核动力工程

Features and Innovatives of China Advanced Research Reactor （CARR） Design

YUAN Lu-zheng, KE Guo-tu, JIN Hua-jin, DAI Zhang-nian, XU Han-ming, LI Yan-shui

2006, 27(S2): 1-5.

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Abstract:
China Advanced Research Reactor（CARR）is a multipurpose and high performance research reactor.The design features,on adopting advanced technologies and design philosophies,layout of overall system and components,establishing the operation mode and applications of the reactor,have been sum up in this paper.These distinguishing features reflected the advanced merit,safety performance,economics and innovatives of CARR and the present level of research reactor design in China.The construction and operation of CARR will certainly make contributions to provide an important scientific research platform for the development of China Institute of Atomic Energy（CIAE）.

Description of Application Design and Utilization Programming for CARR

KE Guo-tu, SHI Lei, SHI Yong-kang, YUAN Lu-zheng, HUANG Dao-li

2006, 27(S2): 6-10.

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CARR is a multipurpose research reactor with high performance.The inverse neutron trap structure,which is convenient for the layout of horizontal neutron beam and vertical irradiation tube,is applied.The comprehensive platform of CARR covers the following research and experiment field:neutron scattering（NS）experiment,radioisotopes（RIs）production,fuel and material irradiation test,neutron transmutation doping of silicon（NTD）,neutron activation analysis（NAA）,neutron radiography（NRG）,boron neutron capture therapy（BNCT）and personnel training. This paper describes briefly the application,physics design,structure design and the associated equipment and system of CARR.

Design Validation Test of Fuel Assembly of China Advanced Research Reactor

ZHANG Jian-wei, SONG Li-xin, KANG Ya-lun, ZHANG Ai-min

2006, 27(S2): 11-13,20.

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CARR fuel assemblies are manufactured and used for the first time in China.To ensure the integrity and the safety of the fuel assembly under CARR operation conditions,CARR Project Department arranged a series of design validation tests,such as the tests for structure stability,flow-inducedvibration（FIV）,critical velocity,heat circulation,in-pile irradiation and etc.The test results indicated the design and manufacture of CARR fuel assembly are reasonable,and the fuel assembly will be stable and safe under CARR operation condition.

Control Measures for Engineering Design Quality Assurance of CARR

TANG Guo-jing, ZHANG Xiang-hong, CHENG Duo-yun, MA Qi-heng, KE Guo-tu

2006, 27(S2): 14-16.

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The engineering design of CARR is with complicated technology and interface.By enhancing the leaderships and clarifying the responsibility of every designer,all the quality assurance activities are effectively controlled by detailed process documents and operation documents in terms of technology and management.It is shown that the organizational structure we adopted is appropriate,the responsibility and authority are well defined to meet the design requirements and the corresponding duties are fulfilled.The quality assurance system is in conformance with the laws and regulations,and can meet the needs of CARR engineering design.It provides an effective guidance for the success of CARR engineering design.

Document Management in CARR Design

HONG Xia, ZHANG Ying-qi, HUANG Li-yun, ZHANG Peng-fei, SONG Jing-he

2006, 27(S2): 17-20.

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Document management of engineering projects is very important,since it has a direct influence on the quality,process and investment cost of the engineering projects.This paper briefs on the establishment of document management system,the formulation of document management regulations,and the implementation of management measures for various documents in CARR engineering design.

Process Control of CARR Engineering Design

YAN Jun-ying, ZHOU Li-xiao, CHEN Hui-qiang, LUO Chun-ying, KE Guo-tu

2006, 27(S2): 21-24.

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Process control takes an important part in the engineering design.This paper briefs on the organizational structure and the characteristics of CARR engineering design management,withemphasis on the establishment of process management system and the process control measures we have taken in the CARR engineering design project.

Standardization in China Advanced Research Reactor Design

GAO Dong-mei, DAI Zhang-nian, MA Qi-heng, CHEN Hui-qiang, KE Guo-tu

2006, 27(S2): 25-28.

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A set of criterion system was set up for the design of CARR,to insure that the design satisfies the present requirements on the nuclear safety level and adopts the world advanced technology.In this article,the collection,compilation and supervision of the criteria of CARR are introduced.Some concerned issues for the selection and implement are proposed.

Safety Design of China Advanced Research Reactor

LIU Tian-cai, YANG Zhang-jiang, LIU Xing-min, JIN Hua-jin, YUAN Lu-zheng

2006, 27(S2): 29-31,64.

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China Advanced Research Reactor（CARR）is of tank-in-pool type,cooled and moderated by light water and reflected by heavy water.The rated nuclear power is 60 MW.It consists of 21 plate-type fuel assemblies.The fuel meat is made of U₃Si₂-ALx dispersion and the cladding is made.of 6061 aluminum alloys.The reactor has a small core with high heat flux and high coolant velocity.All these characteristics result in the difficulties in the safety design of CARR.Many measures have been taken in CARR design in order to assure the safety of the reactor.For instance,ATWS mitigation system,adequate main pump inertia, enough natural circulation ability,passive flapping valves for natural circulation and ECCS（Emergency Core Cooling System）supported by UPS are adopted at the same time.The accidents analysis results indicate that CARR is with high inherent safety and the safety measures are effective.

Flow Blockage Accident Analysis for China Advanced Research Reactor

LIU Tian-cai, JIN Hua-jin, YUAN Lu-zheng

2006, 27(S2): 32-35,44.

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Flow blockage accident often happens in research reactors with plate-type fuel assemblies.In this paper,the flow blockage accident of China Advanced Research Reactor（CARR）is analyzed on the assumption that the inlet of one assembly is blocked when the reactor is operated at the rated power.The reactivity,reactor power,pressure,flowrate,temperature that is changed with time in the accident is calculated with Relap5/Scdapsim\Mod3.2.The effect of the blocked standard fuel assembly on the ambient fuel assemblies is also given.The results show that the blocked assembly will melt but it does not cause the burnout of the rest assemblies.It proves that this type of accident can be controlled within the limit by the safety measures for CARR.

Whole Core Diffusion Calculation for China Advanced Research Reactor

LU Zheng, SUN Zhi-yong, SHEN Feng, XIAO Shi-gang, KE Guo-tu

2006, 27(S2): 36-40,72.

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The neutronics analysis of China Advanced Research Reactor is carried out with the diffusion method by using the whole core module in this paper.Based on the critical calculation of thecore of different periods,the reactivity and the neutron flux and power distribution from the 1^stcycle to the 3^rdcycle are given. The burnup calculation of CARR is done in the indirect way.In the calculation,the burnup distribution of CARR is given and the fraction of the fission productions is obtained.Meanwhile the reactivity of the fission poison is analyzed in this paper.

Nuclear Design for CARR Control Rods

SUN Zhi-yong, SHEN Feng, LU Zheng, KE Guo-tu, XIAO Shi-gang

2006, 27(S2): 41-44.

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China Advanced Research Reactor（CARR）is a new multi-purpose research reactor with high performance.The calculation of nuclear specialties of control rods is one of the most important and difficult parts.Monte Carlo method is used in this paper,and all the results have been adopted in machine design and manufacture of control rods.

Thermal Analysis for CARR Hot Water Layer

YANG Zhang-jiang, LIU Tian-cai, LIU Xing-min

2006, 27(S2): 45-49.

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Hot Water Layer（HWL）of China Advanced Research Reactor（CARR）is a layer of hot water on the top of the reactor pool.It prevents the lower water containing radioactive material reach the surface of the pool through convection,so as to drop down the radiation level of the reactor hall.This paper calculated the heating power required to construct the HWL with experience relations,and analyzed the flow and temperature field of the reactor pool using computational fluid dynamics software CFX.The results imply that the heating power rate of CARR HWL is 120kW,the HWL is formed in the top of the reactor pool,but uneven,and the average thickness of HWL is about 1.8m.

Study on Neutronics Scheme for Cold Neutron Source in China Advanced Research Reactor

SHEN Feng, YUAN Lu-zheng, KE Guo-tu, LU Zheng, SUN Zhi-yong

2006, 27(S2): 50-53.

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Cold Neutron Source（CNS）is one of the important systems through which China Advanced Research Reactor（CARR）could be used as important application platform of Neutron Scattering Experiment. This paper establishes the calculation program and methods to analyze the nuclear heating and gain factor. Many factors have bean calculated and optimized for the CNS in CARR and the neutronics scheme is decided. The results show that better gain factor can be approached with relatively low nuclear heating for moderator cell,which is accorded with the characteristics of CARR CNS and is a new crescent cell configuration in the world

Thermal-Dynamic Research of Hydrogen Thermal-Siphon Circulation for Cold Neutron Source in China Advanced Research Reactor

SHEN Feng, JIA Zhan-li, ZHAO Guang-hui, YUAN Lu-zheng

2006, 27(S2): 54-59,78.

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A new cooling scheme on moderator cell for Cold Neutron Source（CNS）in China Advanced Research Reactor（CARR）is brought forward,which is considered to resolve the thermal-dynamic difficulty of CARR CNS such as the high heat flux from cell wall to liquid hydrogen owing to high nuclear power of CARR and low enrichment of Uranium,the special operation model of off-CNS while reactor is on.The simplified model is founded from the cooling scheme and the calculation program is compiled.Then,the capacity of heat exchanging is calculated.The equation,which implies the self-regulation characteristics of CARR CNS,is derived and established.The self-regulation analysis has been carded out for CARR CNS by analysis of this equation.The result shows that this cooling scheme could overcome the difficulties in high heat flux and operation model of CARR CNS,and is endowed with self-regulation characteristics.

Piping Stress Analysis and Evaluation of Secondary Cooling Water System in CARR

DAI Shou-tong, WANG Jun, SONG Jing-he, FAN Yue-rong, ZHANG Zhan-li, KE Guo-tu, DAI Zhang-nian

2006, 27(S2): 60-64.

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This paper performed the piping stress analysis and calculation of the secondary cooling water system in CARR using the software PIPSTRESS,according to the different characteristics of the piping and the connected equipments.Different measures are taken to optimize the positions,types and directions of the supports and hangers,and the appropriate values of the piping stress and nozzle loads are gained.The results show the piping stress analysis and evaluation of the secondary cooling water system satisfied the PIPSTRESS codes.

Design Characteristics of China Advanced Research Reactor （CARR） Loops

HUANG Xing-rong, HAN Hai-fen, ZHANG Jin-shan, ZHUANG Yi, SHI Jia-juan

2006, 27(S2): 65-68.

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The research reactor design is different from that of nuclear plant,and each research reactor has its special characteristics because it has to meet different demands.China Advanced Research Reactor （CARR）is cooled by light water and moderated by heavy water.Eighteen loops are designed for CARR.In these 4oops,Reactor Cooling System（RCS）and Heavy Water System（HWS）are important.This paper introduced the CARR loop design characteristics as a whole.

Design and Analysis of Coolant System of CARR

ZHANG Jin-shan, HUANG Xing-rong, LI Qing

2006, 27(S2): 69-72.

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The reactor coolant system（RCS）is one of the most important systems of China Advanced Research Reactor（CARR）,which is used to cool the core when the reactor is running.The important problems are introduced in this paper,such as the functions,arts and crafts design,equipment selection,and also the analysis of operation and security arc introduced.

Design of Main Circulating Pump Parameters of CARR

ZHANG Jin-shan, HAN Hai-fen, ZHUANG Yi

2006, 27(S2): 73-75.

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The Main circulating pumps are the most important equipments of Reactor Cooling System （RCS）of China Advanced Research Reactor（CARR）.This paper introduces the operation model of the pumps and presents the method and process of designing the parameters of the pumps,such as flow rate, pump head,and NPSH.

Optimization Design of CARR Heavy Water Cooling System

HAN Hai-fen, JIANG Bai-hua, ZHANG Jin-shan, HUANG Xing-rong, LI Jun-de

2006, 27(S2): 76-78.

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China Advanced Research Reactor（CARR）is cooled by light water and moderated by heavy water.This paper introduces optimization design of CARR heavy water cooling system after the completion of the feasibility research report,including the optimization of the system process flow and the equipment.

Analysis of Cooling Measures for ECCS at CARR Shutdown

ZHUANG Yi, HUANG Xing-rong, JIANG Bai-hua, ZHANG Jin-shan, SHI Jia-juan

2006, 27(S2): 79-83.

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How to cool down the reactor core after shutdown is one of the most important safety problems for CARR.ECCS of CARR is a high capability and credibility system with two purposes:One is to cool the pool water in the normal condition and the other is to cool the core in emergency.These designs,including no manpower interruption and automatic matching,will widen the method and accumulate the experiences for domestic research reactors and also testify that CARR is safe,economical and advanced. This paper first introduced the function,main parameters and flow chart of the CARR ECCS,considering the nuclear safety code and guide.Based on the real condition of CARR,this paper also analyzed the typical accidents and the shutdown cooling of the ECCS,and demonstrated how the ECCS carded out the passive cooling at normal and accidental shutdown.

Application of Plate Heat Exchanger in CARR

HAN Hai-fen, ZHANG Jin-shan, JIANG Bai-hua, ZHUANG Yi

2006, 27(S2): 84-85,100.

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This paper introduces the selection and design process of the heavy water heat exchanger and primary heat exchanger in CARR.The Plate Heat Exchanger（PHE）is more safe and more economic in contrast with the glove tube heat exchanger.The application of PHE in HWS provides the reference value for future research reactor design.

Design and Analysis of Purification System for CARR

LI Qing, ZHAO Guang-hui, LI Jun-de, ZHUANG Yi

2006, 27(S2): 86-88.

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The purification system,as a part of a reactor,is very important for safe operation of the reactor.The characteristics of the purification systems,which are primary water,heavy water,pool water and hot water layer,is introduced in this paper.These characteristics include the technology,the equipment,the control,the measuring instrument,the layout and the operation,and etc.

Design Characteristics of Horizontal Channels in CARR

FAN Yue-rong, LANG Rui-feng, SHI Chen-lei, ZHANG Zhan-li, DAI Zhang-nian, SUN Lin-zhi, DAI Shou-tong

2006, 27(S2): 89-92.

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This paper introduces the applications of the horizontal channels in CARR and their arrangement in the reactor complex,structure design and design characteristics.

Design of Heavy Water Tank and Guiding Tank of CARR

SHI Chen-lei, LANG Rui-feng, FAN Yue-rong, DAI Zhang-nian, ZHANG Zhan-li, SUN Lin-zhi

2006, 27(S2): 93-96,110.

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The design thoughts and methods for heavy water tank and Guiding tank of China Advanced Research Reactor（CARR）are introduced in this paper.The structures of the devices are described in detail, and the difficulties met in the design are analyzed.Based on the design ＆ manufacture of the CARR core flow-induced vibration test model and the test results,the parametrical modeling and dummy assembling of the devices are carried out with three-dimensional mechanical design software,to improve and optimize the design,and thus to ensure the accuracy of the device interfaces,and to resolve the design difficulties.At present,the construction design is completed,and the devices are under manufacture.

Design Challenge for Decay Tank and Reactor Pool Steel Liner of CARR

ZHANG Zhan-li, FAN Yue-rong, DAI Shou-tong, SHI Chen-lei, LANG Rui-feng, SUN Lin-zhi, DAI Zhang-nian

2006, 27(S2): 97-100.

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The decay tank and the reactor pool steel liner are one of the key equipments of CARR,this paper illustrates the measures to solve the difficulties of the welding,the transportation and the manufacturing of the large-scale and thin shell equipments during the design of the decay tank and the reactor pool steel liner.

Design Optimization of Material Irradiation Monitor Device for CARR Core Vessel

SHI Chen-lei, SUN Zhi-yong, YANG Zhang-jiang

2006, 27(S2): 101-105.

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This paper introduced the material irradiation monitor device for CARR core vessel.The device’s design was optimized through nuclear physical calculation and analysis of several thermal-hydraulic models.The construction design has been accomplished.

Design of Conveyance System for China Advanced Research Reactor

WU Wen-guang, CHEN Feng, WANG Wei-xing

2006, 27(S2): 106-110.

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This paper introduces the function,the process flow and the classification of the facilities of conveyance system for China Advanced Research Reactor（CARR）.Also it structurally describes the important facilities such as fuel handling machine,double station handling tool,bevel pipe alleyway and spent fuel dry storage facility.The fuel handling machine,one of the important facilities of this system,has past the ex-factory test,which indicates that it can meet the function requirements and its design is proper.

General Design of Thermo-Parameters Measurement System for CARR

ZAN Huai-qi, LI Hua, WANG Qiang, LI Song, LI Chuan-xia, QIAO Chen-yang, XIE Zi-qiang

2006, 27(S2): 111-114,121.

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The general technical scheme of thermo-parameters measurement system for China Advanced Research Reactor（CARR）is given on the basis of the introduction of design challenges and innovatives, considering the options of differential pressure transmitter,gas analyzer,temperature sensor,and so on.Finally,it gives the general function of the system,the system structure,the requirements on construction and installation,and the regulations for check and acceptance.

Selection about Model of Differential Pressure/Pressure Transmitter in CARR

LI Chuan-xia, LI Hua, ZAN Huai-qi, XIE Zi-qiang

2006, 27(S2): 115-117.

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In the paper,several series of differential pressure/pressure transmitters are introduced.They are 1151capacitance series differential pressure/pressure transmitter,1151smart series differential pressure/pressure transmitter,3051smart series differential pressure/pressure transmitter,and resonance smart series differential pressure/pressure transmitter.We select one from them according to the actual situation of China Advanced Research Reactor after we compared their performance.

Leakage Measurement System in CARR

ZAN Huai-qi, LI Hua, WANG Qiang, LI Chuan-xia, LI Song, XIE Zi-qiang

2006, 27(S2): 118-121.

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The high reliability design of the heat engineering in-process measurement system is essential for the system overall design.This paper introduced the function,the form,the construction and measuring point for the leakage monitoring system of CARP,（China Advanced Research Reactor）.The leakage measuring system of CARR decreases the systematic false alarm,and improves the authenticity of the systematic survey.

Overview of CARR Power Supply System

ZHANG Wen-lei, LI Zhen-yi, LI Yan, WU Bing-xiang, HUO Jun-jie

2006, 27(S2): 122-125.

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CARR power supply system mainly consists of such subsystems as medium voltage,low voltage,direct current,standby,and emergency power supply systems.The general feature,main function ＆ design principle are described in brief and the constitution,performance,characteristic ＆ function of subsystems are also expatiated in detail in this paper.The engineering design of CARR power supply system follows the associative requirement of nuclear safety code and industrial standard,and can provide the operation system function and security function of system.

Application of Intelligent Relay in CARR Medium Voltage Power Supply System

ZHANG Wen-lei, LI Zhen-yi, CHEN Li, WU Bingxiang

2006, 27(S2): 126-128,165.

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Series of intelligent relays are applied in China Advanced Research Reactor（CARR）medium voltage power supply system to improve the reliability,safety and intelligence of this system.The constitution,performance,characteristics and function of intelligent relays are also expatiated in this paper.CARR medium voltage power supply system realizes the digitalization monitoring of power supply system,and the transducers,cables and protective relay device can be eliminated,to assure the economy,reliability and advance of the whole medium voltage power supply system.

Design of Standby Power System of CARR

LI Yan, CHEN Li, LI Zhen-yi, XUE Sui-zhi

2006, 27(S2): 129-132.

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The standby power supply system is one of the guarantees of the safe operation of China Advanced Research Reactor.The two diesel generators will start automatically to safety supply the power when the out-site power supply is lost.

Design of Emergency Power Supply System for CARR

XUE Sui-zhi, LI Zhen-yi, JIN Hua-jin

2006, 27(S2): 133-136,158.

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This paper presents the function and component of the emergency power supply system for China Advanced Research Reactor（CARR）,1E class battery set,determination of THE rated power of UPS, aging test and seismic test of 1E class switchboard.The emergency power supply system is one of the guarantees of safe operation of CARR.It can operate continuously for 2 hours to maintain the normal operation of the emergency core cooling system when the out-site power supply is lost.

Design of DC Auxiliary Power System of CARR

ZHANG Wen-lei, LI Zhen-yi, LI Yan, CHEN Li

2006, 27(S2): 137-139.

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The CARR DC power supply system is designed to provide the power supply of secondary circuit for CARR medium power supply system.This paper mainly introduces the constitution,performance and function of the CARR DC power system,and shows the reliability,safety and advantages of this system.

Realization of Incoming and Coupling Breaker of Low-Voltage Power Supply System for China Advanced Research Reactor

LI Zhen-yi, ZHANG Wen-lei, LI Yan, QIAO Chen-yang, WU Bing-xiang

2006, 27(S2): 140-142.

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The paper introduces the design method using truth table to realize interlock circuit between incoming and coupling breaker of low-voltage power supply system for China Advanced Research Reactor （CARR）.The computer simulating and acceptance test in the manufactory proves that the electric circuit runs reliably.

Design of Ventilation and Air Conditioning Systems for Main Control Room for China Advanced Research Reactor

LI Jian-min, LI Cai-juan

2006, 27(S2): 143-145.

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This paper introduces the function,the operation condition and the system setting of the habitability air-conditioning system of main control room for China Advanced Research Reactor,and analyzes the cooling load computing of the main control room.The result shows that this air-conditioning system can not only meet the requirements on temperature and humidity in the main control room under the normal operation conditions,but also the requirements on the habitability for the operators under the accident conditions.

Design of CARR Protection System

ZHANG Ming-kui, YANG Zi-jue, JIN Hua-jin, ZENG Hai, XIAO Chen, XU Qiguo, SONG Guo-liang

2006, 27(S2): 146-149,162.

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The digital technology was adopted in the development of recator protection system（RPS）for China Advanced Research Reactor（CARR）.The CARR RPS performs the safe function for the reactor, including protection of the reactor and the monitoring after accident.The paper introduces the design of CARR RPS and technology characteristics of RPS.

Design of CARR Digitalization Monitoring and Control System

XU Qiguo, ZENG Hai, ZHANG Ming-kui, JIN Hua-jin, SONG Yun-peng, MAO Huan

2006, 27(S2): 150-154.

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The constitution and function of Digital Monitoring and Control System of China Advanced Research Reactor（CARR）is introduced in this paper.Reliable hardware ＆ software platform,redundant method in communication network,I/O main control unit,data sever and fault diagnosis and monitoring technical are adopted in the system.At present,factory design phase and check ＆ accept have completed,and the phase for installation and commissioning will come soon.

Design of CARR Neutron Measuring System

ZHANG Ming-kui, XU Qi-guo, ZENG Hai, XIAO Chen, JIN Hua-jin, SONG Guo-liang

2006, 27(S2): 155-158.

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The neutron measuring system is an important part of CARR I＆C system.It monitors the neutron fluence out of the reactor core and provides the signals to the RPS,ATWS and Power Regulating systems.The paper introduces the design of CARR neutron measuring system and describe thes structure, detector,measure device and technology characteristics of the system.

Full Digital I＆C System of CARR

XU Qi-guo, ZHANG Ming-kui, ZENG Hai, JIN Hua-jin, SONG Yun-peng, MAO Huan

2006, 27(S2): 159-162.

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CARR（China Advanced Research Reactor）is a safe,reliable and multi-purpose research reactor with high performance.CARR I＆C systems include Digital Reactor Protection System,Digital Mitigation System for ATWS（Anticipate Transient Without Scram）,Nuclear Instrumentation System, Operating and Monitoring System and Power Regulation System with advanced full digital technology. This paper makes a brief description on the constitution and function of the control system of CARR.

Design of Mitigation System for CARR ATWS

ZHANG Ming-kui, XIAO Chen, YANG Zi-jue, JIN Hua-jin, ZENG Hai, XU Qi-guo, SONG Guo-liang

2006, 27(S2): 163-165.

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In order to ensure the safety of reactor,CARR（China Advanced Research Reactor）set up the Mitigation system for Anticipate Transient Without Scram（ATWS）besides reactor protection system（RPS）. The paper introduced the function,components and technology characteristics of CARR ATWS system.The system adopted digital technology,and the experimentation has testified its reliability for the need of CARR.

Design of Digital Control System for Ventilation System of CARR

MAO Huan, ZENG Hai, XU Qi-guo

2006, 27(S2): 166-168,171.

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The control system for ventilation system of CARR is an important part of I＆C system of CARR.It uses a distribution control mode with centralized management,which is a Distribution Control System（DCS）.R uses PID module to achieve automatically control.It has achieved a high level in roboticized and reliability.The paper introduces the function and constitution and technology characteristics of the system.

Computer Control of CARR Heavy Water Concentrate System

CHEN Li, ZHANG Wen-lei, JIN Hua-jin

2006, 27(S2): 169-171.

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The paper introduces the micro-computer monitoring system that uses the doable programmable logical controller as a core.The system achieves the functions of real-time collecting and control data of heavy water concentrate and operating equipment,in order to improve the safety and veracity of the power supply system.

2006, 27(S2): 172-172.

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2006 Vol. 27, No. S2