Tsukasa Consulting Develops 3D GIS for Fukushima Daiichi Nuclear Accident Decontamination Project

Osaka, Japan
September 08, 2015

Tsukasa Consulting Co. in Japan uses the TatukGIS Developer Kernel (VCL edition) to develop its "M System" 3D GIS software application used to manage radioactive decontamination work being performed in regions near the Fukushima Daiichi nuclear power plant accident site. The major earth quake and tsunami on March 11, 2011 severely damaged the Fukushima Daiichi plant, resulting in widespread leakage of radioactive material that forced 300,000 residents in Fukishima Prefecture to flee their homes, becoming refuges. Today the Japanese government is engaged in a massive, multi-year, decontamination effort involving house-by-house and parcel-by-parcel decontamination of 105 cities, towns, and villages in the affected area, with the objective of allowing residents to return to their homes. The decontamination project employs 10,000 – 20,000 personnel and is costing $3 – 4 billion annually.

The work of Tsukasa Consulting involves mass production of detailed, structure-by-structure, 3D maps of contaminated areas using a hybrid 3D vector plotting process with stereographic viewing of aerial imagery. The result is highly accurate, +/- 10 cm, 2D and 3D vector objects representing each building structure within a mapped area. The process is cost effective relative to laser scanning methods, taking advantage of already existing data, technology, and knowledge, and resulting in smaller datasets requiring less processing and editing. Bentley Systems MicroStation software is used to generate the 2D and 3D vector models (as DGN files) which are used in the M System desktop application developed from the TatukGIS SDK. The M System solution enables decontamination teams to optimally plan their efforts before entering radioactive zones, know the number of houses in an area, identify structures with contamination, assign personnel to individual houses, and manage the progress using a 3D GIS enabled database system.

The M System 3D mapping application developed from the TatukGIS SDK.


The Tsukasa 3D plotting methodology, editing tools, and M System GIS enabled database management software were presented by Tsukasa Consulting Co. CEO, Hamamoto Takashi, at the recent SPAR Japan conference on June 3 and 4 in Kawasaki, Japan. This presentation can be viewed at the link: https://youtu.be/C91oSpFrq64

3D vector plotting a house.

M System printouts help with on sight collaboration.

M System automatic 3D area calculations.

Besides the Fukushima Daiichi decontamination project, Tsukasa tools and methodology are targeted to areas including environmental maintenance, architecture, energy (solar panels), prevention and recovery planning of natural disasters, management of building plans and records, and urban planning.

Visit the Tsukasa Consulting web site at:  http://www.tsukasa-consulting.net/jpn/

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