ISO 7840:2021 PDF

Small craft — Fire-resistant fuel hoses

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Title (English):

ISO 7840:2021

Small craft — Fire-resistant fuel hoses

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 10
Publication date:: February 5, 2021
Edition:: ISO IS 7840 edition 5 version 1
ICS:: 47.080

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Description (English):

This document specifies general requirements and physical tests for fire-resistant hoses for conveying petrol or petrol blended with ethanol, and diesel fuel or diesel fuel blended with FAME, designed for a working pressure not exceeding 0,34 MPa for hoses with inner diameter up to and including 10 mm, and 0,25 MPa for hoses up to 63 mm inner diameter in small craft. It applies to hoses for small craft with permanently installed fuel systems. It does not apply to hoses entirely within the splash well at the stern of the craft connected directly to an outboard engine. Specifications for non-fire-resistant fuel hoses are given in ISO 8469:2021. Specifications for permanently installed fuel systems are given in ISO 10088:2013.

Technical details

Technical committee: ISO/TC 188 - Small craft
SKU: ISO 7840:2021

Abstract

Overview

ISO 7840:2021 - Small craft - Fire-resistant fuel hoses - specifies requirements and physical test methods for fire-resistant fuel hoses used in permanently installed fuel systems on small craft (≤ 24 m hull length). It covers hoses for petrol (including petrol blended with ethanol) and diesel (including diesel blended with FAME) designed for working pressures up to 0.34 MPa (hoses ≤ 10 mm inner diameter) and 0.25 MPa (hoses up to 63 mm inner diameter). The standard excludes hoses entirely inside the splash well connected directly to outboard engines.

Key Topics and Requirements

Scope and applicability: Hoses for permanently installed small‑craft fuel systems; not for splash‑well outboard connections.
Working pressures & sizes: Inner diameter tolerances defined; pressure limits as above.
Preconditioning & test fluids:
- Petrol test fluid: 90% ISO‑1817 liquid C + 10% ethanol.
- Diesel test fluid: 90% ISO‑1817 liquid F + 10% FAME (EN 14214).
- Typical preconditioning: 40 days at 40 °C (28 days permitted for Type 15 low‑permeation hoses).
Physical tests on finished hose (selection):
- Bursting pressure: ≥ 1.4 MPa for ≤10 mm ID; ≥ 1.0 MPa for >10 mm ID.
- Vacuum‑collapse: sphere passage under specified vacuum (80 kPa for d ≤10 mm; 35 kPa for 10

Related standards

Other ISO standards

Overview

Key Topics and Requirements

Scope and applicability: Hoses for permanently installed small‑craft fuel systems; not for splash‑well outboard connections.
Working pressures & sizes: Inner diameter tolerances defined; pressure limits as above.
Preconditioning & test fluids:
- Petrol test fluid: 90% ISO‑1817 liquid C + 10% ethanol.
- Diesel test fluid: 90% ISO‑1817 liquid F + 10% FAME (EN 14214).
- Typical preconditioning: 40 days at 40 °C (28 days permitted for Type 15 low‑permeation hoses).
Physical tests on finished hose (selection):
- Bursting pressure: ≥ 1.4 MPa for ≤10 mm ID; ≥ 1.0 MPa for >10 mm ID.
- Vacuum‑collapse: sphere passage under specified vacuum (80 kPa for d ≤10 mm; 35 kPa for 10

ISO 7840:2021 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

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Abstract

Overview

Key Topics and Requirements

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