Sample interview questions: Can you explain the process of inspecting plumbing systems for the prevention of Legionella growth in recreational water facilities?
Sample answer:
Inspection Process for Legionella Prevention in Recreational Water Facilities
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Visual Inspection:
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Identify potential sources of Legionella growth, such as stagnant water, low-flow areas, and cooling towers.
- Check for leaks, corrosion, or damaged fixtures that can create biofilm buildup.
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Inspect water distribution systems for temperature control, including hot water heaters, pipes, and faucets.
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Temperature Measurement:
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Verify that hot water systems maintain temperatures above 140°F (60°C) at the point of use.
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Ensure cold water temperatures are below 68°F (20°C) throughout the system.
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Water Sampling and Testing:
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Collect water samples from multiple points in the system, including high-risk areas such as sinks, showers, and whirlpools.
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Test water samples for the presence of Legionella bacteria using approved methods (e.g., culture, PCR, antigen detection).
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Biofilm Measurement:
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Assess the presence and extent of biofilm, a protective layer where Legionella can thrive.
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Use techniques such as adenosine triphosphate (ATP) swabs or biofilm monitoring devices.
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Review of Maintenance Records: Read full answer
Source: https://hireabo.com/job/12_0_7/Plumbing%20Inspector