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July 6, 2000
Takenaka Corporation and Hitachi, Ltd. have
Begun Working Together
with the Exchange, Sharing and Simulation of 3-D CAD Data
to Construct Plant 5 of Chubu Electric Power Company's
Hamaoka Nuclear Power Plant
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Hitachi, Ltd.
Takenaka Corporation
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Hitachi, Ltd. (President: Etsuhiko
Shoyama; Head Office: Chiyoda-ku, Tokyo) and Takenaka Corporation (President:
Toichi Takenaka; Head Office: Chuo-ku, Osaka) have recently agreed to
begin working together to form a cooperative schedule, aiming to make
the construction work of nuclear power plants more efficient. The companies
are exchanging and sharing 3-D CAD data and working on joint simulations
with regard to the machinery and architecture of the
Plant 5 Turbine Building of Chubu Electric Power Company's Hamaoka Nuclear
Power Plant * (see below), which is presently under construction.
This is the first time in Japan for a machinery manufacturer and construction
company to work together, exchanging 3-D CAD data and adjusting the
construction schedules.
* Hitachi has received the order
for the machinery, and Takenaka has received the order for the building
construction as the joint-venture lead-manager for the Plant 5 Turbine
Building of Hamaoka Nuclear Power Plant, Chubu Electric Power Co., Inc.
With the construction of nuclear power plants, in
order to avoid any interference with the machinery and piping and to
ensure enough space for operation and maintenance, considerations must
be made using 3-D CAD. Up to now, the machinery manufacturer has only
looked at the design and manufacture of the machinery, and the construction
company only the design and construction of the building. However, as
well as the site of the Plant 5 Turbine Building of the Hamaoka Nuclear
Power Plant being so narrow, a large increase is expected in the amount
of machinery to be installed before construction of the building is
completed. Furthermore, because further reductions in the work period
and costs have been asked for, the machinery manufacturer and the construction
company have been asked to work together.
In order to avoid any interference with the
machinery and piping and to ensure enough space for operation and maintenance
in the design of nuclear power plants, traditionally adjustments
had been made using plastic models. Since the 1980's Hitachi has developed
a 3-D CAD system, which it now uses from the planning and design stages,
to construction and through to detail designs. In addition to designing
the 3-D CAD system, the company has also developed a general support
system that can be used for construction and maintenance, allowing for
a reduction in construction costs.
Takenaka started making full use of the 3-D CAD
system from the 1980's. In 1997, the company started using the system
for basic functions such as the input of shapes, editing, and the exchange
of data with machinery manufacturers to streamline nuclear power plant
designs. Nowadays, additional functions such as CG animations have been
added.
With the current project, Hitachi has provided Takenaka
with the 3-D data used for the design of the Plant 5 Turbine Building
of the Hamaoka Nuclear Power Plant, and will propose plans for the overall
project. Takenaka will produce the 3-D data for the temporary building
materials, and after incorporating this data with the data for the actual
building will propose a construction schedule, and will make this into
a CG animation combining the machinery installation schedule. The two
companies will collaborate to form a cooperative schedule based on the
CG animation. It should be noted that because this CG animation enables
a simple display of a complicated construction, it will also be used
to educate people related to the construction and promote understanding
among the local residents.
In the future, depending on the subsequent progress
of the construction, the two companies will exchange electronic data
and continue to work together at a detailed and highly accurate level.
The companies will also exchange electronic data on weekly construction
plans, work together adjusting schedules and work plans, and strive
to make large cutbacks in paperwork.
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