Tokyo, Japan

Tokyo Electric Power Company, Incorporated , also known as Toden or TEPCO, is a Japanese electric utility servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are located in Uchisaiwaicho, Chiyoda, Tokyo, and international branch offices exist in Washington, D.C., and London. It is a founding member of strategic consortiums related to energy innovation and research; such as JINED, INCJ and MAI.In 2007, TEPCO was forced to shut the Kashiwazaki-Kariwa Nuclear Power Plant after the Niigata-Chuetsu-Oki Earthquake. That year it posted its first loss in 28 years. Corporate losses continued until the plant reopened in 2009. Following the March 2011 Tōhoku earthquake and tsunami, its power plant at Fukushima Daiichi was the site of a continuing nuclear disaster, one of the world's most serious. TEPCO could face ¥2 trillion in special losses in the current business year to March 2012, and the Japanese government plans to put TEPCO under effective state control to guarantee compensation payments to the people affected by the accident. The Fukushima disaster displaced 50,000 households in the evacuation zone because of leaks of radioactive materials into the air, soil and sea.In July 2012 TEPCO received ¥1 trillion from the Japanese government. TEPCO's management subsequently made a proposal to its shareholders for the company to be part-nationalized. The total cost of the disaster was estimated at $100bn in May 2012. Wikipedia.


Time filter

Source Type

Patent
Mitsubishi Group, Hokkaido Electric Power Co., Tohoku Electric Power Co., Tokyo Electric Power Company, Chubu Electric Power Co., Hokuriku Electrical Power Company, Kansai Electric Power Co., Chugoku Electric Power Co., Shikoku Electrical Power Co., Kyushu Electric Power, Electric Power Development Co., Japan Central Research Institute of Electric Power Industry and Clean Coal Power R&D Co. | Date: 2012-07-25

A slag monitoring device 100 for a coal gasifier includes a slag hole camera 11 that observes a slag hole 3 from which molten slag flows out, a water surface camera 12 that observes a situation in which the slag flowing out from the slag hole 3 falls onto a water surface 5H of cooling water 5, a falling sound sensor 13 that observes a sound of the slag falling onto the water surface 5H, and a processing device 20 that determines a solidification and adhesion position of the slag based on an opening area of the slag hole 3 observed by the slag hole camera 11 and falling lines and falling positions of the slag observed by the water surface camera.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Johnson Controls | Date: 2013-01-23

A refrigerator is capable of maintaining a lubricant supply to a compressor and is environment-friendly and simply configured. The refrigerator includes: a cooling-water line 14 having a cooling-water pump 18 to thereby send water for cooling a refrigerant inside of a condenser 6; a lubricating-water supply line 32 connecting the part downstream from the cooling-water pump 18 on the cooling-water line 14 and a compressor 4 and supplying water flowing through the cooling-water line 14 as a lubricant to the compressor 4; and a backup means 60 supplying water to the lubricating-water supply line 32 instead of supplying water from the cooling-water line 14 when the cooling-water pump 18 is not driven.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Johnson Controls | Date: 2013-01-23

An axial flow compressor 10 includes: a rotor 31 having a rotor vane 34; a first pressing member 41 joined to one end surface of the rotor 31; a second pressing member 42 joined to the other end surface of the rotor 31; a rotor shaft portion 46 penetrating the first pressing member 41, the rotor 31 and the second pressing member 42; and a nut 43 which fixes the first pressing member 41 and the second pressing member 42 on the rotor shaft portion 46 with the first pressing member 41 and the second pressing member 42 holding the rotor 31 between. The rotor shaft portion 46 is made of a material having a lower linear expansion coefficient than that of a material making at least a part of the rotor 31. The material making at least a part of the rotor 31 may be aluminum or aluminum alloy.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Johnson Controls | Date: 2013-01-23

An axial flow compressor 10 includes: an electric motor 22 including a rotating shaft 22a; a compression portion 20 including a driving shaft 40 connected without a speed-up gear to the rotating shaft 22a of the electric motor 22 and a rotor 31 rotating together with the driving shaft 40, the compression portion 20 driving the driving shaft 40 and thereby compressing a working fluid; and a velocity reducing portion 24 having a space for reducing the flow velocity of a working fluid discharged from a discharge opening of the compression portion 20. The rotating shaft 22a of the electric motor 22 is connected to the end of the driving shaft 40 on the side of the discharge opening; and the velocity reducing portion 24 is disposed so as to surround the electric motor 22.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Kansai Electric Power Co., Kobe Steel, Danish Technological Institute DTI and Johnson Controls | Date: 2014-03-05

The condensing apparatus 71 includes: a compressor 10 which has a compression part 20 compressing a working fluid; a condenser 13 which condenses the working fluid compressed by the compression part 20; and a spray mechanism 81 including a nozzle 82 which sprays a cooling fluid into a fluid passage 91 to cool the working fluid flowing through the fluid passage 91 between a discharge opening CS2 of the compression part 20 and an inlet 13a of the condenser 13.


Patent
Tokyo Electric Power Company and Iwabuchi Corporation | Date: 2014-12-10

A rod portion is coupled to a support wire at one end thereof and is rotatably coupled to a base portion of the anchor body portion. The anchor body portion includes the resistance plate body, an inner reinforcing plate, and an outer reinforcing plate, a first hitting portion is provided on the outer reinforcing plate, and a second hitting portion to be hit next to the first hitting portion is provided at a position higher than the first hitting portion.


Patent
Tokyo Electric Power Company and Toshiba Corporation | Date: 2012-01-31

In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor.


Patent
Tokyo Electric Power Company and Toshiba Corporation | Date: 2012-01-31

In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor.


Patent
Tokyo Electric Power Company | Date: 2013-01-23

To provide a public power supply system by which it is possible to use power in a public location both conveniently and safely without erroneous operations. A outlet 11, to which power is supplied from a distribution line 13, is installed in advance in a predetermined public location and a communication terminal 32 requesting the outlet 11 to supply power and a center server 31 are connected in advance via an Internet 33 and when there is a request to the outlet 11 to supply power, the center server 31 outputs a current supply command to a current control unit 14 via a communication network (Internet 24 or telephone network 25) and the current control unit 14 permits supply of a current to be supplied to the outlet 11 when there is a current supply command and there is information to allow supply of a current to the outlet generated using a remote control prevention device installed near the outlet.


Patent
Tokyo Electric Power Company | Date: 2016-12-14

A flow speed measurement method includes conducting a heat exchange at a prescribed part of a surface of a pipe, the flow speed measurement method further includes measuring a temperature distribution in a pipe-axis-direction on the surface of the pipe in a case that the heat exchange has been conducted at the prescribed part, and the flow speed measurement method further includes determining a flow speed of a thermal fluid flowing inside the pipe, based on the temperature distribution measured.

Loading Tokyo Electric Power Company collaborators
Loading Tokyo Electric Power Company collaborators