AS ISO 21507:2021 pdf free

09-06-2021 comment

AS ISO 21507:2021 pdf free.Earth-moving machinery一Performance requirements for non-metallic fuel tanks.
4 Requirements
4.1 Protection
The tank shall be protected. by parts of the machine frame or the outer structure, from contact with obstacles under or around the machine. Alternatively, any unprotected tank sections shall pass the impact testing specified in £1.5.
Tubing or piping connected to the tank shall be protected by shielding such as braided or spiral sleeves, specific guards, or guarding by location.
4.2 Corrosion resistance
The tank installation shall be designed, constructed and installed to resist any corrosion from both the internal (within the fuel system) and external environment. Where necessary, protection (e.g. plating of metal parts) should be provided.
4.3 Installation
The tank installation shall accommodate the twisting and bending movements and vibrations of the machine. The connections of flexible pipes with rigid parts of the tank installation shall be so designed and constructed as to maintain a sealed connection under these dynamic conditions.
The tank shall be securely fixed. The installation arrangement or construction shall ensure that any fuel leaking from the tank, its filler hole or its connections shall not collect into pools without a passive means for drainage.
If the tank will contain gasoline, the tank installation shall be designed and installed in the machine such that any ignition hazard due to static electricity is avoided.
If the filler hole is located on the side of the machine, the filler cap shall not, when closed, project beyond the external envelope of the machine.
The non-metallic fuel tank should be located on a machine so that it is neither in direct contact with, nor within 20 mm of, the surface of a machine ignition temperature area. lithe tank is located within 20 mm of the surface of a machine ignition temperature area, then some protection for the tank shall be provided. Non-metallic tank material that has temperature resistance greater than the maximum surface temperatures of the machine ignition temperature area satisfies this requirement.
4.4 Location restriction
Tanks shall not form a wall of an operator’s cab.
On machines without an operator’s cab, tank surfaces or portions of the tank adjacent to the operator station shall be located outside the minimum operator space envelope as it is defined in ISO 3411.
The filler hole shall be located outside of the operator station.
4.5 Performance
Any fuel that can leak when the tank is being filled shall be directed away or shielded from any machine ignition temperature area.AS ISO 21507 pdf download.

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