In offshore and industrial steel fabrication, quality is measured not only by the finished product but also by the manufacturing process behind it. EN 1090 EXC3 certification demonstrates a manufacturer’s ability to fabricate structural steel in accordance with European standards, ensuring controlled production processes, consistent quality, and complete traceability throughout fabrication.
What is EN 1090 EXC3?
EN 1090 is the European standard that specifies the requirements for the fabrication of structural steel and aluminium structures. The standard establishes a quality-controlled manufacturing framework to ensure structural safety, mechanical performance, and consistent production quality.
A key element of EN 1090 is the Execution Class (EXC), which defines the technical requirements for different categories of steel structures based on their intended application and associated risk level.
Figure 1. Execution Classes under EN 1090
OTS is certified for Execution Class up to EXC3, enabling the company to manufacture structural steel components for projects requiring a high level of technical performance and quality assurance.
What Does EN 1090 EXC3 Require?
Achieving EN 1090 EXC3 certification requires more than advanced fabrication capabilities. Manufacturers must establish and maintain a Factory Production Control (FPC) system to ensure consistent quality throughout the entire manufacturing process.
Figure 2: EN 1090 EXC3 Certification
A typical Factory Production Control system includes:
- Production process control
- Welding quality management
- Material traceability
- Non-Destructive Testing (NDT)
- Quality documentation and manufacturing records
Together, these elements provide a structured framework for maintaining product consistency and compliance with project specifications.
How OTS Applies EN 1090 EXC3
Figure 3: EN 1090 EXC3 Implementation Process
At OTS Offshore, the Factory Production Control (FPC) system is integrated throughout the fabrication process to ensure that every structural steel component is manufactured under controlled conditions.
By applying standardized production procedures, qualified welding practices, material traceability, inspection activities, and comprehensive quality documentation, OTS maintains consistent manufacturing quality while improving overall production efficiency.
Benefits for Customers
Choosing a manufacturer certified to EN 1090 EXC3 provides significant advantages for offshore and industrial projects.
Structural Reliability
Steel structures are manufactured under controlled production procedures that support structural integrity, load-bearing performance, and long-term operational reliability.
Consistent Product Quality
The Factory Production Control system helps ensure uniform manufacturing quality across different production batches and projects.
Full Transparency and Traceability
Comprehensive production records and material traceability simplify inspection, auditing, and client acceptance procedures.
Reduced Project Risk
A controlled manufacturing process minimizes fabrication errors, reducing rework, project delays, and associated costs.
Compliance with International Standards
EN 1090 EXC3 certification enables OTS to meet the quality expectations commonly required in international offshore, energy, infrastructure, and heavy industrial projects.
OTS Commitment to Quality
For OTS Offshore, EN 1090 EXC3 is more than a certification—it is an integral part of our comprehensive quality management system.
Combined with internationally recognized standards such as EN ISO 3834-2, our Make-to-Order (MTO) manufacturing approach, experienced engineering professionals, and dedicated QA/QC processes, OTS delivers structural steel fabrication solutions designed to meet the highest standards of safety, reliability, and operational performance for Offshore, Oil & Gas, and industrial projects.
