cathodic protection
DESCRIPTION
Cathodic protection for pipilinesTRANSCRIPT
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)