irstly, it is important to bear in mind that in any EPC (Engineering, Procurement and Construction) contract, the margin for error is virtually zero. Industrial facilities, processing plants or energy infrastructure designed, procured and constructed under this contractual model operate in environments where a poorly documented component, an outdated version of a drawing or an unrecorded design change can lead to plant shutdowns, claims running into millions or, in the worst-case scenario, serious accidents. 

In this context, traceability is not a bureaucratic requirement: it is the backbone of project management. Knowing at all times what has been decided, who has approved it, what materials have been used and where they come from is what distinguishes a well-managed project from one exposed to risks that are difficult to manage. In this article, we examine what it means to ensure full traceability in high-risk EPC projects, which elements are essential, and how digital tools and the selection of the right suppliers determine the final outcome. 

 What is traceability in EPC projects? 

In reality, the concept of traceability is broad and is often reduced to its documentary aspect. In high-risk EPC projects, however, its scope is much broader: it encompasses people, materials, decisions and processes throughout the entire project lifecycle. 

 Technical definition of traceability 

In sectors such as engineering and construction, traceability is defined as the ability to identify and reconstruct the complete history of an item– be it a document, a component, a decision or a process – throughout all phases of the project. This means that any party involved can access, at any time, the information trail detailing the current status of that item: who created it, who modified it, when and why.  

 The difference between documentary traceability and operational traceability 

On the one hand, document traceability refers to the management of all information generated during the project: drawings, technical specifications, contracts, change orders, inspection reports and certificates. Operational traceability, on the other hand, focuses on the physical and functional tracking of the components that make up the installation: equipment, pipes, valves, flanges and structural components, from manufacture through to commissioning. 

Both dimensions are interdependent. A component that is clearly identifiable on site but for which the documentation is incomplete is a source of risk. Similarly, documentation that is flawless but does not match what has actually been installed is worthless.  Full traceability requires that both dimensions remain aligned at all times. 

 Why traceability is critical in high-risk projects 

The lack of traceability in high-risk projects can have very serious consequences. The relevant standards (ASME, PED, ISO 9001, among others) require comprehensive documentation as a prerequisite for commissioning. EPC contracts, due to their fixed-price nature and the contractor’s full liability, amplify the impact of any deviation that is not detected in time. And the deadlines, which are usually tight, do not allow for the collection of information that should have been recorded from the outset.  

 Key elements for ensuring full traceability 

There is no single measure that guarantees full traceability in an EPC project. In order to achieve this, it is necessary to systematically implement a number of elements which, together, form a robust control system. 

 Centralised document management system 

The first pillar is to have a single, centralised repository where all project documentation is stored. The scattering of information across emails, local folders or incompatible systems is one of the main causes of a loss of traceability. A centralised system ensures that all stakeholders (engineering, procurement, construction, client) always work from the same source, with controlled access and a record of activity. 

 Version control and changes 

In an EPC project, documents are constantly evolving. A plan may go through dozens of revisions before reaching the final construction version. Without rigorous version control, it is impossible to know which version was used at each stage, who approved each change, and what impact it has had on other related documents or components. Change control is not merely an administrative procedure: it ensures that design decisions are correctly translated into the built reality. 

 Record of technical and commercial decisions 

One of the most common sources of conflict in EPC projects is the failure to document decisions made during implementation. Substitutions of materials, verbal agreements on specification changes, and design adjustments that have not been formally documented: any of these elements, without proper documentation, becomes a potential risk during the finalisation phase or in the event of a claim. The systematic recording of all decisions, together with their technical justification and the identification of those responsible, is a prerequisite for full traceability. 

 Audit and ongoing verification 

Obviously, traceability isn’t just checked at the end of the project.  Regular internal audits, third-party inspections and ongoing verification processes enable deviations to be identified whilst there is still time to rectify them. In high-risk projects, waiting until final handover to review the documentation is a strategy that exposes the contractor to undesirable consequences. 

 Traceability in the supply chain for critical components 

In addition to the traceability of the project, it is important to take into account the traceability of its components. In high-demand installations, the components that make up piping systems, valves and pressure vessels must be delivered to the site accompanied by documentation that allows their origin, composition and suitability for service to be verified . This is where the choice of supplier is crucial. 

 The importance of material certificates in EPC projects 

We are referring to the document that certifies the chemical composition and mechanical properties required for the manufacture of a component. In EPC projects subject to standards such as ASME B16.5, EN 1092 or  ASTM, the availability of Type 3.1 or 3.2 certificates in accordance with EN 10204 is not optional: it is a contractual and regulatory requirement that determines the acceptance of components on site and the approval of the installation. 

Failure to provide these certificates, or submitting incomplete ones, can halt the receipt of materials, delay the start-up process and incur additional costs that are difficult to recover under a fixed-price contract. 

 Heat numbers, batches and metallurgical traceability 

The heat number is the identifier that links a cast component to the casting process from which it originates. This reference makes it possible to trace, at any time, the exact composition of the material, the heat treatment applied and the tests carried out on that casting. In process facilities, where metallurgical compatibility between components is critical to safety and the facility’s service life, traceability by casting is not merely a technical detail: it is a guarantee of integrity. 

 Inspections and tests: documentation accompanying the component 

In addition to material certificates, critical components must be accompanied by reports on the tests carried out during their manufacture: non-destructive testing (NDT), hydrostatic tests, dimensional inspections, hardness tests. This documentation constitutes the technical file for the component and must be available upon delivery to the site, during inspection by the client or the notified body, and throughout the entire service life of the installation. 

A supplier who provides their components with a complete set of documentation from the outset significantly reduces the administrative burden on the project’s procurement and quality teams, and eliminates one of the most common causes of delays during the acceptance phase. 

 How to choose a supplier of forged components with guaranteed traceability 

When selecting a supplier of flanges, elbows, reducers and other forged components for EPC projects, traceability is just as important a selection criterion as price or lead time. High-risk projects cannot afford to use suppliers who do not have robust documentation systems, who do not issue 3.1 certificates on a regular basis, or who cannot verify the origin of their materials. 

 Digital tools and BIM for traceability 

The complexity of large-scale EPC projects makes it virtually impossible to manage traceability manually.  Digital tools do more than just automate data entry: they transform the way teams collaborate and make decisions. 

 BIM platforms and shared data environments (CDE) 

 Building Information Modelling (BIM) has evolved from a 3D design tool into a comprehensive project information management system. In the context of EPC projects, Common Data Environments (CDEs) enable all project documentation to be centralised in a single digital space accessible to all authorised parties, complete with version control, access logs and structured approval workflows. 

 EPC integrated management software 

Integrated management platforms specifically designed for EPC projects enable the coordinated management of engineering, procurement and construction using a shared database. Traceability is a built-in feature of these platforms: every element of the project is linked to its complete documentation history, progress status and key milestones. 

 Procurement tracking systems 

The procurement department is one of the areas posing the greatest risk in terms of traceability. Procurement tracking systems enable the status of each order to be monitored, from the issuance of the purchase order through to delivery on site and document verification, providing real-time visibility for the project team. Integrating these systems with document control ensures that no component is installed without its documentation having first been reviewed and approved . 

 Tools for monitoring progress on site 

During the construction phase, monitoring of physical progress must be kept constantly in line with the project’s documentation status. Site management tools that incorporate document traceability enable the immediate identification of situations where physical progress outstrips the availability of approved documentation; this constitutes a risk indicator that must be addressed before it becomes a contractual issue. 

ULMA Forged Solutions manufactures flanges and forged components for the most demanding sectors, with a comprehensive traceability system that covers everything from the selection of raw materials to the handover of the manufacturing dossier. Each component is linked to its material certificate, heat number and inspection reports, ensuring that the project team has all the necessary information at their fingertips when they need it.