School of ECM University of Surrey Guildford, Surrey GU2 5XH, UK

Tel: +44 (0)1483 259823 Fax: +44 (0)1483 876051

1993-1996

"Safe Design of Urban drainage networks by the use of Information Systems" (SAFE-DIS)

• (a) to explore, explicate and archive the largely undocumented knowledge of how to use existing simulation software effectively;

• (b) to examine the efficacy of methods and tools currently available (or under development) for network analysis, and assess their applicability to the requirements;

• (c) to specify an integrated, safety-informed information system, possibly incorporating features of existing methods and tools, that could address the problem of safe and accurate modelling of networks;

• (d) to prototype relevant subsets of the specified information system and use the prototype in a pilot project to quantify, demonstrate and evaluate the costs and benefits; and

• (e) to produce a high-level specification for a safety-informed information system that could be used to comprehend safety-related problems.

Potential uses of the Safe-DIS system have played an active role in the project throughout in the guise of the Safe-DIS Safety Critical Round Table. This group of drainage engineers, representing national water companies and private consultancies, meets quarterly and spends day-long sessions discussing the development of the system and providing the knowledge and information sources that underpin it. Additionally, time has been spent with individual members of the Round Table on a variety of knowledge acquisition exercises.