ISO/DIS 13590 Small craft -- Personal watercraft(10)

Author: Add date: 07/24/2007 Publishing date: 07/24/2007 Hits: 9

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or hose fitting.
5.11 Metallic fuel line
5.11.1 Each metallic fuel line connecting the fuel tank with the fuel inlet connection on the engine shall not be
made of carbon steel. Except for corrugated flexible fuel lines, each metallic fuel line shall have a minimum wall
thickness of 0,74 mm.
5.11.2 Each metallic fuel line that is mounted to the watercraft structure shall be connected to the engine by a
flexible fuel line and shall be attached to the personal watercraft's structure within 100 mm of its connections to a
flexible fuel line.
5.12 Plugs and fittings
A fuel system shall not have a fitting for draining fuel.
Exception: a plug used to remove fuel and/or water within the fuel filter or strainer shall have a tapered pipe
thread or be a screw type fitting with a locking device other than a split lock washer.
5.13 Vent and fuel distribution hoses and connections
5.13.1 Each hose shall meet the requirements of 5.16.
5.13.2 Each hose shall be secured by a method that prevents leaks and prevents the hose from becoming
disconnected.
5.14 Grounding (Earthing)
Each metallic component of the fuel fill system and fuel tank that is in contact with fuel shall be statically grounded
(earthed) so that resistance between the ground (earth) and each metallic component of the fuel fill system and the
fuel tank is less than 100 ohm.
5.15 Fire test
The fuel system in a representative personal watercraft equipped with its complete engine and fuel system shall not
leak when tested using the following procedure.
5.15.1 Fill the fuel tank to one-fourth total capacity.
5.15.2 Close all bilge drains that might allow the fuel to flow out of the engine compartment.
5.15.3 Confirm that the fuel system meets the requirements of 5.1.3.
5.15.4 Pour an amount of heptane over the engine sufficient to burn for at least 2,5 min, but no longer than 5 min.
5.15.5 Ignite the heptane.
5.15.6 Observe burning heptane after ignition.
5.15.7 Close engine compartment
5.15.8 Wait 2,5 min.
5.15.9 Open engine compartment and extinguish any remaining flame with carbon dioxide (CO2).
5.15.10 Pressurize the fuel system to 2 kPa with air or inert gas and check for leaks.
ISO/DIS 13590:2001
8 © ISO 2001 – All rights reserved
5.16 Fuel hose specifications
The fuel hose shall either meet the performance specifications in ISO 7840 or ISO 8469, or meet the following hose
specifications, which apply to two types of fuel hose for personal watercraft. One type is a reinforced hose with a
cover and the other is a hose without a cover.
5.16.1 Tensile strength and elongation
A test for tensile strength and elongation shall be made, and specimens shall meet the conditions given in table 1.
Table 1 - Tensile strength and elongation
Hose with cover Hose without cover
Tube material Cover material Hose material
Original strength
Original elongation
8 Mpa
200 % minimum
7 Mpa
200 % minimum
8 MPa
200 % minimum
5.16.2 Dry heat resistance
After heat ageing in accordance with ASTM D 573 for 70 h at 100 °C ± 2 °C specimens taken from the hose shall

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