Draft Details

Designation:HGV 5.2
Contact name:Sara Marxen
Review start date:Nov 19, 2021
Review end date:Jan 18, 2022
Contact email:kelly.yaremko(at)csagroup.org
Draft Scope/Description:

1.1 General

This standard details the mechanical, electrical and safety requirements for newly manufactured Compact Hydrogen Fueling Systems (cHFS) and similar integral hydrogen generation, compression, storage and dispensing systems intended to fuel non-HPIT, on or off-road hydrogen motor vehicles equipped with onboard fuel containers compliant to SAE J2579 or UN Global Technical Regulation No. 13.1.1.


1.2   Application

These requirements apply to integrated or factory matched (modular) hydrogen generating and fueling equipment that:

a) Is intended for fueling of hydrogen powered vehicles only;

b) Is intended for indoor or outdoor installations;

c) Has a single hydrogen generator or hydrogen pipeline source;

d)Produces (or consumes if pipeline is used) hydrogen at a rate equal to or less than 865 SCFH (24.5 Nm3/h);

e) Have a limited hydrogen storage capacity equal to or less than 5,000 SCF (131.4 Nm3) with a pressure not exceeding 875 barg;

f)Has a single compressor with a single or multiple compression stages;

g)Intended to meet the installation fire safety requirements in accordance with NFPA 2;

h)Can be installed in a general purpose and/or hazardous electrical locations;

i)For fill pressures of 350 bar and/or 700 bar only using approved fueling protocol

j)Fuel quality that meets or exceeds requirements in SAE J2719;

k)For devices that fuel at an ambient not below minus 40°C and not exceeding 50°C; and

 l)Single and/or dual hose fueling systems.

A cHFS that also supplies oxygen as a product is excluded from the scope of this Standard.


1.3  Unit of measure

The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.


1.4  Standard conditions

Unless otherwise stated, the standard conditions are as follows: temperature 15 °C and pressure 101 kPa.


1.5  Pressure references

All references to pressure throughout this standard are to be considered gauge pressures, unless otherwise specified.


1.6  Resolution of conflict

In the case of conflict between this Standard and Federal, National, Provincial, State, or local requirements, the authority having jurisdiction requirements take precedence.


1.7  Alternative means

The requirements of this standard are not intended to constrain innovation. When considering fuels, materials, designs or constructions not specifically dealt with in this standard, these alternatives shall be evaluated as to their ability to yield levels of safety and performance equivalent to those prescribed by this standard.


1.8  Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user shall satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non- mandatory) to define their application. requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.



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