Sample interview questions: How do you handle situations where a backflow prevention device needs to be removed temporarily for water system flushing or cleaning?
Sample answer:
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Notify the appropriate authorities: Inform the local water utility and health department that the backflow prevention device will be temporarily removed for flushing or cleaning.
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Isolate the device: Shut off the water supply to the device and drain the system downstream of the device.
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Remove the device: Carefully remove the backflow prevention device according to the manufacturer’s instructions.
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Cap the lines: Cap the water supply line and the discharge line to prevent water from backflowing into the potable water system.
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Flush or clean the system: Conduct the necessary flushing or cleaning procedures on the water system.
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Reinstall the device: Once the flushing or cleaning is complete, reinstall the backflow prevention device as per manufacturer’s instructions.
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Test the device: Test the backflow prevention devi… Read full answer
Source: https://hireabo.com/job/12_0_11/Backflow%20Prevention%20Technician