Sample interview questions: What is the process you follow to test and certify backflow prevention devices?
Sample answer:
Testing and Certification Process for Backflow Prevention Devices
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Pre-Test Inspection:
- Visually inspect the device for any visible damage or defects.
- Check for proper installation and connections.
- Confirm that all components are functioning correctly.
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Cross-Connection Test with Downstream Pressure:
- Isolate the downstream side of the device and apply pressure.
- Check for any leakage or backflow from the contaminated source into the potable water system.
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Backpressure Test with Upstream Pressure:
- Isolate the upstream side of the device and apply pressure.
- Check for any leakage or backflow from the potable water system into the contaminated source.
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Field Test:
- Utilize a specialized test kit or gauges to measure flow rates and pressures.
- Verify that the device meets the manufacturer’s specifications and applicable regulations.
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Certification:
Source: https://hireabo.com/job/12_0_11/Backflow%20Prevention%20Technician