EN ISO 13628-15:2011 PDF

Overview

EN ISO 13628-15:2011 / ISO 13628-15:2011 - published by CEN and ISO - provides industry recommendations for the design, fabrication, installation, operation and maintenance of subsea structures and manifolds used in subsea production systems. The standard covers subsea manifolds and templates employed for pressure control in oil and gas production and subsea injection services. It complements other recognized industry specifications and does not supersede requirements in other standards.

Key topics and technical requirements

The standard addresses practical and technical subjects that inform safe, reliable manifold and template design:

• Scope of equipment: production and injection manifolds, modular/integrated single-satellite and multiwell templates, subsea processing/boosting stations, flowline/riser bases (FRB, ERB), pipeline end manifolds (PLEM), pipeline end terminations (PLET), T- and Y-connections, and subsea isolation valves (SSIV).
• Design fundamentals: system requirements, interface definition, cluster manifold and template functional considerations, and system-level design verification and validation.
• Structural and piping design: load cases, piping layout and stress considerations, structural sizing and foundation design for seabed installations.
• Materials and fabrication: materials selection, welding, non-destructive testing (NDT), forging, corrosion protection, and material traceability for piping systems.
• Manufacturing and testing: fabrication practices, inspection, mechanical and corrosion testing, and overlay welding/buttering where applicable.
• Installation, operation & maintenance: guidance on installation requirements, operational procedures, maintenance planning, ROV/ROT intervention aspects, lifting points and sea-fastening.
• End-of-life: abandonment, decommissioning and post-abandonment considerations.
• Exclusions: the document is not applicable to pipeline and manifold valves, flowline/tie-in connectors, choke valves and production control systems.

Practical applications

ISO 13628-15 is applied to the full lifecycle of subsea manifold and template assets:

• Developing manifold and template designs for new subsea fields.
• Specifying materials, fabrication and inspection criteria for manufacturers and fabricators.
• Preparing installation, lifting and ROV intervention plans for offshore contractors.
• Guiding asset owners on maintenance, modification and decommissioning strategies.
• Supporting procurement documentation, data sheets and contract specifications for subsea equipment.

Who should use this standard

• Subsea design and structural engineers
• Piping and materials engineers
• Fabrication and QA/QC teams
• Offshore installation and operations contractors
• Asset owners, field operators and engineering consultancies
• Regulatory and certification bodies evaluating subsea production systems

Related standards

ISO 13628 is a multi-part series. Relevant companion parts include:

• ISO 13628-1 (general requirements), Part 3 (TFL systems), Part 4 (subsea wellhead and tree), Part 5 (umbilicals), Part 6 (production control systems) and others in the ISO 13628 family. Use EN ISO 13628-15:2011 together with these parts for comprehensive subsea production system coverage.

Keywords: ISO 13628-15, EN ISO 13628-15:2011, subsea manifolds, subsea structures, subsea templates, manifold design, PLEM, PLET, SSIV, subsea production systems.