Nuclear Industrial Directory of Japan

Nuclear Industrial Directory of Japan

1-3-1, Motoakasaka Minato-ku, Tokyo 107-8388, Japan

Contact Person
Mr. Tomohiro Kobayashi

Corporate Information

Established: 1840, Incorporated: 1930
Number of Employees*: 7,783(Consolidated: 18,297)
Revenue**:¥1,280 billion (Consolidated: ¥1,974 billion)
*As of March 31, 2019, **Fiscal year 2018
President Representative Director: Mr. Yoshikazu Oshimi

Main Activities

Kajima Corporation is one of the leading engineering and construction companies in Japan, providing a full range of services in Japan and countries around the globe. For any categories and types of buildings and civil structures, skilled professionals in the areas of architectural and civil engineering design, building and civil construction, and real estate development are ready to serve our clients. Engineers and specialists highly versed in mechanical, electrical, and information technologies as well as chemistry, agriculture, and oceanography are also on hand to provide comprehensive services and solutions when requested.

・Construction ・Architecture
・Real Estate Development ・Engineering
・Environmental Engineering ・Global Support
・Research and Development

Main Services in Nuclear Industry

Kajima’s engineering and construction technology of nuclear facilities are moving ahead in tandem with the development of nuclear power in Japan. For a safe and secure energy cycle, we integrate planning, design, engineering and construction of nuclear power plant structures. Our ongoing technological development will support life cycle management of nuclear power facilities.

Design and Analysis

The seismic design and analysis is one of the most priority technologies in a land of earthquakes, Japan. In order to evaluate seismic effects induced into structural elements and to assess structural integrity of the building accurately, Kajima applies a dynamic soil-structure interaction analysis using 3D finite element model.

Analytical Assessments of Airplane Crash

According to the new regulatory guides for nuclear facilities, assessment and countermeasures for malicious airplane crash impact should be conducted. Using our approach of analytical assessments, the event of the airplane crash to WTC Building in New York is simulated in good agreement with that of the actual.


Kajima has been constructing nuclear plants since the 1950s. Using those experiences and innovative ideas, Kajima has developed the technologies to build highquality structures safely in a very short term “Large – Scale Modular Construction Method”,“ All-Weather Construction Method”, and so on.

Decommissioning of Fukushima Daiichi

Kajima was involved in the building of all six reactors at Fukushima Daiichi. Immediately after the disaster we began devoting an all-out effort toward solving problems in the reactor decommissioning work through onsite work and from engineering supports.