Sample interview questions: How do you assess and identify potential backflow risks in plumbing systems?
Sample answer:
Assessing and Identifying Potential Backflow Risks
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Inspect the water distribution system: Examine the location and design of water sources, such as municipal connections, wells, and cisterns. Identify potential sources of contamination, including cross-connections (connections between potable and non-potable water supplies) and backflow devices (e.g., hose bibbs or irrigation systems).
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Review plumbing plans and inspection reports: Obtain and review detailed plumbing plans to identify the layout, size, and materials of piping systems. Examine previous inspection reports to gather information on existing or potential backflow risks.
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Conduct a site survey: Perform a thorough visual inspection of the property to identify potential hazards, such as:
- Open or exposed plumbing fixtures connected to non-potable sources
- Submersible pumps or pitless adapters without backflow protection
- Fire sprinkler systems with cross-connections to domestic water supplies
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Analyze water pressure differentials: Measure water pr… Read full answer
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