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Hydrogen fuel gas rooms shall be provided with a ventilation system designed to maintain the room at a negative pressure in relation to surrounding rooms and spaces.

Related Code Sections

490.73 Equipment for General Use, Pressure and Temperature Limit Control
Each boiler shall be equipped with a means to limit the maximum temperature, pressure, or both, by directly or indirectly interrupting all current ...
490.73 Equipment for General Use, Pressure and Temperature Limit Control
Each boiler shall be equipped with a means to limit the maximum temperature, pressure, or both, by directly or indirectly interrupting all current ...