scope:

This Standard establishes minimum requirements for the material, design, manufacture, and testing of newly produced compressed hydrogen gas fuel system components and serially produced, refillable Type HPIT 1 containers intended only for the storage of compressed hydrogen gas installed in powered industrial truck applications or other heavy duty industrial applications. The following are components covered under this Standard:

a) check valve;

b) manual valve;

c) manual container valve;

d) automatic valve;

e) pressure sensors and pressure gauges;

f) pressure regulator;

g) pressure relief device;

h) excess flow valve;

i) rigid fuel line;

j) flexible fuel line;

k) filter;

l) fittings;

m) discharge line closures; and

n) containers - HPIT Types 1, 2, 3, and 4.

The construction of compressed hydrogen gas fuel system components and containers is covered under Clause 4.

The performance of compressed hydrogen gas fuel system components and containers is covered under Clause 6.

This Standard applies to containers permanently attached to the powered industrial truck and intended only for on-board refueling from a dispenser.

This Standard does not apply to the following:

a) stationary gas engines;

b) containers that can be removed from the powered industrial truck, refilled, and reattached; and

c) reseating or resealing pressure relief devices.

This Standard applies to devices that have a service pressure of either 25 MPa (3 636 psi), 35 MPa (5 076 psi), 50 MPa (7 251 psi), or 70 MPa (10 153 psi). Table 1 defines the maximum fill pressure, dispenser pressure relief valve set point, and proof pressure for each of the specified service pressures.

It is recognized that other components and containers not specifically covered herein can be examined to meet the criteria of this Standard and tested according to the appropriate functional needs. Other regulations, standards, or codes may permit or require the use of components certified to comply with this Standard. Additional service conditions or requirements beyond the scope of this document are the responsibility of those standards development organizations or the authority having jurisdiction.

All references to "psi" throughout this Standard are to be considered gauge pressures, unless otherwise specified.

In the case of conflict between this Standard and Federal, Provincial, State, or local requirements, the government requirements take precedence.

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.

This Standard contains SI (Metric) units corresponding to the yard/pound quantities, the purpose being to allow the standard to be used in SI (Metric) units. IEEE/ASTM SI 10 or ISO 80000-1 is used as a guide in making metric conversion from yard/pound quantities. If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for a measurement and a corresponding value in other units are both specified as a quoted marking requirement, the first stated unit, or both are to be provided.