contains the invited papers presented at the Twelfth annual Safety-critical Systems Symposium, held at Birmingham, UK in February 2004. The papers included in this volume focus on the themes of the identification and analysis of risk - using the UK railway as an industry example; safety-integrity levels; industrial use of formal methods; as well as expanding on the development, assessment and changing face of current safety issues. All the papers are linked within the broad context of safety-critical systems actvities and offer a practical perspective. Papers contain industrial experience, as well as academic research, and are presented under the headings of: Mature and Practical Formality, Managing Risk in the Railway Industry, Safety Integrity Levels, the Human Side of Risk, Assessment and the Derivation of Evidence, and Safety Argument and the Law. weiterlesen