CAN/CSA C22.2 No. 22-18
Electrical equipment for flammable and combustible fuel dispensers
This Standard applies to the electrical features of power-operated dispensers for petroleum-based fluids (Group IIA fluids), including propane and lighter-than-air fuel such as natural gas, used as fuel in internal combustion engines, where such devices are operated at 750 V and less, in accordance with the Canadian Electrical Code, Part I (CE Code, Part I), and are intended to dispense the fuel directly into the fuel storage tank for the engine.
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to 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.