| Research Project |
Period |
Researcher(s) |
Overview |
| Plan |
2002 |
| 17. Research on Risk
Analysis Technique of Concurrent Multi-fire |
5 |
4 |
Maritime Safety Department
& Advanced Maritime Transport Technology Department |
Conducts fire experiments referring
to the previous experiment to verify the fire expansion analysis code. Referring
to this experiment, performs a final arrangement of the modeling and parameters
of the code and makes it more practical. Completes two types of analysis codes
(machines/tools damage evaluation code and fire expansion analysis code) that
began development in 1999. As regards sample plant evaluation and scenario setting,
based on the above experiment and improvement of the present code, collects information
and evaluates the occurrence frequency of phenomenon occurring considering a practical
object plant, and attempts a preliminary analysis. |
| 18. Research on Support
System for Operation and Maintenance Suited to Human Comprehension and Recognition
Abilities in Human Coexisting Type Plants |
5 |
4 |
Maritime Safety Department
& Advanced Maritime Transport Technology Department |
Develops an interface prototype
for human coexisting type plants using the program developed last year. |
| 19. Development of Advanced
Technology for Measurement of Local Exposure Dose in Response to Diversification
of Radioactive Sources |
5 |
4 |
Maritime Safety Department
|
(1) Develops an apparatus for analyzing
the read data including software for it.
(2) Applies this the measurement of local
exposure dose and evaluates its performance. |
| 20. Research on Radioactive
Shielding in Intermediate Storage System of Consumed Nuclear Fuel |
5 |
2 |
Maritime Safety Department |
(1) Estimates the dose distribution
in the storage site boundary that holds many storage containers by applying the
Monte Carlo division/combination calculation method.
(2) Conducts neutron shield
test in boronized water, evaluates the generation of secondary gamma ray and attempts
to decrease skyshine.
(3) Conducts radioactivity measurement using the consumed
nuclear fuel carrier 'Rokuei-Maru' and its Monte Carlo analysis, and expands the
calculation code function. |
| 21. Research on Thermo
Fluid Behavior and Rapid Aging of Machines and Tools of Nuclear Reactor Plants |
5 |
2 |
Environment and Energy
Department |
|
| (1) Study on Thermo
Fluid Behavior of Nuclear Reactor Plants |
5 |
2 |
Environment and Energy
Department |
(1) Experimental study on thermo
fluid behavior of nuclear reactor plants: Manufactures the test equipment to measure
the thermo stress. Conducts experiments using the hydrodynamic oscillation test
equipment made last year to acquire hydrodynamic oscillation data on machines
and tools of nuclear plants. |
(2) Study on Ultra High
Cycle Fatigue of Machines and Tools in Nuclear Reactor Plants |
5 |
2 |
Advanced Maritime Transport
Technology Department & Maritime Safety Department |
(1) Conducts fatigue tests of stainless
steal SUS316L in normal temperature atmosphere using the rotating bending fatigue
test machine. Purchases a heating machine for test pieces and completes equipment
that is able to perform the rotating bending fatigue test in a high temperature
atmosphere. |
| 22. Research on Evaluation
Technique of Safety for Streaming in Complicated Shaped Space |
5 |
2 |
Environment and Energy
Department |
(1) Arranges data on secondary gamma
ray generated by streaming neutrons. Calculates the behavior of secondary gamma
ray in ducts, and builds a database. Develops a simplified calculation method
of secondary gamma ray streaming.
(2) Analyzes the transmission behavior of streaming
radioactive rays in the shielded rear space by 2D transport code and Monte Carlo
calculation. |
| 23. Research on Advanced
Code System of Shield Calculation |
5 |
2 |
Environment and Energy
Department |
(1) Library code of nuclear constant
developed in USA: Develops a program to prepare the group constant library for
the Sn calculation code from the certified nuclear constant libraries JENDL and
ENDF/B, referring to NJOY. Evaluates the library by benchmark calculation.
(2)
3D Sn transport calculation code: Designs the input support system for TORT and
prepares its specification. |
| 24. Research on Safety
Evaluation Technique for Protection Structure against Collision of Consumed Nuclear
Fuel Carriers |
3 |
1 |
Advanced Maritime Transport
Technology Department |
(1) Investigation of collision scenario
and safety criteria: Performs probabilistic safety analysis, proposes a reasonable
collision scenario considering the actual operation state.
(2) Simplified analysis
of collision strength: Proposes a new simplified analysis method as an alternative
to the Minorsky method, and verifies its effectiveness.
(3) FEM simulation analysis
for collision: Investigates a reasonable application technique of FEM analysis
of elements generation and judgment of destruction. Analyzes for trial the side
structure of an existing carrier by FEM and compares with the result by the simplified
method for verification. |
| 25. Origination of Innovative
Thermal and Fluid Systems by Smart Control of Turbulence |
5 |
3 |
Center for Smart Control
Turbulence |
|
| (1) Study on Turbulence
Control of Fluid System by High Function |
5 |
3 |
Center for Smart Control
Turbulence |
(1) Study on micro-bubble: Manufactures
ultra-small channel. Conducts micro-bubble experiments corresponding to numerical
simulation, and acquires data for verification.
(2) Study on numerical simulation
of multiphase turbulent flow: Examines the effects of pressure distribution around
the bubble, velocity gradient and unsteady vortex motion on the bubble motion
by direct numerical simulation to obtain information concerning interference of
turbulence and bubble. Modeling the obtained information, performs numerical calculation
of bubbly flows in channel and examines the agreement of calculated and experimental
results.
(3) Study on measuring technique of multiphase flow: Conducts detailed
measurement on distribution of turbulent intensity, Reynolds stress and vorticity
of fluid phase part in flow field around the bubble, clarifies experimentally
the mechanism of frictional drag reduction. (4) Management of Center for Smart
Control Turbulence: Monitors studies to be conducted in 2002, holds a general
assembly, international conference and evaluation committee, maintains the home
page and prepares research reports, evaluation reports in 2001, planning papers
and detailed execution of research programs in 2002. (5) Study on bubble generating
technique: Using small bubble generation equipment improved in 2001, conducts
controlling tests of small bubble in low velocity flow by discharging a water
jet into the vicinity of wall. (6) Study on measuring system of microbubble: Improves
the system for highly accurate experiment and automatic operation of experiment
using the highspeed small channel, and acquires experimental data for verification.
Develops control technique to reduce the combustion noise and vibration and confirms
its effectiveness and operation range. |
(2) Study on Lean Premixed
Combustion Using Turbulence Control Technology |
5 |
3 |
Center for Smart Control
Turbulence |
(1) Combustion characteristics of
lean premixed hydrogen combustion chamber: Verifies the performance of the noise
control mechanism by variable heating.
(2) Study on combustion simulation: Calculates
the flow field of rapidly expanding areas for flame kept in the combustion chamber.
(3) Study on control device and algorithm: Investigates the active noise control
device and its algorithm. |
| 26. Experimental Research
on Interference of Ice and Oil, and its Diffusion and Drift |
3 |
3 |
Ocean and Ice Engineering
Department |
As regards the interference of ice
and oil, by experiment in a low temperature chamber, investigates the process
in the ice melting season of reflowing out oil, which is locked in ice by the
oil-ice-sandwich-phenomenon. As for the behavior of oil spilled out into sea ice,
conducts experiments in the ice model basin for the following two cases: Water
flow under the ice sheet, and sea ice not fully covered by an ice sheet but mixed
with ice pieces and water. As this is the final year of this project, completes
all studies. |
| 27. Research on Sea
Transport of Natural Gas in the Gas Hydrate Pellet State - Study on Safety of
Transport of Gas Hydrate Pellet as Bulk Cargo- |
3 |
2 |
NGH Transport Project
Team |
(1) Measures specific heat, heat
conductivity and dissociation heat if necessary and possible.
(2)Evaluates experimentally the difference of the dissociation between with and
without the static compressive load. Designs and manufactures the test machines
of dynamic loading (cycling load) and conducts preliminary experiments.
(3) Designs and manufactures measuring devices of dissociation speed, and measures
the dissociation speed by varying the thermal condition under the self-maintaining
state.
(4) As a basis for estimation of the dissociation speed in the full-scale condition,calculates
the heat condition considering dissociation (heat consumption reaction).
(5) Corresponding to the concept design progress of the ship (in the charge of
mitsui Engineering & Shipbuilding Co., LTD), clarifies the summary of necessary
safety measures. |
| 28. Development of Floating
Lithium Extracting System in Sea Water Using Ocean Energy |
3 |
3 |
Ocean and Ice Engineering
Department & Environment and Energy Department |
Completes the estimation technique
of behavior of wave transmitting type floating body and fluidized bed conditions.
Conducts the entire experiment for verification in the deep-sea basin, designs
for trial and estimates the economic possibility of the system. |
