IOGP Report 456 – Process Safety – Recommended Practice on Key Performance Indicators, published in November 2011 and revised in November 2018, provide guidance on Key Performance Indicators (KPI) to upstream companies for managing process safety hazards and risks and to prevent unplanned and uncontrolled loss of containment of materials. IOGP Report 2019p – Safety performance indicators – Process safety events – 2019 data, is a further step towards making Process Safety Event (PSE) data and associated KPIs available to stakeholders. PSE data presented in this report are based on voluntary submissions from participating IOGP member companies and are not necessarily representative of the entire upstream oil and gas industry. IOGP started a pilot process of data collection in 2010. Data for the years 2011–2018 have been previously published in report 2018p. The collection of PSE data has progressed, with the number of companies reporting increasing from 26 in 2011 to 47 in 2019.