Overview
EN ISO 10088:2023 (identical to ISO 10088:2022) specifies requirements for the design, materials, construction, installation and testing of permanently installed fuel systems on small craft. It covers all parts of petrol and diesel fuel systems as installed - from the fuel fill opening to the connection with propulsion or auxiliary engine(s) - for both inboard- and outboard-powered small craft. The European adoption (EN ISO 10088:2023) supersedes the 2017 edition and supports conformity with relevant EU directives for recreational craft.
Key topics and technical requirements
- Scope and applicability: Applies to permanently installed petrol and diesel fuel systems on small craft; fuel tank design/testing is covered separately by ISO 21487:2022.
- Materials and design: Criteria for selecting materials resistant to fuel and compatible with marine environments.
- Construction and installation: Layout, routing, support and protection for fuel pipes, hoses, fittings, vent lines and balancing/return lines.
- Testing requirements: Includes pressure testing (Annex A) and fire resistance testing procedures (Annex C). The 2022 edition updated pressure testing requirements.
- Evaporative emissions: Informative Annex B introduces permeation test limits and test procedures for petrol systems to control evaporative emissions - a reference for future regulatory application.
- Components and accessories: Requirements for fuel filling lines, vent systems, valves, filters, hose fittings and clamps, labelling and marking.
- Referenced standards: Normative references include ISO 7840 (fire‑resistant fuel hoses), ISO 8469 (non‑fire‑resistant fuel hoses), ISO 11105 (ventilation), ISO 21487 (permanent tanks), and others essential to correct application.
Applications and users
EN ISO 10088:2023 is practical for:
- Boatbuilders and small craft manufacturers designing and installing permanently installed fuel systems.
- Marine engineers and naval architects specifying fuel system layout and components for inboard/outboard propulsion.
- Component manufacturers (hoses, fittings, valves, filters) ensuring product compatibility and compliance.
- Surveyors, inspectors and certification bodies assessing conformity with safety and EU recreational craft requirements.
- Regulatory and environmental authorities referencing evaporative emissions guidance for petrol systems.
Related standards
- ISO 21487:2022 - Permanently installed petrol and diesel fuel tanks (tank design & testing).
- ISO 7840:2021 - Fire‑resistant fuel hoses.
- ISO 8469:2021 - Non‑fire‑resistant fuel hoses.
- ISO 11105:2020 - Ventilation of petrol engine/tank compartments.
- EU Directive 2013/53/EU - EN ISO 10088:2023 maps to essential requirements for recreational craft.
EN ISO 10088:2023 is essential reading for anyone involved in the safe, compliant design, installation and testing of fuel systems on small craft, helping reduce fire risk, accidental discharge and evaporative emissions while supporting regulatory conformity.
