Can you explain the process of conducting a backflow prevention inspection in a commercial building?

Sample interview questions: Can you explain the process of conducting a backflow prevention inspection in a commercial building?

Sample answer:

1. Pre-Inspection Preparation:
2. Review the building’s plumbing plans and backflow prevention assembly records to gather necessary information.
3. Ensure you have the appropriate tools and equipment, including a backflow testing kit, pressure gauges, a thermometer, and a checklist.

4. Notify the building occupants and tenants about the upcoming inspection.

5. Isolating the Backflow Preventer:

6. Locate and identify all backflow preventers within the building.

7. Isolate the backflow preventer by closing the upstream and downstream valves.

8. Visual Inspection:

9. Inspect the backflow preventer for any physical damage, leaks, or signs of corrosion.
10. Check for proper installation and orientation of the device.

11. Verify that the test cocks are present and accessible.

12. Pressure Testing:

13. Connect the pressure gauges to the test cocks on the backflow preventer.
14. Open the upstream and downstream valves slowly to pressurize the system.
15. Observe the pressure readings and compare them to the manufacturer’s specifications.

16. If the pressure readings are not within the acceptable range, further investigation may be necessary.

17. Flow Testing:

18. Open the test cocks on the backflow preventer to … Read full answer

    Source: https://hireabo.com/job/12_0_11/Backflow%20Prevention%20Technician