Emergency plan or intervention plan