Description
The Fish and Wildlife Service is seeking to purchase UV lamp bulbs for the Pendills Creek NFH. The UV-system, an ULTRAQUA UV-system (MR50-350PP Open channel), was installed to purify 4,000 gpm of creek water that feeds the hatchery. The system requires 50 UV bulbs, which have a 16,000-hour life expectancy and must be replaced periodically to maintain efficacy. The lamps should be low-pressure high-output (LPHO) amalgam UVC lamps with a germicidal UVC spectrum (~254 nm) for microbial inactivation. The key characteristics of the lamps include:
• Lamp type: Low-pressure high-output (LPHO) amalgam UVC lamp
• UV spectrum: Germicidal UVC (~254 nm) for microbial inactivation
• Technology: Amalgam mercury discharge lamp, designed for high UV intensity and stable output across temperature ranges
• Nominal power: 350 W
• Operating current/voltage: determined by the specific ballast and reactor design (typically high-current LPHO configuration)
The contractor should provide lamps that meet these specifications to ensure the health and welfare of the fish depend on a clean water supply free of disease-causing microbes.