Abstract: An information processing method according to one aspect, includes: each time when an RFID reader (1) reads a code of an RF tag, storing a read code of the RF tag and a date/time of reading and the work attribute in association with each other; and transmitting a stored code of each RF tag, a stored date/time, and a stored work attribute to a server computer (2), wherein the server computer (2) stores the code of each RF tag and the date/time and the work attribute in association with each other.

Abstract: An image forming apparatus includes a sheet feeder attaching unit, a communication unit, a connection determining unit, an acquiring unit, a storage unit, a compatibility determining unit and a forcible unconnected control unit. The connection determining unit causes the communication unit to communicate with a communication section of a sheet feeder, and determines whether the sheet feeder is connected based on a communication result. The acquiring unit acquires attribute information of the sheet feeder. The storage unit stores attribute information of sheet feeders being compatible, in terms of control, with the image forming apparatus. The compatibility determining unit determines whether the connected sheet feeder is compatible by comparing the acquired attribute information of the connected sheet feeder with the stored attribute information.

Abstract: An image forming apparatus includes a sheet feeder attaching unit, a communication unit, a connection determining unit, an acquiring unit, a storage unit, a compatibility determining unit and a forcible unconnected control unit. The connection determining unit causes the communication unit to communicate with a communication section of a sheet feeder, and determines whether the sheet feeder is connected based on a communication result. The acquiring unit acquires attribute information of the sheet feeder. The storage unit stores attribute information of sheet feeders being compatible, in terms of control, with the image forming apparatus. The compatibility determining unit determines whether the connected sheet feeder is compatible by comparing the acquired attribute information of the connected sheet feeder with the stored attribute information.

Abstract: A hydraulic system for driving a control rod drive mechanism includes a control rod drive water pump, a charging line connected to a discharge side of the control rod drive water pump and including a pressure gauge on the discharge side thereof, a purge line connected to the discharge side of the control rod drive water pump for feeding a coolant to a control rod drive mechanism, and a plurality of hydraulic control units connected to the charging line through charging headers and the purge line, each of said hydraulic control units including an accumulator for storing pressurized water using high-pressure gas and a scrum valve through which the accumulator is connected to the control rod drive mechanism. A charging pump is further connected to the charging line so as to independently charge the accumulators with water at a predetermined pressure.