ISO 19880-8:2019/Amd 1:2021

INTERNATIONAL ISO
STANDARD 19880-8
First edition
2019-10
AMENDMENT 1
2021-08
Gaseous hydrogen — Fuelling
stations —
Part 8:
Fuel quality control
AMENDMENT 1: Alignment with Grade D
of ISO 14687
Hydrogène gazeux — Stations de remplissage —
Partie 8: Contrôle qualité du carburant
AMENDEMENT 1: Alignement avec le Grade D de l'ISO 14687
Reference number
ISO 19880-8:2019/Amd.1:2021(E)
©
ISO 2021
ISO 19880-8:2019/Amd.1:2021(E)

© ISO 2021
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ii © ISO 2021 – All rights reserved

ISO 19880-8:2019/Amd.1:2021(E)

Foreword
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This document was prepared by Technical Committee TC 197, Hydrogen technologies.
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ISO 19880-8:2019/Amd.1:2021(E)
Gaseous hydrogen — Fuelling stations —
Part 8:
Fuel quality control
AMENDMENT 1: Alignment with Grade D of ISO 14687

Clause 5, first paragraph
Replace the paragraph with the following:
The quality requirements of hydrogen fuel dispensed to PEM fuel cells for road vehicles are listed
in Grade D of ISO 14687.
8.4, first paragraph
Replace the paragraph with the following:
It is necessary to evaluate the possible consequences on a fuel cell vehicle if any impurity exceeds
the threshold value of ISO 14687 Grade D.

8.4, second paragraph
Replace the paragraph with the following:
An estimation of the concentration above the ISO 14687 Grade D threshold values at which the
severity increases (if applicable) is named “Level 1” and is given in column 5 for each impurity
where the “severity class” is not already 4.

Table 4
Replace Table 4 with the following table:
ISO 19880-8:2019/Amd.1:2021(E)

Table 4 — Impact of impurities on fuel cell powertrain
Severity class
Severity class
ISO 14687 (from ISO 14687
(greater than
Impurity Grade D Grade D Level 1 value
Level 1
a
threshold value threshold value
threshold)
to Level 1)
[μmol/mol] [μmol/mol]
b b
Total non-H gases 300 UD UD 4
b b
Helium He 300 UD UD 4
b b
Nitrogen N 300 UD UD 4
b b
Argon Ar 300 UD UD 4
c c
Oxygen O 5 UD UD 4
Carbon dioxide CO 2 1 3 4
d
Carbon monoxide CO 0,2 2-3 1 4
Methane CH 100 1 300 4
Water H O 5 4 N/A 4
Total sulphur H S
0,004 4 N/A 4
compounds basis
Ammonia NH 0,1 4 N/A 4
Total hydrocarbons CH
4 d
2 1-4 N/A 4
except methane basis
d
Formaldehyde HCHO 0,2 2-3 1 4
d
Formic acid HCOOH 0,2 2-3 1 4
Halogens 0,05 4 N/A 4
Maximum particulate
concentration (liquid 1 mg/kg 4 N/A 4
e
and solid)
Key
UD: undetermined
N/A: not applicable
a
The threshold value is according to hydrogen specification of Grade D of ISO 14687.
b
The severity class (from ISO 14687 Grade D threshold value to Level 1) and Level 1 value for this impurity is
undetermined because no specific study has been conducted yet in alignment with the new threshold value. It needs to be
covered in the next edition of this document.
c
The severity class (from ISO 14687 Grade D threshold value to Level 1) and Level 1 value for oxygen are undetermined
because data are lacking to confirm those values. It needs to be covered in the next edition of this document.
d
A higher value is to be considered for risk assessment approach until more specific data is available.
e
Particulates are based upon mass density mg/kg.

A.15 first paragraph
Replace “ISO 14687-2” with “Grade D of ISO 14687” in the second last sentence.

Table B.1
Replace Table B.1 with the following table:
2 © ISO 2021 – All rights reserved

ISO 19880-8:2019/Amd.1:2021(E)

Table B.1 — Probability of occurrence for off-site SMR
Probabil-
Possible causes ity
Impurity Threshold Typical barriers employed in this process
For the source studied with
barriers
μmol/mol
— PSA
Inert gas Present in natural gas and syn-
a
300 UD
N gas PSA malfunction
— Double analysis PSA outlet <100 μmol/mol
Inert gas Only ATR and POx present in O — PSA. Not sized to remove Ar. Ar content may be higher if H comes from ATR, POX or
2 2
a
300 UD
Ar typical 0,6 % in syngas from ATR feeds with high Ar content
Not present in syngas. O is un-
stable in the condition of reform-
O 5 — PSA cannot be used with significant O content for safety reasons 0
2 2
ing and shift reactions. Combines
with H , CO, and CH
2 4
— PSA adsorption strength of MS, activated carbon, silicagel higher for CO than CO. A
CO 2 Present in syngas (%) 0
CO content lower than 10μmol/mol insures a CO content lower than 2 μmol/mol
Normal operation below thresh-
CO 0,2 old. Occasional peaks at μmol/ — Double analysis at the PSA outlet + trip if the CO>1-10 μmol/mol at PSA outlet 4
mol level
— In most cases CO is sizing the PSA, therefore CO<10 μmol/mol ==> C H < 100 μmol/mol
CH 100 Present in syngas at % level 2
depending on users' specification (Europe pipeline 2 μmol/mol).
— PSA adsorbed in alumina and MS adsorption strength higher than CO .
H O 5 Syngas saturated in H O 0
2 2
A CO content lower than 10 μmol/mol insures a H O content lower than 5 μmol/mol.
Key
UD: undetermined
a
The probability of occurrence for this impurity is undetermined because no specific study has been conducted yet.

ISO 19880-8:2019/Amd.1:2021(E)

4 © ISO 2021 – All rights reserved
Table B.1 (continued)
Probabil-
Possible causes ity
Impurity Threshold Typical barriers employed in this process
For the source studied with
barriers
μmol/mol
— Desulphuration upstream reformer (typical values: normal < 10 ppb,
maximum < 20 ppb, guarantee < 50 ppb)
— Typical dilution factor 2,5 (1 mole natural gas produces 2,5 mole H )
— Pre-reformer catalyst poisoning by sulphur is irreversible. Sulphur trapped at this stage.
In case of breakthrough, process condition cannot be achieved
TS 0,004 TS from natural gas — Reformer catalyst poisoning by sulphur is irreversible. Sulphur trapped at this stage. 0
In case of breakthrough, process condition cannot be achieved
— Shift catalyst poisoning by sulphur is irreversible. Sulphur trapped at this stage.
In case of breakthrough, process condition cannot be achieved
— PSA adsorption of H S before CO, CO , species
2 2
— H S adsorption in pipe and vessels. Strong affinity with steel
— PSA adsorption strength of alumina and molecular sieve higher than CO. A CO content
NH 0,1 Traces present in syngas 0
lower than 10μmol/mol insures a NH content lower than 0,1 μmol/mol
Traces of C2+ after reforming — PSA C2 C3, C4, C5+adsorbed by activated carbon layer. A CO content lower than
THC 2 0
reaction 10 μmol/mol insures a THC (C H excluded) content lower than 2 μmol/mol
— PSA. Formaldehyde adsorption strength of alumina and molecular sieve higher than
May be present in syngas. CO. A CO content lower than 10 μmol/mol insures a HCHO content lower than 0,1 μmol/
a
HCHO 0,2 UD
essentially liquid mol. To guarantee 0,01 μmol/mol would require more experience of measuring at
those levels
— PSA. Formic adsorption strength of alumina and molecular sieve higher than CO.
May be present in syngas
HCOOH 0,2 A CO content lower than 10 μmol/mol insures a HCOOH content lower than 0,2 μmol/ 0
essentially liquid
mol
Key
UD: undetermined
a
The probability of occurrence for this impurity is undetermined because no specific study has been conducted yet.

ISO 19880-8:2019/Amd.1:2021(E)

Table B.1 (continued)
Probabil-
Possible causes ity
Impurity Threshold Typical barriers employed in this process
For the source studied with
barriers
μmol/mol
— Any Cl present in natural gas would be stopped by HDS
— Pre-reformer catalyst poisoning by Cl irreversible Cl trapped at this stage. If
breakthrough, process condition cannot be achieved
— Reformer catalyst poisoning by Cl irreversible. Cl trapped at this stage I break through,
Halogens 0,05 Present in natural gas 0
process condition cannot be achieved
— Shift catalyst poisoning by Cl irreversible. Cl trapped at this stage. I break through,
process condition cannot be achieved
— PSA adsorption of Cl before CO, CO , species
Not present in natural gas in N
Europe (<10 μmol/mol). Passes
He 300 0
through the whole process. Dilu-
tion factor 2,5
Key
UD: undetermined
a
The probability of occurrence for this impurity is undetermined because no specific study has been conducted yet.

ISO 19880-8:2019/Amd.1:2021(E)

Table B.2
Replace Table B.2 with the following table:
Table B.2 — Probability of occurrence for pipeline
Typical barriers Probability
Causes possible
Impurity Threshold employed in with
For the item studied
this process barriers
μmol/mol
Air intake if some areas are at negative
Inert gas pressure Inlet pressure PSL trip on
a
300 UD
N From seal gas or purge gas compressors
Wrong purging after maintenance
1 % Ar in the air.
Inert gas 100 μmol/mol would
a
300 No potential UD
Ar mean 1 % air in the pipe
Never been observed
Air intake if some areas are at negative Inlet pressure PSL trip on
O 5 1
pressure compressors
2 μmol/mol of C O would
mean 0,5 % air in the
CO 2 From Air: CO at 400 μmol/mol in the air 0
2 2
pipe
Never been observed
CO 0,2 No potential 0
CH 100 No potential 0
H > 40 bar ==> leak from
H O 5 Wrong drying after pressure hydraulic test H O to H unlikely during 0
2 2 2
operation.
TS 0,004 No potential 0
NH 0,1 No potential 0
THC 2 No potential 0
a
HCHO 0,2 No potential UD
HCOOH 0,2 No potential 0
Halogens 0,05 From cleaning material after maintenance 1
He 300 No potential 0
Key
UD: undetermined
a
The probability of occurrence for this impurity is undetermined because no specific study has been conducted yet. It
needs to be covered in the next edition of this document.
6 © ISO 2021 – All rights reserved

ISO 19880-8:2019/Amd.1:2021(E)

Table B.3
Replace Table B.3 with the following table:
Table B.3 — Probability of occurrence for fuelling station to be source of impurities
Causes possible
Impurity Threshold Existing barriers Probability
For the source studied
μmol/mol
Inert gas N purging operation, air intake during
2 a
300 UD
N normal operation or maintenance
1 % Ar in the air.
100 μmol/mol would
Inert gas Air intake during normal operation or
a
300 mean 1 % air in the UD
Ar maintenance
fuelling station
Never been observed
Air intake during normal operatio
...