核动力工程

Development of Fuel Management Code for Aqueous Homogeneous Reactors

WANG Liangzi, YAO Dong, WANG Kan

2011, 32(2): 1-5.

Abstract(51) PDF(0)

Abstract:
Fuel Management Code for Aqueous Homogeneous Reactors（FMCAHR） is developed based on the Monte Carlo transport method.FMCAHR has the ability of doing resonance treatment,searching for critical control rods height,and calculating the thermal hydraulic parameters,bubble volume fraction and burn-up.The ...

Solution of Multiplying Binary Stochastic Neutron Transport Equation in One Dimensional Spherical Geometry

LIU Qingjie, WU Hongchun, CAO Liangzhi

2011, 32(2): 6-11.

Abstract(44) PDF(0)

Abstract:
A statistical transport equation is presented in this paper to obtain the ensemble average k_eff for the binary stochastic media with random fissile pellets.Combined method of statistics and deterministics is proposed to directly solve the multiplying binary stochastic problem in 1-D spherical geomet...

Analysis and Improvements of Module Incidental Interference Faults of Water Level Control System Pressurize NPP

HU Ping, ZHAO Fuyu, QUAN Yan, JIANG Botao

2011, 32(2): 12-15,29.

Abstract(75) PDF(1)

Abstract:
In Daya Bay nuclear power plant,there have been many times that the module used to value the water level outputs a small pulse interference when the pressurizer water level control system is in operation,and the interference exists only in analog storage operation module,which can directly impact th...

Dynamic Model of Helium Turbine Cycle System

JIE Heng, WANG Jie

2011, 32(2): 16-19.

Abstract(42) PDF(0)

Abstract:
The one-dimension flow and heat transfer models are built to simulate the components of helium turbine system,including the helium turbine model,compressor model,heat exchanger model,valve model,pipe model and shaft velocity model.The transient simulation code is established in MATLAB.The accident o...

Calculation Verification of Startup Method for Density Lock Based on PID Control

CHEN Wei, YAN Changqi, GU Haifeng

2011, 32(2): 20-24,80.

Abstract(39) PDF(0)

Abstract:
For the Passive Residual Heat Removal System,basing on the self-equivalence startup process,and adding pump controlling system,the startup method for density lock based on PID control system is advanced,that is,after the valve in PRHRS opening,the pump speed is controlled basing on the temperature c...

Effect of Performance of Zr-Y Alloy Target on Thin Film Deposition Technology

PAN Qianfu, LIU Chaohong, JIANG Mingzhong, YIN Changgeng

2011, 32(2): 25-29.

Abstract(40) PDF(0)

Abstract:
Yttria-stabilized zirconia（YSZ） films are synthesized on corrosion resistant plates by pulsed bias arc ion plating.The arc starting performance and the stability of thin film deposition is explored by improving the uniformity and compactibility of Zr-Y alloy target.The property of Zr-Y alloy target ...

Study on Characterization of Interaction Layer of U-Mo/Al-2Si

LIU Yunming, YIN Changgeng, SUN Zhanglong, CHEN Jiangang

2011, 32(2): 30-34.

Abstract(33) PDF(0)

Abstract:
U-Mo Alloy fuel is the most promising LEU fuel that used for research and test reactors.In this paper,the diffusion and reaction behavior of U-Mo/Al-2Si is studied with the hot-pressing diffusion-couple method.The experiment is carried out in a vacuum furnace for 550～570℃ at 5～21h.The result shows t...

Preparation and Performance of Radiation Shielding Functional Aggregate Based on High Barium of Sludge

DING Qingjun, HUANG Xiulin, SUN Hua, XU Ke, YANG Kun

2011, 32(2): 35-38.

Abstract(37) PDF(0)

Abstract:
The high barium of sludge has been made into aggregate with low dissolution rate,high strength by high temperature calcinations;the form of existence of element barium after its melted inside the aggregate has been analyzed by using XRD and SEM techniques;the linear attenuation coefficients has been...

Evaluation of Vibration and Vibration Fatigue Life for Small Bore Pipe in Nuclear Power Plants

WANG Zhaoxi, XUE Fei, GONG Mingxiang, TI Wenxin, LIN Lei, LIU Peng

2011, 32(2): 39-43.

Abstract(27) PDF(0)

Abstract:
The assessment method of the steady state vibration and vibration fatigue life of the small bore pipe in the supporting system of the nuclear power plants is proposed according to the ASME-OM3 and EDF evaluation methods.The GGR supporting pipe system vibration is evaluated with this method.The evalu...

Seismic Analysis on Integral Reactor System with Large-Scale Three-Dimensional Finite Element Method

JIANG Naibin, ZANG Fenggang, ZHANG Limin, ZHANG Chuanyong

2011, 32(2): 44-47,58.

Abstract(39) PDF(0)

Abstract:
The seismic analysis on integral reactor system was performed with TSV code which is applicable for calculating the large-scale finite element model.Two different models were calculated respectively.Damping effect was considered in one model,and nonlinear contact in the other one.The number of freed...

Fracture Analysis for Pressure Pipe Wrapped with Carbon-Fiber Reinforced Composites

LIU Jun, YAN Bo, LU Yuechuan, SUN Yingxue, JIANG Naibin, CHANG Xueping

2011, 32(2): 48-52,115.

Abstract(53) PDF(0)

Abstract:
A coupled FEM/EFG numerical method is introduced to calculate the stress intensity factors（SIF） along the crack front of a cracked pressure pipe line wrapped with carbon-fiber reinforced composite material（CFRC）.Two types of crack shape,traverse through-wall crack and surface ellipse crack are consi...

Simulation of Thermal-Hydraulic Behavior in Tight Lattice Rod Bundle

YU Yiqi, GU Hanyang, YANG Yanhua, CHENG Xu, WANG Xiaojun

2011, 32(2): 53-58.

Abstract(42) PDF(1)

Abstract:
The turbulence air thermal-hydraulic behavior inside the center and wall channel in tight lattice bundles is investigated.The wall temperature,wall shear stress,bulk temperature,bulk velocity,turbulent kinetic energy and turbulent mixing rate are analyzed by comparing the computational results with ...

Study on Motive Characteristic of Sliding Bubble Near Wall in A Vertical Narrow Rectangular Channel

XU Jianjun, CHEN Bingde, WANG Xiaojun

2011, 32(2): 59-62,85.

Abstract(31) PDF(0)

Abstract:
Motive characteristic of sliding bubble is visually observed by wide side and narrow side of the narrow rectangular channel using high speed digital camera.The results show that the bubble departing from the nucleate site slides along the heated surface,the typical sliding bubble phenomenon for narr...

Enhancement of Pool Boiling Heat Transfer on Porous Surface Tube

LI Yong, YAN Changqi, SUN Licheng, LIU Jia

2011, 32(2): 63-67,90.

Abstract(52) PDF(0)

Abstract:
In this paper,the pool boiling heat transfer characteristics of a machined porous surface tube are investigated experimentally,considering the boiling operating condition of passive residual heat removal exchanger.The experiments have been carried out with high-pressure saturated steam condensation ...

Research on Pressure-Drop Type Instabilities Between Different Parallel Vertical Rifled Tubes at Lower Mass Velocity

DENG Zhian, LUO Yushan, WANG Haijun, CHEN Tingkuan, WU Yuan

2011, 32(2): 68-71,85.

Abstract(41) PDF(0)

Abstract:
An experimental study was carried out on the pressure-drop type instabilities of the two-phase flow of the parallel vertical rifled tube in the high-pressure vapor-water test loop.The comparision of the effects of two types of tubes on the two-phase flow instabilities have been conducted.The results...

Bubble Sliding Growth Phenomena and Mass Velocity and Heat Flux Effect on Sliding Bubble Growth

CHEN Deqi, PAN Liangming, YUAN Dewen

2011, 32(2): 72-75,136.

Abstract(37) PDF(0)

Abstract:
A visual experiment is carried out with water as working fluid at higher system pressure to investigate the bubble growth in vertical narrow channel in this paper.It is found that the bubble growth is significantly restrained with the increasing of system pressure,resulting in obviously decrease in ...

Experiment on Geysering Phenomena in Heating System

QI Zhanfei, TONG Lili, CAO Xuewu

2011, 32(2): 76-80.

Abstract(54) PDF(1)

Abstract:
Experimental study on liquid periodically boils at different heating power and analysis the experimental phenomenon and data.A correlation is given to describe the relationship between the period of geysering and heating power.The result shows that the liquid periodically boils and various flow patt...

Research on Transient Operation Characteristics of Helium Gas Turbine by Simulation

MA Yunxiang, LI Dong, TIAN Zhaofei

2011, 32(2): 81-85.

Abstract(43) PDF(0)

Abstract:
By setting up the lumped parameter mathematic models of HTGR helium gas turbine and compressor device,and using Matlab/Simulink to build the simulation models,the transient operation characteristics of startup process of helium gas turbine were studied.The simulation results give the operation curve...

Numerical Simulation of Flow Characteristics of Lean Jet to Cross-Flow in Safety Injection of Reactor Cooling System

WANG Haijun, WANG Weishu, HE Huining, LUO Yushan

2011, 32(2): 86-90.

Abstract(49) PDF(0)

Abstract:
In the present work,a numerical simulation was performed to study the flow characteristics of lean jet to cross-flow in a main tube in the safety injection of reactor cooling system.The influence scope and mixing characteristics of the confined lean jet in cross-flow were studied.It can be concluded...

Progress in Investigations on Thermo-Hydraulic Characteristics of Ship Nuclear Reactors under Ocean Conditions

MA Jian, LI Longjian, HUANG Yanping, HUANG Jun, WANG Yanlin

2011, 32(2): 91-96.

Abstract(62) PDF(0)

Abstract:
The thermo-hydraulic characteristics of ship nuclear reactors are very important to the safety and reliability of ship voyage under the ocean conditions.Therefore,many countries have carried out plentiful investigations.This paper is based on some Asia open literature of investigations on thermo-hyd...

Application of Signal Analysis in Instability of Parallel Twin-Channel System under Ocean Conditions

GUO Yun, GONG Cheng, CENG Heyi, XIA Genglei

2011, 32(2): 97-102.

Abstract(56) PDF(0)

Abstract:
Parallel-channel two-phase flow systems under ocean conditions suffer from very serious parallel-channel instability,depending on the inherent characteristics of each channel and operating conditions.The influences of ocean conditions on the instability of parallel channel are very intensive.The tra...

Correlation for Prediction of Growing and Detaching Bubble Contact Diameter on a Heating Wall

CHEN Deqi, PAN Liangming, HUANG Yanping

2011, 32(2): 103-106.

Abstract(54) PDF(0)

Abstract:
Phenomenal and theoretical analysis on the evolution of bubble contact diameter during bubble growing is presented in this paper,and it was found that the bubble contact diameter is dependent on the bubble growth rate and bubble radius strongly.By analyzing the regarding experimental data published ...

Analysis of Fabrication Process for AP1000 Passive Residual Heat Removal Heat Exchanger

GAO Yongjun

2011, 32(2): 107-111.

Abstract(54) PDF(0)

Abstract:
This paper introduces the design parameters of the passive residual heat removal heat exchanger for American advanced passive pressurized water reactor（AP1000）,describes the fabrication process for the head,tubesheet,heat exchange tube,corrugated plate and support frame assembly of the heat exchange...

Analysis of Primary Coolant Pump Seal Water Distribution Influence to Chemical and Volume System Design

WANG Zhigang, LI Jun, LI Lijuan, LIU Jiang, WANG Xiaojiang

2011, 32(2): 112-115.

Abstract(43) PDF(0)

Abstract:
The possible influences to Chemical and Volume Control System design caused by coolant pump seal water distribution are discussed.The essential reason is picked out in this paper.The temperature drop of charging flow at the regenerative heat exchanger outlet is calculated,and the feasible retrofits ...

Design of Control System for Test Platform of Reactor Shutdown System’s Ball Dropping Valve

YAO Qixin, HE Xuedong

2011, 32(2): 116-119,131.

Abstract(54) PDF(0)

Abstract:
The newly designed ball dropping valve for the reactor shutdown system is a nuclear safety class equipment,and its design needs to be verified through substantial experiments.The control system of the test platform for the ball dropping valve is built to control,survey and protect a testing prototyp...

Effect of Grid on Characteristics of Stratification Stability in Density Lock

WANG Shengfei, YAN Changqi, GU Haifeng

2011, 32(2): 120-123.

Abstract(42) PDF(0)

Abstract:
The research of effect of grid on stratification stability in density lock is carried out,through the theoretical analysis and experimental observation on the flow field in density lock.The results showed that,the flow in density lock is eddy flow;eddy flow is limited to the top of stratification wh...

Evaluation on Aging State of NPP Canned Motor Pump Based on SVM

ZHANG Liming, ZHAO Xinwen, CAI Qi

2011, 32(2): 124-127.

Abstract(66) PDF(0)

Abstract:
A new method for aging assessment of canned motor pump in nuclear power plants was given in the paper.In practice,it is difficult to do the aging assessment for this kind of pump for its complicated structure,lack of samples and aging data.In order to solve these problems,the Support Vector Machine（...

Economy Analysis on Vertical Layout of Conventional Island of Nuclear Power Plant

WANG Xuefeng, LIU Jinwei, LIU Xiaoyun

2011, 32(2): 128-131.

Abstract(48) PDF(0)

Abstract:
This paper briefly introduces the aboveground layout scheme and integral sinking layout scheme of conventional island of nuclear power plants.Technological-economic analysis formula are given,as a result,main factors influencing scheme selection is obtained.Determination of the layout scheme selecti...

UML-Based Workflow Modeling of Behavior of Nuclear Power Plant Operators

GAO Wenyu, ZHANG Li

2011, 32(2): 132-136.

Abstract(34) PDF(0)

Abstract:
The property of behavior of nuclear power plant operators is analyzed by the unified modeling language,based on which a method of workflow modeling for behavior of operators is proposed.This work-flow model can be used to analyze the reliability of operators.Workflow model not only describes the pro...

Study on Application of Tri-sodium Phosphate in Containment Spray System

WANG Lin, DUAN Yongqiang, CUI Huaiming

2011, 32(2): 137-140.

Abstract(48) PDF(0)

Abstract:
Trisodium phosphate（TSP） belongs to strong acid-weak base salt,having the strong alkalescence,good solubility and steady chemical property.It can be preserved for a long time.In order to provide the effective trapping of iodine in the water and to prevent the stress corrosion cracking of the metal m...

Application of High-Strength Non-Shrink Cement Based Grouting Material in Nuclear Power Installations

LI Zhong, ZUO Weiwei

2011, 32(2): 141-144.

Abstract(48) PDF(0)

Abstract:
This paper briefly describes the related technical requirement of secondary grouting during the process of equipment installation in nuclear power projects.The method and procedure are introduced in detail from the aspects of acceptance,preparation,pouring,collecting and maintenance of the high-stre...

2011 Vol. 32, No. 2