Hiroshima, Japan

Chugoku Electric Power Co.

www.energia.co.jp
Hiroshima, Japan

The Chugoku Electric Power Company, Incorporated is an electric utility with its exclusive operational area of Chūgoku region of Japan. It is the sixth largest by electricity sales among Japan’s ten regional power utilities. It operates the Shimane Nuclear Power Plant.In 1982, Chugoku Electric Power Company proposed building a nuclear power plant near the island of Iwaishima, but many residents opposed the idea, and the island’s fishing cooperative voted overwhelmingly against the plans. In January 1983, almost 400 islanders staged a protest march, which was the first of more than 1,000 protests the islanders carried out. Since the Fukushima nuclear disaster in March 2011 there has been wider opposition to construction plans for the plant. Wikipedia.


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Patent
Chugoku Electric Power Co. and Sessile Research Corporation | Date: 2017-06-21

The present invention is a method of suppressing bio-film formation on a structure in water, including irradiating light comprising the spectrum of 409 to 412 nm to the structure where bio-film formation is to be suppressed.


Patent
Chugoku Electric Power Co. and Sessile Research Corporation | Date: 2017-06-21

The present invention provides a method of suppressing larvae of barnacles in the settlement stage from settling on a substrate in water by irradiating light comprising the spectrum of 409 to 412 nm and a part of 400 to 460 nm to larvae of barnacles in the settlement stage in a direction from the substrate to the larvae of barnacles in the settlement stage.


Patent
Chugoku Electric Power Co. and Sessile Research Corporation | Date: 2017-06-21

The present invention is a method of preventing settlement of a sessile organism on a structure in water, including irradiating light comprising the spectrum of 409 to 412 nm to the structure where settlement of the sessile organism is prevented.


An aspect of the present disclosure is to precisely define a constant value used in the Monkman-Grant analysis, when estimating remaining life of a high-chromium steel pipe through which high-temperature and high-pressure fluid is allowed to flow. A remaining life estimation method according to the present disclosure is particularly characterized in that a step of obtaining a constant (accelerated creep test S1) is performed in which a constant indicative of the product of a strain rate and a rupture time in the Monkman-Grant analysis is obtained by multiplying a first coefficient to transform uniaxial rupture ductility into multiaxial rupture ductility, the uniaxial rupture ductility being obtained from a specimen of the high-chromium steel pipe, a second coefficient to amend consumed life of the specimen, and a third coefficient to amend a measured pressure into an assessment pressure.


A creep reinforcement material containing one or a plurality of elements selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu, and Co is coated or thermally sprayed onto a surface of a heat-resistant metal member manufactured using a heat-resistant metal material, and a section coated or thermally sprayed with the creep reinforcement material is covered by a heat-resistant covering member and secured so as to contact the section. The heat-resistant metal member covered by the heat-resistant covering member is heated to a temperature of 1000C or greater, and thus compressive force accordingly acts on the heat-resistant metal member as it thermally expands in a direction toward the outer periphery, restraining thermal expansion of the heat-resistant metal member in the direction toward the outer periphery, and enabling the creep reinforcement material on the surface of the heat-resistant metal member to be efficiently diffused and permeated into the heat-resistant metal member.


Patent
Chugoku Electric Power Co. and Yamaguchi University | Date: 2016-02-03

The present invention is a plasma spraying apparatus (100a) including: a main torch (1) that includes a first electrode (3) having a spraying material discharge hole, a first mantle (4), and a first insulator (27) having a first plasma gas introducing port (5); and an auxiliary torch (2) that includes a second electrode (10), a second mantle (11), and a second insulator (28) having a second plasma gas introducing port (12). In this plasma spraying apparatus, a spraying material (20) supplied from the spraying material discharge hole is melted at the axial center of plasma (18) that is formed on the central axis of the first electrode (3) by the first electrode (3) and the second electrode (10), and a gas introducing part (4c) that introduces gas is provided on an inlet side of an opening part (4a) and/or in a tapered part (4b) provided between the opening part (4a) and the first insulator (27) in the first mantle (4). With this configuration, it is possible to prevent the spray material (20) from adhering to an inner wall of the opening part (4a).


Patent
Chugoku Electric Power Co. | Date: 2016-02-03

To prevent more than necessary restrictions on the addition of a load connected to a power source device due to a priority set for the load when the power consumption of loads connected to the power source device varies. [Solution] When a total of power consumption by the loads connected to a power source supply device (3) decreases during a power outage, in the case of prioritized loads which have a priority set, loads to be additionally connected are identified in order of the priority, whereas when the total power consumption of the identified loads exceeds the upper output limit of the power source supply device (3), loads to be identified in order of priority are skipped and an attempt is made to identify a load with a lower priority. In the case of non-prioritized loads which do not have a priority set, the loads to be additionally connected are identified in ascending order of power consumption. When the total power consumption by the loads connected to the power source supply device (3) increases and exceeds the upper output limit of the power source supply device (3), the non-prioritized loads are disconnected in descending order of power consumption, while the prioritized loads are disconnected in ascending order of priority.


[Problem] To charge and discharge a storage battery to meet an economic benefit for a user. [Solution] A control device of a storage battery includes a first obtaining unit, a second obtaining unit, a first calculating unit, a second calculating unit, a third calculating unit, and a control unit. The first obtaining unit is configured to obtain first information indicative of an electricity price set for each time slot. The second obtaining unit is configured to obtain second information indicative of charge/discharge efficiencies of the storage battery. The first calculating unit is configured to calculate first electric energy charged in the storage battery. The second calculating unit is configured to calculate second electric energy of the storage battery dischargeable from the storage battery to a load, based on the first electric energy and the charge/discharge efficiencies. The third calculating unit is configured to calculate a unit charging price per unit electric energy required to charge the second electric energy based on the second electric energy, the electricity price in the time slot during which the storage battery is charged, the first electric energy, and the charge/discharge efficiencies. The control unit is configured to compare the electricity price with the unit charging price in each of the time slots. When the electricity price is lower than the unit charging price, the control unit is configured to cause an electric power system to charge the storage battery. When the electricity price is equal to or higher than the unit charging price, the control unit is configured to cause the storage battery to perform a discharge to the load.


Patent
Chugoku Electric Power Co. | Date: 2016-02-03

[Problem] To prevent a more than necessary limitation on the power supplied to a load at a power outage and the like due to a priority assigned the loads. [Solution] When a user turns on an on-off switch (16) so that a power supply device (3) is connected to a trunk line (12) in a switchboard (4) after a power source breaker (14) is opened in response to the detection of power outage, a personal computer (PC) (5) identifies from among loads (L1 - L8) a load to which power can be supplied within the range of output capacity of the power source supply device (3) and connects the load identified to the trunk line (12). A user can assign priorities to some or all of the loads (L1 - L8). Although the PC (5) identifies the loads to be connected in order of the priority, when a total power consumption of the identified loads exceeds the limit of output capacity of the power supply device (3), the PC (5) skips the load to be identified in order of the priority and attempts to identify a load with a lower priority. The PC (5) identifies the loads for which a priority is not set in ascending order of power consumption.


Patent
Chugoku Electric Power Co. | Date: 2016-11-30

A power control device including a first detection device that detects that a knob provided on a room interior side of a door has turned to a first turn position when the door is locked, and a cutoff device that cuts off power supply to an electrical device provided in the room interior when the first detection device has detected that the knob has turned to the first turn position.

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