ABSTRACT
Changes to safety regulations forms a major risk to large projects. The effects are systemic, so difficult to quantify and usually under-estimated. As well as general lessons about the risk, this paper describes two transport manufacturing projects that were evaluated post mortem as part of claims procedures, to demonstrate the type of effects caused, and the issues involved in quantification. Traditional tools were inadequate to quantify the effects. The use of System Dynamics is described to demonstrate the project dynamics, to model the inter-relationships between factors and to quantify their combined effect. This technique can be used for many areas of project modelling.
