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51599 USING VISUAL TRAINING AIDS IN TEACHING CATHODIC INTERFERENCE MITIGATION

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Product Number: 51300-01599-SG
ISBN: 01599 2001 CP
Author: John H. Fitzgerald III, P.E.
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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
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
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Combined Cathodic and Anodic Interference in Pipeline - An Analysis

Product Number: 51317--9004-SG
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In this paper exhaustive field study trials to monitor the pipe to soil potential over an extended time period and subsequent analysis of data has been discussed with reference to the critical Combined Cathodic and Anodic Interference phenomena observed on pipelines.
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03710 INTERFERENCE TESTING AND CASE HISTORIES

Product Number: 51300-03710-SG
ISBN: 03710 2003 CP
Author: Jeffrey L. Didas
Publication Date: 2003
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Interference Testing is a task learned through education and experience and is one of the basic skills of Cathodic Protection Personnel. This paper will discuss interference testing and present some case histories, of basic static interference situations and the mitigation methods used.
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