CHAPTER 18: NATURAL AND TECHNOLOGICAL HAZARDS - INTRODUCTION

Naturally occurring hazardous events and technological accidents are separate causes of environmental impacts. The information available on their occurrence and consequences is far from comprehensive (Box 18A) and, in particular, there are significant gaps in our understanding of the long-term environmental impacts of accidents. However, on the basis of data which are available from a range of sources, it is possible to indicate how these two kinds of events are different and why they need to be treated separately from other pressures. This chapter examines the characteristics and importance of accidents and natural hazards as causes of environmental impacts. It summarises their causes and consequences in Europe, identifying different types of damage which can result from different sources.

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Contents:

18.1 - Introduction

18.2 - Hazardous Events: A Separate Cause of Impacts

18.2.1 - Uncertainity and duration

18.2.2 - Impact mechanisms and types of damage

18.2.2.1 - Accidents

18.2.2.2 - Natural hazards

18.3 - Sources and Consequences

18.3.1 - Industrial installations

18.3.2 - Inland transport and distribution

18.3.3 - Marine transport and offshore installations

18.3.4 - Nuclear installations and transport of radioactive material

18.3.4.1 - Transportation

18.3.4.2 - Operation of nuclear installations

18.3.4.3 - Abnormal events

18.3.4.4 - Environmental effects

18.3.4.4.1 - Important radionuclides

18.3.4.4.2 - Radionuclide distribution

18.3.4.4.3 - Radiation damage to vegetation

18.3.4.4.4 - Radiation damage to fauna

18.3.4.4.5 - Lessons learned and needs

18.3.5 - Natural hazards

18.3.5.1 - Storms and floods

18.3.5.2 - Heatwaves, fires and draughts

18.3.5.3 - Earthquakes and volcanoes

18.4 - Hazardous Events as a Cause of Damage

18.4.1 - Short- and long-term impacts

18.4.2 - Relationship with other causes of impacts