Modular High Temperature Gas-Cooled Reactor Safety Basis and Approach

Modular High Temperature Gas-Cooled Reactor Safety Basis and Approach PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
Various international efforts are underway to assess the safety of advanced nuclear reactor designs. For example, the International Atomic Energy Agency has recently held its first Consultancy Meeting on a new cooperative research program on high temperature gas-cooled reactor (HTGR) safety. Furthermore, the Generation IV International Forum Reactor Safety Working Group has recently developed a methodology, called the Integrated Safety Assessment Methodology, for use in Generation IV advanced reactor technology development, design, and design review. A risk and safety assessment white paper is under development with respect to the Very High Temperature Reactor to pilot the Integrated Safety Assessment Methodology and to demonstrate its validity and feasibility. To support such efforts, this information paper on the modular HTGR safety basis and approach has been prepared. The paper provides a summary level introduction to HTGR history, public safety objectives, inherent and passive safety features, radionuclide release barriers, functional safety approach, and risk-informed safety approach. The information in this paper is intended to further the understanding of the modular HTGR safety approach. The paper gives those involved in the assessment of advanced reactor designs an opportunity to assess an advanced design that has already received extensive review by regulatory authorities and to judge the utility of recently proposed new methods for advanced reactor safety assessment such as the Integrated Safety Assessment Methodology.

Modular High Temperature Gas-Cooled Reactor Safety Basis and Approach

Modular High Temperature Gas-Cooled Reactor Safety Basis and Approach PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
Various international efforts are underway to assess the safety of advanced nuclear reactor designs. For example, the International Atomic Energy Agency has recently held its first Consultancy Meeting on a new cooperative research program on high temperature gas-cooled reactor (HTGR) safety. Furthermore, the Generation IV International Forum Reactor Safety Working Group has recently developed a methodology, called the Integrated Safety Assessment Methodology, for use in Generation IV advanced reactor technology development, design, and design review. A risk and safety assessment white paper is under development with respect to the Very High Temperature Reactor to pilot the Integrated Safety Assessment Methodology and to demonstrate its validity and feasibility. To support such efforts, this information paper on the modular HTGR safety basis and approach has been prepared. The paper provides a summary level introduction to HTGR history, public safety objectives, inherent and passive safety features, radionuclide release barriers, functional safety approach, and risk-informed safety approach. The information in this paper is intended to further the understanding of the modular HTGR safety approach. The paper gives those involved in the assessment of advanced reactor designs an opportunity to assess an advanced design that has already received extensive review by regulatory authorities and to judge the utility of recently proposed new methods for advanced reactor safety assessment such as the Integrated Safety Assessment Methodology.

Modular HTGR Safety Basis and Approach

Modular HTGR Safety Basis and Approach PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The Next Generation Nuclear Plant (NGNP) will be a licensed commercial high temperature gas-cooled reactor (HTGR) capable of producing electricity and/or high temperature process heat for industrial markets supporting a range of end-user applications. The NGNP Project has adopted the 10 CFR 52 Combined License (COL) process, as recommended in the NGNP Licensing Strategy - A Report to Congress, dated August 2008, as the foundation for the NGNP licensing strategy [DOE/NRC 2008]. Nuclear Regulatory Commission (NRC) licensing of the NGNP plant utilizing this process will demonstrate the efficacy for licensing future HTGRs for commercial industrial applications. This information paper is one in a series of submittals that address key generic issues of the priority licensing topics as part of the process for establishing HTGR regulatory requirements. This information paper provides a summary level introduction to HTGR history, public safety objectives, inherent and passive safety features, radionuclide release barriers, functional safety approach, and risk-informed safety approach. The information in this paper is intended to further the understanding of the modular HTGR safety approach with the NRC staff and public stakeholders. The NGNP project does not expect to receive comments on this information paper because other white papers are addressing key generic issues of the priority licensing topics in greater detail.

High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research

High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research PDF Author:
Publisher:
ISBN:
Category : Gas cooled reactors
Languages : en
Pages : 40

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Book Description


Operator Role in the Modular High-Temperature Gas-Cooled Reactor's Safety Approach

Operator Role in the Modular High-Temperature Gas-Cooled Reactor's Safety Approach PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 2

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Book Description
This paper summarizes the approach of the Standard Modular High-Temperature Gas-Cooled Reactor (MHTGR) program to determine the role of the operator, discusses the safety role of the operator, and reviews the safety role of the operator with respect to the NRC Advanced Reactor Policy. 4 refs.

High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research Quarterly Progress Report

High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research Quarterly Progress Report PDF Author:
Publisher:
ISBN:
Category : Gas cooled reactors
Languages : en
Pages : 48

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Book Description


The Passive Safety Characteristics of Modular High Temperature Gas-cooled Reactor Fuel Elements

The Passive Safety Characteristics of Modular High Temperature Gas-cooled Reactor Fuel Elements PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
High-Temperature Gas-Cooled Reactors (HTGR) in both the US and West Germany use an all-ceramic, coated fuel particle to retain fission products. Data from irradiation, postirradiation examinations and postirradiation heating experiments are used to study the performance capabilities of the fuel particles. The experimental results from fission product release tests with HTGR fuel are discussed. These data are used for development of predictive fuel performance models for purposes of design, licensing, and risk analyses. During off normal events, where temperatures may reach up to 1600°C, the data show that no significant radionuclide releases from the fuel will occur.

High-temperature Gas-cooled Reactor Safety-reliability Program Plan

High-temperature Gas-cooled Reactor Safety-reliability Program Plan PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The purpose of this document is to present a safety plan as part of an overall program plan for the design and development of the High Temperature Gas-Cooled Reactor (HTGR). This plan is intended to establish a logical framework for identifying the technology necessary to demonstrate that the requisite degree of public risk safety can be achieved economically. This plan provides a coherent system safety approach together with goals and success criterion as part of a unifying strategy for licensing a lead reactor plant in the near term. It is intended to provide guidance to program participants involved in producing a technology base for the HTGR that is fully responsive to safety consideration in the design, evaluation, licensing, public acceptance, and economic optimization of reactor systems.

Advances in High Temperature Gas Cooled Reactor Fuel Technology

Advances in High Temperature Gas Cooled Reactor Fuel Technology PDF Author: International Atomic Energy Agency
Publisher:
ISBN: 9789201253101
Category : Business & Economics
Languages : en
Pages : 639

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Book Description
This publication reports on the results of a coordinated research project on advances in high temperature gas cooled reactor (HTGR) fuel technology and describes the findings of research activities on coated particle developments. These comprise two specific benchmark exercises with the application of HTGR fuel performance and fission product release codes, which helped compare the quality and validity of the computer models against experimental data. The project participants also examined techniques for fuel characterization and advanced quality assessment/quality control. The key exercise included a round-robin experimental study on the measurements of fuel kernel and particle coating properties of recent Korean, South African and US coated particle productions applying the respective qualification measures of each participating Member State. The summary report documents the results and conclusions achieved by the project and underlines the added value to contemporary knowledge on HTGR fuel.

Draft Preapplication Safety Evaluation Report for the Modular High-temperature Gas-cooled Reactor

Draft Preapplication Safety Evaluation Report for the Modular High-temperature Gas-cooled Reactor PDF Author: P. M. Williams
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages :

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Book Description


Safety and Licensing of MHTGR (Modular High Temperature Gas Cooled Reactor).

Safety and Licensing of MHTGR (Modular High Temperature Gas Cooled Reactor). PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The Modular High Temperature Gas Cooled Reactor (MHTGR) design meets stringent top-level regulatory and user safety requirements that require that the normal and off-normal operation of the plant not disturb the public's day-to-day activities. Quantitative, top-level regulatory criteria have been specified from US NRC and EPA sources to guide the design. The user/utility group has further specified that these criteria be met at the plant boundary. The focus of the safety approach has then been centered on retaining the radionuclide inventory within the fuel by removing core heat, controlling chemical attack, and by controlling heat generation. The MHTGR is shown to passively meet the stringent requirements with margin. No operator action is required and the plant is insensitive to operator error.