EN ISO 15257:2017 PDF

Overview - EN ISO 15257:2017 (Cathodic protection competence levels)

EN ISO 15257:2017 (ISO 15257:2017) defines a structured framework of competence levels for cathodic protection (CP) persons and provides the basis for a certification scheme aligned with ISO/IEC 17024. The standard covers the knowledge, skills and task-based requirements for CP personnel involved in survey, design, installation, testing, maintenance and advancing CP practice. It applies across four application sectors: on‑land metallic structures, marine metallic structures, reinforced concrete structures, and inner surfaces of metallic structures containing an electrolyte.

Key topics and technical requirements

• Five competence levels (Clause 4):
  • Level 1 – CP data collector (or tester)
  • Level 2 – CP technician
  • Level 3 – CP senior technician
  • Level 4 – CP specialist
  • Level 5 – CP expert
• Application sectors (Clause 5) with sector‑specific task sets and technical considerations.
• Minimum knowledge and task requirements (Clause 6) that describe what personnel must know and be able to do at each level and for each sector.
• Certification scheme requirements designed to comply with ISO/IEC 17024, including:
  • Eligibility and assessment criteria (Annex A)
  • Examination and assessment processes (Annex B)
  • Certificate issuance, validity, re‑certification and transition provisions (Annex C)
• The standard is based on a formal job task analysis (JTA) and is the international successor to EN 15257:2006.

Practical applications - who uses EN ISO 15257:2017

• Certification bodies developing CP personnel certification schemes that meet ISO/IEC 17024 requirements.
• Employers and asset owners (pipelines, storage tanks, ships, offshore structures, reinforced concrete bridges and buildings) seeking to verify competencies of CP staff and contractors.
• CP practitioners (data collectors, technicians, designers, specialists and experts) for career development, role definition and training alignment.
• Training organizations and assessors who design courses, exams and practical assessments to meet the standard’s task and knowledge requirements.
• Regulators and procurement teams including competence criteria in contracts and inspection specifications.

Related standards

• ISO/IEC 17024 - Conformity assessment: general requirements for bodies certifying persons (required framework for the certification scheme).
• ISO 8044 - Terms and definitions relevant to corrosion (referenced for terminology).
• EN 15257:2006 - earlier European version superseded by EN ISO 15257:2017.

EN ISO 15257:2017 helps standardize CP competence definitions and supports robust, auditable certification - improving safety, asset integrity and consistency in cathodic protection practice.