This new book gives comprehensive guidance on writing a safety report for sites containing certain quantities of dangerous substances, as required by the Control of Major Accident Hazards Regulations 1999 (COMAH). It explains to operators of top-tiers (as defined under COMAH) what information needs to be provided in the safety report and how it should be presented. Contents: Safety reports - purpose and background information; Structuring and presenting the information in a safety report; Descriptive information; Information about the management measures to prevent major accidents; Information about possible major accidents; Information about the measures to prevent or limit the consequences of a major accident at each installation; Information about the emergency response measures to limit the consequences of major accidents.