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Standards Development
The scope includes:
Pipeline configurations: Thermoset (rigid) and thermoplastic (flexible) polymer and composite pipes, polymer and composite liners in metallic pipelines (pipe in pipe), and metal reinforced polymer pipes.
Operating envelope: assessment of feasible pressure, temperature, and diameter ranges relevant to CO₂ transport, without imposing predefined limits.
Material behaviour in CO₂ service:
- Chemical compatibility with CO₂ streams and impurities
- Corrosion resistance or rates of metallic reinforcements and metallic components
- Physical effect of CO₂ streams and impurities
- Rapid gas decompression resistance of materials and rapid gas decompression resistance, aka blow-down, of the pipe system
- Low temperature and thermal shock resistance - CO2 permeability of the pipe system
- Resistance of pipe systems to rapid crack propagation
Identification of failure modes unique or critical to CO₂ with impurities and whether and how these are addressed in existing standards.
Applicability and suitability of existing standards: review of national, CEN, ISO and other relevant standards for polymer and composite pipelines, assessing their suitability for specific CO₂ service conditions without replicating existing requirements.
Current practice and use cases: documentation of existing deployments of polymer/composite systems for CO₂ transport and evaluation of potential applications for European CCS infrastructure.
Integrity management: inspection, testing, monitoring, and predictive modelling approaches relevant and specific to polymer/composite pipelines in CO₂ service. Also including, integrity assessment, remedial actions, repair and modification, again focussed on specific methods and constraints for maintaining polymer/composite systems used in CO₂ transport.
The scope excludes :
- Health, safety and environmental aspects
- Quantitative lifecycle cost comparison
- Coatings for metallic pipelines
- Valves
A. Standards Gap
Existing CO₂ transport standards do not address polymer and composite pipes for, anthropogenic, CO₂ with impurities. A gap analysis is required to identify missing qualification requirements without duplicating existing ISO/CEN standards.
B. Technical and Economic Rationale
Polymer and composite pipes may allow broader CO₂ composition ranges due to differences in chemical resistance. These materials can offer cost advantages through high chemical resistance, lower installation costs, and reduced maintenance.
C. Application Definition
The scope of the proposed work must establish where, and under what operating conditions, polymer and composite pipes are suitable for transporting CO₂ streams with impurities across gaseous, dense-phase, and supercritical regimes.
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