Hitachi, Ltd.

Hitachi Plant Engineering Construction Co., Ltd.

Other

Hitachi Engineering Co., Ltd.

Hitachi Life Corporation

Sakae Ebata

Kouichi Ushiroda

Akinori Tajiri

Naoto Yoshida

Tadashi Matsuura

Tatsuo Makita

Masakazu Nagase

Takanori Aramaki

Norihide Tooyama

Keiya Sato

Tatsuya Ootoshi

Seiichi Inoue

Masahide Watari

Osamu Oyamada

Sunao Hayakumo

Nobuaki Ohshima

Supports are provided on the upper outer casing of each turbine of a turbine unit, and the upper inner casing of the turbine is temporarily placed on the supports of the upper outer casing, which is temporarily placed on the operating floor. By placing the casings temporarily in that way, a large space can be secured for the inspection of the turbine unit, and the inspection can be carried out quickly, which increases the operation ratio of the whole plant including the turbine unit. This invention is useful mainly for turbine units and their overhaul.

Turbine-unit disassembling method and turbine unit

Supports are provided on the upper outer casing of each turbine of a turbine unit, and the upper inner casing of the turbine is temporarily placed on the supports of the upper outer casing, which is temporarily placed on the operating floor. By placing the casings temporarily in that way, a large space can be secured for the inspection of the turbine unit, and the inspection can be carried out quickly, which increases the operating ratio of the whole plant including the turbine unit. This invention is useful mainly for turbine units and their overhaul.

Method of disassembling turbine equipment and the turbine equipment

A plate structure block for establishing a surface layer ground is formed integrally with an iron plate on an upper surface of a reinforced concrete member. A lift metal fittings for transporting the block is installed on the block. The surface layer ground establishment block has a large ground bearing pressure and is a portable block. This block is covered on the surface layer ground and establishes the ground for operating a heavy material machinery and/or for maintaining a heavy material member. By operating a mobile heavy crane on the established ground, the working for constructing a plant is carried out. The material for constructing the ground is reused, the shape of the ground site is easily changed, and the dismantling and removal of the ground is simplified.

Surface layer ground establishment block, surface layer ground using the

A building for accomodating turbines and a generator in a power plant is equipped with overhead traveling cranes and constructed so that the overhead traveling cranes are arranged to travel in parallel with each other in a direction perpendicular to an axis of the turbines and the generator. The crane rails for supporting the overhead traveling cranes are arranged in parallel with one another in a direction perpendicular to the axis of the turbine and generator.

Turbine building equipped with overhead traveling cranes

A turbine pedestal for supporting turbines and a generator installed in a generating plant is composed of a frame split into segments formed of concrete reinforcing steel platen and reinforced concrete as its main components. The turbine pedestal includes a deck of a concrete structure open only at the top and having reinforcements in addition to the platen arranged compactly in the vicinity of the top of the concrete as in a structure of the prior art, but less than the prior art in the vicinity of the sides and bottom due to the reinforcing affect of the platen. The segments of the frame formed of steel are prefabricated in the plant and have a shape and weight suitable for transportation to the site of construction. The segments of the frame are firmly connected together as by welding or interconnected through a concrete connection structure having compactly arranged reinforcements. In building the turbine pedestal, the frame segments prefabricated in the plant are transported to the site of construction, set in predetermined positions, and filled with concrete after reinforcements are arranged only in necessary portions.

Turbine pedestal

A reinforced concrete shield for a nuclear reactor and a method for constructing the same. The interior surface of the concrete shield wall is lined with a layer of heat insulator.

Shield wall for surrounding reactor containment vessel for nuclear

Growing community of inventors

Hitachi, Japan

Sakae Ebata