This document outlines a barrier model for safeguarding high-risk activities and preventing high-consequence process safety events. The model includes organizational barriers like company values, policies, leadership, and staffing. It also includes individual barriers like competent personnel, fitness for duty assessments, hazard assessments, and training. Work groups are safeguarded by procedures, meetings, reporting, and audits. The goal of the integrated model is to establish a credible, reliable, and safe business through preventative and mitigation barriers at the organizational, work group, and individual levels.