Description
The Process Safety Events (PSE) data presented in the Report are based on the numbers of Tier 1 and Tier 2 PSE reported by participating IOGP Member
Companies, broken down for:
• onshore and offshore
• drilling and production
• activities
• consequences
• material released
The Tier 1 and Tier 2 data presented have been normalized against reported work hours associated with drilling and production activities to provide PSE rates.