ASNR - Autorité de sûreté nucléaire et de radioprotection

About the Company

Depuis le 1er janvier 2025, l'IRSN et l’ASN se sont réunis pour devenir l’Autorité de sûreté nucléaire et de radioprotection (ASNR), créée par la loi du 21 mai 2024 relative à l'organisation de la gouvernance de la sûreté nucléaire et de la radioprotection. Autorité administrative indépendante, l’ASNR assure, au nom de l’État, le contrôle des activités nucléaires civiles et de radioprotection en France. Elle exerce également les missions de recherche, d'expertise, de formation et d’information des publics dans les domaines de la sûreté nucléaire et de la radioprotection.

Listed Jobs

Company Name

ASNR - Autorité de sûreté nucléaire et de radioprotection

Job Title

STAGE : Sciences de la terre/sismologie / IA H/F

Job Description

**Job Title:** Internship in Earth Sciences, Seismology, and AI **Role Summary:** A regulatory authority focused on nuclear safety and radioprotection seeks a candidate to assess the feasibility of developing an AI tool for estimating seismic magnitudes from macroseismic intensities, leveraging historical data and modern AI techniques. **Expectations:** - Collect and format historical seismic data (pre-1970 archives + modern records) for AI model training. - Develop a simple AI architecture to predict magnitude from macroseismic intensity. - Validate the AI tool’s performance against traditional regression models. **Key Responsibilities:** - Clean, annotate, and structure archival and contemporary seismic intensity data. - Design, train, and test a basic AI model for magnitude estimation. - Compare AI outputs with established statistical methods (linear regression, nonlinear inversion) to evaluate accuracy and relevance. **Required Skills:** - Proficiency in data science/Machine Learning (Python preferred). - Foundational knowledge in seismology or Earth sciences. - Experience with statistical modeling and data preprocessing. - Understanding of macroseismic intensity scales and seismic hazard analysis. **Required Education & Certifications:** - Master’s degree in Data Science, AI, or Earth Sciences (M2 or equivalent). - Completed coursework in AI, data analytics, or seismology (preferable).

Fontenay-aux-roses, France

Remote

17-10-2025

Company Name

ASNR - Autorité de sûreté nucléaire et de radioprotection

Job Title

Stage BAC+4 Modélisation neutronique de RNR H/F

Job Description

**Job Title:** Neutron Modeling Internship for Fast Reactor Concepts **Role Summary:** Develop neutron models of Generation IV fast reactors (sodium and lead-cooled) using TRIPOLI-5 Monte Carlo code to analyze performance and validate simulation accuracy through international benchmarks. **Expectations:** Collaborate with software development teams to refine neutron modeling tools and support regulatory nuclear reactor evaluations. **Key Responsibilities:** - Create and execute TRIPOLI-5 simulations for LFR (NEA) and ESFR-SMART (Euratom) benchmarks. - Conduct multi-scale neutron analysis (pin, assembly, core levels) to compare reactor performance. - Validate results against benchmark participants' data. - Coordinate with developers to improve TRIPOLI-5 software tools. **Required Skills:** - Nuclear engineering or physics background. - Proficiency in neutron transport and reactor physics. - Experience with Monte Carlo simulation tools. - Python programming (preferred). **Required Education & Certifications:** Master’s first year or equivalent in engineering/nuclear sciences; specialization in nuclear engineering preferred.

Fontenay-aux-roses, France

Hybrid

17-10-2025

Company Name

ASNR - Autorité de sûreté nucléaire et de radioprotection

Job Title

Stage BAC+5 Recherche en science des matériaux H/F

Job Description

Job title: Research Internship – Materials Science (Master's Level) Role Summary: Conduct advanced thermal‑mechanical modeling of nuclear fuel pins in contact using FEM (ANSYS Mechanical) and compare results with the DRACCAR simulation platform. Perform sensitivity analyses, develop correlations for cladding heating, and evaluate the validity of DRACCAR simplifications. Expectations: - Deliver detailed finite element models of fuel pin configurations. - Validate and calibrate DRACCAR models against ANSYS results. - Identify key geometric and material parameters influencing thermal behavior. - Produce documentation and reports supporting R&D on nuclear fuel performance. Key Responsibilities: - Build and refine ANSYS Mechanical models of fuel pin assemblies, including contact with neighboring pins. - Translate configurations into DRACCAR inputs and run comparative studies. - Conduct parameter‑sensitivity and uncertainty analyses. - Analyze temperature gradients, heat transfer modes, and cladding swelling effects. - Collaborate with senior engineers, presenting findings and recommendations. Required Skills: - Proficiency in finite element analysis (ANSYS Mechanical). - Strong understanding of thermal‑mechanical behavior of nuclear fuel. - Experience with DRACCAR (or similar nuclear thermal‑hydraulic codes) preferred. - Ability to perform sensitivity studies and statistical analysis. - Basic programming in Python for data processing and automation. - Familiarity with thermohydraulics and two‑phase flow concepts advantageous. Required Education & Certifications: - Bachelor’s (Bac+4) or Master’s (Bac+5) degree in Energy, Thermal Engineering, Fluid Mechanics, Nuclear Engineering, Materials Science, or related field. No specific certifications required.

Saint-paul-lez-durance, France

Hybrid

21-10-2025

Company Name

ASNR - Autorité de sûreté nucléaire et de radioprotection

Job Title

Stage BAC+5 Adsorption de gaz iodés sur des adsorbants poreux H/F

Job Description

Job Title: B.S./M.S. Internship in Adsorption of Iodine Gases on Porous Adsorbants Role Summary: Research-focused internship to model and extend adsorption mechanisms of iodine gases (I₂, CH₃I) on modified porous materials for nuclear industry applications. Expectations: Master’s degree in chemical engineering, materials chemistry, or related fields with 5+ years of education/training (Bac+5 equivalent). Key Responsibilities: - Modify porous materials (e.g., activated carbon, MOFs) to enhance adsorption performance for I₂ and CH₃I. - Conduct physicochemical characterization (N₂ porosimetry, SEM/EDX, TGA, water adsorption isotherms) of materials pre- and post-modification. - Perform adsorption testing at multiple scales: - Liquid-phase I₂ adsorption (UV-Vis tracking). - Microbalance analysis of CH₃I adsorption isotherms. - Breakthrough curve experiments under varying temperature/relative humidity. - Validate and improve existing adsorption modeling code using experimental data, including effects of moisture and alternative porous supports. Required Skills: - Materials science expertise in porous media (zeolites, activated carbon, MOFs). -Adsorption mechanisms and measurement techniques (batch, isotherms, breakthrough curves). -Experimental design and data analysis. -Reasearch methodology (prior lab or internship experience preferred). -Technical writing and presentation skills (English/French). Required Education & Certifications: - Master’s degree (B.Sc.+5) in chemical engineering, materials science, inorganic chemistry, or adsorption/catalysis. -Strong academic background in adsorption processes and material synthesis/characterization techniques.

Saclay, France

Hybrid

21-10-2025