Draft Details

1 Inclusions

This Document establishes requirements for:

a)   hydrogen fuel cell powered rolling stock, including retrofit and new-build units;

b)   the onboard compressed hydrogen gas fuel storage and delivery system from the refuelling receptacle to the fuel cell power system; and

c)   the proton exchange membrane (PEM) fuel cell power systems.

Notes:

1)   Rolling stock may have additional power source(s). For onboard lithium-ion batteries, see CSA TS-602.

2)   This document is limited to the scope indicated above and it is assumed that integrators apply other standards and regulations as needed, for example AAR MSRP-M and AAR M-1004 (for freight applications) or APTA PR-PS-WP-007 (for passenger applications), etc.

1.2 Exclusions          

This Document does not:

a)   include requirements for hydrogen internal combustion engines;

b)   include requirements for fuel cell power system technologies other than PEM;

c)   include requirements for liquid hydrogen or cryo-compressed hydrogen fuel systems;

d)   apply to wayside or mobile refuelling equipment;

e)   address systems related to interchange to the extent that they are covered by AAR specifications; and

f)    address hazards, risks, or requirements for components and systems that are typical and common to diesel-powered rolling stock.

1.3 Terminology

In this Document, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Document; “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 Document.

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.

1.4 Units of measure

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