Interference mitigation can be a difficult subject to teach. This paper describes two training aids that can be used in the field and in the classroom to explain cathodic interference. One aid uses a short length of aluminum foil, representing the interfered structure, which is placed in the path of a stray current. The corrosive effect of interference is manifested by the destruction of the anodic portion of the foil. The
second aid is a miniature pipeline crossing simulator with which pipe to soil potential changes under the influence of interference can be demonstrated. Mitigation using both natural potential and no-swing
bonds can be demonstrated.
Keywords: cathodic interference, cathodic protection, interference bonds, interference mitigation, stray Current, training aids, teaching interference