CERN is hiring: “Project Controller” & “RP Technician”

– « Project Controller » (deadline 16.08.23)

– « Radiation Protection Technician » (deadline 27.08.23)

The application process takes place entirely on-line. (Detailed instructions will be found in the portal)

CIEMAT has opened a position (3 years) for graduate/young PhDs in the framework of our R&D associated to transmutation and linked with our joint activities with Spanish National Company for Waste Management (ENRESA).

The work will consist of the simulation of nuclear reactors (mainly Generation IV reactors, small modular reactors – SMR and subcritical systems) using the Monte Carlo technique, and the simulation of experiments and neutron detectors. Besides, as usual, the propagation of the uncertainty to reactivity safety parameters will be analysed.

In our case, the main contributor is nuclear data. With this, nuclear data needs will be detected for advanced reactor concepts.

For more information: (https://www.ciemat.es/cargarAplicacionOfertaEmpleo.do?identificador=2243,

or contact Francisco Alvarez – francisco.alvarez@ciemat.es, Daniel Cano – daniel.cano@ciemat.es)

IRSN is looking for several Post-Docs in various nuclear fields.

All advertised positions are potentially eligible for a MSCA application (further information on this point is to be discussed with the contact person appointed in each description)

Postdoctoral position : CFD analysis of flow deviation induced by ballooned nuclear fuel rods

Workplace
Cadarache Center – Provence-Alpes-Côte d’Azur – France
Main scientific field
Fluid mechanics
Keywords
CFD, multiphase phase flow, heat transfer

The candidate will work for the Incident and Accident Management Service (SEMIA). The activities conducted in this department covers especially the assessment of design basis accidents in nuclear power plants. This includes LOss of Coolant Accidents (LOCA) that correspond to transients induced by a pipe break in the primary loop of the plant.

Study of the development of ISR concrete pathology, interpretation through the notions of durability indicators and scale effect applied to the international ODOBA project

Thematics: Civil engineering; Materials; Engineering Sciences
Keywords: Internal Sulfate Reaction (ISR), experimental data interpretation, sustainability indicators, scale effect, international ODOBA project
Place: Cadarache (13), France
Availability date: As soon as possible (May 2023)
Duration: 18 months

The proposed work is part of the research conducted at the Institute for Radiation Protection and Nuclear Safety (IRSN) concerning the ageing of concrete in nuclear power plant containments (extension of the operating life of nuclear reactors) in the framework of the international ODOBA project. This project focuses on internal swelling reactions (ISR) at the scale of massive blocks. They are of two types: the Internal Sulfate Reaction (ISR) and the Alkali-Aggregate Reaction (AAR). These reactions can lead to the degradation of the mechanical properties of the concrete but especially to cracking, potentially resulting in a loss of efficiency of the third containment barrier for radioactive materials.

Monte-Carlo propagation of nuclear data uncertainties in depletion calculations using Random sampling methods

Location:
IRSN Fontenay-aux-Roses, France
Unit:
Laboratoire de Neutronique (LN) – Service de Neutronique et des risques de Criticité (SNC)
Duration:
1 year
Starting date:
June 2023

The objective of this work is to carry out a comparative study, between VESTA and TRIPOLI 4®, of the nuclear data uncertainty obtained on quantities of interest in depletion calculations after a first comparative study between the two codes on these same quantities of interest k inf and isotopic compositions of criticality safety nuclides.

Domain Decomposition for Next-Generation Monte-Carlo Neutron Transport Code TRIPOLI-5

Start in: As soon as possible

Workplace: Fontenay-aux-roses,

France Duration: 18 months

Monte Carlo burnup calculations are actually memory-bound, and the solution to this limitation lies in some sort of Domain Decomposition in order to distribute the memory requirements of a single simulation over several compute nodes. The problem of domain decomposition does not present the same challenges nor does it use the same approaches for deterministic methods and for Monte-Carlo simulations. A number of domain-decomposition methods adapted to neutron transport criticality calculations have been suggested in the literature, and a few codes, both production and research type, have tested some implementations.

Simulation aux grandes échelles de la déflagration de mélanges H2/air/vapeur d’eau ; application aux expériences ENACCEF2

Lieu de travail : Cadarache – Bouche du Rhône – France

Champ scientifique principal : Applied Mathematics, Fluid Mechanics

Key words: Large Eddy Simulation, numerical scheme

Fonction: Education and research

The work proposed in the framework of this post-doctorate is divided into two stages.
Firstly, it consists in extending the space discretization for LES applications on unstructured meshes. This type of development is a difficult problem. In particular, it seems that it is necessary to choose the richest possible approximations of the pressure, while preserving stability (discrete inf-sup condition). Such work has been proposed in the literature for Crouzeix-Raviart finite elements, for the simulation of incompressible flows. The objective is to extend these ideas in two directions:
       a) adaptation to compressible flows, within the framework of schemes developed over the last ten years by the Institut de Mathématique de Marseille (I2M) and the IRSN,
       b) extension to discretization in space of the same type (i.e. with velocity degrees of freedom associated with faces) but based on cells of different shape: hexahedra (Rannacher-Turek elements), prisms and pyramids.

In a second step, the validation of these schemes will be done on hydrogen, air and water vapour deflagration tests in a flame acceleration tube (ENACCEF2 experiments, performed at the ICARE Laboratory of the CNRS in Orléans). The simulations should make it possible to characterise the turbulence in the flow and the structure of the flame front.

The University of Sheffield are currently recruiting a Research Associate in Fusion Thermal Hydraulics.

Position: Research Associate in Fusion Thermal Hydraulics

University of Sheffield – Faculty of Engineering – Department of Mechanical Engineering

Fire Safety Engineer (ref. HSE-FRS-OP)

The CERN Fire and Rescue Service, part of the Occupational Health and Safety and Environmental Protection (HSE) Unit is looking for a fire safety engineer working in tight collaboration with the CERN Fire Safety Engineering Team to enhance fire safety throughout the Organization that has already achieved a high level.
You will be involved in ensuring that existing and new premises comply with fire and emergency standards and grant CERN personnel and visitors, the surrounding environment and CERN assets the appropriate levels of safety.
You will work in a multidisciplinary and diverse team of firefighters, fire officers, engineers and physicists.
The skills and/or technologies you should have and/or know:
• Industrial safety, fire safety, fire prevention, fire risk assessment;
• International/Swiss/French fire regulations;
• Volunteer fire officer/firefighter in a local or industrial FRS will be an asset.
Area of Interest
Health, Safety and Environment

Maintenance Technician (ref. HSE-RP-IL)

After an on-the-job training period you will participate in performing a wide variety of activities related to radiation protection instrumentation, electronics and control systems.
These include the following forms of maintenance activities;

• Preventative: from routine monthly operations to intensive 5 yearly calibration campaigns;
• Breakdown: provide support to first line interventions teams to resolve onsite issues with a goal of minimising equipment down times and avoiding impact to accelerator or physics operations whilst maintaining safety integrity;
• Corrective: aid in the deployment of software and hardware upgrades across all sites;
• CMMS management.

You will also prepare documentation for the design, operation and maintenance of systems ensuring all maintenance documentation is kept up to date. Working onsite, you will provide support to project teams for the installation, cabling, commissioning and acceptance of new radiation protection systems.
The skills and/or technologies you should have and/or know:

• Instrumentation and control or equipment maintenance or low voltage electricity or electro-mechanics;
• Fault-finding methodologies and their application;
• Maintenance management and its associated tools.

Area of Interest
Electrical or Electronics Engineering

Opportunity at JRC Karlsruhe

Code: 2023-KRU-S4001-FGIV-022714 – KARLSRUHE

FG IV Scientist – Exploratory Research Project – Exploitation of Critical rAw materials REcovered from nuclear FUEL wastes (CAREFUEL)

Deadline: 08/05/2023 23:59 Brussels time

JRC: Recruitment of grantholder, trainees, graduate trainees & auxiliary contract staff (europa.eu)

The courses are the following:

Advanced reactor Physics (CTU) 17.10.2023 – 20.10.2023

Fundamentals of Isotope Production (UNIPI) 06.11.2023 – 09.11.2023

Workshop on Criticality Safety Calculations (STU) 27.11.2023 – 30.11.2023

Fundamentals of Neutron Detection (JSI) 04.12.2023 – 07.12.2023

You can APPLY HERE

Some highlights of the position

IAEA wish for: we are looking for an enthusiastic and motivated chemist who has preferentially experience with chemical separation mostly with actinides and also working with mass spectrometry.

Assets: experience working with radioisotopes, having experience in using radiometry measurement techniques (alpha, gamma), working in accredited laboratory and clean laboratory experience are assets.

What can IAEA offer? A professional position with emphasize on technical tasks and working in an international team with highly trained professionals at the IAEA Safeguards Environmental Sample Laboratory in Seibersdorf. The work is mostly carried out in the Clean Laboratory with trace level of U, Pu, Am, and Th bearing samples. The incumbent would be responsible for the sample preparation like digestion, separation and purification of cotton swipes, but also of soil and biota samples, screening with ICP MS, and reporting results for customers. Additionally, would be responsible for maintaining the laboratory equipment, doing procurement, method development, and quality control.

Deadline of application: 23^rd April 2023

JOB DESCRIPTION HERE

LINK TO JOB APPLICATION HERE