ECAR-6583 Outer Shield Stress and Performance Analysis
Calculations were performed to verify that the Outer Shield Assembly will support the weight of the Water Extended Polyester (WEP) shielding and the lead shielding. It was also shown that the Outer Shield can withstand the forces of a seismic event and will remain stable. The results of the calculations were performed in accordance with […]
ECAR-6564 MARVEL Project Primary Coolant System ASME BPVC Section III Division 5 Design by Analysis
This report demonstrates that the MARVEL Reactor Primary Coolant Boundary (herein referred to as the Primary Coolant System, or PCS) is designed to meet ASME BPVC Section III Division 5 [5] elevated temperature service design-by-analysis criteria. The analysis approach that delineates division of responsibilities to meet project objectives is discussed herein. In short, Design and […]
ECAR-6585 MARVEL Core Support Structure Analysis
Idaho National Laboratory (INL) is developing a small microreactor to produce electrical power utilizing a small nuclear core and stirling engines for power output under the Microreactor Application Research Validation and Evaluation (MARVEL) program. The MARVEL Reactor (Figure 1) will be installed in the Transient Reactor Test (TREAT) Facility. Walsh Engineering Services, PC (WES) has […]
ECAR-6584 MARVEL Reactor Support Frame Analysis
Idaho National Laboratory (INL) is developing a small microreactor to produce electrical power utilizing a small nuclear core and Stirling engines for power output under the Microreactor Application Research Validation and Evaluation (MARVEL) program. The MARVEL Reactor will be installed in the Transient Reactor Test (TREAT) Facility. Walsh Engineering Services, PC (WES) has contracted with […]
ECAR-6589 Reflector Support Structure Analysis
The MARVEL microreactor consists of five main systems: MRS (MARVEL Reactor Structure), PGS (Power Generation System), FCS (Fuel Core System), RCS (Reactivity Control System), and ICS (Instrument Control System). The RSS (Reflector Control System) is a sub system of the MRS which contains the upper and lower reflector support plates which support and locate the […]
ECAR-7552 MARVEL CIA Inner Housing External Pressure Analysis
The Central Insurance Absorber (CIA) inner housing provides a secondary containment function for the MARVEL Reactor. The objective of this analysis is to demonstrate that the inner housing meets the requirements of ASME B&PV Section 111, Division 5 Class B pressure vessel code.
ECAR-6574 MARVEL Guard Vessel System FEA and ASME Analysis
The INL is seeking to build the first microreactor in the United States, and the first advanced reactor in over 50 years. With the Microreactor Applications Research, Validation & EvaLuation (MARVEL) Project, this microreactor should be operational within a significantly faster timescale than has ever been seen in the nuclear industry. It uses two passive-convection […]
ECAR-7228 MARVEL Control Drum Actuator Analysis
This ECAR’s objective is to analyze the MARVEL Control Drum (CD) system with a particular emphasis on the primary components influencing the actuator’s rotational motion behavior. The CD actuator is of primary interest. The CD’s inertia, bearing friction, and any compliances in the load path is required to provide a comprehensive actuator assessment. The said […]
ECAR-7210 Steady-state Thermo-mechanical Analysis of the MARVEL Fuel Bundle
This document reports the steady-state thermal-hydraulic and static mechanical analyses of the MARVEL micro-reactor core. The objective of this work is to investigate whether fuel-to-fuel contact could occur due to the thermal deformation of the fuel cladding during the normal operation and to assess the resulting impact on the peak cladding temperatures (PCT) if contact […]
RELAP5-3D THERMAL-HYDRAULIC ANALYSIS OF MARVEL MICROREACTOR – FINAL DESIGN
This document reports the thermal hydraulic analyses results for the MARVEL microreactor, final design, including normal operation, operational transients and a set of very-low probability transients caused by accident conditions. The ultimate scope of this document is to demonstrate the MARVEL microreactor thermal hydraulic performances and its inherent safety. First, the list of the operational […]