Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Heavy Industries Limited

Dai Nippon Printing Co., Ltd.

The University of Tokyo

Dai Nippon Prinitng Co., Ltd.

Kenichi Morimoto

Koichi Kishita

Yuichi Yakushiji

Sumiko Takeda

Kazuyuki Misawa

Fumikado Anzai

Kiyoshi Ishii

Yoshikane Yamanaka

Yuji Suzuki

Shinichi Toda

Hideaki Emoto

Yuki Aritsuka

Yoshinori Kinase

Naoki Shikazono

Nobuhide Kasagi

Katsuya Daigo

Yasuhiro Takatsudo

Masanobu Soga

Yoshinori Suzue

A control arithmetic device controls so that an approval-receiving device displays a content of a new control program that the control arithmetic device received from the editing device. The approval-receiving device receives input of approval information that indicates whether a change of a control program is approved or not from an manager. The control arithmetic device changes the control program to the new control program in the case where the approval information received from the approval-receiving device indicates approval of the control program.

Control program management system and method for changing control program

A safety device includes a first computation unit, a second computation unit, an output control unit, and a first central processing device. The first computation unit is configured to perform a first computation on a detected value detected from a subject to be controlled, thus obtaining a first result value. The second computation unit is configured to perform a second computation on the detected value, thus obtaining a second result value which is to be determined if equal to the first result value. The output control unit is configured to output the first result value in a case that the second computation unit determines that the first result value is equal to the second result value, and not to output the first result value in a case that the second computation unit determines that the first result value is not equal to the second result value.

Safety device and computation method for safety device

A Plant safety design assistance device () is configured by a communication device (), a diagnostics and monitoring device (), a fault inspection management device (), and a design and manufacturing device () being interconnected via network (). The diagnostics and monitoring device () receives plant status information (dc) from a plant control system () and carries out monitoring and diagnostics an the plant. The fault inspection management device () maintains fault inspection information (D) of an apparatus which is used in the plant. The design and manufacturing device () maintains design and manufacturing information of the apparatus which is used in the plant. The design and manufacturing devise () receives the fault inspection information (D) from the fault inspection management device (), and carries out a plant safety design which takes the fault inspection information into account. The plant safety design is thus assisted, with the plant monitoring and maintenance activities being linked therewith.

Plant safety design assistance device and plant monitoring and maintenance assistance device

Case for a process control instrument

Process control instrument

The reliability of output data is enhanced, and the frequency of stopping arithmetic devices is reduced. A redundant system includes an input device; a plurality of arithmetic devices that receive input data from the input device; and an output device that receives output data output from the arithmetic devices, the redundant system causing the arithmetic devices to perform the same processing. Each of the arithmetic devices includes: a first communication unit that acquires the input data from the input device; and a second communication unit that sends the input data acquired by the first communication unit to other arithmetic device and receives the input data acquired by the other arithmetic device from the other arithmetic device.

Redundant system

A heat exchanger has multiple laminated fins. Each finhas multiple topsand multiple bottomsarranged to have a preset acute angle &#x3b3; (for example, 30 degrees) to an air flow line at an air inlet and to make an air flow in a cavity region behind each of multiple heat transfer tubestoin an air flow direction at an air outlet. This design of the finsproduces effective secondary flows of the air to improve the heat transfer efficiency and makes an additional contribution to heat exchange, due to the air flow in the cavity region behind each of the heat transfer tubestoin the air flow direction. This arrangement effectively prevents separation of the air flow and a local speed increase of the air flow, while improving the overall heat exchange efficiency by production of the effective secondary flows of the air.

Fin structure for fin tube heat exchanger

The present invention provides a mask blank used for the charged particle beam exposure made by employing an SOI substrate having a silicon membrane higher reliability in quality, without the problem of deformation due to the compression stress of a silicon oxide film as an intermediate layer of the SOI substrate, and provides a method for forming a mask blank and a mask used for the charged particle beam exposure. The mask blank used for the charged particle beam exposure made by employing an SOI substrate having a front-side silicon membrane and a back-side silicon layer with a silicon oxide layer interposed therebetween is characterized in that the back-side silicon layer and the silicon oxide film of said SOI substrate are partially removed to form an opening to be an exposed region and an etching stop layer having lower stress is formed in the opening.

Mask blank for charged particle beam exposure, method of forming mask blank and mask for charged particle beam exposure

Growing community of inventors

Tokyo, Japan

Kenichi Morimoto