The presentation shows how new technology and new work processes in the offshore oil and gas industry can improve proactive management of process safety. A generic model for proactive major accident prevention is presented, which is combined with an IPO stack model. Four main improvements on risk assessment and management by new technology and new work processes in the offshore oil and gas industry is identified: 1) better risk models and risk pictures by data capture, communication infrastructure and information access; 2) better communication of risk models by communication infrastructure, information access, information visualization; 3) better interpretations and decision-making by collaboration work arena, operational capability and IO mindset; and 4)better sensitization related to the unknowns.