Process safety and asset integrity Our HSES Management System defi nes Premier’s objectives and minimum requirements for process safety and asset integrity in all operations, as well as the responsibilities, verifi cation and validation required to provide assurance that they have been met. Safety and Asset Integrity Performance Reporting Scorecards We apply Safety and Asset Integrity Performance Reporting Scorecards (STAIRS) across all of our operated assets, covering integrity, maintenance, plant control, people, procedures and recovery (i.e. emergency response) barriers.