| (a) An ultraviolet (UV) disinfection system must include
at least two banks positioned in series in a disinfection channel.
(b) A UV light disinfection system must meet the dosage
requirements determined in §217.295 of this title (relating to
Ultraviolet Light Disinfection Dosage and System Sizing) under all
conditions.
(c) An owner must maintain an inventory of replacement
equipment, including lamps, ballasts, quartz sleeves, banks, and modules,
to replace equipment during emergency repairs and scheduled maintenance.
The minimum inventory of replacement lamps, ballasts, and quartz sleeves
is described in §217.298(b) of this title (relating to Ultraviolet
Light Disinfection System Cleaning and Maintenance).
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