CATHODIC PROTECTION SYSTEM (SACRIFICIAL ANODE)

0,05

MB

33

stron

3383

ID

UNITED STATES ARMY CORPS OF ENGINEERS

1998

rok

PART 1 GENERAL

1.1 REFERENCES

1.3 SUBMITTALS

1.3 GENERAL REQUIREMENTS

1.3.1 Services of "Corrosion Expert"

1.3.2 Contractor's Modifications

1.3.3 Isolators

1.3.4 Anode and Bond Wires

1.3.5 Surge Protection

1.3.6 Summary of Services Required

1.3.7 Nonmetallic Pipe System

1.3.7.1 Coatings

1.3.7.2 Tracer Wire

1.3.8 Tests of Components

1.3.9 Drawings

1.3.10 Electrical Potential Measurements

1.3.11 Achievement of Criteria for Protection

1.3.12 Metallic Components and Typicals

1.3.13 Metallic Component Coating

PART 2 PRODUCTS

2.1 MAGNESIUM ANODES

2.1.1 Anode Composition

2.1.2 Dimensions and Weights

2.1.3 Packaged Anodes

2.1.4 Zinc Anodes

2.1.5 Connecting Wire

2.1.5.1 Wire Requirements

2.1.5.2 Anode Header Cable

2.2 MISCELLANEOUS MATERIALS

2.2.1 Electrical Wire

2.2.1.1 Wire Splicing

2.2.1.2 Test Wires

2.2.1.3 Resistance Wire

2.2.2 Conduit

2.2.3 Test Boxes and Junctions Boxes

2.2.4 Joint, Patch, Seal, and Repair Coating

2.2.5 Backfill Shields

2.2.6 Epoxy Potting Compound

2.2.7 Test Stations

2.2.8 Joint and Continuity Bonds

2.2.9 Resistance Bonds

2.2.10 Stray Current Measurements

2.2.11 Electrical Isolation of Structures

2.2.11.1 Electrically Isolating Pipe Joints

2.2.11.2 Electrically Conductive Couplings

2.2.11.3 Insulating Joint Testing

2.2.12 Underground Structure Coating

2.2.12.1 Field Joints

2.2.12.2 Inspection of Pipe Coatings

2.2.13 Resistance Wire

2.2.14 Electrical Connections

2.2.15 Electrical Tape

2.2.16 Permanent Reference Electrodes

2.2.17 Casing

PART 3 EXECUTION

3.1 CRITERIA OF PROTECTION

3.1.1 Iron and Steel

3.1.2 Aluminum

3.1.3 Copper Piping

3.2 ANODE STORAGE AND INSTALLATION

3.2.1 Anode Storage

3.2.2 Anode Installation

3.2.2.1 Single Anodes

3.2.2.2 Groups of Anodes

3.2.2.3 Welding Methods

3.2.3 Anode Placement - General

3.2.4 Underground Pipeline

3.2.5 Installation Details

3.2.6 Lead Wire Connections

3.2.6.1 Underground Pipeline (Metallic)

3.2.6.2 Resistance Wire Splices

3.2.7 Location of Test Stations

3.2.8 Underground Pipe Joint Bonds

3.3 ELECTRICAL ISOLATION OF STRUCTURES

3.3.1 Isolation Joints and Fittings

3.3.2 Gas Distribution Piping

3.4 TRENCHING AND BACKFILLING

3.5 TESTS AND MEASUREMENTS

3.5.1 Baseline Potentials

3.5.2 Isolation Testing

3.5.2.1 Insulation Checker

3.5.2.2 Cathodic Protection Meter

3.5.3 Anode Output

3.5.4 Reference Electrode Potential Measurements

3.5.5 Location of Measurements

3.5.5.1 Piping or Conduit

3.5.5.2 Tanks

3.5.5.3 Casing Tests

3.5.5.4 Interference Testing

3.5.5.5 Holiday Test

3.5.5.6 Recording Measurements

3.6 TRAINING COURSE

3.7 CLEANUP

3.8 MISCELLANEOUS INSTALLATION AND TESTING

3.8.1 Coatings

3.8.2 Excavation

3.9 SPARE PARTS

3.10 SEEDING

3.11 SYSTEM TESTING

3.12 CLEARING OF TREES AND UNDERBRUSH