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2019　Experiments for Materials related to Decommissioning A

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Academic unit or major
Graduate major in Nuclear Engineering
Instructor(s)
Yoshida Katsumi  Hubarevich Hanna  Takasu Hiroki 
Class Format
    
Media-enhanced courses
Day/Period(Room No.)
Mon5-8(原講571,, 先導原子力研実験室, North №2, 5F-571)  
Group
-
Course number
NCL.D401
Credits
1
Academic year
2019
Offered quarter
3Q
Syllabus updated
2019/9/25
Lecture notes updated
-
Language used
English
Access Index

Course description and aims

Students learn the basic principles of physical properties evaluation for solid materials required to decommissioning of nuclear reactors using the text. Students also learn fundamentals of handling non-sealed radioisotopes, contamination tests and decontamination, exposure prevention of exposure etc. Students use a cutting machine, a polishing machine and a mortar in a hood and a glove box to prepare the evaluation radioactive samples. Students identify the crystalline phases and calculate the lattice parameters of the radioactive materials with XRD, and measure their thermal conductivity by laser-flash method. In addition, tensile test for zircaloy used as fuel cladding tube material and other metallic materials is conducted under hydrothermal condition, and the effect of environment on mechanical properties of materials is learned. Furthermore, simulated fuel debris is prepared, and their crystalline phases are identified with XRD and their hardness is measured with hardness tester, and students understand the properties of fuels debris.

Student learning outcomes

Students learn evaluation methods for solid materials required to decommissioning of nuclear reactors by conducting experiments using radioactive ceramic samples. Students also learn how to handle radioactive materials, decontaminate, and evaluate personal dosage. (The content of Experiments for Materials related to Decommissioning A is the same as A and B. A student can register either A or B)

Keywords

Experiment, Radioactive materials, Radiation control area, Protection of radiation exposure, Properties of solids, Thermal property, Mechanical property, Radiation damage

Competencies that will be developed

✔ Specialist skills Intercultural skills Communication skills Critical thinking skills ✔ Practical and/or problem-solving skills

Class flow

1) In the first lecture, fundamentals of controlled area, handling radioactive isotopes, evaluation of materials properties, and outline of this experiment are explained.
2) Experiments are conducted according to the textbook distributed in this experiment.
3) Attendance of students is checked in every class. Tardiness is not permitted.
4) Participants are divided into several groups in the experiment, and the experiment is conducted under the guidance of instructors and TAs.
5) After the completion of this experimental course, each student must prepare and submit a report.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Fundamentals of controlled area and handling RI, basic principles of physical properties evaluation, outline of the experiment, preparation of the experiment Understand the fundamentals of controlled area and handling RI, basic principles of physical properties evaluation
Class 2 Cold-run experiment (XRD, Thermal diffusivity measurement), Cutting, polishing and crushing non-radioative samples, Decontamination, Smear survey Understand the necessity and the importance of cold-run, how to decontaminate and how to evaluate the surface contamination density by smear survey
Class 3 Cutting, polishing and crushing radioactive samples, XRD, Thermal diffusivity measurement, Decontamination, Smear survey (1) Understand how to handle radioactive materials and the effect of environment on mechanical properties of materials
Class 4 Cutting, polishing and crushing radioactive samples, XRD, Thermal diffusivity measurement, Decontamination, Smear survey (2) Understand how to handle radioactive materials and the effect of environment on mechanical properties of materials
Class 5 Preparation of simulated fuel debris, XRD, Hardness measurement Understand the properties of simulated fuel debris
Class 6 Tensile test under hydrothermal condition Understand the environment of nuclear reactor core and the corrosion of materials
Class 7 Microstructural observation of the samples after tensile test under hydrothermal condition, XRD Understand how to observe the microstructure of the samples and how to identify the crystalline phases of the samples
Class 8 Evaluation of personal dosage (external and internal exposures) Understand how to evaluate personal dosage, Prepare and submit the report

Textbook(s)

Text is provided at the first class.

Reference books, course materials, etc.

Shown in the text.

Assessment criteria and methods

1) Student's course score are based on pre-experimental report, attitude for experiments and final report.
2) Full attendance and completion of all experiments are compulsory.

Related courses

  • NCL.N403 ： Nuclear Materials and Structures

Prerequisites (i.e., required knowledge, skills, courses, etc.)

You need registration as radiation works (category A) because this experiment are conducted in the controlled area, and you handle non-sealed radioactive materials.

Contact information (e-mail and phone)    Notice : Please replace from "[at]" to "@"(half-width character).

Katsumi Yoshida　k-yoshida[at]lane.iir.titech.ac.jp

Office hours

Contact by e-mail in advance to schedule an appointment.

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