Nace CP 1 - Page 8

CP 1 – Cathodic Protection Tester Course Manual
© NACE International, 2000
02/01/05
Resistivity Probe..............................................................................................................5:31
Measuring pH............................................................................................ 5:31
Use of Pipe Locating Devices................................................................... 5:32
Conductive.......................................................................................................................5:33
Inductive..........................................................................................................................5:34
Use of Current Interrupters....................................................................... 5:35
Coupon Measurements.............................................................................. 5:35
Section 6
Chapter 6–Stray Current Interference
Definitions................................................................................................... 6:1
Effects ......................................................................................................... 6:1
Sources........................................................................................................ 6:1
Types of Stray Current................................................................................ 6:2
Dynamic Stray Current...................................................................................................... 6:2
Steady State Stray Current................................................................................................. 6:2
Identification of Stray Current.................................................................... 6:3
Dynamic Stray Current...................................................................................................... 6:3
Steady State Stray Current................................................................................................. 6:4
Stray Current Corrosion Control................................................................. 6:6
Mitigation Bonds............................................................................................................... 6:6
Mitigation with Cathodic Protection.................................................................................. 6:8
Experiment 6.1 — Demonstration of Cathodic Interference............................................. 6:9
Section 7
Chapter 7–Monitoring Cathodic Protection Effectiveness
and Recordkeeping
Introduction................................................................................................. 7:1
Reasons for Monitoring .............................................................................. 7:1
Monitoring Requirements........................................................................... 7:2
Monitoring Cathodic Protection ................................................................. 7:2
Recordkeeping ............................................................................................ 7:4
Importance of Good Record Keeping......................................................... 7:4
Technical ........................................................................................................................... 7:4
Legal.................................................................................................................................. 7:4
Data Sheets.................................................................................................. 7:4
Date, Time, and Weather................................................................................................... 7:4
Sketches............................................................................................................................. 7:5