G 450 Guideline 09/2017
Pigging of Gas Pipelines ++ PDF file ++
- Herausgeber/Verlag: DVGW
- Format: 26 pages
- Material: available as PDF only
- Ausgabe: 2nd edition 2017
- Hinweis: German version G 450
- Verkaufseinheit: 1
- Mindestabnahme: 1
- Artikel-Nr.: 511439
62,03 €*
This Guideline G 450 shall be used together with DVGW Standard G 466‑1. It intends to promote a standardised approach to pigging gas pipelines that operate under positive operating pressure and contain a product. This Guideline is based on the long‑standing, tried and trusted safety philosophy and experience of the German gas sector.
Foreword
1 Scope
2 Normative references
3 Terms, symbols, units and abbreviations
3.1 Receptacle
3.2 Service provider
3.3 Waste disposal contractor
3.4 Gauge pigging
3.5 Geometry pigging
3.6 Inspection pigging
3.7 Caliper pig
3.8 Caliper pigging
3.9 Coordinator
3.10 Mapping pig run
3.11 Markers
3.12 Pig
3.13 Pigging schedule/pigging report
3.14 Pigging section
3.15 Pig signaller
3.16 Pig trap
3.17 End closure
3.18 Pig transmitter
3.19 Pig insertion and removal equipment
3.20 Pigging programme
3.21 Cleaning pig run
4 Pig types and criteria for use
4.1 Pig types
4.2 Pigs and pigging service providers - requirements
5 Preparation of pigging procedures
5.1 Piggability test
5.1.1 Geometry test of the pipeline to be pigged on the basis of the pipeline documentation
5.1.2 Defining a pigging programme and selecting a pig
5.1.3 Pipeline piggability
5.2 Preparing a pigging schedule
5.3 Preparing a risk assessment of pig runs
5.4 Preparing the work on site
5.4.1 Setting up pig traps
5.4.2 Disposing of solid and liquid waste from pipeline pigging operations
5.4.3 Placing markers prior to inspection pigging
5.5 Defining responsibilities
5.6 Instruction
6 Pigging process
6.1 General
6.2 Monitoring the pig run
6.3 Deviations from the pigging schedule
6.4 Proof of effectiveness
Annex A (informative) ? Data of the pipeline to be pigged (sample form)
Annex B (informative) ? Pigging schedule/pigging report (sample form)
Annex C (informative) ? Risk assessment (sample form)
Annex D (informative) ? Pig tracking (sample form)
Annex E (informative) ? Marker positions for inspection pigging (sample form)
Annex F (informative) ? Responsibilities during pigging operations
Annex G (informative) ? Safety instructions and requirements (sample form)
1 Scope
2 Normative references
3 Terms, symbols, units and abbreviations
3.1 Receptacle
3.2 Service provider
3.3 Waste disposal contractor
3.4 Gauge pigging
3.5 Geometry pigging
3.6 Inspection pigging
3.7 Caliper pig
3.8 Caliper pigging
3.9 Coordinator
3.10 Mapping pig run
3.11 Markers
3.12 Pig
3.13 Pigging schedule/pigging report
3.14 Pigging section
3.15 Pig signaller
3.16 Pig trap
3.17 End closure
3.18 Pig transmitter
3.19 Pig insertion and removal equipment
3.20 Pigging programme
3.21 Cleaning pig run
4 Pig types and criteria for use
4.1 Pig types
4.2 Pigs and pigging service providers - requirements
5 Preparation of pigging procedures
5.1 Piggability test
5.1.1 Geometry test of the pipeline to be pigged on the basis of the pipeline documentation
5.1.2 Defining a pigging programme and selecting a pig
5.1.3 Pipeline piggability
5.2 Preparing a pigging schedule
5.3 Preparing a risk assessment of pig runs
5.4 Preparing the work on site
5.4.1 Setting up pig traps
5.4.2 Disposing of solid and liquid waste from pipeline pigging operations
5.4.3 Placing markers prior to inspection pigging
5.5 Defining responsibilities
5.6 Instruction
6 Pigging process
6.1 General
6.2 Monitoring the pig run
6.3 Deviations from the pigging schedule
6.4 Proof of effectiveness
Annex A (informative) ? Data of the pipeline to be pigged (sample form)
Annex B (informative) ? Pigging schedule/pigging report (sample form)
Annex C (informative) ? Risk assessment (sample form)
Annex D (informative) ? Pig tracking (sample form)
Annex E (informative) ? Marker positions for inspection pigging (sample form)
Annex F (informative) ? Responsibilities during pigging operations
Annex G (informative) ? Safety instructions and requirements (sample form)