| Research
Project |
Period |
Researcher(s) |
Overview |
| Plan |
2002 |
| 4. Research on Regulations
for Buffer Bow Structure to Prevent Oil Spill Disasters in a Collision Accident |
|
|
Oil Spill Preventive
Tanker Project Team |
|
| (1) Study on Efficiency
Evaluation Technique of Buffer Bow Structure |
4 |
2 |
|
(1) Examination of bow structure
of existing ships and structural regulation: Examines the actual situation of
designing bow structure in the shipbuilding yard.
(2) Destruction experiment using
structural model and numerical simulation analysis: Clarifies the destruction
mechanism of buffer bow structure and its strength characteristics by destruction
experiments using a structural model of the buffer bow and also by numerical simulation.
(3) Construction of theoretical strength model against collision: Develops a simplified
analytical technique to estimate the collision strength of buffer bow structure
as well as side structure of the collided ship. (4) Design of bow structure for
trial: Verifies the effectiveness of buffer bow structure in various collision
scenarios, and designs for trial the buffer bow structure of some typical ship
types. (5) Proposal of Safety Regulation and Design Guideline: Specifies the supposed
collided ship and colliding ship to which the regulation of buffer bow structure
should be applied. Proposes the technique to establish draft regulation by introducing
FSA concept. |
(2) Clarification of
Environmental Load on Bow Structure |
2 |
2 |
|
Research and development of estimation
method of impact wave load acting on bow bulb: Develops a calculation method of
wave impact pressure and impact load acting on bow bulb using relative wave elevation
and relative velocity at the bow calculated by OSM or EUT as input data, and verifies
the estimation accuracy by comparing with the tank test conducted last year. Estimates
extreme wave load based on the long-term prediction technique using the method
developed above, and clarifies the requirements to establish the regulation of
buffer bow structure from the environmental load perspective. |
| 5. Research and Development
of Revolutionary Coastal Ships for Next Generation |
5 |
2 |
Super Eco-Ship Project
Team |
(1) Surveys technical development
trends in domestic and foreign countries. Selects the ship type based on the examination
of ship owners' needs. Presents specifications of the super eco-ship and designs
it for trial considering the suitability of gas turbine, as well as evaluates
its environmental effect and economy.
(2) Develops an evaluation technique of
performance such as maneuverability, sea quality maintenance and propulsive quality.
Designs the hull form by CAD/CFD technique and tank test.
(3) Develops design
and analysis technique of propeller and pod to enable design of an optimum contra-rotating
podded propulsor. (4) Develops prototypes of the maneuvering model and controlling
model of the super eco-ship, and evaluates its ability by simulator experiment. |
| 6. Research on Life
Cycle Assessment of Ships |
3 |
1 |
Advanced Maritime Transport
Technology Department |
(1) Study on ships with less environmental
impact: Examines the actual situation of management of parts and materials and
their recycling in the shipyard. Makes a list of materials and parts used in existing
ships.
(2) Feasibility study on dismantling yard with less environmental impact:
Examines the actual situation of dismantling technology. Examines the realities
of working circumstances when dismantling. |
| 7. Research on Advancement
of Base Technology in Shipbuilding Industry by Promoting IT |
4 |
1 |
Advanced Maritime Transport
Technology Department |
(1) Observes and records bending
work, quantifies its working efforts and systematizes its working process.
(2)
Acquires data on heat bending byacetylene gas and LPG flame, and quantifies them.
(3) Develops an optimum technique for expanding a curved surface fitted to the
actual bending work. |
| 8. Research and Examination
on Technical Requirement for Fast Track Sea Lanes (Fast Sailing in Harbor) |
2 |
1 |
Maritime Safety Department
& Advanced Maritime Transport Technology Department |
Completes a ship-handling simulator
system to apply to the safety evaluation for high-speed vessels. Based on fact-finding
examinations in congested sea areas such as Tokyo Bay, extracts human factors
of ship handling operators and ship characteristics to affect safety. Creates
scenarios for simulator experiments and acquires basic data on ship characteristics
and human factors of ship handling operators. |
| 9. Technical Development
of Small Robot System for Monitoring Deep Sea |
4 |
4 |
Maritime Safety Department
& Ocean and Ice Engineering Department |
(1) Verifies the motion measuring
technique of the system in water.
(2) Verifies the descending characteristics
by experiment with relay robot model in deepsea basin.
(3) Verifies graphic image
communication system by experiment in deep-sea basin. (4) Verifies remote control
technique and autonomous function of vehicle. (5) Constructs and adjusts whole
prototype system. Verifies function of the system by synthetic experiment in deep-sea
basin. |
| 10. Research on Collision
and Grounding Avoidance System as a Fail Safe |
5 |
3 |
Advanced Maritime Transport
Technology Department, Maritime Safety Department & Environment and Energy Department |
(1) Combines information of other
ships from automatic information acquisition system by AIS and graphic image processing.
(2) Examines the judging system of dangerous situations in navigation.
(3) Develops
algorithm for avoiding collision and grounding by communication between ship and
ship with AIS. |
| 11. Research on Technical
Development of 3D Real Time Survey System |
3 |
1 |
Environment and Energy
Department |
Manufactures prototype of disaster
watching rider to conduct real time 3D survey, and verifies the fundamental characteristics.
Devises an experimental technique to discriminate structural materials of the
collapsed structure and a database for discrimination. |
| 12. Elucidation of Behavior
of Anti-fouling Compounds for Ship Hull Paint in Sea Water |
3 |
2 |
Advanced Maritime Transport
Technology Department & Environment and Energy Department |
(1) Establishes an experimental
method in circulating tanks based on the preliminary experiment, and conducts
dissolving tests of alternative anti-fouling paint. Investigates the relation
between flow speed and dissolving quantity.
(2) Analyzes the photo-dissociation
reaction of anti-fouling compounds by infrared ray and raman spectrometry, and
estimates generated matter by dissolving.
(3) Investigates the measuring technique
of dissolution quantity by analyzing the painted membrane through liquid chromatography
and mass spectrometry. (4) Prepares in situ experiments by training ship and starts
experiments to examine the actual state of dissolving behavior. |
| 13. LCA Study on Ships |
3 |
2 |
Project Team of LCA
Study on Ships |
(1) Extracts the environmental
impact factors to apply the LCA analysis to ships.
(2) Examines the loading condition
of cargos, fuel consumption and the operation condition of the main engine and
generator by log books or operation records of pure car carriers (PCC), 3000TEU
container ships, 90000DWT bulk carriers and LNG carriers. Based on that examination,
conducts an inventory analysis of exhausted CO2 in the
navigation phase.
(3) Produces process data related to material processing such
as welding, cutting and painting. (4) Improves LCA analysis software for ships,
by adding analysis functions such as sensitivity analysis. |
| 14. Research on Reduction
of Complex Pollution by Volatile Harmful Gas from Ships |
3 |
1 |
Environment and Energy
Department |
(1) Collects density data on non-cancer-causing
substances and low vapor pressure substances by at sea measurement.
(2) Develops
calculation techniques to estimate the exhausting density at the time of loading
work, considering chemical substances characteristics.
(3) Estimates the lost
life expectancy by risk analysis technique on the health effect of cancer-causing
substances. |
| 15. Research on Monitoring
Environmental Pollution in Leakage Accidents of Harmful Liquid |
3 |
1 |
Environment and Energy
Department |
(1) Measures the fluorescence spectrum
of highly dangerous liquid transported at sea using existing laser and streak
cameras, and accumulates them in the database. Based on these data, determines
their wave length for inspection.
(2) Designs and manufactures a photodetector,
which can measure simultaneously the fluorescence of 4 wave lengths, and develops
a harmful liquid inspection system consisting of a band pass filter for inspecting
wave length, small type high-power laser and nanosecond control system. Verifies
fundamental ability of the system by tank tests and at sea tests.
(3) Investigates
the technique to receive and accumulate data such as wind direction and wind velocity.
Examines criteria of explosion limit and human exposure limit. |
| 16. Research on Water
Hammer by Rapid Growth of Air Bubble in Serious Accidents |
5 |
5 |
Environment and Energy
Department |
|
| (1) Study on Water Hammer
Following Growth of Large Air Bubble |
5 |
5 |
Environment and Energy
Department & Osaka Branch |
Conducts final verification of the
evaluation technique of water hammering force by experiment using the small-scale
experimental equipment, and proposes a mitigation technique for water hammer.
By visualization of a part of the experiment, clarifies essential coherency mechanism
of water particle motion, which determines the water hammering force, and applies
its result to the numerical analysis of K31. |
(2) Numerical Analysis
of Water Particle Motion and Water Hammering Force |
5 |
5 |
Environment and Energy
Department & Osaka Branch |
Verifies the applicability of RELAP-3D
code incorporated with optimum setting technique of input data developed last
year into the experimental data. Conducts numerical analysis of an actual plant,
and attempts to expand the evaluation technique of water hammering force and the
mitigation technique based on the result of K01 research. |
