ISO 16147:2020 pdf download – Small craft — Inboard diesel engines — Engine-mounted fuel, oil and electrical components.
4 General 4.1 All material and components shall be suitable for intended use and capable of operation within an ambient temperature range of –10 °C to +80 °C without failure or leakage, and be capable of being stored without operation within an ambient temperature range of −30 °C to +80 °C without failure or leakage. 4.2 Engine-mounted fuel and electrical components and accessories that require frequent inspection and/or servicing shall be accessible. 4.3 Exposed operating or hot engine-mounted components that could cause personal injury shall be effectively shielded. 4.4 Installation of engine-mounted diesel fuel and electrical components shall take account of the risk and spread of fire. Special attention shall be paid to hot areas of engines. Routing of electrical wiring, in particular, shall be located away from heat sources and hot areas. 5 Engine fuel and oil system and components 5.1 General 5.1.1 Engine-mounted fuel and lubricating systems shall be leak free, such that there is no dripping or wetting of surface areas at the interface of connecting components and pipe joints due to misting atomization, or liquid from fuel or lubrication under normal operation. 5.1.2 All materials used in fuel systems shall be resistant to deterioration by the diesel fuel, including bio diesel that contains FAME and to other liquids or compounds with which they may come into contact under normal operating conditions, e.g. grease, lubricating oil, bilge solvents and sea water. 5.1.3 All sealing material, such as gaskets, o-rings, joint-rings, etc. shall be of the non-wicking, i.e. non- fuel-absorbent type.
5.1.4 Fuel and oil filters, flexible hoses including fittings and terminations shall, individually or as installed, withstand a 2,5 min fire test as described in ISO 10088:2013, Annex B, or ISO 7840:2013, Annex A. If the component is being tested as installed on an engine, the pan shall be large enough to extend beyond the vertical projection of the perimeter of the engine. NOTE A permanently installed shielding of fuel return hoses, including their fittings and terminations, is accepted as protection against fire. 5.2 High-pressure fuel pipes 5.2.1 High-pressure fuel pipes shall be suitable for the pressure and pressure impulses in the system. 5.2.2 High-pressure fuel pipes shall be secured to prevent vibrations leading to pipe fracture. 5.3 Low-pressure fuel lines 5.3.1 Flexible hoses shall meet the requirements of ISO 7840:2013 and be secured by a metal hose clamp or permanently installed end fittings, such as a swaged sleeve, threaded insert or connections with compression ring sealings. 5.3.2 Hose connections having a nominal diameter of more than 25 mm shall have two hose clamps. The spud shall be at least 35 mm long to provide space for the clamps. 5.3.3 All low-pressure fuel lines shall be secured into position so as to prevent damage due to excessive vibration leading to pipe fracture. All flexible hoses shall be located away from non-insulated components with a surface temperature above 200 °C, but remain accessible for inspection and maintenance. 5.4? Fuel? and? lubrication? oil? filters Fuel and lubricating oil filters shall — be independently supported to avoid stress on pipe connections, — be readily accessible, and — not be mounted above turbochargers or uncooled exhaust gas manifolds.