1.

Record Nr.

UNINA9910299291903321

Autore

Myklebust Thor

Titolo

The Agile Safety Case / / by Thor Myklebust, Tor Stålhane

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Springer, , 2018

ISBN

3-319-70265-3

Edizione

[1st ed. 2018.]

Descrizione fisica

1 online resource (XII, 235 p. 34 illus., 29 illus. in color.)

Disciplina

005.1

Soggetti

Software engineering

Software engineering - Management

Transportation engineering

Traffic engineering

Electronic data processing - Management

Software Engineering

Software Management

Transportation Technology and Traffic Engineering

IT Operations

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di bibliografia

Includes bibliographical references at the end of each chapters and index.

Nota di contenuto

1 Introduction -- 2 Agile development.- Railway roles, assessment and authorisation -- 4 The Agile Safety Plan for signalling systems -- 5 Safety case patterns, notations and GSN -- 6 The Safety Case - Introduction and Definition of system -- 7 Safety case, Quality Management Report -- 8 Safety Management Report -- 9 Technical Safety Report -- 10 Related safety cases, Conclusion and Safety case references.

Sommario/riassunto

The safety case (SC) is one of the railway industry’s most important deliverables for creating confidence in their systems. This is the first book on how to write an SC, based on the standard EN 50129:2003. Experience has shown that preparing and understanding an SC is difficult and time consuming, and as such the book provides insights that enhance the training for writing an SC. The book discusses both "regular" safety cases and agile safety cases, which avoid too much



documentation, improve communication between the stakeholders, allow quicker approval of the system, and  which are important in the light of rapidly changing technology. In addition, it discusses the necessity of frequently updating software due to market requirements, changes in requirements and increased cyber-security threats. After a general introduction to SCs and agile thinking in chapter 1, chapter 2 describes the majority of the roles that are relevant when developing railway-signaling systems. Next, chapter 3 provides information related to the assessment of signaling systems, to certifications based on IEC 61508 and to the authorization of signaling systems. Chapter 4 then explains how an agile safety plan satisfying the requirements given in EN 50126-1:1999 can be developed, while chapter 5 provides a brief introduction to safety case patterns and notations. Lastly, chapter 6 combines all this and describes how an (agile) SC can be developed and what it should include. To ensure that infrastructure managers, suppliers, consultants and others can take full advantage of the agile mind-set, the book includes concrete examples and presents relevant agile practices. Although the scope of the book is limited to signaling systems, the basic foundations for (agile) SCs are clearly described so that they can also be applied in other cases.