In 1996, the International Association of Oil and Gas Producers (then the E&P Forum) completed and issued the Risk Assessment Data Directory (RADD). Its aim was to provide a catalogue of information that could be used to improve the quality and consistency of risk assessments with readily available benchmark data and references for common types of incident analysed in upstream production operations. The use of formal risk assessment has become widely accepted in the oil and gas industry since the RADD was originally published. It is now an essential framework in legislation. Experience shows that the application of risk assessment is important both to improved plant and system integrity and to cost effectiveness. It provides valuable information for risk-based decision-making. The objective of the Risk Assessment Data Directory is to provide data and information that can be used to improve the quality and consistency of risk assessments with readily available benchmark data. The directory includes references for common incidents analysed in upstream production operations.