Nuclear & Energy Engineering OS

    Your cardinal data, consistent across every discipline.

    Koddex gives your multi-discipline engineering teams a shared, structured reference for physical parameters, with full versioning and automatic change propagation. No more manual data transmission between neutronics, thermal-hydraulics and mechanics.

    Koddex nuclear engineering sketch — reactor architecture diagram
    koddex · Reactor Cardinal Data
    SMR Unit Alpha-1System
    Reactor Core ModuleSubsystem
    Fuel Assembly FA-120Component
    Control Rod CR-08Component
    Primary Cooling LoopSubsystem
    Coolant Pump CP-400Component
    Heat Exchanger HX-200Component
    Safety Shutdown SystemSubsystem
    REQ: IEC 61513 I&CRequirement
    REQ: IAEA SSR-2/1Requirement
    REQ: 60-Year LifecycleRequirement
    We understand the challenges

    Patterns we see in every multi-discipline nuclear team.

    From conversations with engineering leaders in reactor design, nuclear safety and multi-physics simulation, the same structural challenges keep coming up.

    Cardinal data scattered across files.

    "Each discipline works on the same reactor, but with its own tools and its own version of the data. Synchronization is almost entirely manual."

    Neutronics, thermal-hydraulics, mechanics: each team generates and consumes physical parameters that others depend on. When these parameters live in spreadsheets, consistency becomes a full-time job instead of a guarantee.

    Head of Calculations, Nuclear Engineering

    Manual transmission between disciplines.

    "When a value changes in neutronics, the mechanical team needs to know immediately. Today, that depends on someone remembering to send an email."

    The risk isn't the calculation itself. It's the handoff. A casing radius updated in one discipline but not propagated to another can cascade into costly rework, sometimes measured in millions of euros.

    Multi-discipline Data Manager, SMR Program

    No single source of truth for the model.

    "We need one shared nomenclature for exchanged parameters, with full traceability of who defined each value and when it was revised."

    When multiple teams model the same physical object with different granularity, you need a tool that can aggregate, adapt and trace data across views while keeping everyone aligned on the same reference.

    Lead Engineer, Reactor Design Studies

    Built for your regulatory landscape.

    IEC 61513IEC 61508IAEA SSR-2/1IAEA GSR Part 410 CFR 50EUR StandardsRCC-E / RCC-MISO 19443SOC 2 Type II
    Templates & Onboarding

    A library of certification-ready templates, and humans to deploy them with you.

    Koddex ships with reusable models covering the requirements, tests and documentation you need for the most demanding certifications. Migrate your existing data in days, not quarters, and let our team set it up with you.

    koddex · template · KDX-NUC-001
    IEC 61513 / IAEA SSR-2/1
    Nuclear I&C and Safety · pre-built template
    Reactor Protection System RPS-1System
    Sensor Channel CH-AComponent
    Logic Cabinet LC-2Component
    REQ: IEC 61513 Class 1Requirement
    REQ: IAEA SSR-2/1 Req. 24Requirement
    REQ: IEC 61508 SIL 3Requirement
    TEST: Type Test IEC 60780Test
    PSA / Safety Classification Matrix5×5 · severity × probability
    Certification-ready template library

    Pre-built models, requirement trees, risk matrices and test artifacts mapped to industry standards (MDR, DO-178C, ISO 19650…). Start from a baseline that already speaks the language of your auditors.

    Accelerated data migration

    Import your existing BOMs, requirements and engineering data into a structured graph in days. Stop rebuilding from scratch on every new project.

    Expert workshops & integration

    Our engineering team runs hands-on workshops and integration sessions with yours, so the platform is operational and adopted from week one.

    Use Cases

    One backbone for your entire nuclear engineering ecosystem.

    Whether you're designing a new SMR or managing multi-physics data across a 60-year lifecycle, Koddex structures your engineering knowledge.

    One reference for all disciplines

    Cardinal Data Management

    Centralize your physical parameters in a structured, versioned repository. Each discipline reads from the same source, with role-based views adapted to neutronics, mechanics or thermal-hydraulics.

    Cascade updates automatically

    Versioning & Change Propagation

    When a parameter changes, Koddex creates a new revision and notifies every downstream consumer. No more wondering whether your calculation uses the latest casing radius or an outdated value.

    Who defined what, and when

    Cross-Discipline Traceability

    Every value has a full audit trail. Track who created a parameter, who revised it, and which calculations depend on it. Demonstrate data consistency for safety reviews with confidence.

    Connect your simulation codes

    API-First Integration

    Query and feed data programmatically via API. Integrate with your Python codes, CAD tools and internal scripts. Koddex manages its own versioning so your automation pipelines always use the right revision.

    Secure hosting in Europe

    Data Sovereignty & Security

    Sensitive nuclear data stays in certified European infrastructure. Fine-grained access control ensures each team sees only the data relevant to their scope, with full audit logging.

    Same object, different views

    Multi-Granularity Modeling

    Neutronics simplifies geometry while mechanics needs full detail. Koddex lets each discipline model at its own granularity while maintaining consistency through computed aggregations and linked references.

    What nuclear engineering leaders say.

    Real feedback from engineers who share the same multi-discipline data challenges.

    "We need an environment that gives us the flexibility of a spreadsheet with the structure and traceability of real software. That's exactly what this tool delivers."
    Head of Calculations
    SMR Reactor Design Program
    Multi-discipline team across neutronics, thermal and mechanics
    "The cascade versioning is key for us. When a physical parameter changes, every discipline that depends on it must be notified and update their calculations. Today that process is entirely manual."
    Multi-discipline Data Manager
    Nuclear Engineering Start-up
    Managing cardinal data across 3+ engineering disciplines
    "Mastering our data before the detailed design phase starts is essential. Using the wrong parameter in a nuclear project can cost millions in rework."
    R&D Program Director
    Advanced Reactor Development
    Preparing multi-physics data consistency for safety demonstrations
    Quality EngineerQuality Engineer
    Systems EngineerSystems Engineer
    Methods EngineerMethods Engineer
    Test EngineerTest Engineer
    Config ManagerConfig Manager
    R&D LeadR&D Lead
    Koddex

    Engineering Operating System : Drive complex systems and ship certifications without frictions.

    Stop bleeding hours on version chasing, audit prep and cross-team sync. Ship certified hardware faster, on a foundation built for the next decade of complexity.

    Enterprise-grade security. Library of certification-friendly templates. Custom deployment for teams of 200+.