Engineering firm specializing in nuclear engineering for safe, sustainable, and sovereign solutions
Engineering firm specializing in nuclear engineering for safe, sustainable, and sovereign solutions
In an increasingly demanding nuclear environment, where every decision impacts industrial performance, safety, and compliance, our engineering firm specializing in nuclear engineering helps you ensure the safety of your projects, manage your risks, and ensure the long-term viability of your facilities—from design and construction through operation and maintenance, all the way to decommissioning.
Your Nuclear Challenges, Our Operational Commitment
Ecia: Nuclear Engineering Supporting Multidisciplinary Projects in the Industry
Ecia is a engineering firm specializing in nuclear engineering that supports stakeholders in the civil and military nuclear sectors as well as in sensitive environments (Naval & Defense). With nearly 20 years of experience, Ecia applies its expertise to major projects in the industry and the energy challenges of tomorrow.
Our teams work in the fields of electrical engineering, control systems, HVAC and ventilation, mechanical engineering, as well as maintenance and decommissioning. This multidisciplinary approach enables us to provide solutions tailored to our clients’ needs.
Ecia supports its clients throughout the entire lifecycle of their facilities—from design to operation, from commissioning to decommissioning—while incorporating requirements for nuclear safety, quality, security, and risk management.
With more than 200 employees located throughout the country, Ecia contributes every day to the performance, sustainability, and evolution of France’s nuclear infrastructure.
Our Services
Technical Support
Consulting with a best-efforts commitment
Providing specific and flexible expertise
Globalization of Technical Assistance
Combining multiple consulting projects into a single contract
Administrative Streamlining & Flexibility
Service Agreement
Service Agreement with Best-Efforts and Performance Commitments
Management Delegation & Service Level Commitment
Time-and-materials contract
Service Agreement with Results and Performance Commitments
Standardization of Deliverables & Productivity Gains
Package
Fixed-price package with guaranteed results
Quality, Cost, and Schedule Management
Our Support
Engineering solutions tailored to every phase of your equipment's lifecycle.
We are involved at every stage to ensure the safety, compliance, and availability of your equipment.
Our Specialties
ELECTRICAL ENGINEERING
STRONG CURRENTS
- HTA / HTB Architecture / LV
- Generator Sets
- Inverters
- Protection Calculations / Cable Sizing
- Equipotential Bonds / EMC
- Lightning Protection
LOW-VOLTAGE CIRCUITS
- Fire Safety System
- Radiation Protection Monitoring
- Voice, Data, Video (VDI)
- Physical Security
- Staff Security System
- Cybersecurity
HVAC AND VENTILATION
FLUID VENTILATION
- Nuclear Ventilation / Conventional
- Fluid Systems
- Airflow Modeling
- Airflow Measurements and Balancing
THERMAL
- Thermal Calculations
- Dynamic Thermal Simulation
- Thermal Modeling
ENERGY OPTIMIZATION
- Improving equipment performance while ensuring a high level of safety
- Reducing operating costs
- Maintaining sites in operational condition (MCO) while reducing the carbon footprint of their operations on the environment
CONTROL AND COMMAND
- Instrumentation
- Automation
- Control
- Networks
- Supervision / Building Automation / HMI
- Industrial IT
RISK MANAGEMENT
- FIRE : DFire detection and protection, compliance with specific APSAD regulations.
- LIGHTNING : Technical solutions for protection against the effects of lightning, analysis of lightning-related risks, assessment of impacts on infrastructure and people.
- INTRUSION AND MALICIOUS ACTIVITY: Solutions for detection, verification, access control, and delaying malicious acts, while helping to define a defense strategy for a sensitive site.
- NUCLEAR SECURITY : Integration of safety requirements into our design, mastery of nuclear operators’ safety standards, and development and justification of safe solutions.
MAINTENANCE ENGINEERING
- Project Management Support (AMO): assistance with the definition, award, and monitoring of contracts for Maintenance in Operational Condition (MOC)
- Improving facility reliability: identification of equipment requiring reliability improvements – FMEA; optimization of maintenance plans and/or recommendations for modifications with preliminary studies; operational safety studies (SDF) – Integrated Logistics Support (ILS) studies
- Improvement Plan
- Diagnostics and Audits
- Maintenance 4.0
DECOMMISSIONING ENGINEERING
- Studies in Preparation for Permanent Shutdown and Decommissioning (MAD/DEM)
- Waste Management
- SENEX Studies / Decommissioning / Operational Simplifications
- Asbestos Removal Studies in Nuclear Environments
Nuclear Quality and Safety: Requirements at the Heart of Our Work
Nuclear safety is the fundamental principle that guides all of Ecia's activities. Our teams support industry stakeholders in the design, modernization, operation, and decommissioning of their facilities by incorporating the requirements of the ASNR in terms of safety, quality, and risk management at every stage of the projects.
A significant portion of Ecia’s activities involves systems and equipment classified as IPSN (Important for Nuclear Safety), demonstrating our teams’ recognized expertise on the nuclear industry’s most strategic projects. Thanks to its multidisciplinary expertise and strong nuclear culture, Ecia provides engineering solutions tailored to its clients’ technical, regulatory, and operational challenges.
Certifications: Guarantees for Performance, Quality, and Nuclear Safety!
: In the nuclear industry, quality, safety, and risk management are fundamental requirements. To meet the industry’s regulatory requirements, Ecia implements and oversees policies related to ISO 9001, ISO 19443, Qualianor, and Qualifoudre.
These certifications attest to our ability to operate in demanding environments while ensuring regulatory compliance, the protection of people, and the reliability of the services we provide. They also demonstrate our commitment to continuous improvement, nuclear safety, and operational excellence.
Key Figures
Nearly 20 years in business
Expertise recognized by our clients
More than 200 employees
A team of specialists and experts dedicated to your projects
7 locations in France
A nationwide presence close to our customers
A nationwide presence close to our customers: Bagnols-sur-Cèze (30), Bollène (84), Venelles (13), Lyon (69), Salives (21), Cherbourg (50), and Île-de-France (92)
Your future at a design firm specializing in nuclear engineering! Are you up for the adventure?
If you’re driven by technical challenges and want to grow in an environment where expertise, performance, and safety are at the heart of everything you do, we have a future to build together.
We offer you the opportunity to work on ambitious projects, learn alongside recognized specialists, and contribute to innovative solutions that support major players in the civil and military nuclear sectors.
At Ecia, your career will truly come into its own thanks to personalized support, ongoing training, and a stimulating environment that fosters skill development, the sharing of expertise, and technical excellence.
Ready to take on this challenge?
Apply now and be part of the adventure!
Do you have a need? Let's talk about it!
Do you have a need? Let's talk about it!
