FUEL CELL and Water Electrolysis Technologies– Part 2-100: Fuel cell modules and water electrolysis modules – Safety

Note: The title, standard designation number and scope for this NOI (originally published on January 31, 2023) was updated by the responsible SDO on January 23, 2024.

Note: The standard sub-type, scope and project need have been updated for this NOI (originally published on January 31, 2023) were updated by the responsible SDO on May 30, 2023.

This document provides safety related requirements for construction, operation under normal and abnormal conditions and the testing of fuel cell and water electrolysis modules. It applies to modules with the following electrolyte chemistry:

• alkaline, for e.g. potassium hydroxide;

• polymer electrolyte (including direct methanol fuel cells), for e. g. PEM, AEM;

• acidic, for e.g. phosphoric acid;

• molten carbonate;

• solid oxide;

• aqueous solution of salts.

Fuel cell modules or water electrolysis modules can be provided with or without an enclosure and can be operated at significant pressurization levels or close to ambient pressure.

These requirements can be superseded by other standards for equipment containing fuel cell modules or water electrolysis modules as required for particular applications.

This document does not cover fuel cell road vehicle applications.

This document is not intended to limit or inhibit technological advancement. An appliance employing materials or having forms of construction differing from those detailed in the requirements of this document can be examined and tested according to the purpose of these requirements and, if found to be substantially equivalent, can be considered to comply with this document.

The modules are components of final product or system. These products or systems require evaluation according to appropriate end-product safety requirements.

This document covers only up to the DC output of the fuel cell module.

This document covers only up to the DC input of the water electrolysis module.

This document does not apply to peripheral devices outside the module as illustrated in Figure 1 and Figure 1A.

This document does not cover the storage and delivery of fuel and oxidant to the fuel cell module.

This document does not cover the storage and delivery of the products of the water electrolysis module.

This standard covers the above-noted products that are intended to be installed or used in accordance with:

• CSA C22.1, Canadian Electrical code (CEC) Part I,
• NFPA 70, National Electrical Code (NEC)