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ICRP International

Conference on Recovery After Nuclear Accidents

Radiological Protection Lessons
from Fukushima and Beyond

December 1 - 18, 2020

A. Stolar

Updated: Dec 10, 2020

Visual Safety Analysis Techniques for Responders

A. Stolar (Störfallmanagement Stolar, Vienna University of Technology, Austria)


Emergency response teams have to carry out difficult tasks not only in case of radiological incidents or radiation protection. They also have to make decisions with serious consequences. Visual, graphical process safety techniques such as Bow-Tie Analysis or Cause-Consequence-Analysis can be helpful in training as well as in resource planning. Barriers or safety precautions can be clearly displayed according to the Swiss-Cheese Model, or deficiencies can be identified. Graphical methods are easy to creat