cathodic protection

KOC WARA PRESSURE

MAINTENANCE PROJECT

Site Survey

Design & Drawings / Specification

Manufacturing & Inspection

Shipping Supervision for Site Installation

Supervision for Test & Commissioning Training Hand Over

Site Inspection

For Tank

For Piping

1. Project Execution Plan

MR and International Standard

Title

MR-090768-46-320-002 Material Requisition

NACE RP0169 Control of External Corrosion on Underground or Submerged Metallic Piping System

NACE RP0177 Mitigation of Alternating Current and Lightning Effects on Metallic Structure and Corrosion Control System

NACE RP0193 External Cathodic Protection of On-Grade Metallic Storage Tank Bottom

NACE RP0572 Design, Installation, Operation, and Maintenance of Impressed Current Deep Ground Beds

BS 7361 Cathodic Protection – Part 1, Code of Practice for Land and Marine Application

NACE RP0286 The Electrical Isolation of Cathodically Protection Pipelines

A. Reference Main Specification List

C. Shallow Bed System / Distribution for U/G Piping

1. Typical Schematic Diagram / in Terminal

●Auger Boring

●Anode Bed

2. Shallow Bed System : Typical Details

C. Shallow Bed System / Distribution for U/G Piping

Installation Photos

• Auger Boring • Anode Installation

• Cabling • Cable Termination

3. Typical Installation Process C. Shallow Bed System / Distribution for U/G Piping

D. Grid System for Tank Bottom External Surface

1. Typical Schematic Diagram

●Spot welding : Conductor Bar & MMO Ti Ribbon Anode

●Spot welding : Conductor Bar & Conductor Bar

●Reference Electrode

●Power Feeder

●Monitoring Tube

D. Grid System for Tank Bottom External Surface

2. Typical Layout

•Monitoring Tube •Spot Welding

•Connection Diagram

D. Grid System for Tank Bottom External Surface

3. Typical Details(1/3)

•Reference Electrode

•Power Feeder

D. Grid System for Tank Bottom External Surface

3. Typical Details(2/3)

•Sump Location

•Sleeve for Monitoring Tube •Sleeve for CP Cable

D. Grid System for Tank Bottom External Surface

3. Typical Details(3/3)

a. HDPE Sheet b. 1st Backfill & Compaction /

350mm

c. MMO Ribbon &

Conductor Bar

c. MMO Ribbon &

Conductor Bar d. Monitoring Tube d. Reference Electrode

D. Grid System for Tank Bottom External Surface

4. Typical Installation Process(1/5)

Spot welding : Conductor Bar

and MMO Ti Ribbon Anode

Spot welding : Conductor Bar

and Conductor Bar

D. Grid System for Tank Bottom External Surface

4. Typical Installation Process(2/5)

Monitoring Tube

D. Grid System for Tank Bottom External Surface

4. Typical Installation Process(3/5)

Spot welding : Conductor Bar and Power Feeder

Anode Lead Wire Connection to Power Feeder

Protection for Anode Wire Connection Point/Power Feeder

D. Grid System for Tank Bottom External Surface

4. Typical Installation Process / Power Feeder Install(4/5)

D. Grid System for Tank Bottom External Surface

4. Typical Installation Process(5/5)