Recruitment for a Senior Post Doctoral Fellow
(Fixed Term Researcher)
(Nuclear Safety Research Center)

1. 1. Number of employees

      Researcher 1 person

   2. Research field

      Research on advanced model development for evaluating thermal-hydraulic phenomena during accident in light water reactor.
      (Summary)
      The research on thermal hydraulic phenomena occurred in nuclear reactor and reactor containment vessel during accident including severe accident is performed to establish the evaluation model and method for understanding accident process and their influences. The developed models are used to evaluate the effectiveness of accident management measures for prevention and mitigation of these accidents.
      As main subjects, the applicant performs numerical simulation to improve models and methods for evaluating reactor thermal hydraulic on reactor system response, core heat transfer, hydrogen behavior, over temperature damage of a reactor containment vessel, source term, and other related phenomena. All these researches are carried out based on experimental data obtained from the large scale test facilities and the related separate effect test facilities owned by JAEA.
      The numerical simulations are mainly conducted by using lumped parameters (LP) code and computational fluid dynamics (CFD) code. Regarding the former, in addition to using existing code like RELAP, the applicant is involved in development and operation of domestic system code that is currently developed in Japan. Regarding the latter, the applicant implement analyses of turbulent flow, multi-phase flow, combustion including chemical reactions, aerosol behavior by using finite volume method, discrete element method, and other methods. For the comparison with the conventional CFD, the advanced method such as immersed boundary method is also subject to be studied to model complex structures and boundary.
      The applicant will also conduct technical development work related to advanced measurement techniques for multi-phase flow used in the above-mentioned experiments. As examples, it includes the techniques of measurement and data processing algorithms such as ultrasonic sensor for liquid film thickness, and wire mesh sensor and electrical impedance tomography for two-dimensional void fraction distribution. The applicant will also be trying to making use of the machine learning theory to derive maximum information from the obtained experimental data. It will be applied to image reconstruction processing, inference of the missing data or optimized model parameters, and optimum structure design.

   3. Division assigned to (tentative)

      Reactor Safety Research Division
      Nuclear Safety Research Center
      Sector of Nuclear Safety Research and Emergency Perparedness
      Japan Atomic Energy Agency

   4. Place of employment (tentative)

      Japan Atomic Energy Agency,
      2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan

   5. Salary, etc…

      Commensurate salary with the applicant’s work experience, Social Insurance, Commutation allowance, Institute family residence and bachelor’s dormitory are available.

   6. Terms of employment

      Contract term: One year
      (The contract term can be extended up to 5 years upon annual review of research achievements.)
      Should you achieve outstanding results during your temporary employment, you could be offered a position as permanent staff.

   7. Trial employment period

      6 months

   8. Holiday

      Weekend (Saturday and Sunday), National holidays, Year-end holidays, Paid holidays

   9. Qualification requirements

      (1) Having a Ph.D. degree in engineering or physics. In principle, work experience as a full-time employment researcher (at least for one year) is required.

      (2) Technical requirements

      • the experience to develop large-scale codes using object-oriented program in order to carry out the work regarding LP code.
      • the ability to understand and modify large-scale object-oriented program in order to add and improve necessary functions to CFD code with use of OpenFOAM as a main platform code. And furthermore, the skills of mesh generation and the empirical knowledge of about Verification and Validation (V&V) are also required as common technical basis.
      • the sufficient knowledge regarding not only the fundamental engineering such as signal processing and statistical analysis, but also physics (fluid dynamics, elastic wave, acoustic wave, electromagnetism, etc.) and numerical analysis (finite volume method, finite differential method, finite element method, inverse problem analysis, etc.) to develop the advance measurement technology.

   10. Necessary documents and application procedures

       (1) Curriculum vitae (use JAEA form) (PDF, WORD)

       (2) Document of the results at major (use JAEA form) (PDF, WORD)

       (3) Research career history (with A4 free format)

       (4) List of publications in which your name is underlined, and Copies of major papers

       (5) Photocopy of PhD.diploma

       (6) One or two letter(s) of recommendation written by senior researcher who well knows your research and personality.
       * Including one from the current supervisor is better.
       * Letter(s) written by a JAEA employee will not be accepted.
       * Submit by any of the following way;
       

       1. By mail from applicant after recommender signed and sealed.
          Copy or opened one is not accepted.
       2. By mail from recommender to Personnel Section directly.
       3. By Email from recommender to Personnel
          Section(jinji-saiyo@jaea.go.jp) directly. Attach the signed letter in PDF format.

       (7) Consent for the Treatment of Personal Data*(PDF, WORD)
       * Residents only in any one of EEA member countries, namely a member country of the EU, and Iceland, Liechtenstein or Norway are requested to submit this form.

   11. Deadline for submission of application

       May, 8, 2019 (Deadline for receipt. Japan Standard time.)

   12. Address for submission of application

       Personnel Section,
       Personnel Department,
       Japan Atomic Energy Agency,
       2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
       (Mark “Application documents for recruitment of a Senior Post Doctoral Fellow” in red on the envelope)

       [ Address for submission of recommendation letter ]
       Personnel Section,
       Personnel Department,
       Japan Atomic Energy Agency,
       2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
       (Write applicant name on the envelope.)
       or
       E-mail: jinji-saiyogenkaken11@jaea.go.jp
       (Write applicant name in subject.)
       *Only letter of recommendation will be accepted by Email.

   13. Application screening

       Examinees will be decided based on the review of application documents. The screening result will be notified by e-mail or by writing. Application documents will not be returned.

   14. Recruitment examination

       (1) Examination of research achievements (presentation using PowerPoint file or etc. and Q&A)

       (2) Interview

   15. Date of recruitment examination (planned)

       May, 2019

   16. Place for Recruitment Examination (planned)

       Nuclear Science Research Institute,
       Japan Atomic Energy Agency,
       2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
       17. Result of Recruitment Examination
       The result will be announced by a letter after the recruitment examination.

   17. Result of Recruitment Examination

       The result will be announced by a letter after the recruitment examination.

   18. Date of adoption (tentatively)

       July 1, 2019

   19. Travel Expenses

       We will refund your travel expenses for the recruitment examination according to the JAEA’s administrative rules.
       Detailed information will be provided the candidates.

   20. Reference

       Keiji Okada
       Personnel Section,
       Personnel Department,
       Japan Atomic Energy Agency
       TEL:+81-29-282-6030 FAX:+82-29-282-5819
       E-Mail: jinji-saiyogenkaken11@jaea.go.jp

       (Reference related to the recruitment field)
       Yasuteru Sibamoro, Group Leader,
       Reactor Safety Research Division
       Nuclear Safety Research Center
       Sector of Nuclear Safety Research and Emergency Perparedness
       Japan Atomic Energy Agency
       TEL: +81-29- 282-5263 FAX: +81-29-282-6728
       E-Mail: jinji-saiyogenkaken11@jaea.go.jp

   21. Points to note

       (1) Candidate who pass the recruitment examination is supposed to submit medical certification in English within 6 months (including height, weight, eyesight, urinalysis, chest X-ray).

       (2) Candidates without Japanese nationality are required to have the certificate of eligibility by the date of adoption in order to obtain a work permit in Japan..

   22. Treatment of personal information

       Submitted personal information will be used for recruitment. Personal information of employee will be used for employment control. Other personal information will be scrapped 1 year later.