ISO 15589-1:2015

Overview

ISO 15589-1:2015 - “Petroleum, petrochemical and natural gas industries - Cathodic protection of pipeline systems - Part 1: On-land pipelines” - specifies requirements and recommendations for the full lifecycle of cathodic protection (CP) for on‑land pipelines. The standard covers pre‑installation surveys, design, materials, equipment, installation, commissioning, operation, inspection and maintenance of CP systems for buried pipelines, landfalls, and immersed on‑land sections (river/lake crossings). It applies to pipelines of carbon steel, stainless steel, cast iron, galvanized steel, and copper, and can be applied to pipelines in other industries (industrial gases, water, slurries).

Key Topics and Requirements

• Scope & applicability: On‑land pipelines and related immersed sections; excludes reinforced concrete pipelines covered by EN 12696. Notes on special conditions where CP can be ineffective (shielding, disbonded coatings, thermal insulation, rocky soils, unusual contaminants).
• CP criteria: Protection potentials, alternative assessment methods such as the 100 mV cathodic potential shift, and handling of a.c. interference.
• Pre‑installation prerequisites: Electrical continuity and isolation, isolating joints, earthing, lightning/overvoltage protection, coating integrity, trench backfill selection, buried casings, and mitigation equipment for a.c./d.c. interferences.
• Design fundamentals: Information requirements for design reports, calculation of CP current demand (theoretical and coating‑breakdown approaches), cable selection and routing, temporary protection and special cases for existing or parallel pipelines.
• Impressed current systems: Power supply, groundbed designs (deep‑well and shallow), anode types and conductive backfill, output control and potential/current distribution.
• Galvanic anode systems: Design requirements including zinc and magnesium anodes, anode backfill, cabling and installation.
• Monitoring & commissioning: Test stations, probes/coupons, bonding, line current monitoring, commissioning procedures, start‑up checks and verification of effectiveness.
• Personnel competence: Requirements for qualified CP personnel to plan, design, install and maintain systems.

Applications / Who Uses It

• Pipeline operators and asset integrity managers ensuring long‑term corrosion protection.
• Cathodic protection and corrosion engineers designing impressed‑current and sacrificial‑anode systems.
• Construction and maintenance contractors, inspection teams, and certification bodies.
• Utilities and industrial plant owners transporting liquid or gaseous media on land. ISO 15589-1 supports regulatory compliance, risk reduction from pipeline corrosion, and consistent monitoring/maintenance practices.

Related Standards

• ISO 13623, EN 14161 (pipeline system definitions/design)
• EN 1594, EN 12007‑1/‑3 (gas supply industry practices in Europe)
• EN 12696 (cathodic protection of reinforced concrete)

Keywords: ISO 15589-1:2015, cathodic protection, on‑land pipelines, pipeline corrosion, impressed current, galvanic anodes, pipeline monitoring, CP design.