Annex V
United Kingdom
Annex IX to Regulation (EU) 2017/1151 is amended as follows:
- (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.
Characteristics Units Limits Test Method minimum maximum Hydrogen fuel indexf1 % mole 99,97 Total non-hydrogen gases μmol/mol 300 Maximum concentration of individual contaminants Water (H2O) μmol/mol 5 f2 Total hydrocarbonsf3 (Methane basis) μmol/mol 2 Oxygen (O2) μmol/mol 5 Helium (He) μmol/mol 300 Total Nitrogen (N2) and Argon (Ar) μmol/mol 100 Carbon dioxide (CO2) μmol/mol 2 Carbon monoxide (CO) μmol/mol 0,2 Total sulfur compoundsf4 (H2S basis) μmol/mol 0,004 Formaldehyde (HCHO) μmol/mol 0,01 Formic acid (HCOOH) μmol/mol 0,2 Ammonia (NH3) μmol/mol 0,1 Total halogenated compoundsf5
(Halogenate ion basis)
μmol/mol 0,05 ’
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).