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Annex V

United Kingdom

Original text. Later amendments are not shown.

Annex IX to Regulation (EU) 2017/1151 is amended as follows:

  1. (1)

    in Section A, point 3. is replaced by the following:

    ‘3.

    Technical data on fuels for testing fuel cell vehicles

    Type: Hydrogen for fuel cell vehicles

    The hydrogen fuel index is determined by subtracting the “total non-hydrogen gases” in this table, expressed in mole per cent, from 100 mole per cent.

    Total hydrocarbons include oxygenated organic species. Total hydrocarbons shall be measured on a carbon basis (μmolC/mol). Total hydrocarbons may exceed 2 μmol/mol due only to the presence of methane, in which case the summation of methane, nitrogen and argon shall not exceed 100 μmol/mol.

    As a minimum, total sulphur compounds include H2S, COS, CS2 and mercaptans, which are typically found in natural gas.

    Total halogenated compounds include, for example, hydrogen bromide (HBr), hydrogen chloride (HCl), chlorine (Cl2), and organic halides (R-X).

    Test method shall be documented.

    For the constituents that are additive, such as total hydrocarbons and total sulfur compounds, the sum of the constituents are to be less than or equal to the acceptable limit.

    CharacteristicsUnitsLimitsTest Method
    minimummaximum
    Hydrogen fuel indexf1 % mole99,97
    Total non-hydrogen gasesμmol/mol300
    Maximum concentration of individual contaminants
    Water (H2O)μmol/mol5 f2
    Total hydrocarbonsf3 (Methane basis)μmol/mol2
    Oxygen (O2)μmol/mol5
    Helium (He)μmol/mol300
    Total Nitrogen (N2) and Argon (Ar) μmol/mol100
    Carbon dioxide (CO2)μmol/mol2
    Carbon monoxide (CO)μmol/mol0,2
    Total sulfur compoundsf4 (H2S basis)μmol/mol0,004
    Formaldehyde (HCHO)μmol/mol0,01
    Formic acid (HCOOH)μmol/mol0,2
    Ammonia (NH3)μmol/mol0,1

    Total halogenated compoundsf5

    (Halogenate ion basis)

    μmol/mol0,05

    ’

Annotations

Footnotes

f1

The hydrogen fuel index is determined by subtracting the “total non-hydrogen gases” in this table, expressed in mole per cent, from 100 mole per cent.

f2

Test method shall be documented.

f3

Total hydrocarbons include oxygenated organic species. Total hydrocarbons shall be measured on a carbon basis (μmolC/mol). Total hydrocarbons may exceed 2 μmol/mol due only to the presence of methane, in which case the summation of methane, nitrogen and argon shall not exceed 100 μmol/mol.

f4

As a minimum, total sulphur compounds include H2S, COS, CS2 and mercaptans, which are typically found in natural gas.

f5

Total halogenated compounds include, for example, hydrogen bromide (HBr), hydrogen chloride (HCl), chlorine (Cl2), and organic halides (R-X).