100 percent of the time, a bypass and a second RP principle backflow preventer will be
required to provide an uninterrupted protected supply from the potable system.
Administrative Issues. Administrative issues, including legislation,
education, and licensing, are discussed in the publication listed in par. 2.2.10.
Additional Air Force requirements are listed in par. 220.127.116.11.
Records of Inspection. Use an appropriate form approved by the military
service to record data on all cross-connections. Provide the location, degree of hazard,
description of air gap or protective device installed, and a sketch of the installation on
the form. After each inspection is completed, record the date of inspection, test results,
observations, corrective action taken, and name of the inspector on the appropriate
form. For an air gap, the test consists of a visual inspection, with "OK" recorded.
Testing for other backflow devices is more involved.
Location Records. In general, records of all cross-connection control or
backflow prevention devices should be prepared and properly maintained. These
records are to include an inventory listing of all locations and an individual record on