At nuclear power plants, most of the removal operations of large equipment and/or materials from radiation controlled areas take place on completion of a scheduled outage.

The equipment and/or materials are subjected to contamination surveys before they are removed.

But the survey generally requires the involvement of a large work force for a short duration of time.

To provide a solution to this problem, we have developed the “Large Equipment Removal Operations Monitor,” which is “a rugged and easy to operate monitoring device without the need for a large work force”.

This device is capable of surveying contamination on large equipment, such as a scaffolding plate as large as 1800mm x 900mm, in one single operation.

Furthermore, the plastic scintillation detector can be moved up and down to follow the contours of the object under inspection allowing a survey to be performed close to the object.

Because of this, low levels of contamination can also be detected, demonstrating high sensitivity for all levels of contamination.

In nuclear power plants, computerized control systems for work in the radiation environment are used for effective safety control.

For further efficient system management, we developed an intelligent electronic dosimeter under the concept of how we can support our customers.

In order for the system to be managed efficiently, the date to be entered into the system must be of real time and intelligent nature.

For example, for those who access the controlled area, we offer various electronic dosimeters which enable direct data output of the access authority, dose values, and so on.

Since small memory devices are mounted in these dosimeters, besides being capable of measuring the b-rays and neutrons, such intelligent data as the work titles and the trend data of dosage can be delivered to the system.

Conventionally, for article removed from the controlled areas within nuclear power plants, the manual inspections have been carried out by using survey meters.

Particularly in the case of handling the large-sized equipment, considerable labor and time were required, which resulted in increased indirect expenses.

We tackled these problems of our customers, and developed a monitoring system in which the measurement of large-sized equipment was fully automated.

Since such large equipment removal monitoring systems enable the automatization of measurements in terms of both high sensitivity and precision, the side benefits, including the improved productivity of persons who are involved in the examination work, are inestimable.

Furthermore, we offer tools which strongly support the management of the existing control system for work in the radiation environment in operation at our customers' facilities .