UFC 3-570-06
JANUARY 31 2003
7-8.1
Testing a Casing with Cathodic Protection on the Carrier Pipeline... 7-28
7-8.2
Testing a Casing without Cathodic Protection on the
Carrier Pipeline ................................................................................. 7-30
7-9
TESTING FOR A SHORT BETWEEN TWO STRUCTURES ........... 7-30
7-9.1
Testing for a Short Between Two Structures with
Cathodic Protection on One Structure .............................................. 7-31
7-9.2
Testing for a Short Between Two Structures with
Cathodic Protection on Both Structures ............................................ 7-33
7-9.3
Testing for a Short Between Two Structures without
Cathodic Protection on Either Structure............................................ 7-36
7-10
CURRENT REQUIREMENT TESTING PROCEDURES .................. 7-38
7-10.1 Temporary Local Cathodic Protection Systems ................................ 7-38
7-10.2 Existing Metallic Structures ............................................................... 7-39
7-10.3 Temporary Anodes............................................................................ 7-39
7-10.4 Installation of Temporary Anode System .......................................... 7-39
7-10.5 Connections ...................................................................................... 7-40
7-10.6 Before Applying Power...................................................................... 7-40
7-10.7 Applying Power ................................................................................. 7-40
7-10.8 Sufficient Current .............................................................................. 7-40
7-10.9 Calculating Current Requirements .................................................... 7-40
7-10.10 More than One Anode Bed ............................................................... 7-41
7-10.11 Completion of Testing ....................................................................... 7-41
7-11
ELECTROLYTE RESISTIVITY MEASUREMENT ............................ 7-41
7-11.1 Four-Pin Method ............................................................................... 7-42
7-11.2 Two-Pin Method ................................................................................ 7-43
7-11.3 Other Methods (Soil Rod, Soil Box) .................................................. 7-44
7-12
pH TESTING PROCEDURES........................................................... 7-45
7-12.1 Antimony Electrode Test Method ...................................................... 7-46
7-12.2 Chemical Test Method ...................................................................... 7-48
7-13
CALIBRATION OF IR DROP TEST SPAN ....................................... 7-48
7-13.1 Measurement Circuits ....................................................................... 7-50
7-13.2 Direction of Current Flow .................................................................. 7-51
7-13.3 Resistance of the Pipeline ................................................................ 7-52
7-13.4 Multi-Combination Meter ................................................................... 7-54
7-14
INTERFERENCE TESTING PROCEDURES ................................... 7-55
7-14.1 Interference from Cathodic Protection Rectifiers .............................. 7-55
7-14.2 Interference from Variable (Fluctuating) Sources ............................. 7-59
APPENDIX A
AIR FORCE ONLY ................................................................... A-1
APPENDIX B
NAVY ONLY............................................................................. B-1
ARMY ONLY.................................................................................... C-1
APPENDIX C
GENERAL REFERENCES ............................................................ D-1
APPENDIX D
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