A Personal Computer-Based Simulation-and-Control-Integrated Platform for 10-MW High-Temperature Gas-Cooled Reactor

2004 ◽  
Vol 145 (2) ◽  
pp. 189-203 ◽  
Author(s):  
Lei Shi ◽  
Haibin Liu ◽  
Xiaojing Yang ◽  
Zuying Gao ◽  
Yujie Dong ◽  
...  
Keyword(s):  
High Temperature ◽  
Personal Computer ◽  
Integrated Platform ◽  
Computer Based ◽  
Simulation And Control ◽  
And Control ◽  
High Temperature Gas

scholarly journals Development of High Temperature Gas Sensor Technology

1997 ◽  
Author(s):  
Gary W. Hunter ◽  
Liang-Yu Chen ◽  
Philip G. Neudeck ◽  
Dak Knight ◽  
C. C. Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Materials Science ◽  
Point Contact ◽  
Sensor Technology ◽  
Monitoring And Control ◽  
Engine Emissions ◽  
Stage Of Development ◽  
Contact Sensor ◽  
And Control ◽  
High Temperature Gas

The measurement of engine emissions is important for their monitoring and control. However, the ability to measure these emissions in-situ is limited. We are developing a family of high temperature gas sensors which are intended to operate in harsh environments such as those in an engine. The development of these sensors is based on progress in two types of technology: 1) The development of SiC-based semiconductor technology. 2) Improvements in micromachining and microfabricarion technology. These technologies are being used to develop point-contact sensors to measure gases which are important in emission control especially hydrogen, hydrocarbons, nitrogen oxides, and oxygen. The purpose of this paper is to discuss the development of this point-contact sensor technology. The detection of each type of gas involves its own challenges in the fields of materials science and fabrication technology. Of particular importance is sensor sensitivity, selectivity, and stability in long-term, high temperature operation. An overview is presented of each sensor type with an evaluation of its stage of development. It is concluded that this technology has significant potential for use in engine applications but further development is necessary.

Guidance for Developing Fuel Design Limit of High Temperature Gas-Cooled Reactor

2020 ◽  
Author(s):  
Hiroyuki Sato ◽  
Takeshi Aoki ◽  
Hirofumi Ohashi
Keyword(s):  
High Temperature ◽  
Development Process ◽  
Evaluation Criteria ◽  
Research Association ◽  
Safety Requirements ◽  
Fuel Design ◽  
Physical Barriers ◽  
Test Reactor ◽  
And Control ◽  
High Temperature Gas

Abstract The present study aims to propose a guidance that facilitates to determine fuel design limits of commercial HTGR on the basis of licensing experience through the high temperature engineering test reactor (HTTR) construction. The guidance consists of a set of figure of merits (FOMs) and a process to determine their evaluation criteria. The FOMs are firstly identified to satisfy safety requirements and a basic concept of safety guides established in a special committee under the Atomic Energy Society of Japan with the support of the Research Association of High Temperature Gas Cooled Reactor Plant. The development process for the evaluation criteria takes into account not only the top-level regulatory criteria but also design dependent constraints including the performance of fission product containment in physical barriers other than fuel, fuel qualification criteria, design specifications of an instrumentation and control system. As a result, a comprehensive and transparent procedure for designers of prismatic-type commercial HTGR has been developed. This paper provides details on the development procedure for fuel design limit. methods to derive the limits are also presented.

scholarly journals V&V Methods Used in the Development of FPGA-based I&C Systems for HTR-10

2021 ◽  
Vol 2048 (1) ◽  
pp. 012041
Author(s):  
R Maerani ◽  
TJ Suryono ◽  
S Santoso ◽  
JC Jung
Keyword(s):  
High Temperature ◽  
Nuclear Power ◽  
System Development ◽  
International Standards ◽  
Regulatory Body ◽  
New Development ◽  
Field Programmable ◽  
Computer Based ◽  
And Control ◽  
System Designs

Abstract Currently, in few countries, there have been many projects related to the development of Field Programmable Gate Array (FPGA)-based Instrumentation and control (I&C) system designs for their nuclear power plant (NPP), whether for modernization or the new development of NPPs. Indonesia already develops a study related to High Temperature Gas Cooled Reactor as the generation IV for NPPs type for these few years with a specific type which is High Temperature Reactor–10 MW (HTR-10). Since the FPGA-based technology is new in the field, and both the international standards and guidance, from national and international has not defined provisions this issue, therefore verification and validation (V&V) activities for this HTR-10 are mandatory to be included in the design life cycle of I&C system development to get license approval from the national regulatory body. The FPGA-based system needs concentration both in hardware and software development, but commonly only software-related standards that usually included in the design and V&V in the previous computer-based I&C system. Therefore, in this study the V&V plan needs to be developed to state the methods to be required regarding the correctness of the applications of FPGA based I&C system. By arranging this V&V method, we will see whether they are easily applicable to actual systems, had the result to reach the requirement to have reliability, availability, maintainability and safety aspects, and has shortened and easier V&V step than computer-based I&C system. From the results of this study, it can be seen that the results of the method used for V&V between Programmable Logic Controller (PLC)-based and FPGA are almost the same because both have almost the same requirements, especially in software design. Some testing is not mandatory for FPGA-based because of the reduced system complexity. The use of FPGA can shorten the V&V process which can also reduce costs.

Magnetic Field Analysis of Active Magnetic Bearings for Helium Blower of HTR-PM

2013 ◽  
Author(s):  
Leilei Guo ◽  
Guojun Yang ◽  
Zhengang Shi ◽  
Xingnan Liu ◽  
Suyuan Yu
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
Magnetic Bearings ◽  
Field Analysis ◽  
Active Magnetic Bearings ◽  
Rotating Speed ◽  
Magnetic Field Analysis ◽  
Environment Temperature ◽  
And Control ◽  
High Temperature Gas

High-temperature gas-cooled reactor-pebble bed module (HTR-PM) of China, based on the technology and experience of the 10MW high-temperature gas-cooled reactor (HTR-10), is currently in the design and experiment phase. The helium blower is the key equipment in the first loop of the HTR-PM. Active magnetic bearings (AMBs) are replacing ordinary bearings as the perfect sustaining assembly for the helium blower because they have several advantages: they are free of contact, do not require lubrication, are not subject to the contamination of wear, have endurance, and control performance very well. So the AMB is the appropriate supporting assembly. The rotor’s length of the helium blower is about 3.3 m, its weight is about 4000 kg and the rotating speed is 4000 r/min. The maximal radial load of the upper AMB or the lower AMB is about 1950kg, and the maximal axial load is about 4500kg. So the axial and radial AMBs must have enough carrying capacity to support the rotor. It is difficult to design the AMB in limited space. Many factors may restrict the AMB design, for example, clearance between AMB and rotor, electric current, and environment temperature, etc. In this paper, design of magnetic field will be analyzed. Heat loss of AMB will be discussed. The designing scheme of magnetic field will offer the important theoretical base for AMB design of the helium blower of HTR-PM.

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