BS EN 17278:2021 pdf free download – Natural gas vehicles一Vehicle fuelling appliances.
7) Barriers or other mechanisms to protect the VFA from collision damage shall be provided, if the VFA is exposed to the risk of vehicle collision.
8) The VFA shall shut down safely in the event of a loss of power.
9) The VFA shall have means of ensuring that oil carryover from the compressor, dust, water and other contaminants in the gas stream meet the requirements of EN 16723-2.
10) The specific climatic conditions of the site location and expected minimum and maximum temperatures during operation shall be taken into account.
11) Means ensuring a maximum temperature compensated fuelling pressure of 200 bar at 15°C shall be provided.
All VFA components, piping and fittings shall be manufactured, marked and assembled in a manner suitable for their intended use, applying the principles of sound engineering practice, to be suitable for the full range of pressures, temperatures, weather conditions and loadings which can occur under normal and fault conditions.
6.3 Materials
All materials shall be:
a) suitable for their intended application;
b) resistant to the rated temperature extremes, corrosion, moisture, natural gas or biomethane and aging.
The manufacturer of the VFA shall ensure that all materials used for the construction of the components conform to their specifications. The manufacturer of the VFA shall document the compliance with the material specifications by using materials which either comply with harmonized standards or are covered by European approval of pressure equipment materials.
6.4 Internal systems and components of VFA
6.4.1 Fuel delivery system
6.4.1.1 General
The fuel delivery system is intended to provide NGV fuelling up to a maximum temperature compensated fuelling pressure 200 bar at 15°C. The fuel delivery system shall contain a fuelling hose with fuelling nozzle and break-away device.
6.4.1.2 Fuelling hose
The following requirements apply to a fuelling hose:
1) The fuelling hose shall be designed and manufactured for CNG service. The fuelling hose shall be permanently marked accordingly.
2) The fuelling hose shall be suitable for use at a temperature range of—40 °C to 65 °C.
3) The MAWP shall be permanently marked on the fuelling hose by the manufacturer.
4) The fuelling hose shall be subject to the proper testing. Testing shall be done in accordance with applicable regulations.
5) The fuelling hose materials shall be resistant to the degrading effects of common automotive fluids with which they can come in contact.
NOTE 1 Fuelling hose materials that comply with oxygen ageing and non-metallic material immersion of UN/ECE R 110 is considered to conform to this requirement.
6) The fuelling hose shall be constructed in such a manner that permeation or leakage from the inner tube does not expand or damage the outer cover, braids and inner plies.
NOTE 2 A fuelling hose that complies with the permeability test of UN/ECE R 110 is considered to conform to this requirement.
7) The fuelling hose materials shall be UV resistant. They shall be tested in accordance with
EN ISO 30013.
8) The fuelling hose outer covers shall be constructed of non-electrically conductive materials (i.e. metallic braids shall not be exposed between fittings ends).
9) The fuelling hose connections shall withstand a force in a linear direction greater than the breakaway force. End fittings used on a fuelling hose shall be permanently attached with pull-off force at least 1340 N.
10) The fuelling hose fittings shall be provided with a standard wrench flat grip.
11) The fuelling hose fittings shall be made of corrosion resistant metal or provided with corrosion resistant plating.