Overview - EN ISO 13628-1:2025 (Subsea production systems)
EN ISO 13628-1:2025 (adopted by CEN) provides general requirements and recommendations for the design and operation of subsea production systems (SPS) used in oil and gas industries, including low‑carbon energy applications. It covers the full lifecycle - from concept development, through design, manufacturing, installation, commissioning and operation, to decommissioning and abandonment. The document is the European adoption of ISO 13628-1:2025 and supersedes earlier editions (EN ISO 13628-1:2005 and its amendment).
Key topics and technical requirements
This standard addresses high‑level technical and engineering topics relevant to subsea systems, including:
- Systems engineering and lifecycle management
- Systems engineering processes, production assurance and reliability management (see Annex A).
- Design basis and safety strategy
- Safety‑by‑design principles, safety strategy and barrier philosophies for subsea installations.
- Barrier and isolation considerations
- Barrier requirements and subsea isolation philosophies for wells and production systems.
- Materials and structural analysis
- Material selection, corrosion considerations and structural analysis for wellheads, trees and subsea structures.
- Equipment design
- Guidance for pumps, piping, valves, lifting components, dropped‑object protection and design for intervention.
- Manufacture, testing and installation
- Requirements for manufacture, assembly, inspection/testing (including test plans), transportation, load‑out and installation practices.
- Commissioning, operations and integrity management
- Systems completion, condition monitoring, maintenance, reliability data collection and production management.
- Well intervention and decommissioning
- Operational guidance for interventions and end‑of‑life decommissioning strategies.
- Technology management
- Technology development, qualification and obsolescence management.
Note: flexible pipe standards are covered in the API 17 series; EN ISO 13628-1:2025 does not generally cover flowlines/pipelines or production/injection risers, though these are logical parts of a complete SPS.
Practical applications - who uses this standard
EN ISO 13628-1:2025 is used by a wide range of professionals involved in subsea projects:
- Subsea and offshore engineers (design, structural, materials)
- Project and systems engineers responsible for SPS lifecycle
- Asset owners/operators and integrity management teams
- Equipment manufacturers, fabricators and test houses
- Installation contractors and commissioning teams
- Regulators and certification bodies assessing compliance and safety
- Procurement teams referencing standards in contracts and specifications
This standard helps ensure coherent systems engineering, safer designs, consistent testing/commissioning practices and effective operations and maintenance of subsea production systems.
Related standards
- ISO/EN 13628 series (other parts addressing specific subsea hardware and systems)
- API 17 series (flexible pipe and subsea flowline guidance)
- Relevant material, welding and pressure‑equipment standards used in subsea design and manufacturing
Keywords: EN ISO 13628-1:2025, subsea production systems, design and operation, systems engineering, barrier philosophy, integrity management, subsea commissioning, oil and gas, low carbon energy.
