MIT- CASL EDUCATION ACTIVITIES

Transcription

1 MIT- CASL EDUCATION ACTIVITIES CASL Education Team Mujid Kazimi & Koroush Shirvan April Massachusetts Institute of Technology NSE Nuclear Science & Engineering at MIT science : systems : society

2 2 Overview of Education Program MIT CASL Courses Material Degradation 2012, 2013, 2015 GTRF/CFD 2013, 2015 LWR Design BISON/VERA Tools 2014-Present Student Activities Path Forward

3 3 Material Degradation Course by Ron Ballinger Environmental Degradation and Materials Aging in Nuclear Systems: Implementation of Modeling and Simulation of Environmental Degradation Concepts at the Graduate and Undergraduate Level 2013: augmented to add additional science (electrochemistry) and modeling and simulation modules

4 4 Material Degradation Course by Ron Ballinger 2015 course is currently underway The student reception is positive. The course material is available through share point. Material is also used for MIT professional courses: MIT Reactor Safety Course Reactor Technology for Utility Executives Student Reception # of Students 8 13 Stimulated Interest Defined Goals Well-organized Presentations Overall Ratings

5 NSE Nuclear Science & Engineering at MIT science : systems : society 5 State-of-the-art modeling for CASL Challenge Problem GTRF Emilio Baglietto, NSE 5

6 6 Objective 1. The purpose of this course is to implement an effective method to convert into teaching the unique modeling experience developed in the CASL MNM- TH and AMA activities, as well as previously gained GTRF related insights through modeling activities. 2. The project was implemented as a module of a new MIT course: "Applied Computational Fluid Dynamics and Heat Transfer offered in Spring 2013 and

7 Approach 7 The course provides a comprehensive description of the GTRF phenomenon, and will review the commonly adopted practices in fuel design for GTRF analysis. The students were introduced to the use of CASL tools and with their application to complex unsteady flow phenomena, and will have a chance to practice their newly learned techniques in a dedicated course project. # of Students Defined Goals Well-organized Presentations Overall Rating

8 Example Slides (132 Total Slides) 8 Koroush Shirvan Material available on share point that documents LWR design guidance and NRC rules, and available software to evaluate design margins. # of Students Stimulated Interest Helped me Learn Overall Rating 4 (1 Response) 7 6 6

9 9 Core Design Analysis Methodology Core Nuclear Design Cross-section Generation Assembly Shuffling and core loading pattern Peaking factor control Economic Analysis Thermal Hydraulics DNB analysis Chemistry Plant CRUD intake estimations Fuel Performance Fuel and cladding thermo-mechanical behavior under irradiation Fuel rod structural analysis (includes vibration and overall assembly structure) Safety Analysis System wide transient simulation using coupled neutronic, thermal hydraulic and fuel performance analysis methods. Plant PRA Release of radioactive nuclide probability and core damage frequency

10 10 Tech Specs: Westinghouse Plants Use and Application Safety Limits Limiting Condition for Operation (LCO) Applicability Surveillance Requirement (SR) applicability Reactivity control systems Power Distribution Limits Instrumentation Reactor Coolant System (RCS) Emergency Core Cooling Systems (ECCS) Containment Systems Plant Systems Electrical Power Systems Refueling Operations. Design Features (site location Reactor core, fuel storage Administrative controls

11 11 Education Summit Involvement Attend CASL Education calls and meetings to organize the activities for the past three years Encourage both CASL and non-casl students to participate Requested to be involved with the ANFM CASL workshop 2014 Summit: Presented technical 3 hour presentation on BISON and Fuel performance (70+ slides) The material was recently approved by CASL export control team to be widely available ICAPP paper: Detailed comparison of BIOSN to FRAPCON Recently, we have been granted access to BISON-CASL

12 12 Fuel Performance with BISON Outline BISON Overview Prerequisite Fuel Performance Overview Oxide Fuel Pin Behavior Reactivity Initiating Accidents Metal Fuel Pin Behavior BISON Demonstration Conclusions Main References: Class notes < Karahan A MIT PhD Thesis < NUREG-CR-7022 < Shirvan K. paper ICAPP 14 <

13 13 Fuel Radial Power Evolution: High Fidelity Neutronics can help UO 2 (5% U 235 )

14 14 BISON Performance Assessment FRAPCON runtime is less than a second

15 15 Example Problems NRC has specific guidelines on cladding strain, stress, oxidation, plenum pressure, axial elongation and maximum fuel temperature. Students can simulate a 3D rod with a given power history to observe the evolution of these parameters toward NRC design limits. DOE has recently focused on accident tolerant fuels Students can perform modeling of ATF concepts within the BISON framework and evaluate the different thermo-mechanical response of the ATF concepts compared to traditional LWR fuel.

16 16 BISON vs. FRAPCON When deviating from Zircaloy, the underlying differences in the models utilized within each codes amplify. SiC Fuel Performance FRAPCON BISON Solid Design Max BOL T (K) Max EOL T (K) Max Plenum P (MPa) Max FGR (%) Time to Contact (days) No contact No Contact Max SiC Effective S (MPa)

17 17 Student Activities UROP positions (MIT Undergraduate programs) We have many students working on CASL related activities but not funded by CASL. 11 students have attended the MOOSE training in the last 3 years 8 Students (3 women) have gone to the CASL Summer workshops last two years This year 5 students (2 women) are planning to attend.

18 18 Path Forward Involve more undergraduates at MIT on CASL related work. This will naturally occur since the MIT UROP funds are being fully utilized. Work with the education committee to organize the 2.5 weeks CASL School Prepare 3-4 full days of course materials (current focus) Continue with the installation of VERA products on our machines. Push our export control friends to setup access for all the tools well before the CASL school. BISON without source code limits its usefulness.