Abstract
This report gives guidelines for risk based maintenance and reinvestment management of electricity distribution assets. The report is one of the deliverables from the RISK DSAM project, and presents a summary of important results from the project. The aim of the report is to provide insight in risk based maintenance and reinvestments management and decision support to distribution network companies, by suggesting answers to the following questions:− How to incorporate risk analysis in maintenance and reinvestment management?− How to develop risk based maintenance strategies?− When and how to perform reinvestment analysis? Maintenance and reinvestment management are two closely related processes, and should be governed by the same philosophies and overall objectives, preferably coordinated by one asset management group within the electricity distribution companies. Throughout this report we recommend two main principles for maintenance and reinvestment management:− Risk differentiation; permitting the distribution network companies to focus their efforts where they are needed the most. The differentiation should be based on risk analysis results for all relevant risk consequence categories, for example economy, safety, etc.− Continual improvement; both the maintenance and the reinvestment processes must be subject to continual improvement, using gathered experience and updated knowledge to learn and make the processes better.