Overview
EN ISO 13626:2004 (ISO 13626:2003) applies to the petroleum and natural gas industries and specifies requirements and recommendations for steel drilling and well‑servicing structures. The standard covers design, ratings, materials, fabrication, welding, quality control and documentation for new designs of standard steel derricks, special steel derricks, portable masts and substructures. It provides a uniform method of rating these structures and defines two product specification levels. Annex A lists supplementary purchaser‑specified requirements.
Key topics and technical requirements
- Scope and applicability: Applies to all new designs of standard and special steel derricks, portable masts and substructures used in drilling and well‑servicing operations.
- Product specification levels: Two product specification levels (PSLs) give manufacturers and purchasers options for required detail and testing.
- Marking and information: Nameplate and documentation requirements for derricks, masts, substructures and crown block assemblies to ensure traceability and safe operation.
- Standard ratings and design loading: Uniform rating methods for static and dynamic conditions; design loading considerations include wind, dynamic loading (e.g., floating hull motion), and earthquake effects.
- Materials and welding: Material selection, mechanical property requirements, material qualification and specific welding provisions including qualifications, consumable control and post‑weld heat treatment where applicable.
- Quality control and testing: Inspection, non‑destructive examination (NDE), dimensional verification, testing, workmanship standards and manufacturer traceability.
- Documentation and verification: Requirements for documentation to be retained by the manufacturer and delivered with equipment; design verification procedures.
- Annexes: Normative Annex A for supplementary purchaser requirements and Annex B containing standard derrick illustrations/details.
Practical applications and users
EN ISO 13626:2004 is used to specify, design, fabricate, inspect and purchase safe, fit‑for‑purpose drilling and well‑servicing structures. Typical users include:
- Drilling and well‑servicing equipment manufacturers and fabricators
- Drilling contractors and rig operators procuring derricks, masts and substructures
- Structural and mechanical engineers performing design and verification
- Quality assurance, inspection and NDE personnel
- Purchasers and project engineers who specify product specification levels and Annex A options
- Certification bodies and regulatory authorities referencing harmonized European (CEN) adoption
Related standards
- ISO 13535 (Hoisting equipment) - referenced normative standard for related hoisting equipment design and safety
- ISO/TC 67 publications and other CEN/TC 12 documents governing petroleum industry equipment
EN ISO 13626:2004 is valuable for ensuring consistent safety, mechanical performance, quality control and purchaser–manufacturer clarity when specifying drilling and well‑servicing structures in the petroleum and natural gas industries.