Abstract: A light source section of the image reading apparatus illuminates a document with light. An image sensor outputs image signals. An operating section accepts input of an enlargement factor and selection of a document scanning mode. An image processing section generates image data, from pixels (lines) in a quantity according to an enlargement factor. A stepper motor moves the document or the light source section. During a quiet mode, a signal generating section inputs to the stepper motor a pulse signal of a fixed frequency within a quiet mode frequency band. The quiet mode frequency band is a frequency band in which vibration of the stepper motor is at or below a predetermined normal vibration level.

Abstract: An image forming apparatus includes a fixing section, a low voltage detection circuit, an arithmetic control section, and a storage section. The fixing section has a heater and fixes a toner image on recording paper with heat of the heater. The low voltage detection circuit detects a drop in an input voltage from a power source. The arithmetic control section determines, when a drop in the input voltage is detected by the low voltage detection circuit, whether the drop in the input voltage is linked to working of the heater. The arithmetic control section lowers the temperature of the heater when the drop in the input voltage is linked to the working of the heater, and causes the storage section to store a result of the detection by the low voltage detection circuit when the drop in the input voltage is not linked to the working of the heater.

Abstract: A light source section of the image reading apparatus illuminates a document with light. An image sensor outputs image signals. An operating section accepts input of an enlargement factor and selection of a document scanning mode. An image processing section generates image data, from pixels (lines) in a quantity according to an enlargement factor. A stepper motor moves the document or the light source section. During a quiet mode, a signal generating section inputs to the stepper motor a pulse signal of a fixed frequency within a quiet mode frequency band. The quiet mode frequency band is a frequency band in which vibration of the stepper motor is at or below a predetermined normal vibration level.

Abstract: According to one embodiment, a reactor oscillation power range monitor includes: a receiving unit configured to receive LPRM signals issued by LPRM detectors differing in vertical position out of a plurality of LPRM detectors placed in a reactor core; a specification unit configured to specify any exclusion signal which meets an exclusion condition out of the received LPRM signals; an estimation unit configured to estimate an alternative signal for the exclusion signal based on a regular signal which does not meet the exclusion condition out of the received LPRM signals; an arithmetic averaging unit configured to output an arithmetically averaged signal obtained by arithmetically averaging the regular signal and the alternative signal; a time averaging unit configured to output a time-averaged signal obtained by time-averaging the arithmetically averaged signal; and a calculation unit configured to output a standard value obtained by dividing the arithmetically averaged signal by the time-averaged signal.

Abstract: According to an embodiment, a traversing incore probe valve support has: a valve bed fixed to a traversing incore probe valve provided in a traversing incore probe guide tube extending to outside of a reactor containment vessel; a stand provided on a floor surface outside the reactor containment vessel; and a displacement allowing member that connects the stand and valve bed in such a manner that they can be displaced in an axial direction of the traversing incore probe guide tube. The displacement allowing member may include: a lower slide rail fixed to the stand valve bed and having an upward contact surface; and an upper slide rail fixed to the valve bed and having a downward contact surface that can be slid in the axial direction of the traversing incore probe guide tube while contacting the upward contact surface.

Abstract: The power monitoring system has: a local power range monitor (LPRM) unit that has a plurality of local power channels to obtain local neutron distribution in a nuclear reactor core; an averaged power range monitor (APRM) unit that receives power output signals from the LPRM unit and obtains average output power signal of the reactor core as a whole; and an oscillation power range monitor (OPRM) unit that receives the power output signals from the LPRM unit and monitors power oscillations of the reactor core. The output signals from the LPRM unit to the APRM unit and the output signals from the LPRM unit to the OPRM unit are independent.

Abstract: A reactor core coolant temperature measuring apparatus for measuring the temperature of the coolant flowing in the reactor core of a nuclear reactor comprises a ?-ray thermometer having a temperature measuring section arranged below the bottom of the reactor core and a ?-ray heat generation detecting section arranged between the bottom and the top of the reactor core, a cable for transmitting the signal output from the temperature measuring section and an output signal processing means for receiving the signal and computationally determining the local temperature of the coolant at the position of placement of the temperature measuring section.

Abstract: According to an embodiment, a power monitoring system for a nuclear reactor comprises at least a first system and second system. The first system and the second system respectively comprise a plurality of APRM units, a plurality of FLOW units, and a plurality of OPRM units. The APRM units respectively generate an LPRM signal that indicates the local output of neutrons by the reactor core, and generate an APRM signal indicating the average output of the reactor core, based on the LPRM signal. The FLOW units respectively generate a FLOW signal indicating the flow rate of reactor coolant. The OPRM units respectively are supplied with the LPRM signal and the APRM signal from at least two aforementioned APRM units and are supplied with the FLOW signal from at least one aforementioned FLOW unit; and, based on the supplied LPRM signals, APRM signals and FLOW signals, generate a trip signal for shutting down the reactor.

Abstract: A winch braking device includes: a brake; a brake pedal; a reaction force-imparting element that imparts a reaction force to the brake pedal; a rotation link that rotates by interlocking with the foot operation at the brake pedal; a brake valve linked to the rotation link, that applies a secondary pressure to the brake in response to the foot operation at the brake pedal; and a tension spring, with one end thereof attached to the vehicle body at a predetermined position and another end thereof attached to the rotation link, that applies a force to the brake pedal along a direction opposite a direction of the foot operation. As the foot operation is performed at the brake pedal, the tension spring extends and a shortest distance between a rotational center of the rotation link and a central axis of the tension spring becomes smaller.

Abstract: The power monitoring system has: a local power range monitor (LPRM) unit that has a plurality of local power channels to obtain local neutron distribution in a nuclear reactor core; an averaged power range monitor (APRM) unit that receives power output signals from the LPRM unit and obtains average output power signal of the reactor core as a whole; and an oscillation power range monitor (OPRM) unit that receives the power output signals from the LPRM unit and monitors power oscillations of the reactor core. The output signals from the LPRM unit to the APRM unit and the output signals from the LPRM unit to the OPRM unit are independent.

Abstract: To provide a rod block monitor in which irrespective of the selection or non-selection of a control rod, such a process is repeatedly executed that gain adjustment is performed at fixed intervals at all times to match a local area average value of signals of neutron detectors surrounding the control rod with a nuclear reactor average power and a block level appropriate to the local area average value of the neutron detector signals after the gain adjustment is set.

Abstract: A traveling reactor power monitoring system includes a traveling reactor power monitoring system including a drive control unit configured to move a traveling probe in a guide tube by rotating a motor, and a proximity switch that generates a 1st preventing retraction signal when the travelling probe is detected by the proximity switch to exist at a predefined stop range in a shielding vessel. The drive control unit stops retracting the travelling probe when the 1st preventing retraction signal is generated by the proximity switch, and wipes out the 1st preventing retraction signal by detecting that the probe exists outside the predefined stop range on the basis of a probe information as a substitute for the 1st preventing retracting signal output by the proximity switch.

Abstract: A traveling reactor power monitoring system includes a probe cable, a traveling prove connected to the probe cable, a storage reel storaging the probe cable, a motor feeding and spooling the probe cable, a drive control unit driving the motor at a scheduled drive speed, a torque sensor measuring a drive torque for moving the traveling probe and the probe cable, an aimed torque DB storing a first threshold and a second threshold, a drive information DB storing the drive torque and the drive speed that the drive control unit moved the traveling probe and a scheduled drive speed processor calculating the scheduled drive speed that is set faster than previous drive speed when the previous drive torque is smaller than the second threshold, and is set slower than previous drive speed when the previous drive torque is larger than the first threshold.

Abstract: An oscillation power range monitor has: an averaging section that assigns a plurality of LPRM readings input filtered to remove noise thereof from local power range monitors to calculate cell average value of the LPRM readings assigned to each cell; a time average processing section that calculates a cell time average value from the average value of each cell; a normalized cell value computing section that computes the normalized cell value for each cell from the cell time average value and the cell average value; a trip determining section that receives the normalized cell value, monitors oscillations of each cell output and outputs a scram trip when the normalized cell value exceeds a predetermined value; and an abnormality determining section that assigns a plurality of LPRM readings input and determines abnormality of each LPRM reading assigned to each cell based on the oscillations of the LPRM reading.

Abstract: An oscillation power range monitor has: an input signal processing section that calculates a normalized cell value from LPRM signals input from local power range monitors; a soundness checking basic signal generating section that generates a simulated cell value that is variable on a time series basis; and a trip determining section that receives the normalized cell value and the simulated cell value respectively from the input signal processing section and the soundness checking basic signal generating section as input, compares the normalized cell value and the simulated cell value with a determination threshold value and outputs a scram trip signal when either of them exceeds the determination threshold value.

Abstract: In order to enable a medical worker to certainly and easily know whether a patient on a home oxygen therapy, who continues to inhale an oxygen-enriched gas at home, performs the inhalation as prescribed, a history of a supply condition of the oxygen-enriched gas supplied to the patient is recorded and held as supply history information, this supply history information is compared with a prescription of the oxygen therapy of the patient to generate patient's compliance information to indicate the degree to which the oxygen therapy is performed in accordance with the prescription, the oxygen concentrating apparatus is constructed to be portable, and a doctor can confirm the patient's compliance information at the time of going to a medical institution regularly.

Abstract: Each of APRM units equipped for each of the diversity channels has printed circuit boards having circuit patterns thereon and a circuit description elements installed on the printed circuit board. The circuit description elements are FPGA elements manufactured by mutually different providers for example and implemented an electric circuit described in a hardware description language by a configuration tool. The circuit description elements can be implemented mutually different descriptions of the electric circuit, or can be implemented the electric circuit by mutually different configuration tools. Also, the printed circuit boards for the diversity channels can be different from each other.

Abstract: The power monitoring system has: a local power range monitor (LPRM) unit that has a plurality of local power channels to obtain local neutron distribution in a nuclear reactor core; an averaged power range monitor (APRM) unit that receives power output signals from the LPRM unit and obtains average output power signal of the reactor core as a whole; and an oscillation power range monitor (OPRM) unit that receives the power output signals from the LPRM unit and monitors power oscillations of the reactor core. The output signals from the LPRM unit to the APRM unit and the output signals from the LPRM unit to the OPRM unit are independent.

Abstract: In order to enable a medical worker to certainly and easily know whether a patient on a home oxygen therapy, who continues to inhale an oxygen-enriched gas at home, performs the inhalation as prescribed, a history of a supply condition of the oxygen-enriched gas supplied to the patient is recorded and held as supply history information, this supply history information is compared with a prescription of the oxygen therapy of the patient to generate patient's compliance information to indicate the degree to which the oxygen therapy is performed in accordance with the prescription, the oxygen concentrating apparatus is constructed to be portable, and a doctor can confirm the patient's compliance information at the time of going to a medical institution regularly.

Abstract: Each of APRM units equipped for each of the diversity channels has printed circuit boards having circuit patterns thereon and a circuit description elements installed on the printed circuit board. The circuit description elements are FPGA elements manufactured by mutually different providers for example and implemented an electric circuit described in a hardware description language by a configuration tool. The circuit description elements can be implemented mutually different descriptions of the electric circuit, or can be implemented the electric circuit by mutually different configuration tools. Also, the printed circuit boards for the diversity channels can be different from each other.