137th Backflow Repair

Contractors are capable of repairing backflow preventer devices across the base. These devices did not pass required annual inspections or were identified as no longer meeting code to be repaired or replaced. As a results of findings from a resent base cross-connection survey, the fire riser in Building 1045 at Will Rogers Air National Guard Base does not contain an approved backflow prevention device to protect potable water supplies. The existing two check valves installed in series in 1995 needs to be replaced with a new double check valve assemble. A Qualified Fire Protection Engineer will need to design and specify the replacement backflow assembly per UFC 3-600-01, para 9-6.6: the installation of a backflow preventer will follow AWWA Manual M 14, furthermore, per UFGS 21 13 13 Wet Pipe Sprinkler Systems, Fire Protection requires it to be a Double-check valve assembly backflow preventer complying with ASSE 1013, ASSE 1015 and AWWA M14. Per AFI32-1066, section 8.3, Backflow Prevention Devices are to be inspected annually. Of the 63 devices inspected on base in September of 2021, 18 Backflow Preventer Devices did not pass. As a result, these failed backflow prevention devices will need repaired or replaced as needed to pass inspection in order to protect installation potable water. Contractors would employ services of a Qualified Fire Protection Engineer (QFPE) to design and specify a replacement backflow prevention assembly for the fire sprinkler riser in Building 1045 per UFC 3-600-01, AWWA Manual M 14, UFGS 21 13 13 Wet Pipe Sprinkler Systems, Fire Protection, ASSE 1013, and ASSE 1015 and repair additional as needed.

Division 21 -	Fire Suppression.
Division 28 -	Electronic Safety and Security, Fire Detection and Alarm.
Division 33 -	Utilities, Instrumentation and Control for Utilities, Water Utilities, Water Utility Distribution Piping, Water Utility Distribution Equipment, Disinfecting of Water Utility Distribution, Water Utility Storage Tanks.